LT3650 Просмотр технического описания (PDF) - Linear Technology

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LT3650

High Voltage 2 Amp Monolithic Li-Ion Battery Charger

Linear Technology 

LT3650-4.1/LT3650-4.2

BLOCK DIAGRAM

125°C +

TDIE –

TIMER

0.2V

–+

STANDBY

UVLO +

–

OVLO

4.6V

50mV

+

–

35V

OSC

1MHz

R

LATCH

SQ

30mV

CLP

BOOST

VIN

10mΩ

8

TIMER

OSC.

RIPPLE

COUNTER

COUNT

RESET

COUNT

CHRG

RESET COUNT

ENABLE

MODE

(TIMER OR C/10)

CONTROL LOGIC

FAULT

TERMINATE

SSRESET

STATUS

C/10

PRECONDITION

NTC

+

–

–

+

VC

STANDBY

–

C-EA

+

0.3V

ITH

10 s RS

–

+

0.1V

1V

VINT

x2.25

2.7V

STANDBY

1.36V

–

50μA

+

0.29V

OFFSET

RS

RS

–

V-EA

+

SSRESET

50μA

SW

SENSE

BAT

RNG/SS

0.15V

1.2V 4.2V* 4.1V**

TERMINATE

–

+

2.9V

–

SHDN

+

1.2V

NTC

1.3V

0.7V

46μA

* VBAT(FLT): 4.2V FOR LT3650-4.2, 4.1V FOR LT3650-4.1

** VBAT(FLT) – ΔVRECHRG: 4.1V FOR LT3650-4.2, 4.0 FOR LT3650-4.1

365042 BD

36504142fb

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