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参数资料
| 型号： | MAX8971EWP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/39页 |
| 文件大小： | 0K |
| 描述： | IC DCDC CHRGR LI+ 1CELL 20WLP |
| 标准包装： | 2,500 |
| 功能： | 充电管理，过压/欠压保护 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4 V ~ 7.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
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MAX8971
Industry's Smallest 1.55A
1-Cell Li+ DC-DC Charger
ELECTRICAL CHARACTERISTICS (continued)
(V DC = 5V, C BYP = 1 F F, I FCHG = 500mA, C AVL = 4.7 F F, V THM = AVL/2, T A = -40 N C to +85 N C, unless otherwise noted. Typical values
are at T A = +25 N C.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CONSTANT VOLTAGE MODE
T A = +25 N C
-0.5
+0.5
Battery Regulation Voltage
(V BATREG )
I BAT = 100mA, operating in
voltage-regulation mode, I 2 C-
programmable 4.1V, 4.15V,
4.2V, and 4.35V selection
T A = -40 N C to +85 N C
JEITA safety region,
percentage of battery
regulation voltage
-1
96
97
+1
98
%
(Note 6)
Battery Refresh Threshold
Battery Overvoltage Protection
(Below regulation point), 100mV and 150mV selection,
default 150mV (Note 5)
V BAT threshold over regulation voltage to turn off
charger during charge (% of regulation voltage)
(Note 7)
120
102
150
103.5
185
105
mV
%
Hysteresis (V BAT falling) at 4.2V
1.4
Charge-Current Termination
Threshold (I TOPOFF )
Charge-Current Termination
Accuracy
Programmable topoff current independent of JEITA
functionality, default 50mA, 200mA hysteresis
Deglitch time
I TOPOFF = 200mA
50
-20
16
200
+20
mA
ms
%
GSM TEST MODE
GSM Test-Mode Output Pulse
Current
GSM Test-Mode Minimum Output
V BAT capacitance ≥ 60 F F, peak current pulse
frequency = 217Hz, on-duty cycle 12.5%
V BAT capacitance ≥ 60 F F, current pulse
frequency = 217Hz, on-duty cycle 12.5%
3.7
2.3
A
V
(Note 3)
CHARGER TIMER
Prequalification Time (t PQ )
Fast-Charge Time (t FC )
Timer Accuracy
V BAT < V BATPQ_UT
Default 5 hours, I 2 C programmable (4–10 hours and
disabled selection)
45
5
20
Mins
hrs
%
Top-Off Time (t TOPOFF )
Top-Off Timer Accuracy
Timer-Extend Current Threshold
(Note 3)
I 2 C programmable 0 to 70 mintues, 10-minute steps,
default 30 mintues
Percentage of fast-charge current below which the
timer clock operates at half speed
0
20
50
70
Mins
%
%
Maxim Integrated
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8971QEWP+T | 功能描述:电池管理 Switch-Mode Li+ Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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| MAX8973AEWI+T | 制造商:Maxim Integrated Products 功能描述:HIGH CURRENT, MULTI-PHASE DC/DC STEP-DOWN CONVERTER - Tape and Reel |
| MAX8982AEWO+T | 制造商:Maxim Integrated Products 功能描述:POWER MANAGEMENT IC FOR ICERA E400/E450 PLATFORM-MINI CARD - Tape and Reel |
| MAX8982EWO+T | 功能描述:PMIC 解决方案 PMIC for ICERA E400/E450 Platform RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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