A6986H datasheet(66/71 Pages) STMICROELECTRONICS

66 / 71 page

Contents

Application schematic .............................................................2

Pin settings........................................................................3

2.1

Pin connection ................................................................. 3

2.2

Pin description ................................................................. 3

2.3

Maximum ratings ............................................................... 5

2.4

Thermal data .................................................................. 6

2.5

ESD protection ................................................................ 6

Electrical characteristics...........................................................7

Parameters over the temperature range ...........................................12

Functional description ............................................................13

5.1

Power supply and voltage reference.............................................. 14

5.2

Voltage monitor ............................................................... 14

5.3

Soft-start and inhibit ........................................................... 14

5.3.1

Ratiometric startup ...................................................... 19

5.3.2

Output voltage sequencing ................................................ 20

5.4

Error amplifier ................................................................ 20

5.5

Output voltage line regulation ................................................... 20

5.6

Output voltage load regulation................................................... 21

5.7

High-side switch resistance vs. input voltage ...................................... 22

5.8

Light-load operation ........................................................... 22

5.8.1

Low noise mode (LNM) ................................................... 22

5.8.2

Low consumption mode (LCM) ............................................. 23

5.8.3

Quiescent current in LCM with switchover..................................... 29

5.9

Switchover feature ............................................................ 31

5.9.1

LCM ................................................................. 31

5.9.2

LNM ................................................................. 31

5.10

Overcurrent protection ......................................................... 31

5.11

OCP and switchover feature .................................................... 33

5.12

Overvoltage protection ......................................................... 35

A6986H

Contents

DS12861 - Rev 3

page 66/71

A6986H Datasheet(PDF) 66 Page - STMicroelectronics

A6986H Datasheet(HTML) 66 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71

Datasheet Download

Link URL