參數(shù)資料
型號： MAX1737EVKIT
廠商： Maxim Integrated Products, Inc.
英文描述： MAX1737 Evaluation Kit
中文描述： MAX1737評估板
文件頁數(shù)： 13/18頁
文件大?。?/td> 234K
代理商： MAX1737EVKIT
M
Stand-Alone Switch-Mode
Lithium-Ion Battery-Charger Controller
______________________________________________________________________________________
13
Table 1. Charging State Conditions
From initial power on
or
From done state if battery voltage <
recharge voltage threshold
or
V
DCIN
- V
BATT
< 100mV or V
BATT
> bat-
tery overvoltage threshold
Timers reset, charging current = 0,
FASTCHG
= high,
FULLCHG
= high,
FAULT
= high
Reset
Fault
From prequalification state if prequalifi-
cation timer expires
or
From fast-charge state if fast-charge
timer expires
Charging current = 0,
FASTCHG
= high,
FULLCHG
= high,
FAULT
= low
Over/Under Temperature
From fast-charge state or full-charge
state if battery temperature is outside of
limits
Charge current = 0, timers suspended,
FASTCHG
= no change,
FULLCHG
= no change,
FAULT
= no change
Done
From top-off state if top-off timer expires
Recharge voltage threshold
≤
battery voltage
≤
battery
regulation voltage, charging current = 0,
FASTCHG
=
high,
FULLCHG
= high,
FAULT
= high
Top-Off
(Constant Voltage)
From full-charge state if full-charge timer
expires
or
charging current
≤
10% of
current limit
Battery voltage = battery regulation voltage, charging
current
≤
10% of current limit, timeout = 45min typ
(C
TIMER1
= 1nF),
FASTCHG
= high,
FULLCHG
= high,
FAULT
= high
Full Charge
(Constant Voltage)
From fast-charge state if battery
voltage = battery regulation voltage
Battery voltage = battery regulation voltage, charging
current
≤
current limit,
timeout = 90min typ (C
TIMER1
= 1nF),
FASTCHG
= high,
FULLCHG
= low,
FAULT
= high
ENTRY CONDITIONS
STATE CONDITIONS
Prequalification
From reset state if input power,
reference, and internal bias are within
limits
Battery voltage
≤
undervoltage threshold, charging
current = C/20, timeout = 7.5min typ (C
TIMER1
= 1nF),
FASTCHG
= low,
FULLCHG
= high,
FAULT
= high
Fast Charge
(Constant Current)
From prequalification state if battery
voltage > undervoltage threshold
Undervoltage threshold
≤
battery voltage
≤
battery regu-
lation voltage, charging current = current limit,
timeout = 90min typ (C
TIMER2
= 1nF),
FASTCHG
= low,
FULLCHG
= high,
FAULT
= high
STATE
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