ACE722A Datasheet, PDF (4/9 Pages) ACE Technology Co., LTD. – 2A PWM BUCK DC-DC Converter

Technology
ACE722A
2A PWM BUCK DC-DC Converter
Electrical Characteristics
(Vcc=12V, V_OUT=5V, T_A=25℃, unless otherwise noted.)
Parameter
Symbol
Input Voltage
V_IN
Shutdown Quiescent Current
I_SHDN
Quiescent Current
I_Q
Feedback Voltage
V_FB
Feedback Bias Current
I_FB
Switch Current Limit
I_LIM
Oscillator Frequency
fosc
Frequency of Current Limit or Short
Circuit Protection
fosc1
Error Amplifier Voltage Gain
G_V
Error Amplifier Transconductance
G_S
EN Pin Threshold
V_H
V_L
EN Pin Input Leakage Current
I_EN
Internal PMOS ON Resistance
R_DSON
Maximum Duty Cycle
Thermal Shutdown
Thermal Shutdown Hysteresis
D_MAX
T_OTSD
T_HYS
Conditions
V_EN=0.4V
V_EN=2V, V_FB=1.3V
V_IN=5V to 25V
V_FB=1.3V
V_FB<0.52V
V_EN=2.5V
V_IN=12V
V_FB=0.65V
V_EN=12V,I_OUT=2A
V_FB=0.65V,
I_SW=0.1A
Min Typ Max Units
4.75
25
V
44 60 μA
1.3 2 mA
0.784 0.8 0.816 V
-0.1 -0.5 μA
2.5 3.4
A
336 420 504 kHz
40
kHz
1000
V/V
700
μA/V
1.5
V
0.7 V
-5 -10 μA
130 150 mΩ
100 %
155
℃
20
℃
Typical Performance Characteristics
V_CC=12V, V_OUT=5V, T_A=25℃, unless otherwise specified
Output Current (A)
Figure 1. Efficiency vs. Output Current
Temperature (℃)
Figure 2. Operation Frequency vs. Temperature
VER 1.2 4