[TK635xxAB6]
AP-MS0035-E-00 - 1 - 2011/02
TK635xxAB6
1-
. DESCRIPTION
The TK635xxAB6 is a CMOS LDO regulator. The
package is the very small 4-bump flip chip.
The IC is designed for portable applications with space
requirements.
The IC can supply 200mA output current.
The IC does not require a noise-bypass capacitor.
The IC offer ultra fast transient response.
The IC includes an auto-discharge function.
The output voltage is internally fixed from 1.5V to 4.2V.
2-
. FEATURES
Auto discharge function
Ultra small package: FC-4
No noise bypass capacitor required
Ultrafast transient response
High ripple rejection
Low noise
Thermal and over current protection
High maximum load current
On/Off control
High accuracy
3-
. APPLICATIONS
Mobile communication
4-
. PIN CONFIGURATION
FC-4
(Top View)
A1A2
B1B2
GND
VCont
VIn VOut
A1 mark
5-
. BLOCK DIAGRAM
VIn
GND
VCont
VOut
CIn COut
A1
On/Off
Control
B2
A2
VRef
B1
Thermal &
Over Current
Protection
Auto Discharge, Ultrafast Response, High RR, Low Noise
200mA CMOS LDO Regulator IC
[TK635xxAB6]
AP-MS0035-E-00 - 2 - 2011/02
6-
. ORDERING INFORMATION
Voltage Code
(Refer to the following table)
Package Code
B6 : FC-4
Tape/Reel Code
B : Normal type for FC
Environment Code
GH : Lead Free +
Halogen Free
T K 6 3 5 GA
Operating Temp. Range Code
C : C Rank(standard)
H B - CB 6
Output Voltage
Voltage Code
Voltage Code
Output Voltage
Voltage Code
1.5V
15
29
4.0V
40
1.8V
18
30
2.5V
25
31
2.6V
26
32
2.7V
27
33
2.8V
28
35
*If you need a voltage other than the value listed in the above table, please contact Asahi Kasei Microdevices.
7-
. ABSOLUTE MAXIMUM RATINGS
Ta=25C
Parameter
Symbol
Rating
Units
Conditions
Absolute Maximum Ratings
Input Voltage
VIn,MAX
-0.3 ~ 6.0
V
Output pin Voltage
VOut,MAX
-0.3 ~ VIn+0.3
V
Control pin Voltage
VCont,MAX
-0.3 ~ 6.0
V
Storage Temperature Range
Tstg
-55 ~ 150
C
Power Dissipation
PD
360
mW
Internal Limited Tj=150°C *,
When mounted on a PCB
Operating Condition
Operational Temperature Range
TOP
-40 ~ 85
C
Operational Voltage Range
VOP
2.0 ~ 6.0
V
* PD must be decreased at the rate of 2.9mW for operation above 25C.
The maximum ratings are the absolute limitation values with the possibility of the IC being damaged.
If the operation exceeds any of these standards, quality cannot be guaranteed.
[TK635xxAB6]
AP-MS0035-E-00 - 3 - 2011/02
8-
. ELECTRICAL CHARACTERISTICS
The parameters with min. or max. values will be guaranteed at Ta=Tj=25C with test when manufacturing or SQC
(Statistical Quality Control) methods. The operation between -40 ~ 85C is guaranteed by design.
VIn=VOut,TYP+1V, VCont=1.2V, Ta=Tj=25°C
Parameter
Symbol
Value
Units
Conditions
MIN
TYP
MAX
Output Voltage
VOut
Refer to TABLE 1
V
IOut=5mA
Line Regulation
LinReg
-
0.0
4.0
mV
VIn=1V
Load Regulation
LoaReg
Refer to TABLE 1
mV
Refer to TABLE 1
Dropout Voltage *1
VDrop
Refer to TABLE 1
mV
Refer to TABLE 1
Maximum Load Current *2
IOut,MAX
210
350
-
mA
VOut=VOut,TYP0.9
Quiescent Current
IQ
-
40
80
µA
IOut=0mA, VCont=VIn
Standby Current
IStandby
-
0.01
0.1
µA
VCont=0V
GND Pin Current
IGND
-
50
100
µA
IOut=50mA, VCont=VIn
Discharge Resistance
RDis
-
20
-

VIn=5V, VOut=0.1V, VCont=0V
Control Terminal
Control Current
ICont
-
0.2
0.4
µA
VCont=1.2V
Control Voltage
VCont
1.2
-
-
V
VOut On state
-
-
0.2
V
VOut Off state
Reference Value
Output Voltage / Temp.
