LM34919CQSDX/NOPB
ActiveAUTOMOTIVE 4.5-50V WIDE VIN 600MA 2.6MHZ ULTRA-SMALL CONSTANT ON-TIME NON-SYNCHRONOUS BUCK REGULATOR
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LM34919CQSDX/NOPB
ActiveAUTOMOTIVE 4.5-50V WIDE VIN 600MA 2.6MHZ ULTRA-SMALL CONSTANT ON-TIME NON-SYNCHRONOUS BUCK REGULATOR
Technical Specifications
Parameters and characteristics for this part
| Specification | LM34919CQSDX/NOPB |
|---|---|
| Current - Output | 600 mA |
| Frequency - Switching | 2.6 MHz |
| Function | Step-Down |
| Grade | Automotive |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 12-WFDFN Exposed Pad |
| Qualification | AEC-Q100 |
| Supplier Device Package | 12-WSON (4x4) |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 50 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) [Max] | 45 V |
| Voltage - Output (Min/Fixed) | 2.5 V |
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 | $ 2.90 | |
| 10 | $ 2.61 | |||
| 25 | $ 2.46 | |||
| 100 | $ 2.10 | |||
| 250 | $ 1.97 | |||
| 500 | $ 1.72 | |||
| 1000 | $ 1.43 | |||
| Digi-Reel® | 1 | $ 2.90 | ||
| 10 | $ 2.61 | |||
| 25 | $ 2.46 | |||
| 100 | $ 2.10 | |||
| 250 | $ 1.97 | |||
| 500 | $ 1.72 | |||
| 1000 | $ 1.43 | |||
| Tape & Reel (TR) | 4500 | $ 1.33 | ||
| Texas Instruments | LARGE T&R | 1 | $ 1.97 | |
| 100 | $ 1.72 | |||
| 250 | $ 1.21 | |||
| 1000 | $ 0.97 | |||
Description
General part information
LM34919C-Q1 Series
The LM34919C Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying 0.6 A to the load. This buck regulator contains an N-Channel Buck Switch and is available in DSBGA and WSON packages. The constant on-time feedback 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 results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: Power Good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.
The LM34919C Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying 0.6 A to the load. This buck regulator contains an N-Channel Buck Switch and is available in DSBGA and WSON packages. The constant on-time feedback 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 results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: Power Good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.
Documents
Technical documentation and resources
