SMB118 SUMMIT Microelectronics, Inc:, SMB118 Datasheet - Page 25

• Manufacturer Part Number: SMB118
• Description: Six-channel Programmable Dc-dc Power Managers With Battery Charger
• Manufacturer: SUMMIT Microelectronics, Inc:

Summit Microelectronics, Inc
BATTERY CHARGING FLOWCHART
Figure 9 – Battery charging flowchart.
YES
Taper Charge Mode
Regulate Voltage to
Vfloat
NO
NO
Reset t(charge) timer
Regulate Current to
Fast Charge Mode
t(charge) expired?
POR or SHDN
Vbat t<Vprechg?
Vbatt<Vprechg?
VDD > Vbatt +
T(hi)>T>T(lo)?
Iout < I(term)?
Vbatt<Vfloat
Monitored)
Monitored)
Release
200mV ?
(Always
(Always
YES
YES
YES
Ichg
NO
NO
NO
2107 2.4 5/5/2008
YES
YES
NO
NO
Reset t(precharge)
Terminate Charge
Charger Standby
Standby Mode
Mode (timerrs
preserved)
NO
timer
YES
YES
NO
NO
Vbatt < Vfloat -
100mV?
Regulate Current to
Terminate Charge
Vbatt < Vprechg?
Precharge Mode
Battery Fault
t(precharge)
expired?
Iprechg
YES
YES
Preliminary Specification
SMB118/218
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