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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM SOT23-THIN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- 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：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：SOT-23-THIN
- Grade：-
- Qualification：-
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Overview
The TPS61040DDCT is a low-power DC-DC boost converter manufactured by Texas Instruments, housed in a SOT-23-5 package. It operates with an input voltage range of 1.8 V to 6 V and provides a single adjustable output from 1.8 V to 28 V. The device supports a maximum output current of 400 mA and features a fixed switching frequency of 1 MHz. Quiescent current is specified at 28 uA. It functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrates a synchronous boost converter topology for efficient power conversion.
- Features a fixed 1 MHz switching frequency to optimize external component size.
- Includes internal soft-start functionality to limit inrush current during startup.
- Provides thermal shutdown protection to safeguard the device under overload conditions.
Applications
- Portable battery-powered devices requiring step-up voltage regulation
- LED backlight drivers for mobile displays
- General purpose boost applications in consumer electronics
Procurement Notes
Verify the specific suffix DDCT corresponds to the SOT-23-5 package and tape-and-reel quantity when ordering. Confirm that the application circuit includes appropriate input and output capacitors as recommended in the official datasheet to ensure stability. Ensure the selected operating voltage and current requirements remain within the absolute maximum ratings defined by Texas Instruments.
Selection Notes
Select this component for designs requiring a compact solution with high efficiency at light loads. The SOT-23-5 package suits space-constrained PCB layouts. Consider the 1 MHz frequency for balancing EMI performance and passive component size. Verify that the load current does not exceed the 400 mA limit and that the input source can sustain the required peak currents.
Part Context
The TPS61040 belongs to the TPS6104x family of low-power boost converters from Texas Instruments. This series is designed for portable applications where battery life and small form factor are critical. The DDCT variant specifically denotes the SOT-23-5 surface-mount package configuration optimized for automated assembly processes.
Replacement Considerations
Direct pin-compatible alternatives within the same family include the TPS61041, which offers similar electrical characteristics but may differ in specific current limits or feedback configurations. Always consult the latest datasheets to verify compatibility before substitution.
