PWM Step-up DC/DC Converter Controller
R1210Nxx2x SERIES NO. EA-064-071207
1
OUTLINE
The R1210Nxx2C/xx2D Series are CMOS-based PWM step-up DC/DC Converter controllers, with high
accuracy, low supply current.
Each of the R1210Nxx2x Series consists of an oscillator, a PWM circuit, a reference voltage unit, an error
amplifier, phase compensation circuit, resistors for voltage detection, a chip enable circuit, a controller against
drastic load transient and an output voltage detector. A low ripple, high efficiency step-up DC/DC converter can
be composed of this IC with only four external component s, or an inductor, a diode, a transistor and a cap acitor.
The R1210Nxx2x Series can detect drastic change of output volt age with a circuit controller, the load transient
response is improved.
Each of the R1210Nxx2x Series has a driver pin, or ‘EXT’ pin for external transistor. By connecting a power
transistor with low ON-resist an ce to EXT pin, a large current flows throug h an inductor, thus, large output current
can be supplied.
The built-in chip enable circuit can make the standby mode with ultra low quiescent current.
Since the package for these ICs is small SOT-23-5, high density mounting of the ICs on board is possibl e.
FEATURES
• External Components .......................................Only an inductor, a diode, a capacitor, and a transistor
• Standby Current................................................Max. 0.5µA
• Low Temperature-Drif t Coefficient of Output Voltage Typ. ±100ppm/°C
• Output Voltage ..................................................Stepwise Setting with a step of 0.1V in the range of
2.2V to 6.0V
• Two choices of Basic Oscillator Frequency......100kHz (xx2C), 180kHz (xx2D)
• Output Voltage Accuracy...................................±2.5%
• Small Package..................................................SOT-23-5 (Mini-mold)
• Low Ripple, Low Noise
• Oscillator Start-up Voltage ................................Max. 0.8V
APPLICATIONS
• Power source for battery-powered equipment.
• Power source for portable communication applia nces, cameras, VCRs
• Power source for appliances of which require higher voltage than battery voltage.
R1210Nxx2x
2
BLOCK DIAGRAMS
4
2
VOUT
EXT
CE
GND
Buffer
OSC
PWM Controller
Phase Comp.
Vref Circuit
Chip Enable
-
+
-
+
-
+
1
5
SELECTION GUIDE
In the R1210N Series, the output voltage, the oscill ator frequency, the optional functio n, and the tapi ng type for
the ICs can be selected at the user’s request.
The selection can be made by designating the part n umber as shown below;
R1210Nxx2x-xx-F ←Part Number
↑ ↑ ↑↑ ↑ ↑
a b c d e f
Code Contents
a Designation of Packa ge Type:
N: SOT-23-5
b Setting Output Voltage(VOUT):
Stepwise setting with a step of 0.1V in the range of 2.2V to 6.0V
c Designation of Driver
2: External Tr. Driver
d Designation of Oscillator Frequency
C: 100kHz
D: 180kHz
e Designation of Taping Type:
Ex. TR (Refer to Taping Specifications; TR type is the standard direction.)
f Designation of composition of pin plating:
-F: Lead free plating
R1210Nxx2x
3
PIN CONFIGURATION
SOT-23-5
54
LXGND
(mark side)
123
CE VOUT NC
PIN DESCRIPTIONS
Pin No Symbol Pin Description
1 CE Chip Enable Pin
2 VOUT Pin for Output Voltage
3 NC No Connection
4 GND Ground Pin
5 EXT External Transistor Drive Pin
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VOUT VOUT Pin Output Voltage -0.3 to 9.0 V
VEXT EXT Pin Output Voltage -0.3 to VOUT+0.3 V
VCE CE Pin Input Voltage -0.3 to 9.0 V
IEXT EXT Pin Output Current ±40 mA
PD Power Dissipation 420 mW
Topt Operating Temperature Range −40 to +85 °C
Tstg Storage Temperature Range −55 to +125 °C
*1) For Power Dissipation, please refe r to PACKAGE INFORMATION to be described.
