Packaging information
| Package | Pins VQFN-HR (RNV) | 18 |
| Operating temperature range (°C) -40 to 150 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the TPS54824
- Small 3.5-mm × 3.5-mm HotRod™ QFN package
- Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
- Peak current mode control with fast transient response
- 200-kHz to 1.6-MHz fixed switching frequency
- Synchronizes to external clock
- 0.6-V voltage reference ±0.85% over temperature
- 0.6-V to 12-V output voltage range
- Hiccup Current Limit
- Safe start-up into pre-biased output voltage
- Adjustable soft start and power sequencing
- Adjustable input undervoltage lockout
- 3-µA shutdown current
- Power good output monitor for undervoltage and overvoltage
- Output overvoltage protection
- Non-latch thermal shutdown protection
- –40°C to 150°C operating junction temperature
Description for the TPS54824
The TPS54824 is a full-featured 17-V (19-V maximum), 8-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.
The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.
The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.
A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.
A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.