L3751PUR
DC/DC Controller, Synchronous Buck, 6 to 75V Supply, 1MHz, 1 Output, QFN-EP-20
| Manufacturer | STMICROELECTRONICS |
|---|---|
| Manufacturer Part No | L3751PURCopy |
| Manufacturer Standard Lead Time | 17 weeks |
| Newark Part No. | Re-Reel57AK9997RL Cut Tape57AK9997 |
| Your Part Number | |
| Technical Datasheet |
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| Packaging Type | Quantity | Unit Price: | Total |
|---|---|---|---|
| Cut Tape | 1 | $2.990 | $2.99 |
| Total Price | $2.99 | ||
| Quantity | Price |
|---|---|
| 1+ | $2.990 |
| 50+ | $2.330 |
| 100+ | $2.180 |
| 250+ | $2.110 |
| 500+ | $2.080 |
| 1000+ | $2.020 |
| 2500+ | $2.010 |
| 5000+ | $2.000 |
Product Information
| Manufacturer | STMICROELECTRONICS |
|---|---|
| Manufacturer Part No | L3751PURCopy |
| Manufacturer Standard Lead Time | 17 weeks |
| Newark Part No. | Re-Reel57AK9997RL Cut Tape57AK9997 |
| Technical Datasheet | |
| Control Mode | Voltage Mode Control |
| Supply Voltage Min | 6V |
| Supply Voltage Max | 75V |
| No. of Outputs | 1Outputs |
| Duty Cycle (%) | 99% |
| IC Case / Package | QFN-EP |
| No. of Pins | 20Pins |
| Switching Frequency | 1MHz |
| Topology | Synchronous Buck (Step Down) |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 150°C |
| Product Range | - |
| Qualification | - |
| SVHC | No SVHC (25-Jun-2025) |
| Automotive Qualification Standard | - |
| Controller IC Case Style | QFN-EP |
| No. of Outputs | 1 Output |
Product Overview
L3751PUR is a wide 6V to 75V input voltage synchronous buck controller. It features extreme voltage conversion ratio over switching frequency range (100KHz - 1MHz) thanks to 40nsec minimum conduction time. The diode emulation (DEM) implements pulse skipping mode that maximizes the efficiency at light-load giving controlled output voltage ripple. The forced PWM (FPWM) over the load range makes the switching frequency constant and minimizes the output voltage ripple. The power good open collector output validates the regulated output voltage for monitoring and it is useful to implement output voltage sequencing for digital ICs during the power-up phase. An embedded gate driver minimizes the number of external components and it is designed for standard VTH MOSFET. Embedded protections–output overcurrent, input voltage UVLO feature controlled and safe operation for critical environments in telecom, networking and industrial applications.
- Adjustable output voltage from 0.8V to 60V
- 40nsec minimum on-time for extreme duty ratio, low dropout operation during line transient
- Adjustable soft-start/input voltage tracking, pulse skipping or forced PWM operation at light load
- Synchronization, adjustable precision enable, power good open collector output validates VOUT
- 7.5V gate drivers for standard VTH MOSFETs, constant current protection with hiccup mode
- Precision or lossless programmable current sensing, improved line transient response
- Input voltage undervoltage lockout
- Internal voltage monitoring, thermal protection
- Operating junction temperature range from -40°C to 150°C
- Device is available in a QFN 20 leads package with wettable flanks
Technical Specifications
| Control Mode | Voltage Mode Control |
|---|---|
| Supply Voltage Max | 75V |
| Duty Cycle (%) | 99% |
| No. of Pins | 20Pins |
| Topology | Synchronous Buck (Step Down) |
| Operating Temperature Max | 150°C |
| Qualification | - |
| Automotive Qualification Standard | - |
| No. of Outputs | 1 Output |
| Supply Voltage Min | 6V |
|---|---|
| No. of Outputs | 1Outputs |
| IC Case / Package | QFN-EP |
| Switching Frequency | 1MHz |
| Operating Temperature Min | -40°C |
| Product Range | - |
| SVHC | No SVHC (25-Jun-2025) |
| Controller IC Case Style | QFN-EP |
Technical Docs (2)
Legislation and Environmental
| US ECCN: | EAR99 |
|---|---|
| EU ECCN: | Unknown |
| RoHS Compliant: | Yes RoHS |
| RoHS Phthalates Compliant: | Yes RoHS |
| SVHC: | No SVHC (25-Jun-2025) |
| Download Product Compliance Certificate | Product Compliance Certificate |