VOut/Ta
-
100
-
ppm/°C
IOut=5mA
Output Noise Voltage
(TK63528AB6)
VNoise
-
45
-
µVrms
COut=1.0µF, IOut=30mA,
BPF=400Hz~80kHz
Ripple Rejection
(TK63528AB6)
RR
-
75
-
dB
COut=1.0µF,
IOut=10mA, f=1kHz
Rise Time
(TK63528AB6)
tr
-
65
-
µs
COut=1.0µF, IOut=30mA
VCont: Pulse Wave (100Hz),
VCont On VOut95% point
*1: For VOut 2.0V, no regulations.
*2: The maximum output current is limited by power dissipation.
The maximum load current is the current where the output voltage decreases to 90% by increasing the output current at
Tj=25°C, compared to the output voltage specified at VIn=VOut,TYP+1V. The maximum load current indicates the current
at which over current protection turn on.
For all output voltage products, the maximum output current for normal operation without operating any protection is
200mA. Accordingly, LoaReg and VDrop are specified on the condition that IOut is less than 200mA.
General Note
Parameters with only typical values are just reference. (Not guaranteed)
The noise level is dependent on the output voltage, the capacitance and capacitor characteristics.
[TK635xxAB6]
AP-MS0035-E-00 - 4 - 2011/02
TABLE 1.
Part Number
Output Voltage
Load Regulation
Dropout Voltage
IOut=5 ~ 100mA
IOut=5 ~ 200mA
IOut=100mA
IOut=200mA
MIN
TYP
MAX
TYP
MAX
TYP
MAX
TYP
MAX
TYP
MAX
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
TK63515AB6
1.475
1.500
1.525
3
12
6
24
-
-
-
-
TK63518AB6
1.775
1.800
1.825
3
12
7
28
-
-
-
-
TK63525AB6
2.475
2.500
2.525
5
20
9
36
95
145
185
310
TK63526AB6
2.574
2.600
2.626
5
20
10
40
90
140
180
305
TK63527AB6
2.673
2.700
2.727
5
20
10
40
90
140
175
295
TK63528AB6
2.772
2.800
2.828
5
20
10
40
90
140
175
295
TK63529AB6
2.871
2.900
2.929
5
20
11
44
85
135
170
285
TK63530AB6
2.970
3.000
3.030
5
20
11
44
85
135
165
280
TK63531AB6
3.069
3.100
3.131
6
24
11
44
85
135
165
280
TK63532AB6
3.168
3.200
3.232
6
24
12
48
80
130
160
275
TK63533AB6
3.267
3.300
3.333
6
24
12
48
80
130
160
275
TK63535AB6
3.465
3.500
3.535
6
24
13
52
80
130
155
265
TK63540AB6
3.960
4.000
4.040
7
28
15
60
75
120
150
255
Notice.
Please contact your authorized Asahi Kasei Microdevices representative for voltage availability.
[TK635xxAB6]
AP-MS0035-E-00 - 5 - 2011/02
9-
. TEST CIRCUIT
IOut
=5mA
COut
=1.0F
CIn
=1.0F
VCont
V
_
A
_ICont VOut
VIn=
VOut,TYP+1.0V
A
_VIn VOut
VCont GND
IIn
Test circuit for electrical characteristic
Notice.
The limit value of electrical characteristics is applied when
CIn=1.0F(Ceramic), COut=1.0F(Ceramic).
IOut
COut
=1.0F
CIn
=1.0F
VCont
V
_
A
_ICont VOut
VIn
VIn VOut
VCont GND
VOut vs VIn
VDrop vs IOut
VOut vs IOut
VOut vs IOut
VOut vs Ta
VDrop vs Ta
IOut,MAX vs Ta
ICont vs VCont , VOut vs VCont
ICont vs Ta
VCont vs Ta
VNoise vs VIn
VNoise vs IOut
VNoise vs VOut
VNoise vs Frequency
COut
=1.0F
CIn
=1.0F
VCont
A
_ICont
VIn=
VOut,TYP+1.0V
A
_VIn VOut
VCont GND
IIn
Open
IQ vs VIn
IStandby vs VIn
IQ vs Ta
IOut
COut
=1.0F
CIn
=1.0F
VCont
VIn=
VOut,TYP+1.0V
VIn VOut
VCont GND
A
_
IGND
A
_ICont
IGND vs IOut
IGND vs Ta
[TK635xxAB6]
AP-MS0035-E-00 - 6 - 2011/02
IOut
=10mA
COut
=1.0F
VIn VOut
VCont GND
VIn=
VOut,TYP+1.5V
Vripple=
500mVP-P
VCont
=1.2V
RR vs VIn
RR vs Frequency
RR vs Frequency
COut
=1.0F
V
_VOut
VIn VOut
VCont GND
