MP1482 View Datasheet(PDF) - KEXIN Industrial
Part Name
Description
Manufacturer
MP1482 Datasheet PDF : 4 Pages
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SMD Type
Integrate Circuit
2A, 18V Synchronous Rectified Step-Down Converter
MP1482
■ Features
• 2A Output Current
• Wide 4.75V to 18V Operating Input Range
• Integrated 130mΩ Power MOSFET Switches
• Output Adjustable from 0.923V to 15V
• Up to 93% Efficiency
• Programmable Soft-Start
• Stable with Low ESR Ceramic Output Capacitors
• Fixed 340KHz Frequency
• Cycle-by-Cycle Over Current Protection
• Input Under Voltage Lockout
SOP-8
■ Functional Block Diagram
+
FB 5
1.1V --
+
0.3V --
OVP
RAMP
OSCILLATOR
CLK
100/340KHz
--
SS 8
+
0.923V +
ERROR
AMPLIFIER
CURRENT
SENSE
AMPLIFIER +
--
--
SQ
RQ
+
CURRENT
COMPARATOR
2 IN
5V
1 BS
3 SW
BS 1
IN 2
SW 3
GND 4
COMP 6
EN 7
2.5V +
--
EN OK
LOCKOUT
COMPARATOR
+
1.5V --
SHUTDOWN
COMPARATOR
1.2V
4 GND
OVP
EN
IN < 4.10V
IN
INTERNAL
REGULATORS
5V
■ Absolute Maximum Ratings Ta = 25℃
Parameter
Input Voltage
Switch Voltage
Boot Strap Voltage
All Other Pins
Power Dissipation
Thermal Resistance
Junction Temperature
Storage Temperature
Lead Temperature
Symbol
Vin
VSW
VBS
PD
RθJA
Tj
Tstg
TL
Rating
-0.3 to 20
21
VSW-0.3V to VSW+6
-0.3 to 6V
1300
90
150
-65 to 150
260
■ Recommended Operating Conditions
Input Voltage
Vin
Output Voltage
Vout
Operating Temperature
TA
4.75 to 18
0.923 to 15
-40 to 85
8 SS
7 EN
6 COMP
5 FB
Unit
V
V
V
V
mW
℃/W
℃
℃
℃
V
V
℃
1
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