U6229B datasheet(6/8 Pages) TEMIC | DC/DC Converter

Part Name

Description

U6229B

DC/DC Converter - Power Supply 28 V ( 8 Page)

TEMIC

6 page

U6229B

Rev. A1, 21-Apr-99

Preliminary Information

6 (8)

Unit

Max.

Typ.

Min.

Symbol

Test Conditions / Pins

Parameters

VREF – regulator

Output voltage

IV11 = –1 mA to –14 mA

V10

4.88

5.12

Switch-off threshold

Undervoltage

Overvoltage

dV11off

150

Switch-on threshold

Undervoltage

Overvoltage

dV11on

Overvoltage protection

Threshold for overvoltage

detection

VBatt

Battery monitor

VBatt = 40 V

V14

NRES

Saturation voltage

I12 = 1.6 mA, NRES = low

V12

0.4

Reverse current

V12 = 5 V

Ir12

123

U6229B

35.7 k

RSET

249

RK15

CVREF

2.2

BYG10

5 V

Reference

supply

SI9955DY

150

LVB

150

LVH

7 V

Step-down

converter

28.4 V

Step-up

converter

5 V

Logic

supply

CVA1

1000

CVB

100

1 nF

COS1

BYG 10

96 12285

Batt

CVH

CVCC

220

Figure 5. Application example

1 2 3 4 5 6 7 8

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