R1210Nxx2x
4
ELECTRICAL CHARACTERISTICS
• R1210Nxx2x Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
VOUT Output Voltage VIN=VSET×0.6, IOUT=1mA ×0.975 ×1.025 V
VIN Maximum Input Voltage 8 V
∆VOUT/
∆T Step-up Output Voltage
Temperature Coefficient −40°C
<
=
Topt
<
=
85°C ±100 ppm/°C
Vstart Start-up Voltage VIN=0V→2V 0.8 V
Istandby Supply Current 3(Standby) VOUT=6.5V,VCE=0V 0.5
µA
18 35
µA
(xx2C)
VOUT= VSET×0.96 EXT at no load
2.2V
<
=
VSET
<
=
2.4V 23 45
µA
(xx2D)
20 40
µA
(xx2C)
VOUT= VSET×0.96 EXT at no load
2.5V
<
=
VSET
<
=
3.0V 25 50
µA
(xx2D)
25 50
µA
(xx2C)
VOUT= VSET×0.96 EXT at no load
3.1V
<
=
VSET
<
=
3.9V 30 60
µA
(xx2D)
30 60
µA
(xx2C)
VOUT= VSET×0.96 EXT at no load
4.0V
<
=
VSET
<
=
4.4V 35 70
µA
(xx2D)
35 70
µA
(xx2C)
VOUT= VSET×0.96 EXT at no load
4.5V
<
=
VSET
<
=
4.9V 40 80
µA
(xx2D)
45 90
µA
(xx2C)
VOUT= VSET×0.96 EXT at no load
5.0V
<
=
VSET
<
=
5.4V 50 100
µA
(xx2D)
50 100
µA
(xx2C)
IDD1 Supply Current 1
VOUT= VSET×0.96 EXT at no load
5.5V
<
=
VSET
<
=
6.0V 55 110
µA
(xx2D)
10 15
µA
(xx2C)
IDD2 Supply Current 2 VOUT=VCE=VSET+0.5 15 22
µA
(xx2D)
R1210Nxx2x
5
Symbol Item Conditions Min. Typ. Max. Unit
2.2V
<
=
VSET
<
=
2.5V
VEXT=VOUT-0.4V -1.0 mA
2.6V
<
=
VSET
<
=
3.0V
VEXT=VOUT-0.4V -2.0 mA
3.1V
<
=
VSET
<
=
3.5V
VEXT=VOUT-0.4V -2.5 mA
3.6V
<
=
VSET
<
=
4.0V
VEXT=VOUT-0.4V -3.0 mA
4.1V
<
=
VSET
<
=
4.5V
VEXT=VOUT-0.4V -3.5 mA
4.6V
<
=
VSET
<
=
5.0V
VEXT=VOUT-0.4V -4.0 mA
5.1V
<
=
VSET
<
=
5.5V
VEXT=VOUT-0.4V -4.5 mA
IEXTH EXT “H” Outp ut Current
5.6V
<
=
VSET
<
=
6.0V
VEXT=VOUT-0.4V -5.0 mA
80 100 120 kHz
(xx2C)
fosc Maximum Oscillator
Frequency VOUT=VCE=VSET×0.96 144 180 216 kHz
(xx2D)
0.5
kHz/°C
(xx2C)
∆ fosc/
∆T Oscillator Frequency
Temperature Coefficient −40°C
<
=
Topt
<
=
85°C 0.6
kHz/°C
(xx2D)
Maxdty Oscillator Maximum
Duty Cycle VOUT=VCE=VSET×0.96,
(VEXT “H” Side) 70 85 97 %
2.2V
<
=
VSET
<
=
2.5V,VEXT=0.4V 1.0 mA
2.6V
<
=
VSET
<
=
3.0V,VEXT=0.4V 2.0 mA
3.1V
<
=
VSET
<
=
3.5V,VEXT=0.4V 2.5 mA
3.6V
<
=
VSET
<
=
4.0V,VEXT=0.4V 3.0 mA
4.1V
<
=
VSET
<
=
4.5V,VEXT=0.4V 3.5 mA
4.6V
<
=
VSET
<
=
5.0V,VEXT=0.4V 4.0 mA
5.1V
<
=
VSET
<
=
5.5V,VEXT=0.4V 4.5 mA
IEXTL EXT “L” Output Current
5.6V
<
=
VSET
<
=
6.0V,VEXT=0.4V 5.0 mA
VCEH CE “H” Input Voltage VOUT=VSET×0.96 0.9 V
VCEL CE “L” In put Voltage VOUT=VSET×0.96 0.3 V
ICEH CE “H” Input Current VOUT=VCE=6.5V -0.1 0.0 0.1 µA
ICEL CE “L” Input Current VIN=6.5V, VCE=0V -0.1 0.0 0.1
µA
*Note: VSET means setting Output Voltage.
