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
(V
IN
= 12V, ILIM = FB = GND, V
BST
- V
LX
= 5V,
T
A
= 0°C to +85°C.
Typical values are at T
A
= +25°C, unless otherwise noted.)
PARAMETER
GENERAL
Operating Input Voltage Range
(Note 1)
Quiescent Supply Current
VL REGULATOR
Output Voltage
Power-Supply Rejection
Undervoltage Lockout Trip Level
Minimum Bypass Capacitance
DC-DC CONTROLLER
Output Voltage (Preset Mode)
Typical Output Voltage Range
(Adjustable Mode) (Note 2)
FB Set Voltage
(Adjustable Mode)
FB Dual Mode™ Threshold
FB Input Leakage Current
FB to COMP Transconductance
Current-Sense Amplifier Voltage
Gain
Current-Limit Threshold
(Internal Mode)
Current-Limit Threshold
(External Mode)
I
FB
g
m
A
LIM
V
VALLEY
V
VALLEY
V
FB
= 1.5V
FB = COMP, I
COMP
=
±5µA
V
IN
- V
LX
= 250mV
V
ILIM
= 5.0V
V
ILIM
= 2.5V
70
4.46
190
440
V
OUT
V
OUT
V
SET
FB = COMP
FB = GND
3.272
1.236
1.221
50
1.236
100
0.01
100
4.9
250
530
3.314
3.355
0.8 x V
IN
1.252
150
100
140
5.44
310
620
V
V
V
mV
nA
µS
V/V
mV
mV
VL
PSRR
V
UVLO
C
BYP(MIN)
6V < V
IN
< 28V, 0.1mA < I
LOAD
< 20mA
V
IN
= 6V to 28V
VL rising, 3% hysteresis (typ)
10mΩ < ESR < 500mΩ
3.2
3.5
1
4.75
5.00
5.25
3
3.8
V
%
V
µF
V
IN
V
FB
= 0, V
OUT
= 4V,
V
FB2
= V
FB3
= V
FB4
= 1.5V,
V
FB5
= -0.1V
MAX1864
MAX1865
4.5
1.0
1.4
28
2
mA
3
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
I
IN
Dual Mode is a trademark of Maxim Integrated Products, Inc.
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Embedded System
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