TPS74615PQWDRBRQ1

The TPS746-Q1 is a 1A ultra-low dropout regulator (LDO) with a power-good indicator. It comes in a small 6-pin 2mm×2mm WSON package with wettable flanks and a small 8-pin 3mm×3mm VSON package, facilitating optical inspection. It features low quiescent current consumption and offers fast line and load transient performance. It supports an input voltage range of 1.5V to 6.0V and an externally adjustable output voltage range of 0.55V to 5.5V, making it a flexible post-regulator device. It also provides fixed output voltages to power common voltage rails. It has a power-good (PG) output that monitors the feedback pin voltage to indicate the output voltage status. The EN input and PG output can be used to sequence multiple power supplies in a system. It remains stable when used with small ceramic output capacitors that support a small overall solution size. The precision bandgap and error amplifier have high-precision characteristics, providing an accuracy of ±0.85% (maximum) at 25°C and ±1.5% (maximum) over the entire operating temperature range. It includes integrated thermal shutdown, current limit, and under-voltage lockout (UVLO) functions. It has an internal foldback current limit, which helps reduce heat dissipation during short-circuit events.

Applications

• Automotive head units
• Front and rear cameras
• Automotive instrument cluster displays
• Telematics control units
• Medium-range and short-range radar

Key features

• AEC-Q100 qualified for automotive applications: Temperature Grade 1: -40°C to +125°C, TA device operating junction temperature range: -40°C to +150°C
• Package: 2mm×2mm wettable flank WSON; 3mm×3mm wettable flank VSON
• Input voltage range: 1.5V to 6.0V
• Output voltage range: Fixed voltage: 0.65V to 5.0V; Adjustable voltage: 0.55V to 5.5V
• High PSRR: 38dB at 100kHz
• Output accuracy: ±0.85% typical, ±1.5% maximum
• Power-good output options: open-drain or push-pull
• Ultra-low dropout: 265mV (maximum) at 1A (3.3V_OUT)
• Stable with 1µF or larger output capacitor
• Low I_Q: 25µA (typical)
• Active output discharge
• Functional Safety compliant
• Documentation available for Functional Safety system design
• Low thermal resistance: DRV (6-pin WSON), R_θJA = 80.3°C/W; DRB (8-pin VSON), R_θJA = 55.5°C/W