NCP1421 Ver la hoja de datos (PDF) - ON Semiconductor

Número de pieza

componentes Descripción

Fabricante

NCP1421

Boost Converter - Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA

ON Semiconductor 

NCP1421

0.5 V Chip

Enable

FB

+

1

-

PFM

REF

4

Voltage

Reference

LBI/EN

2

1.20 V

+

-

VBAT

BAT

M3 5

ZLC +

-

+

20 mV

CONTROL LOGIC

TRUE CUTOFF

CONTROL

_ZCUR _TSDON

VDD

_MSON

_MAINSW2ON

M2

SENSEFETt

M1

LX

VDD 7

OUT

8

VOUT

_CEN

GND

_PFM

VDD

_MAINSWOFD

_SYNSW2ON

6

GND

_SYNSWOFD

_VREFOK

_ILIM

+

-

GND

RSENSE

+

GND

LBO

3

GND

Figure 1. Detailed Block Diagram

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