TPS74533PQWDRBRQ1

TPS745-Q1 is a 500mA ultra-low dropout regulator (LDO) with a power-good indicator. The device is available in a small 6-pin 2mm×2mm WSON package and a small 8-pin 3mm×3mm VSON package, both with wettable flanks for optical inspection. The TPS745-Q1 features low quiescent current consumption and provides fast line and load transient performance. The TPS745-Q1 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. Fixed output voltage options are also available to power common voltage rails. The TPS745-Q1 includes a power-good (PG) output that monitors the feedback pin voltage to indicate output voltage status. The EN input and PG output can be used to sequence multiple power supplies in a system. The TPS745-Q1 remains stable when used with small ceramic output capacitors, supporting a compact overall solution. The precision bandgap and error amplifier provide high accuracy — ±0.85% (maximum) at 25°C and ±1.5% (maximum) over the full operating temperature range. The device integrates thermal shutdown, current limiting, and UVLO protection. The TPS745-Q1 features internal foldback current limiting to help reduce power dissipation during short-circuit events.

Applications

• Automotive head unit
• Front and rear cameras
• Automotive instrument cluster display
• Telematics control unit
• Mid-range and short-range radar

Key features

• AEC-Q100 qualified for automotive applications: Temperature Grade 1: -40°C to +125°C, TA device junction temperature: -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: 0.65V to 5.0V, Adjustable: 0.55V to 5.5V
• High PSRR: 45dB at 100kHz
• Output accuracy: ±0.85% (25°C), ±1.5% (maximum)
• Power-good output options: open-drain and push-pull
• Ultra-low dropout: 160mV (maximum) at 500mA (3.3V₀₊ₜ)
• Stable with 1µF or larger capacitor
• Low I₀: 25µA (typical), 1.5µA (shutdown)
• Active output discharge
• Functional Safety-capable
• Documentation available for functional safety system design
• Low thermal resistance: DRV (6-pin WSON), R₀JA = 80.3°C/W; DRB (8-pin VSON), R₀JA = 55.5°C/W