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LM5010 High Voltage 1A Step Down Switching Regulator


source: | post time:2010-05-02

Part Number(s)
(NSID)
Top View Type Pins MSL Rating Peak Reflow RoHS
Status
CAD Symbols Models Package
Marking
Format
LM5010MH/NOPB
LM5010MH
TSSOP EXP PAD 14 1
1
260
260
Detail Download N/A
NSUZXYTT
L5010
MH
LM5010MHX/NOPB
TSSOP EXP PAD 14 1 260 Detail Download N/A
NSUZXYTT
L5010
MH
LM5010SD/NOPB
LM5010SD
LLP 10 1
1
260
260
Detail Download N/A
NS
UZXYTT
L00057B
LM5010SDX/NOPB
LM5010SDX
LLP 10 1
1
260
260
Detail Download N/A
NS
UZXYTT
L00057B

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Description

The LM5010 Step Down Switching Regulator features all the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying in excess of 1A load current. This high voltage regulator contains an N-Channel Buck Switch, and is available in thermally enhanced LLP-10 and TSSOP-14EP packages. The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit detection is set at 1.25A. Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.

Applications

High Efficiency Point-Of-Load (POL) Regulator
Non-Isolated Telecommunications Buck Regulator
Secondary High Voltage Post Regulator
Automotive Systems

Features
Input Voltage Range: 8V to 75V
Valley Current Limit At 1.25A
Switching Frequency Can Exceed 1 MHz
Integrated N-Channel Buck Switch
Integrated Startup Regulator
No Loop Compensation Required
Ultra-Fast Transient Response
Operating Frequency Remains Constant With Load and Line Variations
Maximum Duty Cycle Limited During Startup
Adjustable Output Voltage
Precision 2.5V Feedback Reference
Thermal shutdown

Diagrams

Typical Application
click for larger image


 

 

 

Block Diagram
*click for larger image


 


Typical Performance
*click for larger image


 


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