参数资料
型号: MAX1551EZK+T
厂商: Maxim Integrated Products
文件页数: 1/8页
文件大小: 0K
描述: IC BATT CHRGR LI+ 1CELL SOT23-5
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
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: 3.7 V ~ 7 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-5 细型,TSOT-23-5
供应商设备封装: TSOT-23-5
包装: 标准包装
其它名称: MAX1551EZK+TDKR
AVAILAB
LE
MAX1551/MAX1555
SOT23 Dual-Input USB/AC Adapter 1-Cell Li+
Battery Chargers
General Description
The MAX1551/MAX1555 charge a single-cell lithium-ion
(Li+) battery from both USB and AC adapter sources.
They operate with no external FETs or diodes, and
accept operating input voltages up to 7V.
On-chip thermal limiting simplifies PC board layout and
allows optimum charging rate without the thermal limits
imposed by worst-case battery and input voltage. When
the MAX1551/MAX1555 thermal limits are reached, the
chargers do not shut down, but progressively reduce
charging current.
The MAX1551 includes a POK output to indicate when
input power is present. If either charging source is
active, POK goes low. The MAX1555 instead features a
CHG output to indicate charging status.
Features
? Charge from USB or AC Adapter
? Automatic Switchover when AC Adapter is
Plugged In
? On-Chip Thermal Limiting Simplifies Board
Design
? Charge Status Indicator
? 5-Pin Thin SOT23 Package
Ordering Information
With USB connected, but without DC power, charge cur-
rent is set to 100mA (max). This allows charging from
both powered and unpowered USB hubs with no port
communication required. When DC power is connected,
PART
MAX1551 EZK-T
MAX1555 EZK-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
5 Thin SOT23-5
5 Thin SOT23-5
charging current is set at 280mA (typ). No input-blocking
diodes are required to prevent battery drain.
The MAX1551/MAX1555 are available in 5-pin thin SOT23
packages and operate over a -40°C to +85°C range.
Selector Guide
PDAs
Applications
PART
MAX1551EZK
MAX1555EZK
TOP MARK
ADRT
ADRU
FEATURES
POK Output
CHG Output
Wireless Appliances
Cell Phones
Functional Diagrams
Digital Cameras
Pin Configuration
Typical Operating Circuit
TOP VIEW
AC ADAPTER
DC
BAT
TO SYSTEM
3.7V TO 7V
LOAD
USB
1
5
BAT
Li+
GND 2
POK 3
(CHG)
MAX1551
(MAX1555)
4
DC
USB
3.7V TO 6V
USB
CHARGE
CONTROL
LOGIC
CONTROL
POK
(CHG)
TO LOGIC RAIL
MAX1551
THIN SOT23
(MAX1555)
GND
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-2902; Rev 0; 7/03
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