Overview
The TPS71718DCKT is a low-dropout (LDO), low-power linear voltage regulator produced by Texas Instruments. This device is part of the TPS717 family, which is known for its high power-supply rejection ratio (PSRR) and low ground current. The TPS71718DCKT is designed for use in ultra-small form factor portable equipment, such as wireless handsets, PDAs, and smartphones. It utilizes an advanced BiCMOS process and a PMOS pass device to achieve fast start-up, low noise, excellent transient response, and high PSRR performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 to 6.5 | V |
| Output Voltage Range | 0.9 to 5 (Fixed), 0.9 to 6.2 (Adjustable) | V |
| Output Current | 150 | mA |
| Dropout Voltage | 170 mV (typical at 150 mA) | mV |
| PSRR | 70 dB at 1 kHz, 67 dB at 100 kHz, 45 dB at 1 MHz | dB |
| Noise Voltage | 30 μVRMS (typical, 100 Hz to 100 kHz) | μVRMS |
| Package Type | SOT-SC70 (DCK), WSON-6 | |
| Operating Temperature Range | -40 to 125 | °C |
| Pin Count | 5 |
Key Features
- Ultra-high power-supply rejection ratio (PSRR): 70 dB at 1 kHz, 67 dB at 100 kHz, and 45 dB at 1 MHz.
- Excellent load and line transient response.
- Very low dropout voltage: 170 mV typical at 150 mA.
- Low noise: 30 μVRMS typical (100 Hz to 100 kHz).
- Available in multiple output versions: fixed output from 0.9 V to 5 V and adjustable output from 0.9 V to 6.2 V.
- Small package options: 5-pin SOT-SC70, 2-mm × 2-mm WSON-6, and 1.5-mm × 1.5-mm WSON-6.
- Stable with a 1-μF ceramic output capacitor.
- Precision voltage reference and feedback loop for high accuracy.
Applications
- Camera sensor power.
- Mobile phone handsets.
- PDAs and smartphones.
- Wireless LAN and Bluetooth® devices.
Q & A
- What is the input voltage range of the TPS71718DCKT? The input voltage range is from 2.5 V to 6.5 V.
- What are the available output voltage ranges for the TPS717 family? The output voltage ranges are from 0.9 V to 5 V for fixed output and from 0.9 V to 6.2 V for adjustable output.
- What is the typical dropout voltage of the TPS71718DCKT at 150 mA? The typical dropout voltage is 170 mV at 150 mA.
- What is the PSRR of the TPS71718DCKT at different frequencies? The PSRR is 70 dB at 1 kHz, 67 dB at 100 kHz, and 45 dB at 1 MHz.
- What is the noise voltage of the TPS71718DCKT? The noise voltage is 30 μVRMS typical (100 Hz to 100 kHz).
- In what packages is the TPS71718DCKT available? It is available in 5-pin SOT-SC70, 2-mm × 2-mm WSON-6, and 1.5-mm × 1.5-mm WSON-6 packages.
- What is the operating temperature range of the TPS71718DCKT? The operating temperature range is from -40°C to 125°C.
- What is the typical ground current of the TPS71718DCKT? The typical ground current is 45 μA.
- Is the TPS71718DCKT stable with a ceramic output capacitor? Yes, it is stable with a 1-μF ceramic output capacitor.
- What are some common applications of the TPS71718DCKT? Common applications include camera sensor power, mobile phone handsets, PDAs, smartphones, and wireless LAN and Bluetooth® devices.
