Datasheet > L6986H3V3

L6986H3V3

更新时间： 2024-02-19 23:10:38

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
68页	18008K
描述
38 V, 2 A synchronous step-down switching regulator with 30 Î¼A quiescent current

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L6986H3V3 数据手册

L6986H

Pin settings

2.1

Pin connection

Figure 2. Pin connection (top view)

RST

VCC

VBIAS

VIN

SS/INH

EXPOSED

PAD TO

SYNCH/ISKIP

SGND+PGND

PGND

SGND

VOUT

FSW

MLF

COMP

DELAY

2.2

Pin description

Table 1. Pin description

Number

Description

The RST open collector output is driven low when the output

voltage is out of regulation. The RST is released after an

adjustable time DELAY once the output voltage is over the active

delay threshold.

RST

Connect a ceramic capacitor (≥ 470 nF) to filter internal voltage

reference. This pin supplies the embedded analog circuitry.

VCC

An open collector stage can disable the device clamping this pin

to GND (INH mode). An internal current generator (4 µA typ.)

charges the external capacitor to implement the soft-start.

SS/INH

The pin features master / slave synchronization in LNM (see Low

noise mode (LNM)) and skip current level selection in LCM (see

Low consumption mode (LCM)). In LNM, leave this pin floating

when it is not used.

SYNCH/ ISKP

FSW

A pull-up resistor (E24 series only) to VCC or pull down to GND

selects the switching frequency. Pin strapping is active only

before the soft-start phase to minimize the IC consumption.

A pull-up resistor (E24 series only) to VCC or pull-down to GND

selects the low consumption mode/low noise mode and the active

RST threshold. Pin strapping is active only before the soft-start

phase to minimize the IC consumption.

MLF

Output of the error amplifier. The designed compensation

network is connected at this pin.

COMP

An external capacitor connected to this pin sets the time DELAY

to assert the rising edge of the RST o.c. after the output voltage

is over the reset threshold. If this pin is left floating, RST is like a

Power Good.

DELAY

VOUT

Output voltage sensing

DS12905 - Rev 2

page 3/68

1 234 5 6 7...68

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