TEA1533T Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

TEA1533T

GreenChip™II SMPS control IC

Philips Electronics 

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VCC 2

S1

3

GND

SUPPLY

MANAGEMENT

M-level

internal UVLO start

supply

VOLTAGE

CONTROLLED

OSCILLATOR

FREQUENCY

CONTROL

START-UP

CURRENT SOURCE

DEMAG

SHORT

PROTECTION

OCP

VALLEY

Iprot(DEM)

clamp

LOGIC

50

mV

100

mV

UP/DOWN

COUNTER

OVER-

VOLTAGE

PROTECTION

14

DRAIN

12, 13

7

HVS

n.c.

DEM

6

CTRL

Iprot(CTRL)

−1

POWER-ON

RESET

2.5 V

burst

detect

OVER-

TEMPERATURE

PROTECTION

LOGIC

SQ

UVLO R Q

SQ

VCC < 4.5 V

or UVLO

(TEA1533AT)

RQ

DRIVER

LEB

blank

OCP

11 DRIVER

Iss

soft

0.5 V

start

S2

9

Isense

TEA1533T

TEA1533AT

MAXIMUM

ON-TIME

PROTECTION

short

winding

0.88 V

OVERPOWER

PROTECTION

MGU500

Fig.2 Block diagram.

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