®
ACT4065A
Rev 0, 23-Apr-12
PARAMETER
VALUE
-0.3 to 30
-1 to V
IN
+ 1
V
SW
- 0.3 to V
SW
+ 7
-0.3 to 6
Internally limited
0.76
105
-40 to 150
-55 to 150
300
ABSOLUTE MAXIMUM RATINGS
UNIT
V
V
V
V
A
W
°C/W
°C
°C
°C
IN Supply Voltage
SW Voltage
BS Voltage
EN, FB, COMP Voltage
Continuous SW Current
Maximum Power Dissipation
Junction to Ambient Thermal Resistance (θ
JA
)
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
: 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
(V
IN
= 12V, T
J
= 25˚C, unless otherwise specified.)
PARAMETER
Input Voltage
Feedback Voltage
High-Side Switch On Resistance
Low-Side Switch On Resistance
SW Leakage
High-Side Switch Current Limit
COMP to Current Limit Transcon-
ductance
Error Amplifier Transconductance
Error Amplifier DC Gain
Switching Frequency
Short Circuit Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Enable Threshold Voltage
Enable Pull-Up Current
Supply Current in Shutdown
IC Supply Current in Operation
Thermal Shutdown Temperature
SYMBOL
V
IN
V
FB
R
ONH
R
ONL
TEST CONDITIONS
V
OUT
= 5V, I
LOAD
= 1A
V
COMP
= 1.5V
MIN
6
0.792
TYP
0.808
0.22
8
MAX
30
0.824
UNIT
V
V
Ω
Ω
V
EN
= 0
I
LIM
G
COMP
G
EA
A
VEA
f
SW
V
FB
= 0
D
MAX
V
FB
= 0.7V
V
FB
= 1.0V
Hysteresis = 0.1V
Pin pulled up to 4.5V typically
when left unconnected
V
EN
= 0
V
EN
= 3V, V
FB
= 1.0V
Hysteresis = 10°C
0.75
190
ΔI
COMP
= ±10µA
Duty = 50%
1
3.5
3.4
650
4000
210
30
88
10
µA
A
A/V
µA/V
V/V
240
kHz
kHz
%
0
0.8
4
75
0.75
155
100
0.85
%
V
µA
µA
mA
°C
Innovative Power
TM
-3-
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Copyright © 2012 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