VOut,TYP+1V
VOut,TYP+2V
VCont
=1.2V
IOut
=5mA
Line Transient
COut
=1.0F
CIn
=1.0F
V
_VOut
VIn=
VOut,TYP+1.0V
VIn VOut
VCont GND
IOut
VCont
=1.2V
Load Transient
IOut=
0mA or
30mA
COut
=1.0F
CIn
=1.0F
V
_VOut
VIn=
VOut,TYP+1.0V
VIn VOut
VCont GND
VCont
=0V 1.2V
On/Off Transient
[TK635xxAB6]
AP-MS0035-E-00 - 7 - 2011/02
10-
. TYPICAL CHARACTERISTICS
10-1-
. DC CHARACTERISTICS
VOut vs VIn (TK63515AB6)
VIn [V]
0 1 2 3 4 5 6
VOut [mV]
-30
-25
-20
-15
-10
-5
0
5
10 IOut=5mA
VOut vs VIn (TK63528AB6)
VIn [V]
0 1 2 3 4 5 6
VOut [mV]
-30
-25
-20
-15
-10
-5
0
5
10 IOut=5mA
VOut vs VIn (TK63542AB6)
VIn [V]
0 1 2 3 4 5 6
VOut [mV]
-30
-25
-20
-15
-10
-5
0
5
10 IOut=5mA
VOut vs VIn (TK63515AB6)
VIn-VOut [mV]
-100 -50 0 50 100 150 200 250 300
VOut [mV]
-100
-80
-60
-40
-20
0
20
40
IOut=0, 5, 50, 100, 150, 200mA
VOut vs VIn (TK63528AB6)
VIn-VOut [mV]
-100 -50 0 50 100 150 200 250 300
VOut [mV]
-100
-80
-60
-40
-20
0
20
40
IOut=0, 5, 50, 100, 150, 200mA
VOut vs VIn (TK63542AB6)
VIn-VOut [mV]
-100 -50 0 50 100 150 200 250 300
VOut [mV]
-100
-80
-60
-40
-20
0
20
40
IOut=0, 5, 50, 100, 150, 200mA
[TK635xxAB6]
AP-MS0035-E-00 - 8 - 2011/02
VDrop vs IOut (TK63528AB6)
IOut [mA]
050 100 150 200
VDrop [mV]
-400
-300
-200
-100
0
VDrop vs IOut (TK63542AB6)
IOut [mA]
050 100 150 200
VDrop [mV]
-400
-300
-200
-100
0
VOut vs IOut (TK63515AB6)
IOut [mA]
0 100 200 300 400 500
VOut [V]
0
0.5
1
1.5
2
VOut vs IOut (TK63528AB6)
IOut [mA]
0 100 200 300 400 500
VOut [V]
0
1
2
3
4
VOut vs IOut (TK63542AB6)
IOut [mA]
0 100 200 300 400 500
VOut [V]
0
1
2
3
4
5
6
[TK635xxAB6]
AP-MS0035-E-00 - 9 - 2011/02
VOut vs IOut (TK63515AB6)
IOut [mA]
050 100 150 200
VOut [mV]
-40
-30
-20
-10
0
10
VOut vs IOut (TK63528AB6)
IOut [mA]
050 100 150 200
VOut [mV]
-40
-30
-20
-10
0
10
VOut vs IOut (TK63542AB6)
IOut [mA]
050 100 150 200
VOut [mV]
-40
-30
-20
-10
0
10
VOut vs Ta (TK63515AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VOut [mV]
-100
-80
-60
-40
-20
0
20
40
60
80
100
VOut vs Ta (TK63528AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VOut [mV]
-100
-80
-60
-40
-20
0
20
40
60
80
100
VOut vs Ta (TK63542AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VOut [mV]
-100
-80
-60
-40
-20
0
20
40
60
80
100
[TK635xxAB6]
AP-MS0035-E-00 - 10 - 2011/02
VDrop vs Ta (TK63528AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VDrop [mV]
-400
-350
-300
-250
-200
-150
-100
-50
0
100mA
200mA
VDrop vs Ta (TK63542AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VDrop [mV]
-400
-350
-300
-250
-200
-150
-100
-50
0
100mA
200mA
IOut,MAX vs Ta (TK63515AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IOut.MAX [mA]
200
300
400
IOut,MAX vs Ta (TK63528AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IOut.MAX [mA]
200
300
400
IOut,MAX vs Ta (TK63542AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IOut.MAX [mA]
200
300
400
[TK635xxAB6]
AP-MS0035-E-00 - 11 - 2011/02
IQ vs VIn (TK63515AB6)
VIn [V]
0 1 2 3 4 5 6
IQ [A]
0
20
40
60
80
100 VCont=VIn
IQ vs VIn (TK63528AB6)
VIn [V]
0 1 2 3 4 5 6
IQ [A]
0
20
40
60
80
100 VCont=VIn
IQ vs VIn (TK63542AB6)
VIn [V]
0 1 2 3 4 5 6
IQ [A]
0
20
40
60
80
100 VCont=VIn
IStandby vs VIn (TK63515AB6)
VIn [V]
IStandby [nA]
0
1
2
3
4
5
6
7
