TEA1532BT 查看數據表（PDF） - NXP Semiconductors.

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TEA1532BT

GreenChip II SMPS control IC

NXP Semiconductors. 

NXP Semiconductors

5. Block diagram

TEA1532BT; TEA1532CT

GreenChip II SMPS control IC

VCC 1

2 S1

GND

SUPPLY

MANAGEMENT

internal UVLO start

supply

Vmains(oper)(en)

OSCILLATOR

SLOPE

COMPENSATION

4

CTRL

∆Isc/∆t

−1

5.6 V

POWER-ON

RESET

DCM

AND

CCM

DETECTION

START-UP

CURRENT SOURCE

VALLEY

LOGIC

Osc_Rdy

Duty_Max LOGIC

80

mV

DRIVER

SQ

UVLO R Q

LEB

blank

OCP

clamp

8

DRAIN

5

DEM

soft

start

S2

−50

mV

7

DRIVER

Istartup(soft)

0.5 V

control

detect

0.63 V

3

PROTECT

Ich

300 Ω

Idch

5.6 V

MAXIMUM

ON-TIME

PROTECTION

2.5 V

S3

(1)

protect

3 V detect

OVER-

TEMPERATURE

PROTECTION

(1) Switch S3 is not controlled in the TEA1532BT (fixed as drawn).

Fig 1. Block diagram

DCM and CCM

BROWN-OUT

PROTECTION

6

SENSE

SQ

VCC < 4.5 V

RQ

TEA1532BT

TEA1532CT

coa047

TEA1532BT_TEA1532CT_1

Product data sheet

Rev. 01 — 18 January 2007

© NXP B.V. 2007. All rights reserved.

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