Datasheet > A6250

A6250

更新时间： 2024-11-05 03:16:55

品牌	Logo	应用领域
EMMICRO		监控
页数	文件大小	规格书
13页	586K
描述
High Efficiency Linear Power Supply with Accurate Power Surveillance and Software Monitoring

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中文翻译

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A6250 数据手册

EM MICROELECTRONIC-MARIN SA

A6250

High Efficiency Linear Power Supply with Accurate

Power Surveillance and Software Monitoring

Features

software clears the watchdog too quickly (incorrect cycle

time) or too slowly (incorrect execution) it will cause the

system to be reset. The system enable output prevents

critical control functions being activated until software has

successfully cleared the watchdog three times. Such a se-

curity could be used to prevent motor controls being ener-

gized on repeated resets of a faulty system.

n Highly accurate 5 V, 250 mA guaranteed output

n Low dropout voltage, typically 260 mV at 250 mA

n Low quiescent current, typically 175 µA

n Standby mode, maximum current 340 µA (with

100 µA load on OUTPUT)

n Unregulated DC input can withstand -20 V reverse

battery and +60 V power transients

n Fully operational for unregulated DC input voltage up

to 40 V and regulated output voltage down to 3.0 V

n Reset output guaranteed for regulated output voltage

down to 1.2 V

Applications

n Industrial electronics

n Cellular telephones

n Security systems

n Battery powered products

n High efficiency linear power supplies

n Automotive electronics

n No reverse output current

n Very low temperature coefficient for the regulated

output

n Current limiting

n Comparator for voltage monitoring, voltage reference

1.52 V

Typical Operating Configuration

n Programmable reset voltage monitoring

n Programmable power on reset (POR) delay

n Watchdog with programmable time windows

guarantees a minimum time and a maximum time

between software clearing of the watchdog

n Time base accuracy ±10%

n System enable output offers added security

n TTL/CMOS compatible

A6250

n -40 to +125°C temperature range

n PSOP2-16 package

Description

The A6250 offers a high level of integration by combining

voltage regulation, voltage monitoring and software moni-

toring in a 16 lead package. The voltage regulator has a

low dropout voltage (typ. 260 mV at 250 mA) and a low

quiescent current (175 µA). The quiescent current in-

creases only slightly in dropout prolonging battery life.

Built-in protection includes a positive transient absorber

for up to 60 V (load dump) and the ability to survive an un-

regulated input voltage of -20 V (reverse battery). The in-

put may be connected to ground or a reverse voltage

without reverse current flow from the output to the input. A

comparator monitors the voltage applied at the V_INinput

comparing it with an internal 1.52 V reference. The

power-on reset function is initialized after V_INreaches 1.52

V and takes the reset output inactive after T_PORdepending

of external resistance. The reset output goes active low

when the V_INvoltage is less than 1.52 V. The RES and EN

outputs are guaranteed to be in a correct state for a regu-

lated output voltage as low as 1.2 V. The watchdog func-

tion monitors software cycle time and execution. If

Fig. 1

Pin Assignment

A6250

Fig. 2

12 3 4 5 6 7...13

中文翻译

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与A6250相关器件

型号	品牌	获取价格	描述	数据表
A6250A	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AE3R-30	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AE3R-33	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AE3VR-30	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AE3VR-33	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AK3R-30	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AK3R-33	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AK3VR-30	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250AK3VR-33	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR
A6250C	AITSEMI	获取价格	LOW DROPOUT VOLTAGE REGULATOR

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