LM5010MHX/NOPB Electronic IC Chips High Voltage Switching Regulator
electronic integrated circuit
,linear integrated circuits
LM5010 High Voltage 1A Step Down Switching Regulator
General 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.
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
Typical Applications
- High Efficiency Point-Of-Load (POL) Regulator
- Non-Isolated Telecommunications Buck Regulator
- Secondary High Voltage Post Regulator
- Automotive Systems
Package
- LLP-10 (4 mm x 4 mm)
- TSSOP-14EP
- Both Packages Have Exposed Thermal Pad For Improved Heat Dissipation
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
VIN to GND 76V
BST to GND 90V
SW to GND (Steady State) -1.5V
BST to VCC 76V
BST to SW 14V
VCC to GND 14V
SGND to RTN -0.3V to +0.3V
SS to RTN -0.3V to 4V
VIN to SW 76V
Current Out of ISEN See Text
All Other Inputs to GND -0.3 to 7V
ESD Rating (Note 2) Human Body Model 2kV
Storage Temperature Range -55˚C to +150˚C
Lead Temperature (Soldering 4 sec) (Note 4) 260˚C
Operating Ratings (Note 1)
VIN 8V to 75V
Operating Junction Temperature −40˚C to + 125˚C
Connection Diagrams
Stock Offer (Hot Sell)
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| STPS30L30CG | 8124 | ST | 13+ | TO-263 |
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| TOP244FN | 16330 | POWER | 15+ | TO-262 |
| TLE4270D | 8006 | 16+ | TO-252-5 | |
| RFD14N05LSM | 15566 | FAIRCHILD | 16+ | TO-252 |
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