参数资料
型号: MAX8903YETI+T
厂商: Maxim Integrated Products
文件页数: 9/30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)
MAX8903A–E/G/H/J/N/Y
2A 1-Cell Li+ DC-DC Chargers
for USB and Adapter Power
Typical Operating Characteristics (continued)
(T A = +25°C, unless otherwise noted.)
MAX8903A/B/C/G/H
CHARGE PROFILE—1400mAh BATTERY
USB INPUT—500mA CHARGE
MAX 8 903A/B/C/D/E/H/J/N/Y DC SWITCHING
WAVEFORMS—LIGHT LOAD
5.0
MAX8903A toc18
0.50
MAX8903A toc19
4.5
4.0
3.5
0.45
0.40
0.35
V OUT
20mV/div
AC-COUPLED
3.0
2.5
V BAT
I BAT
0.30
0.25
V LX
5V/div
0V
2.0
1.5
0.20
0.15
1.0
0.5
0
MAX8903A/MAX8903B/MAX8903C
I USB SET TO 500mA
I BAT SET TO 2A
0.10
0.05
0
I LX
R SYS = 44?
500mA/div
0A
0
20 40 60 80 100 120 140 160 180 200
TIME (min)
MAX8903G DC SWITCHING
WAVEFORMS—LIGHT LOAD
MAX8903A toc19a
200ns/div
MAX8903A/B/C/D/E/H/J/N/Y DC SWITCHING
WAVEFORMS—HEAVY LOAD
MAX8903A toc20
20mV/div
V SYS
V DC = 9V, L = 2.2μH
50mV/div
AC-COUPLED
V OUT
AC-COUPLED
C SYS = 22μF,
R SYS = 44 I
5V/div
V LX
10V/div
V LX
0V
0V
1A/div
I LX
0A
I LX
500mA/div
R SYS = 5?
0A
1μs/div
MAX8903G DC SWITCHING
WAVEFORMS—HEAVY LOAD
MAX8903A toc20a
200ns/div
DC CONNECT WITH
USB CONNECTED (R SYS = 25 ? )
MAX8903A toc21
V SYS
V DC = 9V, L = 2.2μH
C SYS = 22μF, R SYS = 5 I
50mV/div
AC-COUPLED
V SYS
I DC
3.6V
347mA
2V/div
500mA/div
CEN = 1
V LX
10V/div
0V
I USB
475mA
500mA/div
-I BAT = CHARGING
I LX
1A/div
I BAT
-335mA
0A
500mA/div
0A
Maxim Integrated
1μs/div
200 μ s/div
9
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