TEA1541 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

TEA1541

SMPS control IC with synchronization function

Philips Electronics 

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VCC

1

GND

S1

2

mains ok

SUPPLY

MANAGEMENT

internal UVLO start

supply

ICTRL

SYNC.

DETECTOR

VOLTAGE

CONTROLLED

OSCILLATOR

(frequency

information)

FREQUENCY

CONTROL

CTRL 3

(internal

SAMPLE- control)

AND-HOLD

(internal

control)

OVER-

TEMPERATURE

PROTECTION

3.5 V

POWER-ON

RESET

burst

detect

TEA1541

BURST

CONTROL

(frequency

information)

MAXIMUM

ON-TIME

PROTECTION

700 mV

DEM

SHORT-CIRCUIT

PROTECTION

OCP

CONTINUOUS

MODE

PROTECTION

−50 mV

PCS

IDEM

START-UP

CURRENT

SOURCE

PRIMARY

CURRENT

SIMULATION

Clamp

100 mV

OVERVOLTAGE

PROTECTION

8 VIN

(internal

control)

7

HVS

4

DEM

PCS

OCP

LOGIC

S

Q

UVLO R

OCP

LEB

blank

DRIVER

ISS

S2

soft

start

6

DRIVER

5

Isense

winding

short-

circuit

880 mV

(frequency

information)

OVERPOWER

PROTECTION

MDB083

Fig.2 Block diagram.

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