R1210Nxx2x
6
TEST CIRCUITS
L
Tr
VIN
Cb
CL
Rb
SD
EXT
GND
VOUT
CE
V
EXT V
OUT
GND CE
C
OSCILLOSCOPE
Test Circuit 1 Test Circuit 2
EXT
GND CE
V
OUT
A
EXT
GND CE
V
OUT
A
Test Circuit 3 Test Circuit 4
OSCILLOSCOPE
EXT
GND CE
V
OUT
C
OSCILLOSCOPE
EXT
GND CE
VOUT
Test Circuit 5 Test Circuit 6
Inductor (L) : 27µH (Sumida Electric Co., Ltd. CD104)
Diode (SD) : RB491D (Rohm, Schottky Type)
Capacitor (CL) : 47µF×2 (Tantalum Type)
Transistor (Tr) : 2SD1628G
Base Resistor (Rb) : 300Ω
Base Capacitor (Cb) : 0.01µF(Ceramic Type)
The typical characteristics were obtained by use of these test circuits.
Test Circuit 1 : Typical Characteristics 1) 2) 3) 4) 5)
Test Circuit 2 : Typical Characteristics 9) 10)
Test Circuit 3 : Typical Characteristics 6) 7)
Test Circuit 4 : Typical Characteristics 8)
Test Circuit 5 : Typical Characteristics 11)
Test Circuit 6 : Typical Characteristics 12)
R1210Nxx2x
7
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1210N302C R1210N302D
L:27µH
VIN:1.5V VIN:2.0V
VIN:2.5V
VIN:0.9V
Output Current IOUT (mA)
0 200 400 600 800
3.2
3.1
3.0
2.9
2.8
Output Voltage VOUT(V)
L:27µH
V
IN
:1.5V V
IN
:2.0V
V
IN
:2.5V
V
IN
:0.9V
Output Current I
OUT
(mA)
0 200 400 600 800
3.2
3.1
3.0
2.9
2.8
Output Voltage V
OUT
(V)
R1210N502C R1210N502D
L:27µH
V
IN
:3.0V
V
IN
:2.0V
V
IN
:4.0V
V
IN
:1.5V
Output Current I
OUT
(mA)
0 200 400 600 800
5.4
5.2
5.0
4.8
4.6
4.4
Output Voltage V
OUT
(V)
L:27µH
V
IN
:3.0V
V
IN
:2.0V
V
IN
:4.0V
V
IN
:1.5V
Output Current I
OUT
(mA)
0 200 400 600 800
5.4
5.2
5.0
4.8
4.6
4.4
Output Voltage V
OUT
(V)
2) Efficiency vs. Output Current
R1210N302C R1210N302D
L:27µH
V
IN
:2.5V
V
IN
:1.5V
V
IN
:2.0V
V
IN
:0.9V
Output Current I
OUT
(mA)
0 200 400 600 800
100
80
60
40
20
0
Efficiency η (%)
L:27µH
VIN:2.5V
VIN:1.5V
VIN:2.0V
VIN:0.9V
Output Current IOUT (mA)
0 200 400 600 800
100
80
60
40
20
0
Efficiency η (%)
R1210Nxx2x
8
R1210N502C R1210N502D
L:27µH
VIN:4.0V
VIN:2.0V
VIN:1.5V
VIN:3.0V
Output Current IOUT (mA)
0 200 400 600 800
100
80
60
40
20
0
Efficiency η (%)
L:27µH
VIN:4.0V
VIN:2.0V
VIN:1.5V
VIN:3.0V
Output Current IOUT (mA)
0 200 400 600 800
100
80
60
40
20
0
Efficiency η (%)
3) Ripple Voltage vs. Output Current
R1210N302C R1210N302D
L:27µH
V
IN
:2.5V
V
IN
:0.9V V
IN
:1.5V
Output Current I
OUT
(mA)
0 200 400 600 800
280
240
200
160
120
80
40
0
Ripple Voltage Vripple (mV)
L:27µH
V
IN
:2.5V
V
IN
:0.9V
V
IN
:1.5V
Output Current I
OUT
(mA)
0 200 400 600 800
280
240
200
160
120
80
40
0
Ripple Voltage Vripple (mV)
R1210N502C R1210N502D
L:27µH
V
IN
:4.0V
V
IN
:1.5V
V
