Overview
The TPS61070DDCRG4 is a highly efficient synchronous boost converter from Texas Instruments, designed for a wide range of battery-powered applications. This device is part of the TPS6107x family and is known for its high efficiency, low quiescent current, and compact package. The TPS61070 is particularly suited for portable electronics, medical devices, and other applications where power efficiency and small form factor are critical.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (after start-up) | 0.9 | - | 5.5 | V |
| Output Voltage Range | 1.8 | - | 5.5 | V |
| Oscillator Frequency | 960 | 1200 | 1440 | kHz |
| Switch Current Limit | 500 | 600 | 700 | mA |
| Boost Switch-on Resistance | 480 | - | - | mΩ |
| Rectifying Switch-on Resistance | 600 | - | - | mΩ |
| Quiescent Current (VBAT = 1.2 V, VOUT = 3.3 V) | 0.5 | 1 | - | µA |
| Shutdown Current (VBAT = 1.2 V) | 0.05 | - | 0.5 | µA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Junction-to-Ambient Thermal Resistance | - | - | 139.1 | °C/W |
Key Features
- High Efficiency: Up to 90% efficient synchronous boost converter.
- Low Quiescent Current: Ultra-low quiescent current to minimize battery drain.
- Adjustable Output Voltage: Output voltage can be programmed using an external resistor divider.
- Power-Save Mode: Automatically enters power-save mode to improve efficiency when the inductor current becomes zero.
- Compact Package: Available in a 6-pin thin SOT23 package.
- Overtemperature Protection: Built-in overtemperature protection to ensure device reliability.
- Wide Input Voltage Range: Supports input voltages from 0.9 V to 5.5 V.
Applications
- Portable Audio Players: Ideal for powering audio devices with high efficiency.
- PDAs and Cellular Phones: Suitable for handheld electronic devices requiring low power consumption.
- Personal Medical Products: Used in medical devices where power efficiency and reliability are crucial.
- White LED Lighting: Efficient power supply for LED lighting applications.
- Battery-Powered Products: General use in any battery-powered product requiring a boost converter.
Q & A
- What is the input voltage range for the TPS61070?
The input voltage range for the TPS61070 is from 0.9 V to 5.5 V after start-up.
- How is the output voltage programmed for the TPS61070?
The output voltage can be programmed using an external resistor divider.
- What is the typical quiescent current of the TPS61070?
The typical quiescent current is 1 µA when VBAT = 1.2 V and VOUT = 3.3 V.
- Does the TPS61070 have overtemperature protection?
Yes, the device has built-in overtemperature protection with a threshold of 140 °C.
- What is the maximum output voltage for the TPS61070?
The maximum recommended output voltage is 5.5 V.
- What is the efficiency of the TPS61070?
The TPS61070 can achieve up to 90% efficiency.
- What package type is the TPS61070 available in?
The TPS61070 is available in a 6-pin thin SOT23 package.
- Can the TPS61070 be used with different types of batteries?
Yes, it supports single-cell, two-cell, and three-cell alkaline, NiCd, NiMH, and single-cell Li-Ion or Li-Polymer batteries.
- How does the power-save mode work in the TPS61070?
The device automatically enters power-save mode when the inductor current becomes zero to improve efficiency.
- What is the shutdown current of the TPS61070?
The shutdown current is typically 0.05 µA when VBAT = 1.2 V.
