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

CHARGING ALGORITHM (200mA)

SMB139 Programmable Charging Algorithm

0.4

0.35

0.3

0.25

0.2

Pre-charge

Vbat<Vprechg

Iprechg (prog)

Fast-charge

Vbat<Vfloat

Ichg (prog)

Charge

termination

Iterm (prog)

0.15

0.1

0.05

Trickle charge

Vbat<2.00V

Itrickle = 3mA

Taper-charge

Vbat=Vfloat

(prog)

0

1.60 1.80 2.00 2.15 2.60 3.00 3.32 3.59 3.82 4.01 4.14 4.19 4.20 4.20

Battery Voltage (V)

Figure 3 – Charging Algorithm (200mA))

Summit Microelectronics, Inc

2121 3.0 6/19/2008

8

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