IN
:3.0V
Output Current I
OUT
(mA)
0 200 400 600 800
280
240
200
160
120
80
40
0
Ripple Voltage Vripple (mV)
L:27µH
V
IN
:4.0V
V
IN
:0.9V
V
IN
:1.5V
V
IN
:3.0V
Output Current I
OUT
(mA)
0 200 400 600 800
280
240
200
160
120
80
40
0
Ripple Voltage Vripple (mV)
R1210Nxx2x
9
4) Start-up Voltage/ Hold-on Voltage vs. Output Current (Topt=25°C)
R1210N302C R1210N302D
L:27µH
Vhold
Vstart
Output Current IOUT(mA)
0 20 40 60 10080
1.6
1.2
0.8
0.4
0.0
Start-up/Hold-on Voltage
Vstart/Vhold(V)
Start-up/Hold-on Voltage
Vstart/Vhold(V)
L:27µH
Vhold
Vstart
Output Current I
OUT
(mA)
0 20 40 60 10080
1.6
1.2
0.8
0.4
0.0
R1210N502C R1210N502D
Start-up/Hold-on Voltage
Vstart/Vhold(V)
L:27µH
Vhold
Vstart
Output Current I
OUT
(mA)
0 20 40 60 10080
1.6
1.2
0.8
0.4
0.0
Start-up/Hold-on Voltage
Vstart/Vhold(V)
L:27µH
Vhold
Vstart
Output Current IOUT (mA)
0 20 40 60 10080
1.6
1.2
0.8
0.4
0.0
5) Output Voltage vs. Temperature
R1210N302C R1210N302D
Output Voltage V
OUT
(V)
L:27µH
I
OUT
:30mA
I
OUT
:0mA
I
OUT
:100mA
Temperature Topt(°C)
-50 -25 0 25 50 10075
3.10
3.05
3.00
2.95
2.90
Output Voltage V
OUT
(V)
L:27µH
I
OUT
:30mA
I
OUT
:0mA
I
OUT
:100mA
Temperature Topt(°C)
-50 -25 0 25 50 10075
3.10
3.05
3.00
2.95
2.90
R1210Nxx2x
10
R1210N502C R1210N502D
Output Voltage V
OUT
(V)
L:27µH
I
OUT
:30mA
I
OUT
:0mA
I
OUT
:100mA
Temperature Topt(°C)
-50 -25 0 25 50 10075
5.15
5.10
5.05
5.00
4.95
4.90
4.85
Output Voltage V
OUT
(V)
L:27µH
I
OUT
:30mA
I
OUT
:0mA
I
OUT
:100mA
Temperature Topt(°C)
-50 -25 0 25 50 10075
5.15
5.10
5.05
5.00
4.95
4.90
4.85
6) Supply Current 1 vs. Temperature
R1210N302C R1210N302D
Supply Current I
ss
1(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
40
30
20
10
0
Supply Current I
ss
1(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
40
30
20
10
0
R1210N502C R1210N502D
Supply Current I
ss
1(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
80
60
40
20
0
Supply Current I
ss
1(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
80
60
40
20
0
R1210Nxx2x
11
7) Supply Current 2 vs. Temperature
R1210N302C R1210N302D
Supply Current2 Iss2(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
25
60
15
10
0
5
Supply Current2 Iss2 (µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
25
60
15
10
0
5
R1210N502C R1210N502D
Supply Current2 Iss2 (µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
25
60
15
10
0
5
Supply Current2 Iss2 (µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
25
60
15
10
0
5
8) Supply Current 3 vs. Temperature
R1210N302C R1210N302D
Temperature Topt(°C)
