Packaging information
| Package | Pins HSOIC (DDA) | 8 |
| Operating temperature range (°C) -40 to 150 |
| Package qty | Carrier 2,500 | LARGE T&R |
Features for the LM5164
- Designed for reliable and rugged applications
- Wide input voltage range of 6 V to 100 V
- Junction temperature range: –40°C to +150°C
- Fixed 3-ms internal soft-start timer
- Peak and valley current-limit protection
- Input UVLO and thermal shutdown protection
- Optimized for ultra-low EMI requirements
- Meets CISPR 25 class 5 standard
- Suited for scalable Industrial power supplies and battery packs
- Low minimum on- and off-times of 50 ns
- Adjustable switching frequency up to 1 MHz
- Diode emulation for high light-load efficiency
- 10.5-µA no-load input quiescent current
- 3-µA shutdown quiescent current
- Integration reduces solution size and cost
- COT mode control architecture
- Integrated 0.725-Ω NFET buck switch
- Integrated 0.34-Ω NFET synchronous rectifier eliminates external Schottky diode
- 1.2-V internal voltage reference
- No loop compensation components
- Internal VCC bias regulator and boot diode
- Open-drain power good indicator
- 8-Pin SOIC package with PowerPAD™
- Create a custom regulator design using WEBENCH power designer
Description for the LM5164
The LM5164 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on-time of 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5164 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for wide input supply range industrial and high cell count battery pack applications.
With integrated high-side and low-side power MOSFETs, the LM5164 delivers up to 1-A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. Additional features of the LM5164 include ultra-low I Q and diode emulation mode operation for high light-load efficiency, innovative peak and valley overcurrent protection, integrated VCC bias supply and bootstrap diode, precision enable and input UVLO, and thermal shutdown protection with automatic recovery. An open-drain PGOOD indicator provides sequencing, fault reporting, and output voltage monitoring. The LM5164 is available in a thermally-enhanced, 8-pin SO PowerPAD™ package. Its 1.27-mm pin pitch provides adequate spacing for high-voltage applications.
The LM5164 is available in a thermally-enhanced, 8-pin SO PowerPAD™ package. Its 1.27-mm pin pitch provides adequate spacing for high-voltage applications.