参数资料
型号: MAX8677CETG+T
厂商: Maxim Integrated Products
文件页数: 8/21页
文件大小: 0K
描述: IC USB/AC ADP CHARGER 24-TQFN
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)、锂聚合物(Li-Pol)
电源电压: 4.1 V ~ 6.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-TQFN-EP(4x4)
包装: 带卷 (TR)
1.5A Dual-Input USB/AC Adapter Charger
and Smart Power Selector
Typical Operating Characteristics (continued)
(T A = +25°C, unless otherwise noted.)
USB DISCONNECT WITH NO DC
(R SYS = 20 Ω )
MAX8677C toc24
USB SUSPEND
MAX8677C toc25
V USB
5V
10V/div
V USUS
0V
3V
5V/div
I USB
V SYS
475mA
3.7V
0A
3.6V
500mA/div
I USB
V SYS
500mA
3.7V
0A
3 .6 V
500mA/div
V UOK
V CHG
I BAT
0V
-300mA
0V
120mA
3V
3V
5V/div
5V/div
1A/div
V CHG
I BAT
0V
-500mA
3V
0A
5V/div
500mA/div
200 μ s/div
USB RESUME
MAX8677C toc26
200 μ s/div
V USUS
3V
0V
5V/div
C USB CHARGING
I USB
0A
500mA
500mA/div
V SYS
V CHG
3.6V
3V
4 .35V
0V
3.7V
5V/div
I BAT
0A
BATTERY
-500mA
500mA/div
CHARGER SOFT-START
200 μ s/div
Pin Description
PIN
1
2, 3
4
5
NAME
PREQ
DC
CEN
PEN1
FUNCTION
Charge Prequal Output. Active-low, open-drain output pulls low when the charger enters the prequal state.
See Figure 5.
DC Power Input. DC is capable of delivering up to 2A to SYS. DC supports both AC adapter and USB inputs. The
DC current limit is set with PEN1, PEN2, USUS, and R PSET . See Table 2. Both DC pins must be connected
together externally.
Charger Enable Input. Connect CEN to GND to enable battery charging when a valid source is connected at DC
or USB. Connect to VL or drive high with a logic signal to disable battery charging.
DC Input Limit Control. If PEN1 is high, the DC input current limit is 3000/R PSET . If PEN1 is low, the DC limit is set
by PEN2 and USUS. See Table 2.
8
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