Supply Current 3 Istandby (µA)
0
0.0
-0.2
0.4
0.2
0.8
1.0
0.6
25 1007550-50 -25
Supply Current3 Istandby(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
1.0
0.8
0.6
0.4
0.2
-0.2
0.0
R1210Nxx2x
12
R1210N502C R1210N502D
Supply Current3 Istandby(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
1.0
0.8
0.6
0.4
0.2
-0.2
0.0
Supply Current3 Istandby(µA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
1.0
0.8
0.6
0.4
0.2
-0.2
0.0
9) Oscillator Frequency vs. Temperature
R1210N302C R1210N302D
Oscillator Frequency fosc(kHz)
Temperature Topt(°C)
-50 -25 0 25 50 10075
300
250
200
150
100
0
50
Oscillator Frequency fosc(kHz)
Temperature Topt(°C)
-50 -25 0 25 50 10075
300
250
200
150
100
0
50
R1210N502C R1210N502D
Oscillator Frequency fosc(kHz)
Temperature Topt(°C)
-50 -25 0 25 50 10075
300
250
200
150
100
0
50
Oscillator Frequency fosc(kHz)
Temperature Topt(°C)
-50 -25 0 25 50 10075
300
250
200
150
100
0
50
R1210Nxx2x
13
10) Maximum Duty Cycle vs. Temperature
R1210N302C R1210N302D
Maximum Duty Cycle Duty(%)
Temperature Topt(°C)
-50 -25 0 25 50 10075
100
90
80
70
60
40
50
Maximum Duty Cycle Duty(%)
Temperature Topt(°C)
-50 -25 0 25 50 10075
100
90
80
70
60
40
50
R1210N502C R1210N502D
Maximum Duty Cycle Duty(%)
Temperature Topt(°C)
-50 -25 0 25 50 10075
100
90
80
70
60
40
50
Maximum Duty Cycle Duty(%)
Temperature Topt(°C)
-50 -25 0 25 50 10075
100
90
80
70
60
40
50
11) EXT “H” Output Current vs. Temperature
R1210N302C R1210N302D
EXT "H" Output Current
I
EXTH
(mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
EXT "H" Output Current
IEXTH (mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
R1210Nxx2x
14
R1210N502C R1210N502D
EXT "H" Output Current
I
EXTH
(mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
EXT "H" Output Current
I
EXTH
(mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
12) EXT “L” Output Current vs. Temperature
R1210N302C R1210N302D
EXT "L" Output Current
I
EXTL
(mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
EXT "L" Output Current
I
EXTL
(mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
R1210N502C R1210N502D
EXT "L" Output Current
IEXTL (mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
EXT "L" Output Current
I
EXTL
(mA)
Temperature Topt(°C)
-50 -25 0 25 50 10075
20
15
10
0
5
R1210Nxx2x
15
13) CE “H” Input Voltage vs. Temperature
R1210N602C R1210N602D
CE "H" Input Voltage V
CEH
(V)
Temperature Topt(°C)
-50 -25 0 25 50 10075
0.9
0.8
0.7
0.6
0.5
0.3
0.4
CE "H" Input Voltage V
CEH
(V)
Temperature Topt(°C)
-50 -25 0 25 50 10075
