ACT4910QW
Rev 1.0, 15-Sept-2017
INTERNAL BUCK REGULATOR
(VIN = 12V, TA = 25°C, unless otherwise specified)
PARAMETER
Operating Input Voltage Range
Typical Output Voltage
CONDITIONS
MIN
TYP
MAX
UNIT
4.2
36
V
V
V
3.3
Programmable Output Voltage Range
Standby Supply Current
Using external resistor divider
1.8
18
VOUT = 103%, Regulator Enabled, No Load, not switch-
ing
500
µA
Feedback Voltage
1.2
VNOM
VNOM
0.02
0.04
93
V
Output Voltage Accuracy
Output Voltage Accuracy
Line Regulation
VOUT = 12V, IOUT = 2A (PWM mode)
VOUT = 12V, IOUT = 1mA (PFM mode)
VOUT = 12V VIN = 5.5V to 12V, PWM Regulation
VOUT = 12V PWM Regulation
VOUT Rising
-1%
-1%
1%
1%
V
V
%/V
Load Regulation
%/A
Power Good Threshold
Power Good Hysteresis
Overvoltage Fault Threshold
Overvoltage Fault Hysteresis
90.5
107
95.5
113
%VNOM
%VNOM
%VNOM
%VNOM
VOUT Falling
3
VOUT Rising
110
2
VOUT Falling
Programmable Switching Frequency
Range
320
1130
kHz
A
BK_CLIM = 00
BK_CLIM = 01
BK_CLIM = 10
BK_CLIM = 11
5.0
6.0
7.0
9.0
Current Limit, Cycle-by-Cycle
At default BK_CLIM
At other set points
-10%
-15%
+15%
+10%
+15%
+30%
Current Limit, Cycle-by-Cycle Tolerance
Current Limit, Shutdown
High Side On-Resistance
Low Side On-Resistance
SW Leakage Current
Above BK_CLIM
+22.5%
45
ISW = -3A, VSTR = 12V
ISW = 3A, VSTR = 12V
VSTR = 12V, VSW = 0 or 5.5V
mΩ
mΩ
µA
28
1
Innovative PowerTM
ActiveSwitcherTM is a trademark of Active-Semi
www.active-semi.com
Copyright © 2017 Active-Semi, Inc.
9
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
