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| 型号： | MAX1757EAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/17页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHRG LI+ 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 6 V ~ 14 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
MAX1757
Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 14V Switch
Table 1. Charging State Table
Reset
STATE
ENTRY CONDITIONS
From initial power on
or
From done state if battery voltage < recharge voltage
threshold
or
V DCIN - V BATT < dropout threshold
STATE CONDITIONS
Timers reset, charging current = 0,
FASTCHG = high, FULLCHG = high,
FAULT = high
or
V BATT > battery overvoltage threshold
Battery voltage ≤ undervoltage threshold,
Prequalification
Fast Charge
(Constant Current)
Full Charge
(Constant Voltage)
Top-Off
(Constant Voltage)
Done
Over/Undertemperature
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
If charging current ≤ 330mA
From top-off state if top-off timer expires
From fast-charge state or full-charge state if battery
temperature is outside limits
charging current = (fast-charge current / 10),
timeout = 7.5min typ (C TIMER1 = 1nF),
FASTCHG = low, FULLCHG = high,
FAULT = high
Undervoltage threshold ≤ battery voltage
≤ battery regulation voltage,
charging current = charge current limit,
timeout = 90min typ (C TIMER2 = 1nF),
FASTCHG = low, FULLCHG = high,
FAULT = high
Battery voltage = battery regulation
voltage,
charging current ≤ 330mA,
timeout = 90min typ (C TIMER1 = 1nF),
FASTCHG = high, FULLCHG = low,
FAULT = high
Battery voltage = battery regulation voltage,
charging current ≤ 330mA
timeout = 45min typ
(C TIMER1 = 1nF), FASTCHG = high,
FULLCHG = high, FAULT = high
Recharge voltage threshold ≤ battery,
voltage ≤ voltage limit, charging current = 0,
FASTCHG = high, FULLCHG = high,
FAULT = high
Charge current = 0, timers suspended,
FASTCHG = no change,
FULLCHG = no change,
FAULT = no change
From reset state if battery temperature ≥ maximum
battery temperature
Fault
10
or Charging current = 0, FASTCHG = high,
From prequalification state if prequalification timer expires FULLCHG = high, FAULT = low
or
From fast-charge state if fast-charge timer expires
Maxim Integrated
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