LM34925MR/NOPB
Active7.5-100V WIDE VIN, 100MA INTEGRATED SECONDARY BIAS REGULATOR FOR ISOLATED DC/DC CONVERTERS
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LM34925MR/NOPB
Active7.5-100V WIDE VIN, 100MA INTEGRATED SECONDARY BIAS REGULATOR FOR ISOLATED DC/DC CONVERTERS
Technical Specifications
Parameters and characteristics for this part
| Specification | LM34925MR/NOPB |
|---|---|
| Current - Output | 100 mA |
| Frequency - Switching | Adj to 1MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive, Isolation Capable |
| Output Type | Adjustable |
| Package / Case | 8-PowerSOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 8-SO PowerPad |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 100 V |
| Voltage - Input (Min) [Min] | 7.5 V |
| Voltage - Output (Max) [Max] | 100 V |
| Voltage - Output (Min/Fixed) | 1.225 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 570 | $ 1.73 | |
| Texas Instruments | TUBE | 1 | $ 2.08 | |
| 100 | $ 1.82 | |||
| 250 | $ 1.28 | |||
| 1000 | $ 1.03 | |||
Description
General part information
LM34925 Series
The LM34925 regulator features all of the functions needed to implement a low cost, efficient, isolated bias regulator. This high voltage regulator contains two 100-V N-Channel MOSFET switches: a high-side buck switch and a low-side synchronous switch. The constant-on-time (COT) control scheme employed in the LM34925 device requires no loop compensation and provides excellent transient response. The regulator operates with an on-time that is inversely proportional to the input voltage. This feature allows the operating frequency to remain relatively constant. An intelligent peak current limit is implemented with integrated sense circuit. Other features include a programmable input under voltage comparator to inhibit operation during low-voltage conditions. Protection features include thermal shutdown and VCCundervoltage lockout (UVLO). The LM34925 device is offered in 8-pin WSON and8-pin SO PowerPAD plastic packages.
The LM34925 regulator features all of the functions needed to implement a low cost, efficient, isolated bias regulator. This high voltage regulator contains two 100-V N-Channel MOSFET switches: a high-side buck switch and a low-side synchronous switch. The constant-on-time (COT) control scheme employed in the LM34925 device requires no loop compensation and provides excellent transient response. The regulator operates with an on-time that is inversely proportional to the input voltage. This feature allows the operating frequency to remain relatively constant. An intelligent peak current limit is implemented with integrated sense circuit. Other features include a programmable input under voltage comparator to inhibit operation during low-voltage conditions. Protection features include thermal shutdown and VCCundervoltage lockout (UVLO). The LM34925 device is offered in 8-pin WSON and8-pin SO PowerPAD plastic packages.
Documents
Technical documentation and resources
