参数资料
型号: MAX8677CETG+T
厂商: Maxim Integrated Products
文件页数: 10/21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
DC POWER
MAX8677C
AC
ADAPTER
DC
MANAGEMENT
SYS
TO
SYSTEM
LOAD
PWR
DOK
OK
CURRENT-
LIMITED
VOLTAGE
REGULATOR
Li+ BATTERY CHARGER
AND SYS LOAD SWITCH
ISET
CHARGER
CURRENT-
SET
INPUT
LIMIT
VOLTAGE
CONTROL
BAT
BAT+
BAT-
T
USB
USB
USB POWER
MANAGEMENT
THERMISTOR
MONITOR
(SEE FIGURE 7)
THM
NTC
VL
UOK
PWR
OK
CURRENT-
LIMITED
VOLTAGE
REGULATOR
IC
THERMAL
REGULATION
CHARGE
TERMINATION
AND MONITOR
CHG
PREQ
VL = 15%
SET
TSET
N.C. = 10%
5%
INPUT
FLT
LIMIT
CHARGE
TIMER
CT
500mA
USB 100mA
LIMIT
DC MODE
USB
SUSPEND
PEN1
PEN2
USUS
PSET
INPUT AND
CHARGER
CURRENT LIMIT
SET LOGIC
CEN
GND
DC
LIMIT
Figure 1. Block Diagram
Circuit Description
The MAX8677C contains an Li+ battery charger, as
well as power MOSFETs and control circuitry to man-
age power flow in portable devices. See Figure 1. The
EP
charger has two power inputs, DC and USB. These can
be separately connected to an AC adapter output and
a USB port, or the DC input can be a single power
input that connects to either an adapter or USB. Logic
inputs, PEN1 and PEN2, select the correct current limits
10
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