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| 型号： | MAX8903JETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/30页 |
| 文件大小： | 0K |
| 描述： | IC DC/DC CHARGER LI+ 2A 28-TQFN |
| 产品培训模块： | Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
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MAX8903A–E/G/H/J/N/Y
2A 1-Cell Li+ DC-DC Chargers
for USB and Adapter Power
ABSOLUTE MAXIMUM RATINGS
DC, LX to GND .......................................................-0.3V to +20V
DCM to GND ..............................................-0.3V to (V DC + 0.3V)
DC to SYS .................................................................-6V to +20V
BST to GND ...........................................................-0.3V to +26V
BST TO LX ................................................................-0.3V to +6V
USB to GND .............................................................-0.3V to +9V
USB to SYS..................................................................-6V to +9V
VL to GND ................................................................-0.3V to +6V
THM, IDC, ISET, CT to GND........................-0.3V to (V VL + 0.3V)
DOK , FLT , CEN , UOK , CHG , USUS,
BAT, SYS, IUSB, CS to GND ................................-0.3V to +6V
SYS to BAT ...............................................................-0.3V to +6V
PG, EP (exposed pad) to GND .............................-0.3V to +0.3V
DC Continuous Current (total in two pins)......................2.4A RMS
USB Continuous Current.......................................................1.6A
LX Continuous Current (total in two pins).......................2.4A RMS
CS Continuous Current (total in two pins) ......................2.4A RMS
SYS Continuous Current (total in two pins) .......................3A RMS
BAT Continuous Current (total in two pins) .......................3A RMS
VL Short Circuit to GND .............................................Continuous
Continuous Power Dissipation (T A = +70°C)
28-Pin Thin QFN-EP
Multilayer (derate 28.6mW/°C above +70°C) ..........2286mW
28-Pin Thin QFN-EP
Single-Layer (derate 20.8mW/°C above +70°C)...1666.7mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature Range ............................-40°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V DC = V USB = 5V, V BAT = 4V, circuit of Figure 2, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
(Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DC INPUT
DC Operating Range
4.15
16
V
DC Undervoltage Threshold
When V DOK goes low, V DC
rising, 500mV typical hysteresis
No valid USB input
Valid USB input
3.9
4.0
4.0
4.3
4.1
4.4
V
DC Overvoltage Threshold
When V DOK goes high, V DC rising, 500mV typical
hysteresis
16.5
17
17.5
V
Charger enabled, no switching, V SYS = 5V
Charger enabled, f = 3MHz, V DC = 5V
2.3
15
4
DC Supply Current
Charger enabled, V CEN = 0V, 100mA USB mode (Note 2)
1
2
mA
DC High-Side Resistance
DC Low-Side Resistance
Charger enabled, V CEN = 5V, 100mA USB mode (Note 2)
V DCM = 0V, V USUS = 5V
1
0.10
0.15
0.15
2
0.25
?
?
DC-to-BAT Dropout Resistance
Assumes a 40m ? inductor resistance (R L )
0.31
?
DC-to-BAT Dropout Voltage
When SYS regulation and charging stops, V DC falling,
200mV hysteresis
0
15
30
mV
Minimum Off Time (t OFFMIN )
Minimum On Time (t ONMIN )
100
70
ns
ns
Switching Frequency (f SW )
DC Step-Down Output Current-
Limit Step Range
MAX8903A/B/C/D/E/H/J/Y
MAX8903G
V DC = 8V, V BAT = 4V
V DC = 5V, V BAT = 3V
V DC = 9V, V BAT = 4V
V DC = 9V, V BAT = 3V
0.5
4
3
1
1
2
MHz
A
DC Step-Down Output Current
Limit (I SDLIM )
V DC = 6V, V SYS = 4V
R IDC = 3k ?
R IDC = 6k ?
R IDC = 12k ?
1900
950
450
2000
1000
500
2100
1050
550
mA
2
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8903NETI+ | 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 |
| MAX8903NETI+T | 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 |
| MAX8903YETI+ | 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 |
| MAX8903YETI+C67 | 功能描述:电池管理 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 |
| MAX8903YETI+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 |
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