8
9
10
0 1 2 3 4 5 6
VCont=0V
IStandby vs VIn (TK63528AB6)
VIn [V]
IStandby [nA]
0
1
2
3
4
5
6
7
8
9
10
0 1 2 3 4 5 6
VCont=0V
IStandby vs VIn (TK63542AB6)
VIn [V]
IStandby [nA]
0
1
2
3
4
5
6
7
8
9
10
0 1 2 3 4 5 6
VCont=0V
[TK635xxAB6]
AP-MS0035-E-00 - 12 - 2011/02
IGND vs IOut (TK63515AB6)
IOut [mA]
050 100 150 200
IGND [A]
0
20
40
60
80
100
120
140
160
180
200 VCont=VIn
IGND vs IOut (TK63528AB6)
IOut [mA]
050 100 150 200
IGND [A]
0
20
40
60
80
100
120
140
160
180
200 VCont=VIn
IGND vs IOut (TK63542AB6)
IOut [mA]
050 100 150 200
IGND [A]
0
20
40
60
80
100
120
140
160
180
200 VCont=VIn
IQ vs Ta (TK63515AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IQ [A]
0
10
20
30
40
50
60
70
80
90
100 VCont=VIn
IQ vs Ta (TK63528AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IQ [A]
0
10
20
30
40
50
60
70
80
90
100 VCont=VIn
IQ vs Ta (TK63542AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IQ [A]
0
10
20
30
40
50
60
70
80
90
100 VCont=VIn
[TK635xxAB6]
AP-MS0035-E-00 - 13 - 2011/02
IGND vs Ta (TK63515AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IGND [A]
0
10
20
30
40
50
60
70
80
90
100 IOut=50mA
IGND vs Ta (TK63528AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IGND [A]
0
10
20
30
40
50
60
70
80
90
100 IOut=50mA
IGND vs Ta (TK63542AB6)
Ta [°C]
-50 -25 0 25 50 75 100
IGND [A]
0
10
20
30
40
50
60
70
80
90
100 IOut=50mA
ICont vs VCont, VOut vs VCont (TK63515AB6)
VCont [V]
0 0.5 1 1.5 2
ICont [A]
0
0.25
0.5
0.75
1
0
0.5
1
1.5
2
VOut [V]
VOut
ICont
ICont vs VCont, VOut vs VCont (TK63528AB6)
VCont [V]
0 0.5 1 1.5 2
ICont [A]
0
0.25
0.5
0.75
1
0
1
2
3
4
VOut [V]
VOut
ICont
ICont vs VCont, VOut vs VCont (TK63542AB6)
VCont [V]
0 0.5 1 1.5 2
ICont [A]
0
0.25
0.5
0.75
1
0
2
4
6
8
VOut [V]
VOut
ICont
[TK635xxAB6]
AP-MS0035-E-00 - 14 - 2011/02
VCont vs Ta (TK63515AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VCont [V]
0
0.2
0.4
0.6
0.8
1
1.2
1.4
VCont vs Ta (TK63528AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VCont [V]
0
0.2
0.4
0.6
0.8
1
1.2
1.4
VCont vs Ta (TK63542AB6)
Ta [°C]
-50 -25 0 25 50 75 100
VCont [V]
0
0.2
0.4
0.6
0.8
1
1.2
1.4
ICont vs Ta (TK635xxAB6)
Ta [°C]
-50 -25 0 25 50 75 100
ICont [A]
0
0.25
0.5
0.75
1VCont=1.2V
[TK635xxAB6]
AP-MS0035-E-00 - 15 - 2011/02
10-2-
. AC CHARACTERISTICS
RR vs VIn (TK63515AB6)
VIn-VOut [V]
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
RR [dB]
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
IOut=10mA
50mA
100mA
150mA
200mA
Vp-p=0.1V, Frequency=1kHz
RR vs VIn (TK63528AB6)
VIn-VOut [V]
0 0.5 1 1.5 2 2.5 3 3.5
RR [dB]
-100
-80
-60
-40
-20
0
IOut=10mA
50mA
100mA
150mA
200mA
RR [dB]
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0Vp-p=0.1V, Frequency=1kHz
RR vs VIn (TK63542AB6)
VIn-VOut [V]
0 0.5 1 1.5 2 2.5
RR [dB]
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
IOut=10mA
50mA
100mA
150mA
200mA
Vp-p=0.1V, Frequency=1kHz
RR vs Frequency (TK63515AB6)
Frequency [Hz]
100 1k 10k 100k 1M
RR [dB]
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0IOut=10mA
COut=0.68, 1.0, 2.2F(cer.)
RR vs Frequency (TK63528AB6)
Frequency [Hz]
100 1k 10k 100k 1M
RR [dB]
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0IOut=10mA
COut=0.68, 1.0, 2.2F(cer.)
