DS2715 Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS2715

NiMH Battery Pack Charge Controller

Dallas Semiconductor -> Maxim Integrated 

Figure 1. BLOCK DIAGRAM

DS2715: NiMH Cell Pack Charge Controller

DS2715

Cbias

VDD

HV

Div

Regulator

Pwr

R

E

F

VUVLO

Disable during

discharge

UVLO

State Machine

Oscillator

Pre-Charge

Low Cells

LED1 HV

LED2

HV

Fast Charge

Exit on Full

Or Timeout

Pwr

Rt start-up test

Rt

Rt

Charge

Timer

25% Top-Off Charge

(Set by Timer)

Done, Waiting for event

to start charging

M

Vbatt

U

Th

Ref

X

THM

A

D

C

Mode

Ref

Vsns

Ref

121mV,

33mV,

10mV

Disch. Detect

@-0.01V

+ Ref

- SNS+

AMP

R

or

Comp -

+

-

+

SNS+

SNS-

Vch

RS Latch

Latch is set until

Vsns negative WRT Vss

VSS

VSS

5 of 12

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