SFT430C datasheet(5/6 Pages) SHOUDING

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SFT430C

Electrical Characteristics (Continued)

(VDD=5V, TA=25℃ and the recommended supply voltage range, unless otherwise specified.)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

D- Output Pull-Low Resistance (FCP)

(Note 4)

RPD

400

500

600

Unit Interval For FCP PHY Communication

fCLK = 125kHz

144

160

180

μs

Note 4：Not production tested.

The SFT430C

SFT430C

The SFT430C is a USB high voltage dedicated

Application Information

Function Description

charging port interface IC for Qualcomm

Quick

Charge

2.0/3.0

class

HiSilicon

FCP

specification.

The

is a USB Dedicated Charging Port

Controller can fast charge most of the handheld

devices. It can be like the original charging adapter.

can support BC1.2

, Apple, Samsung

and HUAWEI.

It also supports full output voltage range of QC 3.0

Class A(3.6V to 12V) or QC 2.0 Class A(5V,9V,12V)

SFT430C enter continuous mode. Each

0.325V and keep 1.25 seconds SFT430C

Quick Charge 2.0/3.0 Interface

Power up D+/D- is supply 2.7V to Apple Device and

then supply D+ short to D- into BC1.2. Set the

output voltage level 5V. If D+ continuous above

can

automatic choose into Quick Charge 2.0/3.0, FCP

operation mode.

When VDAT(REF)< D+ <VSEL_REF and D- > VSEL_REF , the

step D+

from 1V to 3V Pulse-width during 200us cause

current sink 2uA by FBO. The maximum output sink

current is 70uA for output voltage reach to 12V.

Each step D- from 3V to 1V Pulse-width during

200us cause current source 2uA by FBO. The

minimum output source current is 14uA for output

voltage reach to 3.6V.

If PD without QC 2.0 the device will keep output

voltage level 5V guarantee safe operation for only

5V USB PD. When USB cable unplug the D+

voltage < VDAT(REF) and output voltage recovery

default mode 5V.

SFT430C already access QC2.0/3.0 or FCP

fore SFT430C start detection. When

Shunt Regulator

The wide power supply output voltage through

external resistor from RVDD to VDD. The internal

with

Zener-Diode

clamp

VDD

6.4V.

Recommend RVDD =2.2kΩ and CVDD=470nF.

QC_EN

Function

When QC_EN pin disable QC 2.0/3.0,FCP function

by connect to GND. Otherwise, enable function by

connect to VDD or floating. QC_EN signal need to

mode,

the mode won’t be changed by setting QC_EN pin

signal (High to Low).

be ready be

SFT430C-Preliminary 0.1-Oct-2016

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