AP7342
Document number: DS37614 Rev. 2 - 2
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AP7342
DUAL 150mA HIGH PSRR LOW NOISE LDO WITH ENABLE
Description
The AP7342 is a dual
low dropout regulator with high output voltage
accuracy, low R
DSON
, high PSRR, low
output noise and low quiescent
current. This regulator is based on a CMOS process.
Each regulator
includes a voltage reference, error amplifier, current
limit circuit and an enable input to turn on/off output
. With the
integrated resistor network,
fixed output voltage versions can be
delivered.
With its low power consumption and line and load transient response,
the AP7342 is well
suited for low power handheld communication
equipment.
The AP7342 is packaged in X2-DFN1212-6
package and allows for
smallest footprint and dense PCB layout.
Features
• Low V
IN
and Wide V
IN
Range: 1.7V to 5.25V
• Guarantee Output Current: 150mA
• V
OUT
Accuracy ±1%
• Ripple Rejection: 75dB at 1kHz
• Low Output Noise: 60µVrms from 10Hz to 100kHz
• Quiescent Current as Low as 35µA
• V
OUT
Fixed 1.2V to 3.6V
• Totally Lead-Free & and Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free, Green Device (Note 3)
Pin Assignments
Applications
• Smart Phone/PAD
• RF Supply
• Cameras
• Portable Video
• Portable Media Player
• Wireless Adapter
• Wireless Communication
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
AP7342
Document number: DS37614 Rev. 2 - 2
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AP7342
Pin Descriptions
Pin Number Pin Name Function
1 V
OUT1
Channel 1 Output Voltage Pin
2 V
OUT2
Channel 2 Output Voltage Pin
3 GND Ground
4 EN2
Chanel 2 Enable Pin
This pin should be driven either high or low and must not be floating. Driving this pin high
enables channel 2 output, while pulling it low puts Chanel 2
regulator into shutdown
mode.
5 V
IN
Power Input Pin
6 EN1
Chanel 1 Enable Pin
This pin should be driven either high or low and must not be floating. Driving this pin high
enables channel 1 output, while pulling it low puts Chanel 1
regulator into shutdown
mode.
– Thermal PAD
In PCB layout, it is preferred
to use large copper area to cover this pad for better thermal
dissipation, then connect this area to GND or leave it open. However,
do not use it as
GND electrode function alone.
Functional Block Diagram
AP7342 (No Discharge) AP7342 (With Discharge)
AP7342
Document number: DS37614 Rev. 2 - 2
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AP7342
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.) (Note 4)
Symbol Parameter Rating Unit
V
IN
Input Voltage 6.0 V
V
EN
Input Voltage at EN Pins 6.0 V
V
OUT
Output Voltage -0.3 to V
IN
+0.3 V
I
OUT
Output Current 180 mA
P
D
Power Dissipation 600 mW
T
A
Operating Ambient Temperature -40 to +85 °C
T
STG
Storage Temperature -55 to +125 °C
Note: 4. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may
affect device reliability.
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Min Max Unit
V
IN
Input Voltage 1.7 5.25 V
I
OUT
Output Current 0 150 mA
T
A
Operating Ambient Temperature -40 +85 °C
AP7342
Document number: DS37614 Rev. 2 - 2
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AP7342
Electrical Characteristics
(@T
A
= +25°C, V
IN
= V
OUT
+1V (V
OUT
> 1.5V), V
IN
= 2.5V (V
OUT
≤ 1.5V), I
OUT
= 1mA, C
IN
= C
OUT
= 1.0µF, unless otherwise specified.)
