This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in

white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...

SUPPLY

MANAGEMENT

internal

supply

UVLO

start

VCC

1

2

3

(2)

(3)

(6)

GND

CTRL

FREQUENCY

CONTROL

VOLTAGE

CONTROLLED

OSCILLATOR

LOGIC

LOGIC

OVER-

VOLTAGE

PROTECTION

OVERPOWER

PROTECTION

short

winding

soft

start

S2

OVER-

TEMPERATURE

PROTECTION

SQ

R

UVLO

Q

MAXIMUM

ON-TIME

PROTECTION

POWER-ON

RESET

−1

UP/DOWN

COUNTER

VALLEY

TEA1506P;

TEA1506AP

(TEA1506T;

TEA1506 AT)

100

mV

clamp

DRIVER

0.88 V

0.5 V

5

Isense

6

DRIVER

MDB505

4

DEM

8

(9)

(11)

(7)

(14)

DRAIN

OCP

LEB

blank

Iss

Iprot(CTRL)

SQ

R

VCC < 4.5 V

or UVLO

(TEA1506AT)

Q

Iprot(DEM)

3.8 V

Fig.2 Block diagram.

Pin numbers in parenthesis represent the SO version.