Diodes AP7341 User Manual
AP7341
Document number: DS36523 Rev. 3 - 2
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ADVANCED I N F O R M A T I O N
AP7341
Description
The AP7341 is 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.
The AP7341 includes a voltage reference, error amplifier, current limit
circuit and an enable input to turn it on and off. With the integrated
resistor network fixed output voltage versions can be delivered.
With its low power consumption and line and load transient response
the AP7341 is well suited for low power handheld communication
equipment.
The AP7341 is packaged in an X2-DFN1010-4 package and allows
for smallest footprint and dense PCB layout.
Features
Low VIN and Wide VIN 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 3.3V
● Totally Lead-Free & and Fully RoHS Compliant (Note 1)
● Halogen and Antimony Free, Green Device (Note 2)
Pin Assignments
PIN1 – V
OUT
, PIN2 – GND, PIN3 – EN, PIN4 – VIN
Applications
Smart Phone/Pad
RF Supply
Cameras
Portable Video
Portable Media player
Wireless Adapter
Wireless Communication
AP7341
V
IN
EN
GND
V
OUT
V
IN
V
OUT
CIN
1.0uF
COUT
1.0uF
300mA HIGH PSRR LOW NOISE LDO WITH ENABLE
.
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
Figure 1 Typical Application Circuit
AP7341
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AP7341
Pin Number
X2-DFN1010-4
Function
1
VOUT
Power Output pin
2
GND
Ground
3
EN
Enable pin. This pin should be driven either high or low and must not be floating. Driving this pin
high enables the regulator, while pulling it low puts the regulator into shutdown mode
4
VIN
Power Input pin
—
Thermal Pad
In PCB layout, prefer 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.
Symbol
Parameter
Ratings
Unit
VIN
Input Voltage
6.0
V
VCE
Input Voltage EN
6.0
V
V
OUT
Output Voltage
-0.3 to VIN +0.3
V
I
OUT
Output Current
400
mA
PD
Power Dissipation
400
mW
TA
Operating Temperature
-40 to +85
°C
T
STG
Storage Temperature
-55 to +125
°C
Symbol
Parameter
Min
Max
Unit
V
IN
Input Voltage
1.7
5.25
V
I
OUT
Output Current
0
300
mA
T
A
Operating Ambient Temperature
-40
+85
°C
Pin Descriptions
Absolute Maximum Ratings (Note 4) (@T
= +25°C, unless otherwise specified.)
A
Note: 4. a). 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.
b). Ratings apply to ambient temperature at 25°C . The JEDEC High-K board design used to derive this
data was a 2 inch x 2 inch multilayer board with 1-ounce internal power and ground planes and 2-ounce
copper traces on the top and bottom of the board.
Recommended Operating Conditions (@T
= +25°C, unless otherwise specified.)
A
AP7341
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AP7341
Parameter
Conditions
Min
Typ
Max
Units
Input Voltage
TA = -40°C to +85°C
1.7 — 5.25
V
Output Voltage Accuracy (Note 11)
VIN = (V
OUT-Nom
+1.0V) to
5.25V, I
OUT
= 1mA to 150mA
TA = +25°C
-1 — 1
%
TA = -40°C to +85°C
-1.5 — +1.5
Line Regulation (dV
OUT
/dVIN/V
OUT
)
VIN = (V
OUT-Nom
+1.0V) to 5.25V, I
OUT
= 1.0mA
—
0.02
0.1
%/V
Load Regulation (dV
OUT/VOUT
)
VIN = V
OUT-Nom
+1.0V, I
OUT
= 1mA to 300mA
—
15
30
mV
Quiescent Current (Note 6)
I
OUT
= 0mA
—
35
50
uA
I
STANDBY
V
EN
= 0V (Disabled)
—
0.01
1.0
uA
Output Current
—
300 — —
mA
Fold-back Short Current (Note 7)
V
OUT
short to ground
—
55 — mA
PSRR (Note 8)
VIN = [V
OUT
+1V] VDC +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
1.2V≤ V
OUT
<1.5V
—
0.50
0.62
V
1.5V≤ V
OUT
<1.7V
—
0.38
0.47
1.7V≤ V
OUT
<2.0V
—
0.34
0.42
2.0V≤ V
OUT
<2.5V
—
0.28
0.36
2.5V≤ V
OUT
<2.8V
—
0.22
0.30
2.8V≤ V
OUT
≤3.3V
—
0.21
0.27
I
OUT
= 300mA
V
OUT
=1.8V
—
0.50
0.65
V
OUT
=2.5V
—
0.37
0.48
V
OUT
=3.3V
—
0.30
0.40
Output Voltage Temperature
Coefficient
I
OUT
= 30mA, TA = -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
= 0, VIN = 5.0V or V
EN
= 5.0V, VIN = 0V
-1.0 — +1.0
µA
On Resistance of N-Channel for
Auto-Discharge (Note 10)
VIN = 4.0V V
EN
= 0V (Disabled)
—
30 — Ω
Electrical Characteristics (@T
= +25°C, VEN = V
A
+1.0V, CIN = C
OUT
= 1.0µF, I
OUT
= 1.0mA, unless otherwise specified.)