Parameter Conditions Min Typ Max Unit
Input Voltage T
A
= -40°C to +85°C 1.7 – 5.25 V
Output Voltage Accuracy (Note 11)
V
IN
= (V
OUT-Nom
+1.0V) to
5.25V,
I
OUT
= 1mA to 150mA
T
A
= +25°C -1 – 1
%
T
A
= -40°C to +85°C
-1.5 – 1.5
Line Regulation (∆V
OUT
/∆V
IN
/V
OUT
) V
IN
= (V
OUT-Nom
+1.0V) to 5.25V, I
OUT
= 1.0mA – 0.02 0.1 %/V
Load Regulation (∆V
OUT
/∆I
OUT
) V
IN
= V
OUT-Nom
+1.0V, I
OUT
= 1mA to 150mA – 15 30 mV
Quiescent Current (Note 6)
Set EN1 high, set EN2 low, or set EN2 high,
set EN1 low, No load – 35 50 µA
Set EN1/EN2 high, No load – 70 100 µA
I
STANDBY
Set EN1/EN2 low, No load – 0.1 1.0 µA
Output Current – 300 – – mA
Fold-back Short Current (Note 7) V
OUT
short to ground – 55 – mA
PSRR (Note 8)
V
IN
= (V
OUT
+1V) V
DC
+
0.2Vp-pAC,
V
OUT
≥1.8V, I
OUT
= 30mA
f = 1kHz – 75 – dB
Output Noise Voltage (Notes 8 & 9) BW = 10Hz to 100kHz, I
OUT
= 30mA – 60 – µVrms
Dropout Voltage (Note 5) I
OUT
= 150mA
V
OUT
≤ 1.2V – 0.48 0.59
V
1.2V < V
OUT
≤ 1.4V – 0.39 0.50
1.4V < V
OUT
≤ 1.7V – 0.35 0.44
1.7V < V
OUT
≤ 2.1V – 0.30 0.39
2.1V < V
OUT
≤ 2.5V – 0.26 0.34
2.5V < V
OUT
≤ 3.0V – 0.25 0.30
3.0V < V
OUT
≤ 3.6V – 0.22 0.29
Output Voltage Temperature Coefficient I
OUT
= 30mA, T
A
= -40°C to +85°C – ±30 – ppm/°C
EN Input Low Voltage – 0 – 0.5 V
EN Input High Voltage – 1.3 – 5.25 V
EN Input Leakage V
EN
= 0V, V
IN
= 5.0V or V
EN
= 5.0V, V
IN
= 0V -1.0 – 1.0 µA
On Resistance of N-Channel for Auto-
Discharge (Note 10)
V
IN
= 4.0V, V
EN
= 0V
(Disabled) D Version, Chanel 1 & 2 – 50 – Ω
Notes: 5. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value.
6. Quiescent current is defined here is the difference in current between the input and the output.
7. Short circuit current is measured with V
OUT
pulled to GND.
8. This specification is guaranteed by design.
9. To make sure lowest environment noise minimizes the influence on noise measurement.
10. AP7342 has 2 options for output, built-in discharge and non-discharge
11. Potential multiple grades based on following output voltage accuracy.
AP7342
Document number: DS37614 Rev. 2 - 2
Typical Characteristic
(cont.)
Load Transient Response Waveforms(V
2.8V
Time t (µs)
Output Voltage
Input Voltage
0 20 40 60 80
Output Voltage V
OUT
(V)
2.80
2.78
2.82
1.8V
Time t (µs)
Output Voltage
Input Voltage
0 20 40 60 80
Output Voltage V
OUT
(V)
1.80
1.78
1.82
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Load Transient Response Waveforms(V
IN
=V
OUT
+1V, C
IN
=C
OUT1
=C
OUT2
=0.47
µ
4
3
2
Input Voltage V
IN
(V)
0 20 40 60 80
4
3
2
Input Voltage V
IN
(V)
March 2015
© Diodes Incorporated
AP7342
µF, T
A
=25°C)
AP7342
Document number: DS37614 Rev. 2 - 2
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AP7342
Typical Characteristics
(cont.)
Load Transient Response Waveforms(V
IN
=V
OUT
+1V, C
IN
=C
OUT1
=C
OUT2
=0.47µF, T
A
= +25°C)
Turn On Waveform of Output Discharge versions (V
IN
=V
OUT
+1V, C
IN
=C
OUT1
=C
OUT2
=0.47µF, T
A
= +25°C)
2.8V
Time t (µs)
Output Voltage
Output Current
0.1mA
↔
150mA
0 80 160 240 320 400
Output Voltage V
OUT
(V)
200
100
0
C
OUT
=0.47µF
Output Current I
OUT
(mA)
2.9
2.8
2.7
3.1
3.0
2.9
Output Voltage
Iout=30mA
1.8V
Time t (µs)
Output Voltage
Output Current
0.1mA
↔
150mA
0 80 160 240 320 400
Output Voltage V
OUT
(V)
200
100
0
C
OUT
=0.47µF
Output Current I
OUT
(mA)
1.9
1.8
1.7
3.4
3.3
3.2
Output Voltage
Iout=30mA
2.8V
Time t (µs)
Output Voltage
Output Current
50mA
↔
100mA
0 80 160 240 320 400
Output Voltage V
OUT
(V)
150
100
50
0
C
OUT
=0.47µF
Output Current I
OUT
(mA)
2.9
2.8
2.7
3.1
3.0
2.9
Output Voltage
Iout=30mA
1.8V
Time t (µs)
Output Voltage
Output Current
50mA
↔
100mA
0 80 160 240 320 400
Output Voltage V
OUT
(V)
150
100
50
0
C
OUT
=0.47µF
Output Current I
OUT
(mA)
1.9
1.8
1.7
3.4
3.3
3.2
Output Voltage
Iout=30mA
AP7342
Document number: DS37614 Rev. 2 - 2
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AP7342
Typical Characteristics
(cont.)
