LM34927SD/NOPB
Active7.5-100V WIDE VIN, 600MA INTEGRATED SECONDARY BIAS REGULATOR FOR ISOLATED DC/DC CONVERTERS
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LM34927SD/NOPB
Active7.5-100V WIDE VIN, 600MA INTEGRATED SECONDARY BIAS REGULATOR FOR ISOLATED DC/DC CONVERTERS
Technical Specifications
Parameters and characteristics for this part
| Specification | LM34927SD/NOPB |
|---|---|
| Current - Output | 600 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-WDFN Exposed Pad |
| Supplier Device Package | 8-WSON (4x4) |
| 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 |
LM34927 Series
7.5-100V Wide Vin, 600mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters
| Part | Board Type | Current - Output | Frequency - Switching | Outputs and Type | Voltage - Input [Min] | Voltage - Input [Max] | Utilized IC / Part | Supplied Contents | Main Purpose | Voltage - Output [Min] | Voltage - Output [Max] | Regulator Topology | Voltage - Input (Min) [Min] | Voltage - Output (Max) [Max] | Supplier Device Package | Mounting Type | Topology | Voltage - Output (Min/Fixed) | Function | Synchronous Rectifier | Output Type | Number of Outputs | Output Configuration | Voltage - Input (Max) [Max] | Package / Case [y] | Package / Case [x] | Package / Case | Frequency - Switching | Operating Temperature [Min] | Operating Temperature [Max] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | Fully Populated | 300 mA | 750 kHz | 1 1 | 20 VDC | 100 V | LM34927 | Board(s) | DC/DC Step Down | 9.5 V | 10 V | Buck | ||||||||||||||||||
 Texas Instruments | 600 mA | 7.5 V | 100 V | 8-SO PowerPad | Surface Mount | Buck | 1.225 V | Step-Down | Adjustable | 1 | Isolation Capable Positive | 100 V | 3.9 mm | 0.154 in | 8-PowerSOIC | Adj to 1MHz | -40 °C | 125 ¯C | ||||||||||||
 Texas Instruments | 600 mA | 7.5 V | 100 V | 8-SO PowerPad | Surface Mount | Buck | 1.225 V | Step-Down | Adjustable | 1 | Isolation Capable Positive | 100 V | 3.9 mm | 0.154 in | 8-PowerSOIC | Adj to 1MHz | -40 °C | 125 ¯C | ||||||||||||
Texas Instruments | 600 mA | 7.5 V | 100 V | 8-WSON (4x4) | Surface Mount | Buck | 1.225 V | Step-Down | Adjustable | 1 | Isolation Capable Positive | 100 V | 8-WDFN Exposed Pad | Adj to 1MHz | -40 °C | 125 ¯C | ||||||||||||||
 Texas Instruments | 600 mA | 7.5 V | 100 V | 8-WSON (4x4) | Surface Mount | Buck | 1.225 V | Step-Down | Adjustable | 1 | Isolation Capable Positive | 100 V | 8-WDFN Exposed Pad | Adj to 1MHz | -40 °C | 125 ¯C |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.71 | |
| 10 | $ 3.33 | |||
| 25 | $ 3.15 | |||
| 100 | $ 2.73 | |||
| 250 | $ 2.59 | |||
| 500 | $ 2.32 | |||
| Digi-Reel® | 1 | $ 3.71 | ||
| 10 | $ 3.33 | |||
| 25 | $ 3.15 | |||
| 100 | $ 2.73 | |||
| 250 | $ 2.59 | |||
| 500 | $ 2.32 | |||
| Tape & Reel (TR) | 1000 | $ 1.93 | ||
| 2000 | $ 1.83 | |||
| 3000 | $ 1.78 | |||
| 5000 | $ 1.73 | |||
| Texas Instruments | SMALL T&R | 1 | $ 2.80 | |
| 100 | $ 2.45 | |||
| 250 | $ 1.72 | |||
| 1000 | $ 1.39 | |||
Description
General part information
LM34927 Series
The LM34927 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 LM34927 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 undervoltage comparator to inhibit operation during low-voltage conditions. Protection features include thermal shutdown and VCCundervoltage lockout (UVLO). The LM34927 device is offered in WSON-8 and SO PowerPAD-8 plastic packages.
The LM34927 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 LM34927 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 undervoltage comparator to inhibit operation during low-voltage conditions. Protection features include thermal shutdown and VCCundervoltage lockout (UVLO). The LM34927 device is offered in WSON-8 and SO PowerPAD-8 plastic packages.
Documents
Technical documentation and resources