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HM1483

H&M semi
Part Number HM1483
Manufacturer H&M semi
Description 3.1A Monolithic Step-Down Switching Regulator
Published May 5, 2021
Detailed Description HM1483 30V, 3.1A Monolithic Step-Down Switching Regulator in TSOT23-8 1 Features  3.0A continuous output current capab...
Datasheet PDF File HM1483 PDF File

HM1483
HM1483

Overview
HM1483 30V, 3.
1A Monolithic Step-Down Switching Regulator in TSOT23-8 1 Features  3.
0A continuous output current capability  6.
5V to 30Vwide operating input range with input Over Voltage Protection  Integrated 36V, 65mΩ high side and 36V, 45mΩ low side power MOSFET switches  Up to 95% efficiency  Programmable Soft-Start limits the inrush current at turn-on  Stable with Low ESR Ceramic Output Capacitors  Fixed 300KHz Switching Frequency  Input Under-Voltage Lockout.
 Input over-voltage protection to protect device from working in high voltage and high current condition  Output short protection with both high side current limit and low side current limit to protect the device in hard short  Output Over-Voltage Protection  Over-Temperature Protection  Small size Flip-Chip TSOT23-8 Package, best for narrow space application.
More reliable and less parasitic voltage spike comparing with bonding wire package 2 Applications  Set-Top-Box  Televisions  DVD, LCD Displays  OLPC, Netbook  Datacom, XDSL modems  Distributed Power Systems  USB car charger  Portable charging device  General purpose 3 Description HM1483 is a monolithic 30V, 3.
0A step-down switch regulator.
HM1483 integrates a 36V 65mΩ high side and a 36V, 45mΩ low side MOSFETs to provide 3.
0A continuous load current over a 6.
5V to 36V wide operating input voltage with 30V input over voltage protection.
Peak current mode control provides fast transient responses and cycle-by-cycle current limiting.
Programmable soft-start prevents inrush current at power-up.
Flip-chip TSOT23-8 package makes the part best fit narrow space applications 4 Typical Application Schematic VIN/6.
5V-30V C1 100uF/50V C2 0.
1uF/50V 8 V2IN 2 8EN 6 1 BST C5 100nF/25V SW3 7 53 FB +0 R4 4 COMP 300K 1% 7 C7 100pF/10V 4 GND 1 65 SS Fig.
1 Schematic L1 22uH R1 46K4 1% R2 10K 1% Vout/5V C4 0.
1uF C3 100uF C6 47pF C8 100nF/25V * C6 47pF is optional Fig.
2 Efficiency curve 1 of 14 5 Pin Configuration a...


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