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| 型号： | MAX8922LETB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/15页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER SGL 10TDFN |
| 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： | 0 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN EP（3x2） |
| 包装： | 带卷 (TR) |
30V Li+ Linear Battery Charger
with GSM Test Mode in 3mm x 2mm TDFN
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 5V, V BAT = 4V, V EN /SET = 0V, T A = -40°C to +85°C, typical values are at T A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LDO
Minimum LDO Bypass
Capacitance
1
μF
LDO Regulated Output Voltage
LDO Output-Current Limit
I LDO = 10mA, V IN = 5V
4.8
4.94
100
V
mA
EN /SET
Logic Input Thresholds
Program Lock Time
Shutdown Delay
t LOW
t HIGH
Pulldown Resistor
Rising
Falling
V IN = 5V, EN/ SET from low to high
(Note 4)
(Note 4)
0.4
4
4
100
100
2
1.4
1400
1400
V
ms
ms
μs
M ?
POK , CHG
Logic Output Voltage, Low
I POK , = I CHG = 5mA
0.05
0.2
V
Logic Output Current, High
V POK = V CHG = 5.5V, V IN = 0V
T A = +25°C
T A = +85°C
0.001
0.01
1
μA
CHG
Default top-off threshold, hysteresis
(typ) = 80mA
60
80
100
Top-Off Threshold
I BAT falling,
battery is
charged
EN /SET = one pulse, R MIN =
1.875k ? , hysteresis (typ) = 130mA
60
80
100
mA
EN /SET = two pulses, hysteresis
(typ) = 22mA
50
60
70
Detection Delay
I BAT falls below top-off threshold
2
4
6
ms
THERMAL LOOP
Thermal-Limit Temperature
Thermal-Limit Gain
Junction temperature when the charge current is
reduced, T J rising
Reduction of I BAT for increase of T J , default mode
+105
-28
°C
mA/°C
Note 1: Limits are 100% production tested at T A = +25°C. Limits over the operating temperature range are guaranteed by design
and characterization.
Note 2: Guaranteed by undervoltage- and overvoltage-threshold testing. If V BAT = 4.2V, V IN needs to be > 4.2V + 250mV (typ) to
start normal operation. After the MAX8922L turns on, it can operate until V BAT + 100mV (typ). For complete charging, the
input voltage must be > 4.45V. See the Input Sources section.
Note 3: Used for factory GSM RF calibration. 217Hz, 12.5% current pulse, T A = +25°C. Not for continuous charge current.
Note 4: Not tested. Design guidance only.
_______________________________________________________________________________________
3
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