ACE259612WM+H datasheet(4/11 Pages) ACE

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ACE2596

Technology

150KHz 3A Buck DC-DC Converter

VER 1.2

For ADJ Output Voltage Version

Unless otherwise specified, TJ=25 ,

℃

The specifications with boldface type apply over Full Operating Junction Temperature

Range.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Output

VOUT

4.5V≦VIN≦32V,

0.2A≦ILOAD≦3A

VOUT programmed for 2.5V

1.193

1.180

1.23

1.267

1.280

Efficiency

VIN=12V, ILOAD=3A, VOUT=2.5V

Electrical Characteristics

For AallOutput Voltage Versions

Unless otherwise specified, VIN=12V for 3.3V, 5V and adjustable version, VIN=24V for 12V version, ILOAD=500mA, TJ=25℃.

Specifications with boldface type apply over Full Operating Junction Temperature Range.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Feedback Bias Current

IFB

Adjustable Version Only, VFB=1.3V

100

Oscillator Frequency

(Note 3)

127

110

150

173

kHz

Saturation Voltage

VSAT

ILOAD=3A (No output devices, VFB=0V)

1.2

1.5

1.6

Maximum Duty Cycle

DMAX

VFB=0V

100

Minimum Duty Cycle

DMIN

VFB=1.3V

Current Limit

ICL

Peak Current, No output devices, VFB=0V

3.6

3.4

4.5

6.9

7.5

Output=0V, No output devices,

VFB =1.3V, VIN=32V

μA

Output Leakage Current

ISWL

Output=-1V, No output devices,

VFB =1.3V, VIN=32V

Quiescent Current

VFB=1.3V

Standby Quiescent Current

ISTBY

ON/OFF Pin=5V, VIN=18V

200

250

μA

VIL

Regulator ON

0.6

ON/OFF Pin Logic

Input Threshold Voltage

VIH

Regulator OFF

2.0

VPIN5=2.5V (Regulator OFF)

μA

ON/OFF Pin Input Current

VPIN5=2.5V (Regulator ON)

0.02

μA

Note :

1. The switching frequency is reduced when the second stage current limit is activated.

2. The specifications with boldface are GBD (Guaranteed By Design).

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