0.9
0.8
0.7
0.6
0.5
0.3
0.4
14) CE “L” Input Voltage vs. Temperature
R1210N602C R1210N602D
CE "L" Input Voltage V
CEL
(V)
Temperature Topt(°C)
-50 -25 0 25 50 10075
0.9
0.8
0.7
0.6
0.5
0.3
0.4
CE "L" Input Voltage V
CEL
(V)
Temperature Topt(°C)
-50 -25 0 25 50 10075
0.9
0.8
0.7
0.6
0.5
0.3
0.4
15) Output Waveform at Power-on (Topt=25°C)
((R1210N502 C)) (VIN: 0V→3.0V)
I
OUT: 1mA IOUT: 100mA
M50.0ms
VIN
VOUT
2V/div
M50.0ms
VIN
VOUT
2V/div
R1210Nxx2x
16
((R1210N502 D)) (VIN: 0V→3.0V)
I
OUT: 1mA IOUT: 100mA
M50.0ms
VIN
VOUT
2V/div
M50.0ms
V
IN
V
OUT
2V/div
((R1210N302 C)) (VIN: 0V→1.5V)
I
OUT: 1mA IOUT: 100mA
M50.0ms
V
IN
V
OUT
1V/div
M50.0ms
V
IN
V
OUT
1V/div
((R1210N302 D)) (VIN: 0V→1.5V)
I
OUT: 1mA IOUT: 100mA
1V/div
M50.0ms
V
IN
V
OUT
M50.0ms
V
IN
V
OUT
1V/div
R1210Nxx2x
17
16) Load Transient Response (Topt=25°C)
((R1210N502 C)) (VIN: 3.0V,IOUT:1mA→200mA)
M50.0ms
I
OUT
V
OUT
200mV
M50.0ms
I
OUT
V
OUT
200mV
((R1210N502 D)) (VIN: 3.0V,IOUT:1mA→200mA)
M50.0ms
I
OUT
V
OUT
200mV
M50.0ms
I
OUT
V
OUT
200mV
((R1210N302 C)) (VIN: 1.5V,IOUT:1mA→100mA)
M50.0ms
I
OUT
V
OUT
100mV
M50.0ms
I
OUT
V
OUT
100mV
R1210Nxx2x
18
((R1210N302 D)) (VIN: 1.5V,IOUT:1mA→100mA)
M50.0ms
IOUT
VOUT
100mV
M50.0ms
I
OUT
V
OUT
100mV
PAC
K
AGE INFORMATION PE-SOT-23-5-071228
• SOT-23-5 (SC-74A) Unit: mm
PACKAGE DIMENSIONS
2.9±0.2
0.4±0.1
1.9±0.2
(0.95) (0.95)
54
123
+0.2
−0.1
1.6
+0.2
−0.1
1.1
+0.1
−0.05
0.15
2.8–0.3
0 to 0.1
0.8±0.1
0.2 Min.
TAPING SPECIFICATION
2.0Max.
0.3–0.1 4.0–0.1 2.0–0.05
4.0–0.1
3.3
3.2
8.0–0.3
1.75–0.1
3.5–0.05
φ1.5+0.1
0
∅1.1±0.1
TR
User Direction of Feed
TAPING REEL DIMENSIONS REUSE REEL (EIAJ-RRM-08Bc)
(1reel=3000pcs)
2±0.5
11.4±1.0
9.0±0.3
13±0.2
∅
60
∅+1
0
180
∅0
−1.5
21±0.8
PAC
K
AGE INFORMATION PE-SOT-23-5-071228
POWER DISSIPATION (SOT-23-5)
This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board.
This specification is based on the measurement at the condition below:
(Power Dissip ation (SOT-23-5) is substitution of SOT-23-6.)
Measurement Conditions
Standard Land Pattern
Environment Mounting on Board (Wind velocity=0m/s)
Board Material Glass cloth epoxy plastic (Dou ble sided)
Board Dimensions 40mm × 40mm × 1.6mm
Copper Ratio Top side : Approx. 50% , Back side : Approx. 50%
Through-hole φ0.5mm × 44pcs
Measurement Result (Topt=25°C, Tjmax=125°C)
Standard Land Pattern Free Air
Power Dissipation 420mW 250mW
Thermal Resistance θja=(125−25°C)/0.42W=238°C/W 400°C/W
0 50 10025 75 85 125 150
Ambient Temperature (°C)
0
200
100
300
400
250
420
500
600
Power Dissipation P
D
(mW)
