Overview
The TPS61045DRBRG4 is a high-frequency, digitally adjustable boost converter produced by Texas Instruments. This device operates with an input voltage range of 1.8 to 6 V and can generate output voltages up to 28 V. It features a pulse frequency modulation (PFM) scheme with constant peak current control, which maintains high efficiency across the entire load current range. The converter is designed for applications requiring precise output voltage control and low power consumption, making it suitable for various portable and handheld devices.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 1.8 | 6 | V | |
| Output Voltage Range | 28 | V | ||
| Switching Frequency | up to 1 MHz | |||
| Operating Quiescent Current | 40 | 65 | μA | |
| Shutdown Current | 0.1 | 1 | μA | |
| Main Switch MOSFET Current Limit | 300 | 375 | 450 | mA |
| Input Switch MOSFET On-Resistance | 1 | 2 | Ω | |
| Operating Ambient Temperature | -40 | 85 | °C | |
| Operating Junction Temperature | -40 | 125 | °C |
Key Features
- Digitally adjustable output voltage control using the CTRL pin.
- Output voltage range up to 28 V.
- High efficiency up to 85%.
- Switching frequency up to 1 MHz, allowing the use of small external components.
- True shutdown feature, disconnecting the output from the input during shutdown.
- No load quiescent current of 40 μA typical.
- Thermal shutdown mode to prevent overheating.
- Available in a small 3-mm × 3-mm VSON package.
Applications
- LCD bias supply for small to medium LCD displays.
- OLED display power supply.
- PDA, Pocket PC, and Smart Phone power management.
- Handheld devices and other portable electronics.
Q & A
- What is the input voltage range of the TPS61045DRBRG4?
The input voltage range is from 1.8 V to 6 V.
- What is the maximum output voltage of the TPS61045DRBRG4?
The maximum output voltage is up to 28 V.
- How is the output voltage adjusted on the TPS61045DRBRG4?
The output voltage is adjusted digitally using the CTRL pin.
- What is the typical switching frequency of the TPS61045DRBRG4?
The typical switching frequency is up to 1 MHz.
- What is the quiescent current during shutdown?
The shutdown current is typically 0.1 μA.
- Does the TPS61045DRBRG4 have thermal protection?
- What is the package size of the TPS61045DRBRG4?
- What are some common applications for the TPS61045DRBRG4?
- How does the device handle undervoltage conditions?
- What is the maximum junction temperature for the TPS61045DRBRG4?
