Datasheet > ST890_05

ST890_05

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
9页	444K
描述
1.2A CURRENT LIMITED HIGH SIDE WITH THERMAL SHUTDOWN

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ST890_05 数据手册

ST890

Table 2: Absolute Maximum Ratings

Symbol

Parameter

Value

Unit

Supply Voltage

-0.5 to 6

Input Voltage at ON pin

Input Voltage at FAULT_N pin

Voltage at SET pin

FAULT_N

-0.5 to (V + 0.5)

SET

Maximum Continuous Switching Current

Storage Temperature Range

1.5

-65 to +150

°C

stg

Operating Junction Temperature Range (C series)

(B series)

0 to +70

-40 to +85

°C

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is

not implied.

Table 3: Thermal Data

Symbol

Parameter

SO-8

Unit

Thermal Resistance Junction-ambient (*)

160

°C/W

thj-amb

(*) This value depends from thermal design of PCB on which the device is mounted.

Table 4: Truth Table For ON/OFF Switch

Figure 2: Pin Connection (top view)

ON/OFF

OUT

OFF

FAULT

FLAG

Normal Operation

Fault Condition

Table 5: Pin Description

Pin N°

Symbol

Name and Function

1, 2

Input P-Channel MOSFET source. Bypass IN with a 1µF capacitor to ground.

Active Low Switch On Input. A logic low turns the switch ON

Ground

GND

SET

Set Current Limit Input. A resistor from SET to GROUND sets the current limit for

the switch. R

=1.38x10 /I , where I

is the desired current limit in Amperes

LIM

SET

LIM

6, 7

OUT

Switch Output. P-Channel MOSFET drain. Bypass OUT with a 0.1µF capacitor to

GROUND.

FAULT

Fault Indicator Output. This open drain output goes low when in current limit or

when the die temperature exceeds 135°C

2/9

123 4 5 6 7...9

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