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| 型号： | MAX1737EEI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/18页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR BAT CHARGE 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 28-QSOP |
| 包装： | 带卷 (TR) |
MAX1737
Stand-Alone Switch-Mode
Lithium-Ion Battery-Charger Controller
Table 1. Charging State Conditions
STATE
Reset
Prequalification
Fast Charge
(Constant Current)
Full Charge
(Constant Voltage)
Top-Off
(Constant Voltage)
Done
Over/Under Temperature
Fault
Maxim Integrated
ENTRY 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
From reset state if input power,
reference, and internal bias are within
limits
From prequalification state if battery
voltage > undervoltage threshold
From fast-charge state if battery
voltage = battery regulation voltage
From full-charge state if full-charge timer
expires or charging current ≤ 10% of
current limit
From top-off state if top-off timer expires
From fast-charge state or full-charge
state if battery temperature is outside of
limits
From prequalification state if prequalifi-
cation timer expires
or
From fast-charge state if fast-charge
timer expires
STATE CONDITIONS
Timers reset, charging current = 0,
FASTCHG = high, FULLCHG = high,
FAULT = high
Battery voltage ≤ undervoltage threshold, charging
current = C/20, timeout = 7.5min typ (C TIMER1 = 1nF),
FASTCHG = low, FULLCHG = high, FAULT = high
Undervoltage threshold ≤ battery voltage ≤ battery regu-
lation voltage, charging current = current limit,
timeout = 90min typ (C TIMER2 = 1nF),
FASTCHG = low, FULLCHG = high, FAULT = high
Battery voltage = battery regulation voltage, charging
current ≤ current limit,
timeout = 90min typ (C TIMER1 = 1nF),
FASTCHG = high, FULLCHG = low, FAULT = high
Battery voltage = battery regulation voltage, charging
current ≤ 10% of current limit, timeout = 45min typ
(C TIMER1 = 1nF), FASTCHG = high, FULLCHG = high,
FAULT = high
Recharge voltage threshold ≤ battery voltage ≤ battery
regulation voltage, charging current = 0, FASTCHG =
high, FULLCHG = high, FAULT = high
Charge current = 0, timers suspended,
FASTCHG = no change, FULLCHG = no change,
FAULT = no change
Charging current = 0,
FASTCHG = high, FULLCHG = high,
FAULT = low
13
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