SC8723 PRELIMINARY SPEC

SOUTHCHIP SEMICONDUCTOR

SOUTHCHIP CONFIDENTIAL, SUBJECT TO CHANGE

Copyright © 2021, Southchip Semiconductor Technology (Shanghai) Co., Ltd.

3

6

Terminal Configuration and Functions

Top View

VIN

PGND

PGND

PGND

VOUT

VOUT

VIN

1

3

4

14 PGND

2

5

12

15

16

EN

MODE

13

TERMINAL

I/O

DESCRIPTION

NUMBER

NAME

1,2

VIN

PWR

The power input node of the converter.

3,4,13,14

PGND

PWR

Power ground. User shall connect PGND and AGND together on PCB.

5

EN

I

Enable logic input. Logic high level enables the device and logic low level disables the device.

6

ILIM

I

Connect a resistor to set the current limit value of output current.

7

COMP

I

Connect a RC network to compensate the control loop.

8

AGND

I/O

Analog ground. User shall connect PGND and AGND together on PCB.

9

FB

I

Feedback node of VOUT output voltage. Set the VOUT output voltage by the resistor divider

connected at this pin. Output voltage be configured for fixed 5.1V with FB pin connected to GND.

10

FREQ

I

Set typical switching frequency of the device.

FREQ pin ties to AGND: 250kHz (RFREQ <20KΩ)

FREQ pin keeps floating: 500kHz (RFREQ >700KΩ)

50 KΩ < R

FREQ < 80KΩ: 750kHz

180

KΩ < R

FREQ < 320KΩ: 1MHZ

The FREQ pin status is re-loaded when VIN power cycle or EN from low to high.

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