Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
IN
= +12V,
SHDN
= IN,
T
A
= 0°C to +85°C,
unless otherwise noted.)
PARAMETER
Input Voltage Range
Input Supply Current
Input Supply Current in Dropout
Input Shutdown Current
Input Undervoltage Lockout
Threshold
Output Voltage (Preset Mode)
Feedback Set Voltage
(Adjustable Mode)
OUT Bias Current
OUT Pin Maximum Voltage
FB Bias Current
FB Dual Mode™ Threshold Low
LX Switch Minimum Off-Time
LX Switch Maximum On-Time
t
OFF(MIN)
t
ON(MAX)
V
FB
= 1.3V
ILIM = ILIM2 = GND
V
IN
= 6V
LX Switch On-Resistance
R
LX
V
IN
= 4.5V
ILIM = GND, ILIM2 = IN
ILIM = IN, ILIM2 = GND
ILIM = ILIM2 = IN
ILIM = ILIM2 = GND
ILIM = GND, ILIM2 = IN
ILIM = IN, ILIM2 = GND
ILIM = ILIM2 = IN
ILIM = ILIM2 = GND
LX Current Limit
I
LX(PEAK)
ILIM = GND, ILIM2 = IN
ILIM = IN, ILIM2 = GND
ILIM = ILIM2 = IN
LX Zero-Crossing Threshold
Zero-Crossing Timeout
LX Switch Leakage Current
LX does not rise above the threshold
V
IN
= 24V,
LX = GND
T
A
= +25°C
T
A
= 0°C to +85°C
120
240
480
960
-75
30
1
10
I
FB
V
FB
= 1.3V
-25
50
0.22
8
100
0.42
10
1.6
0.8
0.4
0.4
1.9
1.0
0.5
0.5
150
300
600
1200
V
UVLO
V
OUT
V
FB
V
OUT
= 5.5V
SYMBOL
V
IN
I
IN
I
IN(DROP)
No load
No load
SHDN
= GND
V
IN
rising
V
IN
falling
FB = GND
3.6
3.5
4.80
1.212
1.65
CONDITIONS
MIN
4.5
15
50
3
4.0
3.9
5.00
1.25
3.5
TYP
MAX
24
28
70
7
4.4
4.3
5.20
1.288
6.25
5.5
+25
150
0.62
12
3.2
1.6
0.8
0.8
3.8
1.9
0.95
0.95
180
360
720
1440
+75
mV
µs
µA
mA
Ω
UNITS
V
µA
µA
µA
V
V
V
µA
V
nA
mV
µs
µs
Dual Mode is a trademark of Maxim Integrated Products, Inc.
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