All Output Voltage Versions
Electrical Characteristics
Limits appearing in bold type face apply over the entire junction temperature range of operation, −40˚C to 125˚C. Specifica-
tions appearing in normal type apply for TA = TJ = 25˚C. Unless otherwise specified VIN=12V for the 3.3V, 5V and Adjustable
versions and VIN=24V for the 12V version.
Symbol
Parameter
Conditions
Typ
Min
Max
Units
DEVICE PARAMETERS
IQ
Quiescent
Current
VFEEDBACK = 8V
4.2
6
mA
For 3.3V, 5.0V, and ADJ Versions
VFEEDBACK = 15V
For 12V Versions
ISTBY
Standby
ON/OFF Pin = 0V
Quiescent
Current
50
100/150
5.25/5.4
µA
A
ICL
IL
Current Limit
Output Leakage
Current
4.5
3.8/3.6
VIN = 40V, ON/OFF Pin = 0V
VSWITCH = 0V
µA
200
15
mA
VSWITCH = −1V
16
RDS(ON) Switch
On-Resistance
ISWITCH = 3A
0.15
0.17/0.29
Ω
fO
Oscillator
Measured at Switch Pin
260
225
280
kHz
Frequency
Duty Cycle
D
Maximum Duty Cycle
Minimum Duty Cycle
VFEEDBACK = 1.3V
ADJ Version Only
91
0
%
%
IBIAS
Feedback Bias
Current
85
nA
VON/OFF ON/OFF
Threshold
1.4
0.8
2.0
45
V
Voltage
ION/OFF
θJA
ON/OFF Input
ON/OFF Input = 0V
20
65
µA
Current
Thermal
Resistance
T Package, Junction to Ambient
(Note 5)
θJA
T Package, Junction to Ambient
(Note 6)
45
θJC
θJA
T Package, Junction to Case
S Package, Junction to Ambient
(Note 7)
2
56
˚C/W
θJA
θJA
S Package, Junction to Ambient
(Note 8)
35
26
S Package, Junction to Ambient
(Note 9)
θJC
θJA
S Package, Junction to Case
SD Package, Junction to Ambient
(Note 10)
2
++
55
˚C/W
θJA
SD Package, Junction to Ambient
(Note 11)
29
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