Texas Instruments TPS742 1.5A Low-Dropout (LDO) Linear Regulators
Texas Instruments TPS742 1.5A Low-Dropout (LDO) Linear Regulators provide an easy-to-use, robust power management design for various applications. Stress on the input power source is reduced by the user-programmable soft-start by reducing capacitive inrush current on start-up. The soft-start is monotonic and is well-suited for powering many different types of processors and ASICs. The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility permits the user to configure a solution that meets the sequencing requirements of DSPs, FPGAs, and other applications with special start-up requirements.
A precision reference and error amplifier delivers 1% accuracy over load, line, temperature, and process. The Texas Instruments TPS742 is stable with any type of capacitor with a 2.2µF or greater capacitance (new chip) and is fully specified from –40°C to 125°C.
Features
- Input voltage range of 0.8V to 5.5V
- Soft-start (SS) pin provides a linear start-up with a ramp time set by an external capacitor
- 1% accuracy over line, load, and temperature
- Adjustable output (0.8V to 3.6V)
- Ultra-Low Dropout
- 60mV (legacy chip) at 1.5A (typical)
- 55mV (new chip) at 1.5A (typical)
- Supports input voltages as low as 0.8V with external bias supply
- Stable with any output capacitor ≥ 2.2µF (new chip)
- Stable with any or no output capacitor (legacy chip)
- Excellent transient response
- Open-drain power-good
- Active high enable
Applications
- Network-attached storage - enterprise
- Rack servers
- Network interface cards (NIC)
- Merchant network and server PSU
Videos
Functional Block Diagrams
Development Tools
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