UPC1933GR 查看數據表（PDF） - NEC => Renesas Technology

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UPC1933GR

DC-DC CONVERTER CONTROL IC

NEC => Renesas Technology 

µ PC1933

CONTENTS

1. ELECTRICAL SPECIFICATIONS ................................................................................................................ 5

2. CONFIGURATION AND OPERATION OF EACH BLOCK.................................................................... 11

2.1 Reference Voltage Generator ...........................................................................................................................11

2.2 Oscillator ...........................................................................................................................................................11

2.3 Under Voltage Lock-out Circuit ........................................................................................................................11

2.4 Error Amplifier...................................................................................................................................................11

2.5 PWM Comparator..............................................................................................................................................12

2.6 Timer Latch-Method Short Circuit Protection Circuit ....................................................................................12

2.7 Output Circuit....................................................................................................................................................12

3. NOTES ON USE........................................................................................................................................ 13

3.1 Setting the Output Voltage ...............................................................................................................................13

3.2 Setting the Oscillation Frequency ...................................................................................................................13

3.3 Preventing Malfunction of the Timer Latch-Method Short Circuit Protection Circuit..................................13

3.4 ON/OFF Control.................................................................................................................................................14

3.5 Maximum Duty Limit .........................................................................................................................................15

3.6 Notes on Actual Pattern Wiring........................................................................................................................15

4. APPLICATION EXAMPLE ......................................................................................................................... 16

4.1 Application Example.........................................................................................................................................16

4.2 List of External Parts ........................................................................................................................................16

5. PACKAGE DRAWING ................................................................................................................................ 17

6. RECOMMENDED SOLDERING CONDITIONS ....................................................................................... 18

4

Data Sheet G13690EJ3V0DS00

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