Document
ADVANCED INFORMATION
AP7341
300mA HIGH PSRR LOW NOISE LDO WITH ENABLE
Description
The AP7341 is a low dropout regulator with high output voltage accuracy, low RDSON, 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.
Pin Assignments
PIN1 – VOUT, PIN2 – GND, PIN3 – EN, PIN4 – VIN
Features
Applications
Low VIN and Wide VIN Range: 1.7V to 5.25V Guarantee Output Current,150mA VOUT Accuracy ±1% Ripple Rejection 75dB at 1kHz Low Output Noise, 60µVrms from 10Hz to 100kHz Quiescent Current as Low as 35µA VOUT Fixed 1.1V to 3.3V ● Totally Lead-Free & and Fully RoHS Compliant (Note 1) ● Halogen and Antimony Free, Green Device (Note 2)
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
VIN
CIN 1.0uF
VIN VOUT AP7341
EN GND
VOUT
COUT 1.0uF
AP7341
Document number: DS36523 Rev. 4 - 2
Figure 1 Typical Application Circuit
1 of 14 www.diodes.com
July 2014
© Diodes Incorporated
ADVANCED INFORMATION
AP7341
Pin Descriptions
Pin Number 1 2 3 4
—
X2-DFN1010-4 VOUT GND EN VIN
Thermal Pad
Function
Power Output pin Ground 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 Power Input pin 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.
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
Ratings
Unit
VIN Input Voltage
6.0 V
VCE Input Voltage EN
6.0 V
VOUT
Output Voltage
-0.3 to VIN +0.3
V
IOUT Output Current
400 mA
PD Power Dissipation
400 mW
TA Operating Temperature
-40 to +85
°C
TSTG
Storage Temperature
-55 to +125
°C
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 1ounce internal power and ground planes and 2-ounce copper traces on the top and bottom of the board.
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Symbol VIN IOUT TA
Parameter Input Voltage Output Current Operating Ambient Temperature
Min 1.7 0 -40
Max 5.25 300 +85
Unit V mA °C
AP7341
Document number: DS36523 Rev. 4 - 2
2 of 14 www.diodes.com
July 2014
© Diodes Incorporated
ADVANCED INFORMATION
AP7341
Electrical Characteristics (@TA = +25°C, VEN = VOUT +1.0V, CIN = COUT = 1.0µF, IOUT = 1.0mA, unless otherwise specified.)
Parameter Input Voltage
Output Voltage Accuracy (Note 11)
Conditions
TA = -40°C to +85°C
VIN = (VOUT-Nom+1.0V) to 5.25V, IOUT = 1mA to 150mA
TA = +25°C TA = -40°C to +85°C
Min Typ Max Units
1.7 — 5.25 V
-1 —
1
-1.5 — +1.5 %
Line Regulation (dVOUT/dVIN/VOUT) VIN = (VOUT-Nom+1.0V) to 5.25V, IOUT = 1.0mA
— 0.02 0.1
Load Regulation (dVOUT/VOUT) Quiescent Current (Note 6) ISTANDBY Output Current Fold-back Short Current (Note 7)
PSRR (Note 8)
Output Noise Voltage (Notes 8 & 9)
Dropout Voltage (Note 5)
Output Voltage Temperature Coefficient EN Input Low Voltage EN Input High Voltage EN Input Leakage On Resistance of N-Channel for Auto-Discharge (Note 10)
VIN = VOUT-Nom+1.0V, IOUT = 1mA to 300mA
IOUT = 0mA
VEN = 0V (Disabled) —
VOUT short to ground
VIN = [VOUT +1V] VDC +0.2Vp-pAC, VOUT ≥ 1.8V,
IOUT = 30mA
f = 1kHz
BW = 10Hz to 100kHz, IOUT = 30mA IOUT = 150mA
1.1V ≤ VOUT < 1.5V 1.5V ≤ VOUT < 1.7V 1.7V ≤ VOUT < 2.0V 2.0V ≤ VOUT < 2.5V 2.5V ≤ VOUT < 2.8V 2.8V ≤ VOUT ≤ 3.3V
VOUT = 1.8V
IOUT = 300mA
VOUT = 2.5V
VOUT = 3.3V
IOUT = 30mA, TA = -40°C to +85°C
— — VEN = 0, VI.