Datasheet > ZXCT1032

ZXCT1032

更新时间： 2024-10-02 03:07:19

品牌	Logo	应用领域
捷特科 - ZETEX		电子控制器
页数	文件大小	规格书
10页	333K
描述
High-side inrush controller and electronic fuse

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中文翻译

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ZXCT1032 数据手册

ZXCT1032

High-side inrush controller and electronic fuse

Description

The ZXCT1032 is a high-side current monitor While in this mode the internal current monitor

that drives a PMOS or PNP transistor to continually checks the output current and

provide in-rush current limit and over-current compares it to the trip-current level determined

protection. The ZXCT1032 includes a high by V

accuracy high-side current monitor, a start-up

ISET

Over-current disconnect/fuse

timer and a re-try inhibit timer.

If the trip current limit is exceeded at any time the

ZXCT1032 enters its Over-current disconnect

mode. The drive pin is driven high, turning the

pass MOSFET off; the flag output goes low

indicating a fault.

The ZXCT1032 takes the voltage developed

across a current shunt resistor and compares

this with an externally set trip point. It works

in three modes:

•

Linear soft-start

The drive and flag outputs are latched in these

states for a period determined by C , V

Over-current detector

Over-current disconnect/fuse

and the

ISET

internally set discharge current (3µA typical). After

has discharged to 80mV the ZXCT1032 will

Linear soft-start

restart into its linear soft-start mode.

Upon power up the ZXCT1032 enters a linear

soft-start mode. During which the output

current ramps up from zero to a maximum

user defined trip point. The trip point is set by

The C charge and discharge times have been

ratioed to so that the power dissipation in the

pass MOSFET should allow indefinite operation

in the event of a continuous load failure.

the voltage on I

pin and R

SET

SENSE

The ramp rate is determined by capacitor C .

Pin 3 description:

The soft start ensures that capacitive loads are

smoothly charged without causing excessive

power supply startup transients.

Determines the load current trip level or

constant current level. ISET can be left open

circuit (internal 2.1V reference) or driven via a

DC voltage or µC PWM output. Its source

Over-current detectior

When external capacitor CT has charged up impedance is 50k⍀.

above the V

the ZXCT1032 switches from its

ISET

soft-start mode to its over-current detection

mode. During this mode the external MOSFET

will be fully enhanced reducing the its voltage

drop and power dissipation.

Features

Applications

•

Accurate high-side current sensing

•

Electronic fuse

User defined and dynamically adjustable

trip current

Short circuit protected supply feed

Hot swap

•

Load switch control

Fault flag logic output

User defined ramp and inhibit timers

SO8 package

Temperature range -40 to 85°C

Power over twisted pair

Ordering information

Order code

Pack

Part mark

Reel size

Tape width

Quantity per reel

ZXCT1032N8TA

SO8

1032

7”

12mm

500

Issue 3 - April 2007

www.zetex.com

12 3 4 5 6 7...10

中文翻译

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与ZXCT1032相关器件

型号	品牌	获取价格	描述	数据表
ZXCT1032N8TA	DIODES	获取价格	High-side inrush controller and electronic fuse
ZXCT1032N8TA	ZETEX	获取价格	High-side inrush controller and electronic fuse
ZXCT1041	ZETEX	获取价格	Bidirectional precision high-side current monitor
ZXCT1041	DIODES	获取价格	Bidirectional precision high-side current monitor
ZXCT1041E5TA	ZETEX	获取价格	Bidirectional precision high-side current monitor
ZXCT1041E5TA	DIODES	获取价格	Bidirectional precision high-side current monitor
ZXCT1050	ZETEX	获取价格	Precision wide input range current monitor
ZXCT1050	DIODES	获取价格	Precision wide input range current monitor
ZXCT1050E5TA	DIODES	获取价格	Precision wide input range current monitor
ZXCT1050E5TA	ZETEX	获取价格	Precision wide input range current monitor

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