RR vs Frequency (TK63542AB6)
Frequency [Hz]
100 1k 10k 100k 1M
RR [dB]
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0IOut=10mA
COut=0.68, 1.0, 2.2F(cer.)
[TK635xxAB6]
AP-MS0035-E-00 - 16 - 2011/02
The ripple rejection (RR) characteristic depends on the
characteristic and the capacitance value of the capacitor
connected to the output side. The RR characteristic of
50kHz or more varies greatly with the capacitor on the
output side and PCB pattern. If necessary, please confirm
stability of your design.
VNoise vs VIn (TK63515AB6)
VIn [V]
1 2 3 4 5 6
VNoise [Vrms]
0
10
20
30
40
50
60
70
80
90
100 IOut=30mA
VNoise vs VIn (TK63528AB6)
VIn [V]
2.5 3 3.5 4 4.5 5 5.5 6
VNoise [Vrms]
0
10
20
30
40
50
60
70
80
90
100 IOut=30mA
VNoise vs VIn (TK63542AB6)
VIn [V]
4 4.5 5 5.5 6
VNoise [Vrms]
0
10
20
30
40
50
60
70
80
90
100 IOut=30mA
[TK635xxAB6]
AP-MS0035-E-00 - 17 - 2011/02
VNoise vs IOut (TK63515AB6)
IOut [mA]
050 100 150 200
VNoise [Vrms]
0
10
20
30
40
50
60
70
80
90
100
VNoise vs IOut (TK63528AB6)
IOut [mA]
050 100 150 200
VNoise [Vrms]
0
10
20
30
40
50
60
70
80
90
100
VNoise vs IOut (TK63542AB6)
IOut [mA]
050 100 150 200
VNoise [Vrms]
0
10
20
30
40
50
60
70
80
90
100
VNoise vs VOut (TK635xxAB6)
VOut [V]
1 1.5 2 2.5 3 3.5 4 4.5
VNoise [Vrms]
0
10
20
30
40
50
60
70
80
90
100
[TK635xxAB6]
AP-MS0035-E-00 - 18 - 2011/02
VNoise vs Frequency (TK63515AB6)
Frequency [Hz]
10 100 1k 10k 100k
0.01
0.1
1
10
VNoise [µV/√Hz]
IOut=10mA
VNoise vs Frequency (TK63528AB6)
Frequency [Hz]
10 100 1k 10k 100k
0.01
0.1
1
10
VNoise [µV/√Hz]
IOut=10mA
VNoise vs Frequency (TK63542AB6)
Frequency [Hz]
10 100 1k 10k 100k
0.01
0.1
1
10
VNoise [µV/√Hz]
IOut=10mA
[TK635xxAB6]
AP-MS0035-E-00 - 19 - 2011/02
10-3-
. TRANSIENT CHARACTERISTICS
Line Transient (TK63515AB6)
Time
20sec/div
VOut
VIn
10mV/div
2.5V
3.5V
IOut=30, 100, 200mA
0
0
0
Line Transient (TK63528AB6)
Time
20sec/div
VIn
10mV/div
3.8V
4.8V
IOut=30, 100, 200mA
VOut
0
0
0
Line Transient (TK63542AB6)
Time
20sec/div
VIn
10mV/div
5.2V
6.2V
IOut=30, 100, 200mA
VOut
0
0
0
Load Transient (IOut=5100 or 200mA) (TK63515AB6)
Time
40sec/div
IOut
50mV/div
5mA
100 or 200mA
100mA
200mA
VOut
0
0
Load Transient (IOut=5100 or 200mA) (TK63528AB6)
Time
40sec/div
IOut
50mV/div
5mA
100 or 200mA
100mA
200mA
VOut
0
0
Load Transient (IOut=5100 or 200mA) (TK63542AB6)
Time
40sec/div
IOut
50mV/div
5mA
100 or 200mA
100mA
200mA
VOut
0
0
[TK635xxAB6]
AP-MS0035-E-00 - 20 - 2011/02
Load Transient (IOut=1150mA) (TK63515AB6)
Time
20sec/div
IOut
50mV/div
1mA
150mA
IOut : tR=1sec
VOut
0
Load Transient (IOut=1150mA) (TK63528AB6)
Time
20sec/div
IOut
50mV/div
1mA
150mA
IOut : tR=1sec
VOut
0
Load Transient (IOut=1150mA) (TK63542AB6)
Time
20sec/div
IOut
50mV/div
1mA
150mA
IOut : tR=1sec
VOut
0
Load Transient (IOut=1501mA) (TK63515AB6)
Time
20sec/div
IOut
50mV/div
1mA
150mA
IOut : tF=1sec
VOut
0
Load Transient (IOut=1501mA) (TK63528AB6)
Time
20sec/div
IOut
50mV/div
1mA
150mA
IOut : tF=1sec
VOut
0
Load Transient (IOut=1501mA) (TK63542AB6)
Time
20sec/div
IOut
50mV/div
1mA
150mA
IOut : tF=1sec
VOut
0
[TK635xxAB6]
AP-MS0035-E-00 - 21 - 2011/02
On/Off Transient (VCont=01.2V) (TK63515AB6)
Time
10sec/div
VCont
200mA/div
COut=1.0, 2.2F
IIn IOut=30mA
VOut 0.5V/div
