Gehäuseinformationen
| Gehäuse | Pins VSON (DRC) | 10 |
| Betriebstemperaturbereich (°C) -40 to 150 |
| Gehäusemenge | Träger 250 | SMALL T&R |
Merkmale von LM5165
- Wide input voltage range of 3 V to 65 V
- 10.5-µA no-load quiescent current
- –40°C to 150°C junction temperature range
- Fixed (3.3 V and 5 V) or adjustable output voltages
- Meets EN55022 / CISPR 22 EMI standards
- Integrated 2-Ω PMOS buck switch
- Supports 100% duty cycle for low dropout
- Integrated 1-Ω NMOS synchronous rectifier
- Eliminates external rectifier diode
- Programmable current limit setpoint (four levels)
- Selectable PFM or COT mode operation
- 1.223-V ±1% internal voltage reference
- 900-µs internal or programmable soft start
- Active slew rate control for low EMI
- Diode emulation mode and pulse skipping for ultra-high light-load efficiency performance
- Monotonic start-up into prebiased output
- No loop compensation or bootstrap components
- Precision enable and input UVLO with hysteresis
- Pin-to-pin compatible with the LM5166
- Thermal shutdown protection with hysteresis
- 10-pin, 3-mm × 3-mm VSON package
- Use TPSM265R1 module for faster time to market
- Create a custom regulator design using WEBENCH Power Designer
Beschreibung von LM5165
The LM5165 device is a compact, easy-to-use, 3-V to 65-V, ultra-low IQ synchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 150-mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V or at an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse Frequency Modulation (PFM) mode is selected for optimal light-load efficiency or Constant On-Time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.
The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular output current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5165 buck converter is available in a 10-pin, 3-mm × 3-mm, thermally- enhanced VSON-10 package with 0.5-mm pin pitch. The LM5165 and LM5165X is also available in the VSSOP-10 package.