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 LM5169-Q1
- AEC-Q100-qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C, ambient temperature range
- Designed for reliability in rugged applications
- Wide input voltage range of 6 V to 120 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
- Suited for scalable automotive HEV/EV power
supplies
- Low minimum on and off times of 50 ns
- Adjustable switching frequency up to 1 MHz
- Diode emulation for high light-load efficiency
- Auto mode with low-quiescent current (< 10 µA)
- FPWM for fly-buck converter capability
- 3-µA shutdown quiescent current
- Pin-to-pin compatible with LM5164-Q1, LM5163-Q1, LM5017, LM5013-Q1and LM34927
- Integration reduces solution size
and cost
- COT mode control architecture
- Integrated 1.9-Ω NFET buck switch
- Integrated 0.71-Ω NFET synchronous rectifier
- 1.2-V internal voltage reference
- No loop compensation components
- Internal VCC bias regulator and boot diode
- Open-drain power-good indicator
- SOIC PowerPAD™ integrated circuit package
Description for the LM5169-Q1
The LM5169 -Q1 and LM5168 -Q1 synchronous buck converters are 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 LM516x -Q1 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 LM5169 -Q1 delivers up to 0.65-A of output current and the LM5168 -Q1 delivers up to 0.3-A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LM516x -Q1 is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated fly-buck converter applications. Auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.