Skip to the content
12345

AP7331-WG

Diodes IncorporatedExtended

-40℃~+85℃@(Ta) 1 300mA 300mV@(300mA) 55uA 65dB@(100Hz) 6V 800mV~5V Adjustable Over Current Protection、Short Circuit Protection、Thermal Shutdown Positive SOT-25 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

DatasheetJLCPCBLCSC
Part id
diodes/AP7331-WG
Category
Voltage Regulators, Linear, Low Drop Out (LDO) Regulators
Package
SOT-25
Pins
5
In stock
818 at JLCPCB (C212322)
Used on
4 open-source boards

Overview

The AP7331-WG is a voltage Regulators, Linear, Low Drop Out (LDO) Regulator made by Diodes Incorporated in a SOT-25 package with 5 pins. -40℃~+85℃@(Ta) 1 300mA 300mV@(300mA) 55uA 65dB@(100Hz) 6V 800mV~5V Adjustable Over Current Protection、Short Circuit Protection、Thermal Shutdown Positive SOT-25 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:APL5155BI-TRG, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-23-5, from KiCad's library), ready for a KiCad board. 818 are in stock at JLCPCB (part C212322). 4 open-source boards in 3 repositories on GitHub use it.

Symbol

5OUT4NC/ADJ3EN2GND1IN
EasyEDA_Cloud:APL5155BI-TRGFrom EasyEDA

Footprint

12345
Package_TO_SOT_SMD:SOT-23-5From KiCad's library

From the datasheet

13
Supply, least
2 V · IN, recommended operating minimum · p. 3
Supply, most
6 V · IN, recommended operating maximum · p. 3
Supply, absolute maximum
7 V · IN, absolute maximum · p. 3
Works from
-40 °C · Operating ambient minimum · p. 3
Works up to
85 °C · Operating ambient maximum · p. 3
Junction, hottest
150 °C · Junction absolute maximum · p. 3
Takes working
65 µA · Input quiescent current typical, VEN = VIN, IOUT = 300mA · p. 4
Takes asleep
1 µA · Input shutdown current max, VEN = 0V, IOUT = 0mA · p. 4
Gives
300 mA · Continuous output current maximum · p. 3
Current limit
600 mA · Current limit typical, VOUT/ROUT = 1A · p. 4
Feedback reference
400 mV · ADJ reference voltage typical, IOUT = 0mA · p. 4
Dropout
300 mV · Dropout typical at 300mA, output voltages above 1.8V · p. 4
Junction to air (SOT25)
190 K/W · Junction-to-ambient thermal resistance typical, Note 5 · p. 4

What it is and has

7
Output current
300mA, with enable · p. 1
Adjustable output
0.8V to 5.0V · p. 1
PSRR
65dB typical at 100Hz · p. 1
Start-up time
80µs · p. 1
Protection
Current limit · p. 1
Protection
Short circuit · p. 1
Protection
Thermal shutdown · p. 1

Around it

3
cap 1µF
between IN and GND; At least 1uF input bypass capacitor. · p. 2
cap 1µF
between OUT and GND; Ceramic output bypass capacitor. · p. 2
res <125kΩ
between ADJ and GND; R2, the lower feedback divider resistor; keep below 125kΩ for internal reference stability. · p. 8