1V/div
0
0
0
On/Off Transient (VCont=01.2V) (TK63528AB6)
Time
20sec/div
200mA/div
COut=1.0, 2.2F
IOut=30mA
1V/div
1V/div
VCont
IIn
VOut
0
0
0
On/Off Transient (VCont=01.2V) (TK63542AB6)
Time
20sec/div
200mA/div
COut=1.0, 2.2F
IOut=30mA
2V/div
1V/div
VCont
IIn
VOut
0
0
0
On/Off Transient (VCont=1.20V) (TK63515AB6)
40µsec/div
0.5V/div
1V/div
COut=1.0, 2.2F
100mA/div
Time
IOut=0mA
VCont
IIn
VOut
0
0
0
On/Off Transient (VCont=1.20V) (TK63528AB6)
1V/div
1V/div
100mA/div
Time
COut=1.0, 2.2F
IOut=0mA
40µsec/div
VCont
IIn
VOut
0
0
0
On/Off Transient (VCont=1.20V) (TK63542AB6)
40µsec/div
2V/div
1V/div
100mA/div
Time
COut=1.0, 2.2F
IOut=0mA
VCont
IIn
VOut
0
0
0
[TK635xxAB6]
AP-MS0035-E-00 - 22 - 2011/02
11-
. PIN DESCRIPTION
Pin No.
Pin Description
Internal Equivalent Circuit
Description
A1
GND
GND Terminal
A2
VCont
VCont
6.5M
ESD
protection
Control Terminal
VCont > 1.2V : On
VCont < 0.2V : Off
The pull-down resistor (about 6.5M) is built-in.
B1
VOut
VOut
VIn
ESD
protection
On/Off
Control
Output Terminal
B2
VIn
Input Terminal
[TK635xxAB6]
AP-MS0035-E-00 - 23 - 2011/02
12-
. APPLICATIONS INFORMATION
12-1-
. Stability
Linear regulators require input and output capacitors in
order to maintain the regulator's loop stability. If 0.68µF
capacitors are connected to the input side and the output
side, the IC provides stable operation. However, it is
recommended to use as large a value capacitor as is
practical. The output noise and the ripple noise decrease
as the value of the capacitor increases.
A recommended value of the application is as follows.
CIn0.68µF, COut0.68µF
It is not possible to determine this indiscriminately.
Please confirm the stability in your design.
Fig12-1: Capacitor in the application
TK635xx VOut
VCont
VIn
COut0.68µFCIn0.68µF
Fig12-2: Output Current vs Stable Operation Area
-40~+85ºC
050 100 150 200
IOut [mA]
ESR [Ω]
Stable Area
COut=0.68µF
TK63515AB6
Unstable Area
0.01
0.1
1
10
100
-40~+85ºC
0.01
0.1
1
10
100
050 100 150 200
IOut [mA]
ESR [Ω]
Stable Area
COut=0.68µF
TK63528AB6
Unstable Area
-40~+85ºC
0.01
0.1
1
10
100
050 100 150 200
IOut [mA]
ESR [Ω]
Stable Area
COut=0.68µF
TK63542AB6
Unstable Area
[TK635xxAB6]
AP-MS0035-E-00 - 24 - 2011/02
Fig.12-2 shows the stable operation area of output
current and the equivalent series resistance (ESR) with a
ceramic capacitor of 0.68µF. ESR of the output capacitor
must be in the stable operation area. Please select the best
output capacitor according to the voltage and current
used. The stability of the regulator improves as the value
of the output side capacitor increases (the stable
operation area extends.) Please use as large a value
capacitor as is practical.
For evaluation
Kyocera : CM105B684K10A , CM105B105K06A ,
CM21B225K10A
Fig12-3: ex. Ceramic Capacitance vs Voltage,
Temperature
CAP(%)
12
50
Bias Voltage(V)
CAP(%)
100
Ta(°C)
Capacitance vs Voltage
Capacitance vs Temperature
B Curve
F Curve
1086420
60
70
80
90
100
B Curve
F Curve
7550250-25-50
50
60
70
80
90
100
Generally, a ceramic capacitor has both a temperature
characteristic and a voltage characteristic. Please consider
both characteristics when selecting the part. The B curves
are the recommended characteristics.
