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AS1324

Datasheet - D e t a i l e d D e s c r i p t i o n

8 Detailed Description

The AS1324 is a high-efficiency buck converter that uses a constant-frequency current-mode architecture. The device contains two internal

MOSFET switches and is available in adjustable- and fixed-output voltage versions.

Figure 21. AS1324 - Block Diagram

AS1324

OSC

Frequency

Shift

0.6V

Reference

+

–

Error

Amp

Shutdown

Ramp

Compensator

0.6V

FB

OSCN

Digital

Logic

0.6V +

0.6V -

–

OVDET

+

–

+

–

ICOMP

+

–

IRCMP

+

Anti-

Shoot

Through

Not applicable to AS1324

Ω

Ω

Ω

PMOS

1

EN

5

4

3

SW

2

GND

NMOS

10µF

4.7µH

10µF