ACE724C

18V 2A Synchronous PFM/PWM Buck Converter

VER 1.5

4

Typical Application

ACE724C

* When Vin is as low as 5V, Cc is recommended to be 100pf, but not needed when Vin larger than 5V.

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Input voltage range

VDD

3.5

18

V

Feedback voltage

Vref

Vin=12V, Ven=5V

0.90

0.923

0.946

V

UVLO Voltage

Vin H->L, Iout=0.5A

3.4

V

Feedback leakage current

Ifb

0.1

0.4

uA

Quiescent current

Iq

Active, Vfb=1V, No switching

1.1

1.5

mA

Shutdown, Vin=8V

6

10

uA

Line regulation

LnReg

Vin=5V to 12V

0.1

%/V

Load regulation

LdReg

Iout=0.1 to 2A

0.02

%/A

Switching

Fsoc

Ven=2V, Vin=12V

340

KHz

PMOS Rdson

RdsonP

130

mΩ

NMOS Rdson

RdsonN

110

mΩ

Peak current limit

Llimit

3.5

A

EN high threshold

Venh

1

1.5

2

V

EN low threshold

Venl

0.5

Input over-voltage

Vovp

Ven=2V

18

V

Over temperature proection

TSD

150

℃

R1

R2