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TPS61033
  • TPS61033
  • TPS61033

TPS61033

ACTIVE

5-V, 5-A boost converter with power good, output discharge and PFM/PWM control

Texas Instruments TPS61033 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Boost

Vin (max) (V)

5.5

Vin (min) (V)

1.8

Vout (max) (V)

5.5

Vout (min) (V)

2.2

Switch current limit (typ) (A)

5.88

Features

Bypass Mode Pass-through Mode, Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Spread Spectrum, Synchronous Rectification, UVLO Fixed

EMI features

Frequency Dithering, Spread Spectrum

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000018

Duty cycle (max) (%)

90

Package

SOT-5X3 (DRL)-8-3.36 mm² 2.1 x 1.6

Features

  • Input voltage range: 1.8 V to 5.5 V
  • Output voltage range: 2.2 V to 5.5 V(TPS61033)
    • FB connects to VIN output voltage for fixed 5.0 V(TPS61033X)
  • Two valley switching current limit options
    • TPS61033: 5.5-A typical
    • TPS610333: 1.85-A typical
  • High efficiency and power capability
    • Two 25-mΩ (LS) / 46-mΩ (HS) MOSFETs
    • Support up to 2.4 MHz with small L-C
    • Up to 93.42% efficiency at V IN = 3.3V, V OUT = 5V, and I OUT = 1A
    • Up to 90.78% efficiency at V IN = 3.3V, V OUT = 5V, and I OUT = 2A
  • Extend the system operating time
    • Typical 20-µA quiescent current into V IN pin
    • Typical 5.3µA quiescent current into V OUT pin
    • Typical 0.1-µA shutdown current
  • ±1.5% Reference voltage accuracy over –40°C to +125°C
  • Power good output with window comparator
  • Pin-selectable auto PFM or forced PWM mode at light load
  • Pass-through mode when V IN > V OUT
  • Safety and robust operation features
    • True disconnection between input and output during shutdown
    • Output overvoltage and thermal shutdown protections
    • Output short-circuit protection
  • 2.1-mm × 1.6-mm SOT583 8-Pin package
  • Input voltage range: 1.8 V to 5.5 V
  • Output voltage range: 2.2 V to 5.5 V(TPS61033)
    • FB connects to VIN output voltage for fixed 5.0 V(TPS61033X)
  • Two valley switching current limit options
    • TPS61033: 5.5-A typical
    • TPS610333: 1.85-A typical
  • High efficiency and power capability
    • Two 25-mΩ (LS) / 46-mΩ (HS) MOSFETs
    • Support up to 2.4 MHz with small L-C
    • Up to 93.42% efficiency at V IN = 3.3V, V OUT = 5V, and I OUT = 1A
    • Up to 90.78% efficiency at V IN = 3.3V, V OUT = 5V, and I OUT = 2A
  • Extend the system operating time
    • Typical 20-µA quiescent current into V IN pin
    • Typical 5.3µA quiescent current into V OUT pin
    • Typical 0.1-µA shutdown current
  • ±1.5% Reference voltage accuracy over –40°C to +125°C
  • Power good output with window comparator
  • Pin-selectable auto PFM or forced PWM mode at light load
  • Pass-through mode when V IN > V OUT
  • Safety and robust operation features
    • True disconnection between input and output during shutdown
    • Output overvoltage and thermal shutdown protections
    • Output short-circuit protection
  • 2.1-mm × 1.6-mm SOT583 8-Pin package

Description

The TPS61033X is a synchronous boost converter. The device provides a power supply solution for portable equipment and smart devices powered by various batteries and other power supply. The TPS61033 has 5.5-A (typical) valley switch current limit and TPS610333 has 1.85-A (typical) valley switch current limit over full temperature range.

The TPS61033X uses adaptive constant on-time valley-current-control topology to regulate the output voltage and operates at 2.4-MHz switching frequency. There are two optional modes at light load by configuring the MODE pin: auto PFM mode and forced PWM to balance the efficiency and noise immunity in light load. The TPS61033X consumes a 20-µA quiescent current from V IN at light load condition. During shutdown, the TPS61033X is completely disconnected from the input power and only consumes a 0.1-µA current to achieve long battery life. The TPS61033X has 5.75-V output overvoltage protection, output short circuit protection, and thermal shutdown protection.

The TPS61033X offers a very small solution size with 2.1-mm × 1.6-mm SOT583 package and minimum amount of external components.

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