Turn Off Waveform of Output Discharge versions (V
IN
=V
OUT
+1V, C
IN
=C
OUT1
=C
OUT2
=0.47µF, T
A
= +25°C)
Application Information
Output Capacitor
An output capacitor (C
OUT
) is needed to improve transient response and maintain stability. The AP7342 is stable with very small ceramic output
capacitors. The ESR (Equivalent Series Resistance) and capacitance drives the selection. If the application has large load variations, it is
recommended to utilize low-ESR bulk capacitors. It is recommended to place ceramic capacitors as close as possible to the load and the GND pin
and care should be taken to reduce the impedance in the layout.
Input Capacitor
To prevent the input voltage from dropping during load steps, it is recommended to utilize an input capacitor (C
IN
). A minimum 0.47µF ceramic
capacitor is recommended between V
IN
and GND pin to decouple input power supply glitch. This input capacitor must be located as close as
possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both V
IN
and GND pin.
Enable Control
The AP7342 is turned on by setting the EN pins high, and is turned off by pulling it low. If this feature is not used, the EN pins should be tied to V
IN
pin to keep the regulator output on at all time. To ensure proper operation, the signal source used to drive the EN pins must be able to swing above
and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section.
Short Circuit Protection
When V
OUT
pins are short-circuit to GND, short circuit protection will be triggered and clamp the output current to approximately 60mA. This feature
protects the regulator from overcurrent and damage due to overheating.
Layout Considerations
For good ground loop and stability, the input and output capacitors should be located close to the input, output, and GND pin of the device. The
regulator GND pin should be connected to the external circuit ground to reduce voltage drop caused by trace impedance. Ground plane is generally
used to reduce trace impedance. Wide trace should be used for large current paths from V
IN
to V
OUT
and load circuit.
2.8V
Time t (µs)
Output Voltage
CE Input Voltage
0 40 80 120 160 200
Output Voltage V
OUT
(V)
0
2
2
4
CE Input Voltage V
CE
(V)
I
OUT
=0mA
I
OUT
=30mA
I
OUT
=150mA
0
4
1.8V
Time t (µs)
Output Voltage
CE Input Voltage
0 40 80 120 160 200
Output Voltage V
OUT
(V)
0
1
3
2
1
2
CE Input Voltage V
CE
(V)
I
OUT
=0mA
I
OUT
=30mA
I
OUT
=150mA
0
AP7342
Document number: DS37614 Rev. 2 - 2
ESR vs. Output Current
Ceramic type output capacitor is recommended for this series; however, the other output capacitors with low ESR
between I
OUT
(Output Current) and ESR of an output capacitor are shown
Measurement Conditions:
Frequency Band: 10Hz to 2MHz
Ordering Information
CH1/
CH
Output Discharge
CH
1
12 : 1.
2
15 : 1.
5
18 : 1.
8
25 : 2.
5
28 : 2.
8
30 : 3.
0
33 : 3.
3
36 : 3.
6
Blank : Non-discharge
D : Output Discharge
Device Package
Code
AP7342-XXXXFS6-7 FS6
AP7342D-XXXXFS6-7 FS6
0.001
0.01
0.1
1
10
100
0 50 100 150
200
ESR (Ω)
Output Current IOUT
(mA)
ESR vs. Output Current
AP7342-18
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Ceramic type output capacitor is recommended for this series; however, the other output capacitors with low ESR
(Output Current) and ESR of an output capacitor are shown
below. The stable region is
marked as the hatched area in the graph.
Frequency Band: 10Hz to 2MHz
, Temperature: −40°C to +85°C.
AP7342X XXXX FS6
–
––
–
7
Package
CH
2 Output Voltage
FS6 : X2-DFN1212-6
1
CH2
2
V 12 : 1.2V
5
V 15 : 1.5V
8
V 18 : 1.8V
5
V 25 : 2.5V
8
V 28 : 2.8V
0
V 30 : 3.0V
3
V 33 : 3.3V
6
V
Packaging
7” Tape and Reel
Quantity
X2-DFN1212-6 5,000/Tape & Reel
X2-DFN1212-6 5,000/Tape & Reel
200
250 300
(mA)
ESR vs. Output Current
-
40
°
C
85
°
C
0.001
0.01
0.1
1
10
100
0 50 100 150
ESR (Ω)
Output Current I
ESR vs. Output Current
AP7342-
33
March 2015
© Diodes Incorporated
AP7342
Ceramic type output capacitor is recommended for this series; however, the other output capacitors with low ESR
can also be used. The relations
marked as the hatched area in the graph.