On Board
Free Air
40
40
Power Dissipation Measurement Board Pattern
IC Mount Area Unit : mm
RECOMMENDED LAND PATTERN
0.7 MAX.
0.95
0.951.9
2.4
1.0
(Unit: mm)
POWER MANAGEMENT ICs MARK INFORMATIONS ME-R1210N-0310
R1210N SERIES MARK SPECIFICATION
• SOT-23-5 (SC-74A)
1
234
1
,
2
: Product Code (refer to Part Number vs. Product Code)
3
,
4
: Lot Number
• Part Number vs. Product Code
Product Code Product Code Product Code Product Code
Part Number
1
2
Part Number
1
2
Part Number
1
2
Part Number
1
2
R1210N221A 2 Q R1210N511C 1 Y R1210N551D W R R1210N592C Y 9
R1210N231A 3 Q R1210N521C 2 Y R1210N561D W S R1210N602C Z W
R1210N241A 4 Q R1210N531C 3 Y R1210N571D W T R1210N222D Y C
R1210N251A 5 Q R1210N541C 4 Y R1210N581D W U R1210N232D Y D
R1210N261A 6 Q R1210N551C 5 Y R1210N591D W V R1210N242D Y E
R1210N271A 7 Q R1210N561C 6 Y R1210N601D Y W R1210N252D Y F
R1210N281A 8 Q R1210N571C 7 Y R1210N222C X 2 R1210N262D Y G
R1210N291A 9 Q R1210N581C 8 Y R1210N232C X 3 R1210N272D Y H
R1210N301A 0 R R1210N591C 9 Y R1210N242C X 4 R1210N282D Y J
R1210N311A 1 R R1210N601C X W R1210N252C X 5 R1210N292D Y K
R1210N321A 2 R R1210N221D 2 Z R1210N262C X 6 R1210N302D Y L
R1210N331A 3 R R1210N231D 3 Z R1210N272C X 7 R1210N312D Y M
R1210N341A 4 R R1210N241D 4 Z R1210N282C X 8 R1210N322D Y N
R1210N351A 5 R R1210N251D 5 Z R1210N292C X 9 R1210N332D Y P
R1210N221C 2 U R1210N261D 6 Z R1210N302C X A R1210N342D Y Q
R1210N231C 3 U R1210N271D 7 Z R1210N312C X B R1210N352D Y R
R1210N241C 4 U R1210N281D 8 Z R1210N322C X C R1210N362D Y S
R1210N251C 5 U R1210N291D 9 Z R1210N332C X D R1210N372D Y T
R1210N261C 6 U R1210N301D W 0 R1210N342C X E R1210N382D Y U
R1210N271C 7 U R1210N311D W 1 R1210N352C X F R1210N392D Y V
R1210N281C 8 U R1210N321D W 2 R1210N362C X G R1210N402D Z 0
R1210N291C 9 U R1210N331D W 3 R1210N372C X H R1210N412D Z 1
R1210N301C 0 W R1210N341D W 4 R1210N382C X J R1210N422D Z 2
R1210N311C 1 W R1210N351D W 5 R1210N392C X K R1210N432D Z 3
R1210N321C 2 W R1210N361D W 6 R1210N402C X L R1210N442D Z 4
R1210N331C 3 W R1210N371D W 7 R1210N412C X M R1210N452D Z 5
R1210N341C 4 W R1210N381D W 8 R1210N422C X N R1210N462D Z 6
R1210N351C 5 W R1210N391D W 9 R1210N432C X P R1210N472D Z 7
R1210N361C 6 W R1210N401D W A R1210N442C X Q R1210N482D Z 8
R1210N371C 7 W R1210N411D W B R1210N452C X R R1210N492D Z 9
R1210N381C 8 W R1210N421D W C R1210N462C X S R1210N502D Z A
R1210N391C 9 W R1210N431D W D R1210N472C X T R1210N512D Z B
R1210N401C 0 X R1210N441D W E R1210N482C X U R1210N522D Z C
R1210N411C 1 X R1210N451D W F R1210N492C X V R1210N532D Z D
R1210N421C 2 X R1210N461D W G R1210N502C Y 0 R1210N542D Z E
R1210N431C 3 X R1210N471D W H R1210N512C Y 1 R1210N552D Z F
R1210N441C 4 X R1210N481D W J R1210N522C Y 2 R1210N562D Z G
R1210N451C 5 X R1210N491D W K R1210N532C Y 3 R1210N572D Z H
R1210N461C 6 X R1210N501D 4 V R1210N542C Y 4 R1210N582D Z J
R1210N471C 7 X R1210N511D W M R1210N552C Y 5 R1210N592D Z K
R1210N481C 8 X R1210N521D W N R1210N562C Y 6 R1210N602D Z L
R1210N491C 9 X R1210N531D W P R1210N572C Y 7
R1210N501C 0 Y
R1210N541D W Q
R1210N582C Y 8
