Overview
The TPS71733DCKT is a low-dropout (LDO) linear regulator from Texas Instruments, part of the TPS717 family. This device is designed to offer high performance with ultra-low current consumption, making it ideal for battery-powered and portable applications. It features a high-gain, high-bandwidth error loop that provides excellent power-supply rejection ratio (PSRR) and very low dropout voltage. The TPS71733DCKT is available in small package options, including the 5-pin SC-70 and WSON-6 packages, which are suitable for space-constrained designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.5 | 6.5 | V | |
| Output Voltage Range | 0.9 | 5.0 | V | |
| Output Current | 150 | mA | ||
| Dropout Voltage | 170 | mV | ||
| PSRR at 1 kHz | 70 | dB | ||
| PSRR at 100 kHz | 67 | dB | ||
| PSRR at 1 MHz | 45 | dB | ||
| Output Noise Voltage (100 Hz to 100 kHz) | 30 | μVRMS | ||
| Operating Temperature Range | -40 | 125 | °C | |
| Package Options | SC-70, WSON-6 |
Key Features
- Ultra-high PSRR: 70 dB at 1 kHz, 67 dB at 100 kHz, and 45 dB at 1 MHz.
- Very low dropout voltage: 170 mV typical at 150 mA.
- Low noise: 30 μVRMS typical from 100 Hz to 100 kHz.
- Excellent load and line transient response.
- Internal current limit and thermal shutdown protection.
- Shutdown capability with active high enable pin.
- Quick-start circuit for fast-charging the noise reduction capacitor.
- Stable with a 1-μF ceramic output capacitor.
- Available in fixed and adjustable output voltage versions.
Applications
- Camera sensor power.
- Mobile phone handsets.
- PDAs and smartphones.
- Wireless LAN and Bluetooth devices.
- Battery-powered and portable equipment.
Q & A
- What is the input voltage range of the TPS71733DCKT?
The input voltage range is from 2.5 V to 6.5 V.
- What is the typical dropout voltage of the TPS71733DCKT?
The typical dropout voltage is 170 mV at 150 mA.
- What are the package options available for the TPS71733DCKT?
The device is available in SC-70 and WSON-6 packages.
- What is the PSRR of the TPS71733DCKT at 1 kHz?
The PSRR at 1 kHz is 70 dB.
- Does the TPS71733DCKT have internal protection features?
- How does the quick-start circuit function in the TPS71733DCKT?
The quick-start circuit fast-charges the noise reduction capacitor to achieve very low output noise and fast start-up times.
- What is the operating temperature range of the TPS71733DCKT?
The operating temperature range is from -40°C to 125°C.
- Is the TPS71733DCKT stable with a small output capacitor?
- What are some common applications of the TPS71733DCKT?
- How does the shutdown feature work on the TPS71733DCKT?
The shutdown feature is controlled by an active high enable pin (EN), which can be connected to the input voltage if shutdown capability is not required.
