ACE2596 Datasheet, PDF (4/11 Pages) ACE Technology Co., LTD. – 150KHz 3A Buck DC-DC Converter

Technology
ACE2596
150KHz 3A Buck DC-DC Converter
For ADJ Output Voltage Version
Unless otherwise specified, T_J=25℃, The specifications with boldface type apply over Full Operating Junction Temperature
Range.
Parameter Symbol
Conditions
Min Typ Max Unit
Output
VOUT
4.5V≦V_IN≦32V,
0.2A≦I_LOAD≦3A
V_OUT programmed for 2.5V
1.193 _1.23 1.267
V
1.180
1.280
Efficiency
η
V_IN=12V, I_LOAD=3A, V_OUT=2.5V
73
%
Electrical Characteristics
For AallOutput Voltage Versions
Unless otherwise specified, V_IN=12V for 3.3V, 5V and adjustable version, V_IN=24V for 12V version, I_LOAD=500mA, T_J=25℃.
Specifications with boldface type apply over Full Operating Junction Temperature Range.
Parameter
Symbol
Conditions
Min Typ Max Unit
Feedback Bias Current
I_FB
Adjustable Version Only, V_FB=1.3V
10 50
nA
100
Oscillator Frequency
f
(Note 3)
127 150 173
kHz
110
173
Saturation Voltage
V_SAT
I_LOAD=3A (No output devices, V_FB=0V)
1.2 1.5
V
1.6
Maximum Duty Cycle
Minimum Duty Cycle
Current Limit
D_MAX
V_FB=0V
100
%
D_MIN
V_FB=1.3V
0
%
3.6 4.5 6.9
I_CL
Peak Current, No output devices, V_FB=0V _3.4
A
7.5
Output Leakage Current
I_SWL
Quiescent Current
I_Q
Output=0V, No output devices,
V_FB =1.3V, V_IN=32V
Output=-1V, No output devices,
V_FB =1.3V, V_IN=32V
V_FB=1.3V
50
μA
2 30 mA
5 10 mA
Standby Quiescent Current I_STBY
ON/OFF Pin=5V, V_IN=18V
200
80
μA
250
V_IL
ON/OFF Pin Logic
Input Threshold Voltage
V_IH
Regulator ON
Regulator OFF
0.6 V
2.0
V
I_H
ON/OFF Pin Input Current
I_L
V_PIN5=2.5V (Regulator OFF)
V_PIN5=2.5V (Regulator ON)
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).
5 15 μA
0.02 5 μA
VER 1.2 4