SMB139 View Datasheet(PDF) - Summit Microelectronics

Part Name

Description

Manufacturer

SMB139

Programmable Linear Battery Charger in 1.3 x 2.1 uCSP™

Summit Microelectronics 

SMB139

APPLICATIONS INFORMATION (CONTINUED)

POR

Standby Mode

(Pause Charge)

NO

Vin >

Vbat+130mV ?

(Always

Monitored)

YES

YES

T(hi)>T>T(lo)?

NO

(Always

Monitored)

Set I(charge-max)

Vbat>2.0V?

NO

YES

Vbat <Vprechg?

YES

Precharge Mode

Reset t(precharge)

3mA trickle charge

(timers off)

Regulate Current to

I(precharge)

(<Icharge-max)

NO

Fast Charge Mode

Reset t(charge)

NO

Vbat <Vprechg?

NO

YES

NO

YES

NO

Vbat < Vfloat?

Regulate Voltage to

Vfloat

I(charge) <

I(terrm)?

NO

YES

Regulate Current to

I(charge)

<(Icharge-max)

YES

NO

t(charge) expired?

YES

t(charge) expired?

NO

Vbat <Vprechg?

t(precharge)

expired?

YES

YES

Battery Fault

Terminate Charge

Standby Mode

NO

Terminate Charge

Standby Mode

Vbat < Vfloat-

115mV?

YES

Summit Microelectronics, Inc

2121 3.0 6/19/2008

14

Share Link: