SMB135E View Datasheet(PDF) - Summit Microelectronics

Part Name

Description

Manufacturer

SMB135E

Programmable Switch-mode, USB/AC Input Li+ Battery Charger with TurboCharge™ Mode*

Summit Microelectronics 

SMB135

CHARGING ALGORITHM (500mA)

Charge Algorithm (CC-CV) vs. Time

4.50

1

Battery Voltage

4.00

Charge Current

Input current

Float Voltage

Vfloat (prog)

3.50

0.1

Trickle charge

3.00

Vbat<2.00V

Itrickle = 10mA

Fast-charge

Vbat<Vfloat

Ichg (prog)

Taper-charge

Vbat=Vfloat

2.50

Pre-charge

Vbat<Vprechg

Iprechg (prog)

Pre-charge to

2.00

fast-charge

transition (prog)

Trickle to pre-charge

transition (fixed 2.00V)

1.50

Time

Charge

termination

(prog) 0.01

0.001

Figure 3 – Typical SMB135 Charging Algorithm)

Summit Microelectronics, Inc

2106 3.1 11/4/2008

9

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