SC805EVB datasheet(13/15 Pages) SEMTECH

부품명	SC805EVB

상세설명	Miniature Integrated High Current Lithium-Ion Battery Charger

PDF	15 Pages

Scroll/Zoom	100%

제조업체	SEMTECH [Semtech Corporation]

홈페이지	http://www.semtech.com

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13 / 15 page

 2005 Semtech Corp.

www.semtech.com

SC805

POWER MANAGEMENT

State Diagram

Shutdown Mode

Vout/Iout off

CHRGB High Z

Soft Start CC Mode

Start Pre-Charge

OVP> Vin > UVLO

Iout=1500/Rprog

Iout=150/Rterm

Under Voltage will force the

SC805 into Shutdown Mode

from any state.

Over Voltage will disable

the output, suspend the

timer, and blink CHRGB

Monitor Mode

Vout=off

Float Charge Mode

Vout = CV

Yes

Soft Start Vout

Yes

En=Hi

Timer

Enabled?

Start Timer

Vout>2.8V

Time>Tmax/4

Iout<Iterm

Vout=CV

Start CV Mode

CHRGB Low

CHRGB High

Timer

Enabled?

Time>Tmax

Vout< CV-100mV

Pre-Charge

Timeout Fault

CHRGB blinks at 1Hz

Cleared by

Vbat>2.8V or

Re-cycle EN or VCC

NTC out of Range Fault

CHRGB blinks at 1Hz

Timer is frozen

Charge resumes when NTC

Temperature is valid

0oC > NTC Temp >50oC

CC=Constant Current

CV=Constant Voltage

Yes

Time=0

Iout<Iterm

CHRGB High

Yes

Time>Tmax

Yes

SC805EVB 데이터시트(PDF) 13 Page - Semtech Corporation

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