7 : Tape & Reel
Packing
7” Tape and Reel
Part Number Suffix
-7
-7
200 250 300
Output Current I
OUT (mA)
ESR vs. Output Current
33
-
40
°
C
85
°
C
AP7342
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AP7342
Marking Information
(1) X2-DFN1212-6
Part Number V
OUT1
/V
OUT2
Package Identification Code
AP7342-3028FS6-7 3.0V/2.8V X2-DFN1212-6 CAA
AP7342-3328FS6-7 3.3V/2.8V X2-DFN1212-6 CAB
AP7342D-1218FS6-7 1.2V/1.8V X2-DFN1212-6 CAC
AP7342D-1528FS6-7 1.5V/2.8V X2-DFN1212-6 CAD
AP7342D-1815FS6-7 1.8V/1.5V X2-DFN1212-6 CAE
AP7342D-1818FS6-7 1.8V/1.8V X2-DFN1212-6 CAF
AP7342D-1828FS6-7 1.8V/2.8V X2-DFN1212-6 CAG
AP7342D-1833FS6-7 1.8V/3.3V X2-DFN1212-6 CAH
AP7342D-2518FS6-7 2.5V/1.8V X2-DFN1212-6 CAJ
AP7342D-2812FS6-7 2.8V/1.2V X2-DFN1212-6 CAK
AP7342D-2818FS6-7 2.8V/1.8V X2-DFN1212-6 CAM
AP7342D-2825FS6-7 2.8V/2.5V X2-DFN1212-6 CAN
AP7342D-2833FS6-7 2.8V/3.3V X2-DFN1212-6 CAP
AP7342D-3018FS6-7 3.0V/1.8V X2-DFN1212-6 CAR
AP7342D-3028FS6-7 3.0V/2.8V X2-DFN1212-6 CAS
AP7342D-3030FS6-7 3.0V/3.0V X2-DFN1212-6 CAT
AP7342D-3318FS6-7 3.3V/1.8V X2-DFN1212-6 CAU
AP7342D-3328FS6-7 3.3V/2.8V X2-DFN1212-6 CAV
AP7342D-3330FS6-7 3.3V/3.0V X2-DFN1212-6 CAW
AP7342D-3333FS6-7 3.3V/3.3V X2-DFN1212-6 CAX
AP7342D-3612FS6-7 3.6V/1.2V X2-DFN1212-6 CAY
AP7342
Document number: DS37614 Rev. 2 - 2
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AP7342
Package Outline Dimensions
(All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
X2
-
DFN1212
-
6
Dim
Min
Max
Typ
A
-
0.40 0.39
A1
0.00 0.05 0.020
A
3
- - 0.13
b
0.13 0.23 0.18
D
1.15 1.25 1.20
D2
0.89 0.99 0.94
E
1.15 1.25 1.20
E2
0.25 0.35 0.30
e
- - 0.40
k
0.15 0.25 0.20
L
0.15 0.25 0.20
z
- - 0.11
z1
- - 0.05
All Dimensions in mm
Dimensions
Value
(in mm)
C
0.400
G
0.150
X
0.250
X1
0.940
X2
1.050
Y
0.400
Y1
0.300
Y2
1.400
A
A3
Seating Plane
A1
D
E
L
b
D2
E2
e
k
Pin 1 ID C0.15
z
z1
Y2
X2
C
Y1 X1
X
Y
G
AP7342
Document number: DS37614 Rev. 2 - 2
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© Diodes Incorporated
AP7342
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
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without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
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final and determinative format released by Diodes Incorporated.
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Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
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failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
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Copyright © 2015, Diodes Incorporated
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Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Diodes Incorporated:
AP7342D-3333FS6-7 AP7342D-3030FS6-7 AP7342D-2812FS6-7 AP7342D-1828FS6-7 AP7342D-2518FS6-7
AP7342-3028FS6-7 AP7342D-2833FS6-7 AP7342D-1528FS6-7 AP7342D-2818FS6-7 AP7342D-3328FS6-7
AP7342D-1218FS6-7 AP7342D-3028FS6-7 AP7342D-2825FS6-7 AP7342D-3018FS6-7 AP7342D-1833FS6-7
AP7342D-3612FS6-7 AP7342D-3318FS6-7 AP7342D-1815FS6-7 AP7342-3328FS6-7 AP7342D-1818FS6-7
AP7342D-3330FS6-7
