Rainbow-electronics MAX781 Bedienungsanleitung PDF herunterladen (Seite 8)

MAX781

PDA/Hand-Held Computer Power Controller

8 _______________________________________________________________________________________

_________________________________________________Pin Description (continued)

33 TEMP Analog Multiplexer Input and Battery Sense Input

34 AUXIN Analog Multiplexer Input

25 3OUT +3.3V Regulator Feedback Connection and Linear-Regulated + 3.3V Output

26 CS +3.3V Regulator Current-Sense Input

–

—

–

Shutdown-Mode Control Input

36 GD1 High-Side Gate-Driver Output

29 VCHG Charger Voltage Input

30 UVLO Undervoltage Lockout Threshold Input

31 REF +2.5V Reference Output

32 AOUT Analog Multiplexer Buffered Output

27 SS +3.3V Regulator Soft-Start Capacitor Connection

28 BATT Battery Voltage Input

MAX781

C12

C11

+5V LOW 

CURRENT OUTPUT



+14V OUTPUT

+3.3V

OUTPUT

PCMCIA 2.0

CARD SLOT

VPPs

GATE DRIVERS

FOR POWER

SWITCHING

5OUT

VHI

BATT

DHI

BST

DLO

PGND

3OUT

AGND

VPPA

SPI

COMPATIBLE

SERIAL 

INTERFACE

VPPB

GD1

UVLO SS

GD5

AOUT

AUXIN

FAST

INT

DOUT

DIN

SCLK

CSBAT

COMP

TEMP

SYNC

REF

DCHG

BATTERY

CHARGER

SECTION

C14 D1

BATTERY

CHARGER

DC INPUT

C3 C2

C10

VCHG

SHDN

Figure 1. Typical Operating Circuit

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 23 24

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