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TPS61040DBVR

TITPS61040DBVR

Texas Instruments
Integrated boost converter option for compact, low-voltage boost applications with fewer external components.
Active9,657 in stock
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Overview

The TPS61040DBVR is a high-frequency boost converter designed for low-power applications requiring output voltages up to 28V from an input as low as 1.8V. Operating at switching frequencies up to 1MHz, it allows the use of small external ceramic capacitors and inductors to minimize PCB footprint. Its low quiescent current of 28uA makes it suitable for battery-operated handheld devices.

Why Choose This Part

The device features an internal 400mA switch and soft-start capability to reduce inrush current during startup. Its high 1MHz switching frequency enables a very small solution size, while the low 1uA shutdown current effectively preserves battery life in portable electronics.

Applications

LCD Bias Supply
Generates the necessary high-voltage bias rails for small to medium-sized LCD panels in handheld instruments.
White-LED Backlighting
Drives series-connected LEDs for uniform brightness in display backlights for cellular phones and PDAs.
Digital Still Cameras
Provides boosted voltage rails for imaging sensors and internal logic from Li-ion or NiMH battery sources.
General 3.3V to 12V Conversion
Acts as a compact step-up stage for industrial sensors or communication modules requiring higher voltage rails from standard logic levels.

Key Specifications

Topology Step-Up (Boost)
Output Type Adjustable
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Current - Output 400mA
Number of Outputs 1
Output Configuration Positive
Frequency - Switching Up to 1MHz
Operating Temperature -40degC ~ 85degC (TA)
Synchronous Rectifier No
Voltage - Input (Max) 6V
Voltage - Input (Min) 1.8V
Voltage - Output (Max) 28V
Supplier Device Package SOT-23-5
Voltage - Output (Min/Fixed) 1.8V

Getting Started

Engineers can evaluate this part using the TPS61040EVM-001 evaluation module to test various output configurations. Layout is critical due to the 1MHz switching speed; ensure the input capacitor, output capacitor, and inductor are placed as close to the SOT-23 pins as possible to minimize parasitic inductance.

TPS61040 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
TPS61040DBVR (this part) SC-74A, SOT-753 9,657
TPS61040DRVR WDFN-6 11,701

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