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
Note 1:
Thermal properties are specified with product mounted on PC board with 1in
2
of copper area and still air.
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
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V
IN
= 12V,
SHDN
= IN,
T
A
= 0°C to +85°C.
Typical values are at T
A
= +25°C,
unless otherwise noted.)
PARAMETER
Input Supply Range
Input Undervoltage Lockout
Threshold
Input Supply Current
Input Supply Current in Dropout
Input Shutdown Current
SYMBOL
V
IN
V
UVLO
I
IN
I
IN(DROP)
V
IN
= 5V
SHDN
= GND
FB = GND,
I
LOAD
= 0 to 125mA
(MAX1836) or
250mA (MAX1837)
(Note 2)
MAX183_EUT50,
MAX183_ETT50
MAX183_EUT33,
MAX183_ETT33
4.80
3.168
1.25
1.200
V
OUT
= 5V
I
FB
Threshold
t
OFF(MIN)
t
ON(MAX)
R
LX
I
LIM
V
FB
= 1.3V
V
IN
= 6V
MAX1836
MAX1837
250
500
-75
V
FB
= 0 or 1.25V, T
A
= +25°C
V
FB
rising or falling
-25
50
0.2
7
100
0.4
10
1.1
312
625
1.25
2.5
V
IN
rising
V
IN
falling
CONDITIONS
MIN
4.5
3.55
3.45
4.0
3.9
12
18
3
5.00
3.30
7
5.20
V
3.432
V
IN
1.300
7.4
+25
150
0.6
13
2
450
850
+75
V
V
µA
nA
mV
µs
µs
Ω
mA
mV
TYP
MAX
24
4.4
4.3
25
UNITS
V
V
µA
µA
µA
Output Voltage (Preset Mode)
V
OUT
Output Voltage Range
(Adjustable Mode)
Feedback Set Voltage
(Adjustable Mode)
OUT Bias Current
FB Bias Current
FB Dual Mode
TM
V
OUT
V
FB
LX Switch Minimum Off-Time
LX Switch Maximum On-Time
LX Switch On-Resistance
LX Current Limit
LX Zero-Crossing Threshold
Dual Mode is a trademark of Maxim Integrated Products, Inc.
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