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参数资料
| 型号： | MAX8903HETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/30页 |
| 文件大小： | 0K |
| 描述： | IC DCDC CHRGR LI+ 1CELL 28TQFN |
| 标准包装： | 75 |
| 系列： | Smart Power Selector™ |
| 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： | 4.1 V ~ 16 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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MAX8903A–E/G/H/J/N/Y
2A 1-Cell Li+ DC-DC Chargers
for USB and Adapter Power
NO T READY
UOK AND DOK = HIGH IMPEDANCE
CH G = HIGH IMPEDANCE
CEN = HI OR
REMOVE AND RECONNECT
THE INPUT SOURCE(S)
ANY STATE
FLT = HIGH IMPEDANCE
I CHG = 0mA
UOK AND/OR DOK = LOW
CEN = 0
RESET TIMER
PREQUALIFICATION
UOK AND/OR DOK = LOW
CHG = LOW
FLT = HIGH IMPEDANCE
0 < V BAT < V BATPQ
I CHG ≤ I CHGMAX /10
TIMER > t PREQUAL
TOGGLE CEN OR
REMOVE AND RECONNECT
THE INPUT SOURCE(S)
FAULT
UOK AND/OR DOK = LOW
CHG = HIGH IMPEDANCE
V BAT < V BATPQ - 180mV
RESET TIMER = 0
FAST-CHARGE
V BAT > V BATPQ
RESET TIMER
FLT = LOW
I CHG = 0mA
TIMER > t FSTCHG
(TIMER SLOWED BY 2x IF
V BAT < V BATPQ - 180mV
RESET TIMER
ANY CHARGING
STATE
UOK AND/OR DOK = LOW
CHG = LOW
FLT = HIGH IMPEDANCE
V BATPQ < V BAT < V BATREG
I CHG ≤ I CHGMAX
I CHG > I TERM
RESET TIMER
TOP-OFF
I CHG < I TERM
AND V BAT = V BATREG
AND THERMAL
OR INPUT LIMIT
NOT EXCEEDED;
RESET TIMER
I CHG < I CHGMAX /2, AND
PAUSED IF I CHG < I CHGMAX /5 WHILE V BAT < V BATREG )
THM OK
THM NOT OK
UOK AND/OR DOK = LOW
TIMER RESUME
TIMER SUSPEND
CHG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
V BAT < V BATREG + V RSTRT
RESET TIMER
V BAT = V BATREG
TEMPERATURE SUSPEND
I CHG = 0mA
UOK OR DOK PREVIOUS STATE
I CHG = I TERM
TIMER > t TOP-OFF
C HG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
DONE
UOK AND/OR DOK = 0
CHG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
V BATREG + V RSTRT < V BAT < V BATREG
I CHG = 0mA
Figure 6. MAX8903A Charger State Flow Chart
t PREQUAL = 33 min ×
t FST - CHG = 660 min ×
C CT
0 . 15 μ F
C CT
0 . 15 μ F
t TOP - OFF = 15 s ( MAX 8903 A / D / H / J / N / Y )
While in fast-charge mode, a large system load or device
self-heating may cause the MAX8903_ to reduce charge
current. Under these circumstances, the fast-charge
timer is slowed by 2x if the charge current drops below
50% of the programmed fast-charge level, and suspend-
ed if the charge current drops below 20% of the pro-
t TO P - OFF = 132 min ×
20
C CT
0 . 15 μ F
( MAX 8903 B / E / G )
grammed level. The fast-charge timer is not affected at
any current if the charger is regulating the BAT voltage
at V BATREG (i.e., the charger is in voltage mode).
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8903HETI+ | 功能描述:电池管理 Dual AC/USB Powered 1-Cell 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 |
| MAX8903HETI+C58 | 功能描述:电池管理 2A 1-Cell Li+ DC-DC Charger for USB and Adapter Power 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 |
| MAX8903HETI+C64 | 功能描述:电池管理 2A 1-Cell Li+ DC-DC Charger for USB and Adapter Power 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 |
| MAX8903HETI+T | 功能描述:电池管理 Dual AC/USB Powered 1-Cell 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 |
| MAX8903HETI+TW | 功能描述:电池管理 2A 1-Cell Li+ DC-DC Charger for USB and Adapter Power 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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