UNDERVOLTAGE

SENSOR

OSC

REF (2)

(8) CS

0.5V

OUT1 (5)

OUT2 (6)

GND (7)

REFERENCE

GENERATOR

RAMP

GENERATOR

DRIVER

DRIVER

PWM

5k

5.2V

(9) Rt /Sync

SS

0.65V

10k

5k

CLK

(10) SS

(3) COMP

2.5V

10 PA

2.5V

0.5V

0V

5.0V

9.6V SERIES

REGULATOR

START UP

CIRCUIT

THERMAL

SHUTDOWN

SENSOR

SS

4.9V

5.2V

LOGIC

Current Sense

+

-

+

-

+

-

R

S

Q

Q

CLR

SET

C

D

Q

Q

LM5033

www.ti.com

SNVS181B – APRIL 2004 – REVISED APRIL 2013

Block Diagram

Figure 2. Functional Block Diagram

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Copyright © 2004–2013, Texas Instruments Incorporated

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