A6986TR datasheet(8/67 Pages) STMICROELECTRONICS

Part #	A6986TR

Description	38 V, 2 A synchronous step-down switching regulator with 30 쨉A quiescent current

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Electrical characteristics

A6986

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DocID026211 Rev 6

3

Electrical characteristics

TJ = -40 to 135 °C, VIN = 12 V unless otherwise specified.

Table 5. Electrical characteristics

Symbol

Parameter

Test condition

Note Min. Typ. Max. Unit

VIN

Operating input voltage range

4

38

V

VINH

VCC UVLO rising threshold

2.7

3.5

VINL

VCC UVLO falling threshold

2.5

3.5

IPK

Peak current limit

Duty cycle < 40%

2.6

A

Duty cycle = 100%

closed loop operation

2.1

IVY

Valley current limit

2.7

ISKIP

Skip current limit

(1)

0.6

0.8

IVY_SNK Reverse current limit

LNM or VOUT overvoltage

0.5

1

2

RDSON HS High-side RDSON

ISW = 1 A

0.18

0.36

0



RDSON LS Low-side RDSON

ISW = 1 A

0.15

0.30

0

fSW

Selected switching frequency FSW pinstrapping before SS

see Table 6: fSW

selection

IFSW

FSW biasing current

SS ended

0

500

nA

LCM/LNM

Low noise mode /

Low consumption mode

selection

MLF pinstrapping before SS

see Table 7: LNM / LCM

selection on page 12

IMLF

MLF biasing current

SS ended

0

500

nA

D

Duty cycle

(2)

0100

%

TON MIN Minimum On time

100

ns

VCC regulator

VCC

LDO output voltage

VBIAS = GND (no switchover)

2.9

3.3

3.6

V

VBIAS = 5 V (switchover)

2.9

3.3

3.6

SWO

VBIAS threshold

Switch internal supply from VIN to

VBIAS

2.85

3.2

Switch internal supply from VBIAS to

VIN

2.8

3.15

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