Specifications

30
ParameterConditionsAs printedPage
Human Body Model ESD Protection ESD HBMmax 6 kV3
Machine Model ESD Protection ESD MMmax 400 V3
Input Voltage VINmax 7 V3
Operating Junction Temperature Range TOPmin -40 · max 125 °C3
Storage Temperature Range TSTmin -65 · max 150 °C3
Power Dissipation (Note 2) PDSOT25; ambient temperature 25°Cmax 640 mW3
Maximum Junction Temperature TJmax 150 °C3
Input voltage VINmin 2 · max 6 V3
Output Current (Note 3) IOUTmin 0 · max 300 mA3
Operating Ambient Temperature TAmin -40 · max 85 °C3
Input Quiescent Current IQVEN = VIN, IOUT = 0mAtyp 55 · max 75 uA4
Input Quiescent Current IQVEN = VIN, IOUT = 300mAtyp 65 · max 85 uA4
Input Shutdown Current ISHDNVEN = 0V, IOUT = 0mAmax 1 uA4
Input Leakage Current ILEAKVEN = 0V, OUT groundedmax 1 uA4
Dropout Voltage (Note 4) VDropoutIOUT = 300mA; applies only to output voltages above 1.8Vtyp 300 · max 550 mV4
ADJ Reference Voltage (Adjustable version) VREFIOUT= 0mAtyp 0.4 V4
ADJ Leakage (Adjustable version) IADJmax 1 uA4
Output Voltage Accuracy VOUTTA = -40oC to 85oC, IOUT = 30mAmin -2 · max 2 %4
Line Regulation ΔVOUT/ΔVIN/VVIN = (VOUT +1V) to VIN-Max, VEN = VIN, IOUT = 1mAtyp 0.01 · max 0.2 %/V4
Load Regulation ΔVOUT/VOUTVIN = (VOUT +1V) to VIN-Max, IOUT from 1mA to 300mAmin -0.6 · max 0.6 %4
Start-up Time tSTVEN = 0V to 2.0V, VOUT = 1V, IOUT = 300mAtyp 80 us4
PSRR PSRRVIN = [VOUT +1V]VDC + 0.5VppAC, f = 100Hz, IOUT =30mAtyp 65 dB4
Short-circuit Current ISHORTVIN = VIN-Min to VIN-Max, VOUT < 0.2Vtyp 100 mA4
Current Limit ILIMITVOUT/ROUT = 1Amin 400 · typ 600 mA4
EN Input Logic Low Voltage VILVIN = VIN-Min to VIN-Maxmax 0.4 V4
EN Input Logic High Voltage VIHVIN = VIN-Min to VIN-Maxmin 1.4 V4
EN Input Current IENVIN = 0V or VIN-Maxmin -1 · max 1 uA4
Thermal Shutdown Threshold TSHDNtyp 140 °C4
Thermal Shutdown Hysteresis THYStyp 15 °C4
Thermal Resistance Junction-to-Ambient θJASOT25 (Note 5); FR-4 substrate PCB, minimum recommended pad layout, 2oz copper, single sidedtyp 190 °C/W4

Pins, by the datasheet

5
1 IN
Voltage input; bypass to ground through at least 1uF capacitor. · p. 2
2 GND
Ground. · p. 2
3 EN
Enable input, active high. · p. 2
4 ADJ
Output feedback pin. · p. 2
5 OUT
Voltage output; bypass to ground through 1uF ceramic capacitor. · p. 2

Open-source boards using it

4
  • 4 layers50.8 × 50.8 mmMini fpga, the printed circuit board in 3D

    Mini fpga

    emusan/FPGA_HDMI-pcb

    PCB layout for my cheap FPGA HDMI experimenting board

    130 parts10
  • 2 layers95.9 × 90.2 mmDemoboard v2, the printed circuit board in 3D

    Demoboard v2

    SFUSatClub/obc-hardware

    PCB design for the initial prototype of OBC hardware, to interface with LaunchPad.

    129 parts10
  • 4 layers53.2 × 138.8 mmSndLocket, the printed circuit board in 3D

    SndLocket

    Kreyl/LocketSound

    226 parts
  • 2 layers68 × 100 mmDemoBoard v1, the printed circuit board in 3D

    DemoBoard v1

    SFUSatClub/obc-hardware

    PCB design for the initial prototype of OBC hardware, to interface with LaunchPad.

    56 parts10

Parts like it

8

Questions

Is there a KiCad symbol and footprint for the AP7331-WG?

Yes. The symbol is EasyEDA_Cloud:APL5155BI-TRG and the footprint Package_TO_SOT_SMD:SOT-23-5, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the AP7331-WG?

SOT-25, with 5 pins. Its footprint is drawn on this page.

Where is the AP7331-WG datasheet?

Diodes Incorporated publishes it: the Datasheet link on this page opens it.

Where can I order the AP7331-WG?

JLCPCB lists it as part C212322, with 818 in stock; the sellers' links on this page open their listings.

What can replace the AP7331-WG?

Parts like it in the library: the ME6211C33M5G-N by MICRONE, the SPX3819M5-L-3-3/TR by MaxLinear, the RT9013-33GB by RICHTEK and the XC6219B332MR by UMW. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the AP7331-WG?

4 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.