MC33998D 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC33998D

POWER SUPPLY INTEGRATED CIRCUIT

Freescale Semiconductor 

Freescale Semiconductor, Inc.

VPW R

KA_VPW R

5.0 V VRE F1

5.0 V VRE F2

339 98

I -lim

D r iv e

S oft

Start

Enb

O sc

Logic

&

Latch

Ramp

V bg

Retry

VREF1

Reg.

B andgap Vbg

Voltage

S nsenb Reference

Retry

VREF2

Reg.

Sns enb

Sn senb

En able

Co ntrol E nb

Enb

2.6V

Lin ear

Re gulat or

D r i ver

POR

Enb

Vbg

2. 6V

Standby

Reg.

Ch a r ge

Pump

P wr OK

Vk amOK

VSW

5.0 V

FBKB

VSUM

VDD H

DR V L

FBL

2.6 V

V KAM

2.6 V

PWROK

VKAMOK

CR ES

SNSEN

EN

PGND

Figure 1. 33998 Simplified Block Diagram

33998

2

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