®
ACT4065A
Rev 0, 23-Apr-12
ABSOLUTE MAXIMUM RATINGSc
PARAMETER
IN Supply Voltage
VALUE
UNIT
V
-0.3 to 30
-1 to VIN + 1
SW - 0.3 to VSW + 7
-0.3 to 6
SW Voltage
V
BS Voltage
V
V
EN, FB, COMP Voltage
Continuous SW Current
Maximum Power Dissipation
V
Internally limited
0.76
A
W
105
°C/W
°C
°C
°C
Junction to Ambient Thermal Resistance (θJA
Operating Junction Temperature
Storage Temperature
)
-40 to 150
-55 to 150
300
Lead Temperature (Soldering, 10 sec)
c: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may
affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TJ = 25˚C, unless otherwise specified.)
PARAMETER
SYMBOL
VIN
TEST CONDITIONS
VOUT = 5V, ILOAD = 1A
VCOMP = 1.5V
MIN
6
TYP
MAX UNIT
Input Voltage
30
V
V
Feedback Voltage
VFB
0.792
0.808
0.22
8
0.824
High-Side Switch On Resistance
Low-Side Switch On Resistance
SW Leakage
RONH
RONL
Ω
Ω
µA
A
VEN = 0
1
10
High-Side Switch Current Limit
ILIM
Duty = 50%
3.5
COMP to Current Limit Transcon-
ductance
GCOMP
3.4
A/V
Error Amplifier Transconductance
Error Amplifier DC Gain
Switching Frequency
GEA
AVEA
fSW
ΔICOMP = ±10µA
650
4000
210
30
µA/V
V/V
kHz
kHz
%
190
240
Short Circuit Switching Frequency
Maximum Duty Cycle
V
FB = 0
VFB = 0.7V
FB = 1.0V
DMAX
88
Minimum Duty Cycle
V
0
%
Enable Threshold Voltage
Hysteresis = 0.1V
0.75
0.8
4
0.85
V
Pin pulled up to 4.5V typically
when left unconnected
Enable Pull-Up Current
µA
Supply Current in Shutdown
IC Supply Current in Operation
Thermal Shutdown Temperature
V
EN = 0
75
100
µA
mA
°C
VEN = 3V, VFB = 1.0V
0.75
155
Hysteresis = 10°C
Innovative PowerTM
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