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SC1437ISK-B45TR

更新时间： 2024-02-04 18:59:30

品牌	Logo	应用领域
商升特 - SEMTECH		电源电路电源管理电路光电二极管
页数	文件大小	规格书
8页	95K
描述
Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay

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技术参数
数据手册

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SC1437ISK-B45TR 技术参数

生命周期：	Obsolete	零件包装代码：	SOT-23
包装说明：	LSSOP,	针数：	5
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.84
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：	R-PDSO-G5
长度：	2.925 mm	信道数量：	1
功能数量：	1	端子数量：	5
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	LSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
认证状态：	Not Qualified	座面最大高度：	1.45 mm
最大供电电压 (Vsup)：	6.3 V	最小供电电压 (Vsup)：	1.8 V
标称供电电压 (Vsup)：	4.2 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.95 mm	端子位置：	DUAL
宽度：	1.625 mm	Base Number Matches：	1

SC1437ISK-B45TR 数据手册

SC1437

Precision Voltage Detector With

Programmable Trigger Voltage & Timer Delay

POWER MANAGEMENT

Features

Description

! Low quiescent current, less than 10µA typical

! Input voltage range 1.8V to 6.8V

! Adjustable or preset voltage trip point

! Selectable timer delays of 0, 40 and 80ms without use of

external resistor

! SOT-23 5 lead package

! Accuracy is 2% over specified temperature range

! 30V maximum rating

The SC1437 is a battery over voltage detection circuit with driver

for external MOSFET. The trip point is adjustable with an external

resistor divider connected to the SENSE pin. The trip point is

preset to a nominal trip voltage of 4.2V if no external divider is

used. Other internal trip voltages of 4.5V and 4.7V are available,

specified by different part numbers. An internal delay, with two

selectable times or bypass, is on-board to suppress accidental

over voltage conditions due to glitches on the battery supply volt-

age, V+. The delay is externally adjustable by pulling the SEL pin

high, low, or left floating. During an actual over voltage condition,

the internal driver will pull the over voltage pin (OV) down to the

voltage present at the V- pin. This insures the external N-Channel

MOSFET will be completely off during an over voltage condition.

Supply current during the monitoring mode of operation is ap-

proximately 10µA. If an over voltage condition is detected, supply

currents increase when the timer is started. A voltage comparator

will engage at voltages greater than 6.8V, which bypasses the

timer and open circuits the battery by turning off the external

MOSFET. This important function protects the battery during the

timer delay in the event of a charger failure. There are three

functional options available. With the B option the OV pin is active

low. With the L option the OV pin is active high. With the H option

the OV pin is open drain, active high. All options are available in a

5 lead SOT-23 package.

Applications

! Battery packs

! Portable electronics

! Lithium Ion protection circuits

! Programmable Fuse

! Power Monitoring

! CPU Reset Circuits

Typical Application Circuit

100

SEL

V+

V-

BATTERY

SENSE

SC1437

0.1uF

VTRIP = 2.1(1+^R2/_R1)

0.476 < (^R2/_R1) < 2

www.semtech.com

Revision 01/10/2001

12 3 4 5 6 7 8

中文翻译

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与SC1437ISK-B45TR相关器件

型号	品牌	获取价格	描述	数据表
SC1437ISK-B47TR	SEMTECH	获取价格	Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
SC1437ISK-H42TR	SEMTECH	获取价格	Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
SC1437ISK-H45TR	SEMTECH	获取价格	Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
SC1437ISK-H47TR	SEMTECH	获取价格	Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
SC1437ISK-L42TR	SEMTECH	获取价格	Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
SC1437ISK-L45TR	SEMTECH	获取价格	Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
SC1437ISK-L47TR	SEMTECH	获取价格	Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
SC143B	POWEREX	获取价格	TRIAC, 200V V(DRM), 8A I(T)RMS
SC143B-16	MOTOROLA	获取价格	200V, 8A, TRIAC, TO-220AB, TO-220, 2 PIN
SC143B-A	MOTOROLA	获取价格	TRIAC, 200V V(DRM), 8A I(T)RMS, TO-220AB,

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