[TK635xxAB6]
AP-MS0035-E-00 - 25 - 2011/02
12-2-
. Layout
図12-4: Layout example
GND
VCont VIn
VOut
GND
GND
(Top View)
1
PCB Material: Glass epoxy
Size: 7mm×8mm×0.8mm
Please do derating with 2.9mW/C at PD=360mW, and
25C or more. Thermal resistance (ja) is=250C/W.
Fig12-5: Derating Curve
25 50 100 150°C
Pd(mW)
360
(85°C)
-2.9mW/°C
The package loss is limited at the temperature that the
internal temperature sensor works (about 150C).
Therefore, the package loss is assumed to be an internal
limitation. There is no heat radiation characteristic of the
package unit assumed because of its small size. Heat is
carried away from the device by being mounted on the
PCB. This value is directly effected by the material and
the copper pattern etc. of the PCB. The losses are
approximately 360mW. Enduring these losses becomes
possible in a lot of applications operating at 25C.
The overheating protection circuit operates when the
junction temperature reaches 150C (this happens when
the regulator is dissipating excessive power, outside
temperature is high, or heat radiation is bad). The output
current and the output voltage will drop when the
protection circuit operates. However, operation begins
again as soon as the output voltage drops and the
temperature of the chip decreases.
How to determine the thermal resistance when
mounted on PCB
The thermal resistance when mounted is expressed as
follows:
Tj=jaPD+Ta
Tj of IC is set around 150C. PD is the value when the
thermal sensor is activated.
If the ambient temperature is 25C, then:
150=jaPD+25
ja=125/PD (C /mW)
PD is easily calculated.
A simple way to determine PD is to calculate VInIIn
when the output side is shorted. Input current gradually
falls as output voltage rises after working thermal
shutdown. You should use the value when thermal
equilibrium is reached.
Fig12-6: How to determine DPD
25 50 100 150
PD (mW)
PD
Ta (°C)
75 125
DPD
2
3
4
5
Procedure (When mounted on PCB.)
1. Find PD (VInIIn when the output side is short-
circuited).
2. Plot PD against 25C.
3. Connect PD to the point corresponding to the 150C
with a straight line.
4. In design, take a vertical line from the maximum
operating temperature (e.g., 75C) to the derating
curve.
5. Read off the value of PD against the point at which the
vertical line intersects the derating curve. This is taken
as the maximum power dissipation DPd.
6. DPD (VIn,MAXVOut)=IOut (at 75C)
The maximum output current at the highest operating
temperature will be IOut DPD (VIn,MAX-VOut).
Please use the device at low temperature with better
radiation. The lower temperature provides better quality.
[TK635xxAB6]
AP-MS0035-E-00 - 26 - 2011/02
12-3-
. On/Off Control
It is recommended to turn the regulator Off when the
circuit following the regulator is not operating. A design
with little electric power loss can be implemented. We
recommend the use of the On/Off control of the regulator
without using a high side switch to provide an output
from the regulator. A highly accurate output voltage with
low voltage drop is obtained.
Because the control current is small, it is possible to
control it directly by CMOS logic.
Fig12-7: The use of On/Off control
REG
Vsat
On/Off Cont.
Control Terminal Voltage ((VCont)
On/Off State
VCont > 1.2V
On
VCont < 0.2V
Off
Parallel Connected On/Off Control
Fig12-8: The example of parallel connected IC
TK63542
TK63528
TK63515
4.2V
2.8V
1.5V
On/Off
Cont.
VIn VOut
The above figure is multiple regulators being controlled
by a single On/Off control signal. There is concern of
overheating, because the power loss of the low voltage
side IC (TK63515AB6) is large. The series resistor (R) is
put in the input line of the low output voltage regulator in
order to prevent over-dissipation. The voltage dropped
across the resistor reduces the large input-to-output
voltage across the regulator, reducing the power
dissipation in the device. When the thermal sensor works,
a decrease of the output voltage, oscillation, etc. may be
observed.
12-4-
. Influence by Light
When TK635xxAB6 (FC-4) is exposed to strong light,
the electrical characteristics change. Please confirm the
influence by light in your design.
[TK635xxAB6]
AP-MS0035-E-00 - 27 - 2011/02
12-5-
. Definition of term
Characteristics
Output Voltage (VOut)
The output voltage is specified with VIn=(VOutTYP+1V)
and IOut=5mA.
Maximum Output Current (IOut, MAX)
The rated output current is specified under the condition
where the output voltage drops to 90% of the value
specified with IOut=5mA. The input voltage is set to
VOutTYP+1V and the current is pulsed to minimize
temperature effect.
Dropout Voltage (VDrop)
The dropout voltage is the difference between the input
voltage and the output voltage at which point the
regulator starts to fall out of regulation. Below this value,
the output voltage will fall as the input voltage is reduced.
It is dependent upon the output voltage, the load current,
and the junction temperature.
