MAX1538ETI

更新时间： 2024-11-25 11:18:31

品牌	Logo	应用领域
美信 - MAXIM		电源电路电池电源管理电路信息通信管理
页数	文件大小	规格书
22页	492K
描述
Power-Source Selector for Dual-Battery Systems

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技术参数
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MAX1538ETI 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	HVQCCN, LCC28,.2SQ,20	针数：	28
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.29
Is Samacsys：	N	可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	S-XQCC-N28
JESD-609代码：	e0	长度：	5 mm
湿度敏感等级：	1	信道数量：	1
功能数量：	1	端子数量：	28
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	HVQCCN
封装等效代码：	LCC28,.2SQ,20	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	240
电源：	5/28 V	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Power Management Circuits
最大供电电流 (Isup)：	0.054 mA	最大供电电压 (Vsup)：	28 V
最小供电电压 (Vsup)：	4.75 V	标称供电电压 (Vsup)：	16.8 V
表面贴装：	YES	技术：	BICMOS
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn85Pb15)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	20
宽度：	5 mm	Base Number Matches：	1

MAX1538ETI 数据手册

19-3169; Rev 0; 1/04

Power-Source Selector for

Dual-Battery Systems

General Description

Features

The MAX1538 selector provides power-source control

for dual-battery systems. The device selects between

an AC adapter and dual batteries based on the pres-

ence of the three power sources and the state of

charge of each battery. The MAX1538 includes analog

comparators to detect AC/airline-adapter presence and

determine battery undervoltage. Fast analog circuitry

allows the device to switch between power sources to

implement a break-before-make time, which allows hot

swapping of battery packs. The MAX1538 indepen-

dently performs power-source monitoring and selec-

tion, freeing the system power-management µP for

other tasks. This simplifies the development of µP

power-management firmware and allows the µP to enter

standby, reducing system power consumption.

♦ Automatically Detects and Responds to

Low-Battery Voltage Condition

Battery Insertion and Removal

AC-Adapter Presence

Airline-Adapter Presence

♦ Step-Down and Step-Up Charger Compatibility

♦ Fast Break-Before-Make Selection

Allows Hot Swapping of Power Sources

No External Schottky Diodes Needed

♦ 50µA Maximum Battery Quiescent Current

♦ Implements Battery Capacity Relearning

♦ Allows Usage of Aircraft Supply

♦ Direct Drive of P-Channel MOSFETs

The MAX1538 supports “relearn mode,” which allows

the system to measure and fully utilize battery capacity.

In this state, the part allows the selected battery to be

discharged even when an AC adapter is present. The

MAX1538 can also be used to power the system in an

aircraft. On detecting an airline adapter, the MAX1538

automatically disables charging or discharging of bat-

tery packs and only allows the system to be powered

from the adapter.

♦ Simplifies Power-Management µP Firmware

♦ 4.75V to 28V AC-Adapter Input Voltage Range

♦ Small 28-Pin Thin QFN Package (5mm x 5mm)

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX1538ETI

-40°C to +85°C

28 Thin QFN

The MAX1538 is available in a space-saving 28-pin thin

QFN package with a maximum footprint of 5mm x 5mm.

Typical Operating Circuit

Applications

Notebook and Subnotebook Computers

ACDET

CHRG

AIRDET

BATSEL

Internet Tablets

RELRN

ADPIN

OUT2

Dual-Battery Portable Equipment

OUT1

REVBLK

OUT0

EXTLD

BATTERY

CHARGER

MAX1538

ADPBLK

CHG_OUT

CHGIN

CHGA

MINVA

MINVB

Pin Configuration appears at end of data sheet.

CHGB

DISB

GND

DISA

BATB

BATA

BATSUP

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...22

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MAX1538ETI 替代型号

型号	品牌	替代类型	描述	数据表
MAX1538ETI+	MAXIM	类似代替	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, MO-220WH
MAX1538ETI-T	MAXIM	功能相似	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, MO-220WH

与MAX1538ETI相关器件

型号	品牌	获取价格	描述	数据表
MAX1538ETI+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, MO-220WH
MAX1538ETI-T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, MO-220WH
MAX1538EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1538
MAX153C/D	MAXIM	获取价格	1Msps, レP-Compatible, 8-Bit ADC with 1レA Powe
MAX153CAP	MAXIM	获取价格	1Msps, レP-Compatible, 8-Bit ADC with 1レA Powe
MAX153CAP+T	MAXIM	获取价格	ADC, Flash Method, 8-Bit, 1 Func, 1 Channel, Parallel, 8 Bits Access, CMOS, PDSO20, SSOP-2
MAX153CAP-T	MAXIM	获取价格	ADC, Flash Method, 8-Bit, 1 Func, 2 Channel, Parallel, 8 Bits Access, CMOS, PDSO20, SSOP-2
MAX153CPP	MAXIM	获取价格	1Msps, レP-Compatible, 8-Bit ADC with 1レA Powe
MAX153CPP+	MAXIM	获取价格	ADC, Flash Method, 8-Bit, 1 Func, 2 Channel, Parallel, 8 Bits Access, CMOS, PDIP20, 0.300
MAX153CWP	MAXIM	获取价格	1Msps, レP-Compatible, 8-Bit ADC with 1レA Powe

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