ACE721A
Technology
1.2MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER
Recommended Work Conditions
Item
Min Typ Max Unit
Input Voltage (VIN)
2.5
5.5
V
Maximum Output Current (IOUT(MAX)
)
800
mA
℃
Operating Ambient Temperature (TA) -40
85
Electrical Characteristics
VIN=VEN=3.6V, TA=25℃, unless otherwise specified. Specifications with boldface type apply over full operating
temperature range from -40 to 85℃
Parameter
Symbol
ICC
Conditions
VFB=0.55V
Min.
Typ.
400
Max.
600
1
Unit
μA
Supply Current
Shutdown Supply Current
Under Voltage Lockout
Threshold
ISHDN
VEN=0V, VIN=5.5V
0.01
μA
VUVLO
Rising edge
2.27
V
Under Voltage Lockout
Hysteresis
VHUVLO
IFB
200
0.5
mV
nA
V
Feedback Bias Current
VFB=0.65V
-50
0.588 /
0.582
800
50
0.612 /
0.618
Feedback Voltage
VFB
IOUT=100mA
0.600
VIN=2.5V, VOUT=0.9V
VIN=3.6V, VOUT=1.2V
VIN=4.6V, VOUT=3.3V
VFB=0.55V
800
Maximum Output Current
IOUT(MAX)
mA
800
0.85
0.8
Switch Current Limit
Oscillator Frequency
ILIM
fOSC
1.15
1.2
A
1.4
0.6
MHz
VENL
VENH
IH
EN Pin Threshold
V
1.5
-0.1
-0.1
VEN=3.6V
VEN=0V
0.1
0.1
EN Pin Input Leakage Current
μA
IL
Internal PFET On Resistance
Internal NFET On Resistance
Maximum Duty Cycle
RDSONP
RDSONN
DMAX
ISW=100mA
ISW=-100mA
VFB=0.55V
VEN=0V to VIN
0.44
0.29
100
Ω
Ω
%
Soft-start Time
TSS
220
μS
IOUT=50mA
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
TOTSD
THYS
160
30
℃
℃
VER 1.3
3
ACE [ ACE TECHNOLOGY CO., LTD. ]
