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TPS63001DRCR

Buck-boost converter, 1.8-5.5Vin, 3.3V fixed, 1.2A, 96% eff, SON-10

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Manufacturer Part：

TPS63001DRCR

Package：

SON-10 (3 x 3 x 0.9 mm)

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Description

Product Overview

The TPS63001DRCR from Texas Instruments is a buck-boost converter with 1.8V to 5.5V input and fixed 3.3V output at up to 1.2A. Operating at 2.4MHz with 96% efficiency, it seamlessly transitions between buck and boost modes for single-cell Li-Ion battery applications in a SON-10 package.

Key Specifications

Input Voltage Range 1.8V to 5.5V
Output Voltage 3.3V (fixed)
Maximum Output Current 1.2 A (buck), 0.8A (boost)
Efficiency Up to 96%
Switching Frequency 2.4 MHz (fixed)
Quiescent Current 30 μA (typical)
Shutdown Current Less than 1 μA
Package SON-10 (DRC) (3 x 3 mm)
Operating Temperature -40°C to +85°C

Features

  • Seamless transition between buck and boost modes for battery applications
  • Fixed 3.3V output with up to 1.2A output current in buck mode
  • 2.4MHz fixed switching frequency enables small external components
  • Up to 96% efficiency for extended battery life
  • 30μA quiescent current in power-save mode
  • Integrated soft-start and output disconnect during shutdown

Applications

  • Single-cell Li-Ion to 3.3V power conversion in portable devices
  • Battery-powered wireless communication modules
  • USB-powered devices with variable input voltage
  • Handheld instruments and measurement equipment
  • White LED backlight power supplies

The TPS63001DRCR from Texas Instruments is a high-efficiency buck-boost converter designed for applications where the input voltage can be above, below, or equal to the output voltage. It provides a fixed 3.3V output from a 1.8V to 5.5V input, making it ideal for single-cell Li-Ion battery applications where the battery voltage ranges from 3.0V to 4.2V. The device seamlessly transitions between buck and boost modes without output discontinuity, delivering up to 1.2A in buck mode and 0.8A in boost mode. With up to 96% efficiency and a 2.4MHz fixed switching frequency, it enables compact designs with small external inductors and capacitors. The 30μA quiescent current in power-save mode extends battery life during idle periods.

The TPS63001 operates as a 4-switch buck-boost converter using three operational modes. (1) In buck mode (VIN > VOUT), the high-side switch (S1) and synchronous rectifier (S2) operate as a standard buck converter while the boost switches (S3, S4) remain off. (2) In boost mode (VIN < VOUT), the boost switches (S3, S4) operate as a boost converter while the buck switches (S1, S2) remain in their pass-through states. (3) In buck-boost mode (VIN ≈ VOUT), all four switches are actively controlled in a combined topology to maintain regulation. The device automatically and seamlessly transitions between these modes based on the input-to-output voltage ratio, with no output voltage discontinuity during transitions. Internal current-mode control provides fast transient response and cycle-by-cycle current limiting.

Pin Name Function
1 VIN Input supply voltage (1.8-5.5V)
2 EN Enable input (active high)
3 PS/SYNC Power-save / synchronization input
4 VOUT Regulated output voltage (3.3V)
5 L1 Inductor connection 1
6 L2 Inductor connection 2
7 PGND Power ground
8 AGND Analog ground
9 FB Feedback input (connected to VOUT for fixed version)
10 VINA Analog supply input
  • Single-cell Li-Ion to 3.3V conversion where battery voltage crosses the output level
  • Portable wireless modules requiring stable 3.3V from variable battery input
  • USB-powered devices with 3.3V logic needing buck-boost capability
  • Handheld measurement instruments with Li-Ion battery and 3.3V peripherals
  • White LED driver power stages requiring voltage above and below LED forward voltage
Model Manufacturer Key Difference
TPS63002DRCR TI Adjustable output version
TPS63000DRCR TI Adjustable, higher current version
LTC3532ESS#TRPBF Analog Devices 2A buck-boost, adjustable
MAX77827 Maxim Buck-boost, 2.5A, small footprint
SY89825U Silergy Buck-boost, 2A, QFN-12
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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