SMB118 View Datasheet(PDF) - Summit Microelectronics

Part Name

Description

MFG CO.

SMB118

Six-Channel Programmable DC-DC Power Managers with Battery Charger

Summit Microelectronics

'SMB118' PDF : 37 Pages View PDF

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PLEASE NOTE: The SMB118 has entered End-of-Life.
SMB118/218
BATTERY CHARGING FLOWCHART
POR or SHDN
Release
NO
Taper Charge Mode
Regulate Voltage to
Vfloat
NO
VDD > Vbatt +
200mV ?
(Always
Monitored)
YES
Charger Standby
NO
Mode (timerrs
preserved)
T(hi)>T>T(lo)?
(Always
NO
Monitored)
YES
Vbatt<Vprechg?
YES
Reset t(precharge)
timer
Precharge Mode
Regulate Current to
Iprechg
NO
NO
Reset t(charge) timer
Vbatt<Vfloat
YES
Fast Charge Mode
Regulate Current to
Ichg
YES
Vbatt < Vprechg?
NO
YES
t(precharge)
expired?
YES
t(charge) expired?
NO
YES
Battery Fault
Terminate Charge
YES
Vbat t<Vprechg?
NO
NO
Iout < I(term)?
YES
Terminate Charge
Standby Mode
Vbatt < Vfloat -
100mV?
Figure 9 – Battery charging flowchart.
Summit Microelectronics, Inc
2107 3.0 10/15/2008
25

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