Evaluation Module Texas Instruments TPS7H1201HTEVM
The TPS7H1201-HT is a Ultra Low Dropout (LDO) linear regulator that uses a PMOS pass element configuration.
Detailed Description
The techniques employed allow for very low dropout. With an improved circuitry the TPS7H1201 operates under wide range of input voltage, from 1.5 V to 7 V which enables 6-V IN to 5-V OUT or 1.5-V IN to 1.2-V OUT voltage conversions for typical applications, while offering excellent PSRR.
The TPS7H1201 is ideally suited for high reliability applications. It features a very precise and programmable fold back current limit implementation with a very wide adjustment range.
To support complex requirements of FPGAs or DSPs, the TPS7H1201 provides programmable SoftStart and PowerGood output for easy power sequencing.
TPS7H1201 is available in a 16-pin ceramic flatpack package (HKS).
TPS7H1201HT uses TI’s proprietary process to achieve low noise, high PSRR combined with high thermal performance in a 16-pin ceramic flatpack package (HKS).
A number of features are incorporated in the design to provide high reliability and system flexibility. Current foldback, overload protection are incorporated in the design to make it viable for harsh environments.
TPS7H1201HTEVM also incorporates current limit protection. A resistor connected from Programmable Current limit (PCL) pin to ground sets the current limit activation point. When current limit set point is reached, output voltage will drop and output current will be maintained at the current limit set point.
A resistor connected from the CS (current sense) pin to VIN indicates voltage proportional to the output current, this feature can be used by the system to get voltage proportional to LDO output current.
Features
- Current sharing / Parallel operation 1A output current
- Wide Vin Range 1.5V – 7V
- TPS7H1201-HT Low Dropout Voltage 100 mV at 0.5 A (200°C) 30 mV at 0.5 A (25°C)
- Stable With Ceramic Output Capacitor
- ±2% Accuracy(2) (-55°C to 125°C)
- ±4.2% Accuracy(2) (-55°C to 210°C)
- Low Noise: (17×Vout) μV RMS
- PSRR: Over 55 dB at 1 kHz
- Programmable OCP ( over current protection) with current reading and foldback
- PowerGood Output
