Overview
The TPS61041DBVR is a high-frequency boost converter produced by Texas Instruments. It is specifically designed for small to medium LCD bias supply and white LED backlight applications. This device is capable of generating output voltages up to 28 V from input voltages ranging from 1.8 V to 6 V, making it ideal for use with dual-cell NiMH/NiCd or single-cell Li-Ion batteries. The TPS61041DBVR operates with a switching frequency of up to 1 MHz, allowing the use of small external components and contributing to a compact overall solution size.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.8 to 6 | V |
| Adjustable Output Voltage Range | Up to 28 | V |
| Internal Switch Current | 250 | mA |
| Switching Frequency | Up to 1 | MHz |
| No-Load Quiescent Current | 28 | μA |
| Shutdown Current | 1 | μA |
| MOSFET On-Resistance (VIN = 2.4 V, ISW = 200 mA) | 750 to 1250 | mΩ |
| Package Type | SOT23-5 (DBV) | |
| Operating Temperature Range | -40 to 85 | °C |
Key Features
- High-frequency boost converter with up to 1-MHz switching frequency
- Adjustable output voltage range up to 28 V
- Internal switch current limit of 250 mA
- Low quiescent current of typically 28 μA and shutdown current of 1 μA
- Internal soft start
- Available in SOT23-5, TSOT23-5, and 2-mm × 2-mm × 0.8-mm WSON packages
- High efficiency over the entire load current range using pulse-frequency-modulation (PFM) scheme with constant peak current control
Applications
- LCD bias supply
- White LED backlight supplies for LCDs
- Digital still cameras
- PDAs, organizers, and handheld PCs
- Cellular phones
- Internet audio players
- Standard 3.3-V or 5-V to 12-V power conversions
Q & A
- What is the input voltage range of the TPS61041DBVR?
The input voltage range is from 1.8 V to 6 V.
- What is the maximum output voltage that the TPS61041DBVR can generate?
The device can generate output voltages up to 28 V.
- What is the switching frequency of the TPS61041DBVR?
The switching frequency is up to 1 MHz.
- What is the internal switch current limit of the TPS61041DBVR?
The internal switch current limit is 250 mA.
- What is the typical no-load quiescent current of the TPS61041DBVR?
The typical no-load quiescent current is 28 μA.
- What is the typical shutdown current of the TPS61041DBVR?
The typical shutdown current is 1 μA.
- In what packages is the TPS61041DBVR available?
The device is available in SOT23-5, TSOT23-5, and 2-mm × 2-mm × 0.8-mm WSON packages.
- What are some common applications of the TPS61041DBVR?
Common applications include LCD bias supply, white LED backlight supplies, digital still cameras, PDAs, cellular phones, and internet audio players.
- How does the TPS61041DBVR control its output voltage?
The device operates using a pulse-frequency-modulation (PFM) scheme with constant peak current control, which maintains high efficiency over the entire load current range.
- What is the operating temperature range of the TPS61041DBVR?
The operating temperature range is from -40°C to 85°C.