OUT
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
8. This specification is guaranteed by design.
9. To make sure lowest environment noise minimizes the influence on noise measurement.
10. AP7341 has 2 options for output, Built-in discharge and non-discharge
11. Potential multiple grades based on following output voltage accuracy.
pulled to GND.
OUT
AP7341
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ADVANCED I N F O R M A T I O N
AP7341
Output Noise (AP7341-33)
0.0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
0 100 200 300 400 500
Output Voltage V OUT (V)
Output Current I OUT (mA)
Output Voltage vs. Output Current
AP7341-18
VIN=2.8
V
VIN=3.6
V
VIN=4.2
V
VIN=5V
VIN=5.5
V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 100 200 300 400 500
Output Voltage V OUT (V)
Output Current I OUT (mA)
Output Voltage vs. Output Current
AP7341-25
VIN=3.5V
VIN=4.2V
VIN=5V
VIN=5.5V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0 100 200 300 400 500
Output Voltage V OUT (V)
Output Current I OUT (mA)
Output Voltage vs. Output Current
AP7341-33
VIN=4.3V
VIN=5V
VIN=5.5V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0 1 2 3 4 5
Output Voltage V OUT (V)
Input Voltage V IN (V)
Output Voltage vs. Intput Voltage
AP7341-25
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0 1 2 3 4 5
Output Voltage V OUT (V)
Input Voltage V IN (V)
Output Voltage vs. Intput Voltage
AP7341-33
I
OUT
=1mA
I
OUT
=30m
A
I
OUT
=50m
A
Typical Characteristics
AP7341
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ADVANCED I N F O R M A T I O N
AP7341
0
10
20
30
40
50
0 1 2 3 4 5
Supply Current I SS (μA)
Input Voltage V IN (V)
Supply Current vs. Input Voltage
AP7341-25
0
10
20
30
40
50
0 1 2 3 4 5
Supply Current I SS (μA)
Input Voltage V IN (V)
Supply Current vs. Input Voltage
AP7341-33
30
32
34
36
38
40
-50 -25 0 25 50 75 100
Supply Current I ss (µA)
Temperature Topt (℃)
Supply Current vs. Temperature
AP7340-25
30
32
34
36
38
40
-50 -25 0 25 50 75 100
Supply Current I ss (µA)
Temperature Topt (℃)
Supply Current vs. Temperature
AP7341-33
2.45
2.46
2.47
2.48
2.49
2.50
2.51
2.52
2.53
2.54
2.55
-50 -25 0 25 50 75 100
Output Voltage V OUT (V)
Temperature Topt (℃)
Output Voltage vs. Temperature
AP7341-25
3.25
3.26
3.27
3.28
3.29
3.30
3.31
3.32
3.33
3.34
3.35
-50 -25 0 25 50 75 100
Output Voltage V OUT (V)
Temperature Topt (℃)
Output Voltage vs. Temperature
AP7341-33
Typical Characteristics (cont.)
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