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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM SOT23-5
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：1.8V
- Voltage - Supply (Max)：6V
- Voltage - Output：28V
- Current - Output / Channel：350mA (Switch)
- Frequency：1MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The TPS61040DBVR is a synchronous boost converter from Texas Instruments designed for LCD and white LED applications. It operates with an input voltage range of 1.8V to 6V, delivering a maximum output current of 400mA at voltages up to 28V. The device features a typical quiescent current of 28µA and a shutdown current of 1µA. It integrates a 1MHz switching frequency, internal soft-start, and a 400mA switch current limit. Packaged in a compact SOT-23-5 format measuring 3.05mm x 1.75mm x 1.3mm, it supports operation between -40°C and +85°C.
Feature Summary
- Integrated synchronous rectification for high efficiency in small packages
- Ultra-low power consumption with 28µA typical quiescent current
- Fixed 1MHz switching frequency enables use of small external components
- Internal soft-start limits inrush current during startup
Applications
- LCD bias power supplies
- White LED backlight drivers
- Portable multimedia devices
- Battery-powered imaging equipment
Procurement Notes
Verify the package marking matches TPS61040DBVR to distinguish from similar variants like TPS61041. Confirm the supplier provides original manufacturer documentation. Check RoHS compliance status if required by specific regional regulations. Ensure storage conditions adhere to moisture sensitivity levels defined in the datasheet to prevent soldering defects upon reflow.
Selection Notes
Select this component when space constraints require an SOT-23 footprint for boost conversion. It is suitable for single-cell lithium-ion or NiMH battery systems requiring output voltages up to 28V. Consider the 400mA current limit for load requirements. Compare against non-synchronous alternatives if higher efficiency at light loads is not critical.
Part Context
This part belongs to the TPS6104x family of low-power DC/DC boost converters. It shares architectural similarities with the TPS61041 but differs in specific current ratings and feature sets. The DBVR suffix indicates the SOT-23-5 surface-mount package configuration used for compact portable electronics designs.
Replacement Considerations
TPS61041DRVR offers similar functionality with different current characteristics. Verify pin compatibility and thermal performance before substitution. Ensure the replacement supports the required input voltage range and output voltage settings for the specific application circuit.