Line Regulation (LinReg)
Line regulation is the ability of the regulator to maintain a
constant output voltage as the input voltage changes. The
line regulation is specified as the input voltage is changed
from VIn=VOut,TYP+1V to VIn=6V. It is a pulse
measurement to minimize temperature effect.
Load Regulation (LoaReg)
Load regulation is the ability of the regulator to maintain
a constant output voltage as the load current changes. It is
a pulsed measurement to minimize temperature effects
with the input voltage set to VIn=VOut,TYP+1V. The load
regulation is specified under an output current step
condition of 1mA to 50mA.
Ripple Rejection (RR)
Ripple rejection is the ability of the regulator to attenuate
the ripple content of the input voltage at the output. It is
specified with 500mVP-P, 1kHz super-imposed on the
input voltage, where VIn=VOut,TYP+1.5V. Ripple rejection
is the ratio of the ripple content of the output vs. input and
is expressed in dB.
Standby Current (IStandby)
Standby current is the current which flows into the
regulator when the output is turned off by the control
function (VCont=0V).
Protections
Over Current Sensor
The over current sensor protects the device when there is
excessive output current. It also protects the device if the
output is accidentally connected to ground.
Thermal Sensor
The thermal sensor protects the device in case the
junction temperature exceeds the safe value (Tj=150C).
This temperature rise can be caused by external heat,
excessive power dissipation caused by large input to
output voltage drops, or excessive output current. The
regulator will shut off when the temperature exceeds the
safe value. As the junction temperatures decrease, the
regulator will begin to operate again. Under sustained
fault conditions, the regulator output will oscillate as the
device turns off then resets. Damage may occur to the
device under extreme fault.
Please prevent the loss of the regulator when this
protection operates, by reducing the input voltage or
providing better heat efficiency.
ESD
MM : 200pF 0 150V or more
HBM : 100pF 1.5k 2000V or more
[TK635xxAB6]
AP-MS0035-E-00 - 28 - 2011/02
13-
. PACKAGE OUTLINE
4-bump flip chip : FC-4
M
Reference Mount Pad
4- 0.275
0.96
0.96
A
12
B
Mark
0.60
0.22
4- 0.30 0.05
A1 Pin Mark
±0.03
0.5
0.5
0.5
0.5
0.05
Lot No.
±0.03
±0.03
±0.06
±0.03
Unit : mm
Package Structure and Others
Base Material
:
Si
Mark Method
:
Laser
Terminal Material
:
Lead Free Solder Bump
Country of Origin
:
Japan
Solder Composition
:
Sn-2.5Ag
Marking
Part Number
Marking Code
Part Number
Marking Code
Part Number
Marking Code
TK63515AB6
L15
TK63529AB6
L29
TK63540AB6
L40
TK63518AB6
L18
TK63530AB6
L30
TK63525AB6
L25
TK63531AB6
L31
TK63526AB6
L26
TK63532AB6
L32
TK63527AB6
L27
TK63533AB6
L33
TK63528AB6
L28
TK63535AB6
L35
[TK635xxAB6]
AP-MS0035-E-00 - 29 - 2011/02
IMPORTANT NOTICE
These products and their specifications are subject to change without notice.
When you consider any use or application of these products, please make inquiries the sales office of
Asahi Kasei Microdevices Corporation (AKM) or authorized distributors as to current status of the
products.
Descriptions of external circuits, application circuits, software and other related information contained
in this document are provided only to illustrate the operation and application examples of the
semiconductor products. You are fully responsible for the incorporation of these external circuits,
application circuits, software and other related information in the design of your equipments. AKM
assumes no responsibility for any losses incurred by you or third parties arising from the use of these
information herein. AKM assumes no liability for infringement of any patent, intellectual property, or
other rights in the application or use of such information contained herein.
Any export of these products, or devices or systems containing them, may require an export license or
other official approval under the law and regulations of the country of export pertaining to customs
and tariffs, currency exchange, or strategic materials.
AKM products are neither intended nor authorized for use as critical componentsNote1) in any safety,
life support, or other hazard related device or systemNote2), and AKM assumes no responsibility for
such use, except for the use approved with the express written consent by Representative Director of
AKM. As used here:
Note1) A critical component is one whose failure to function or perform may reasonably be expected to
result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system
containing it, and which must therefore meet very high standards of performance and reliability.
Note2) A hazard related device or system is one designed or intended for life support or maintenance of
safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to
function or perform may reasonably be expected to result in loss of life or in significant injury or damage to
person or property.
It is the responsibility of the buyer or distributor of AKM products, who distributes, disposes of, or
otherwise places the product with a third party, to notify such third party in advance of the above
content and conditions, and the buyer or distributor agrees to assume any and all responsibility and
liability for and hold AKM harmless from any and all claims arising from the use of said product in
the absence of such notification.