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TPS54202DDCR

Synchronous Buck Converter

The TPS54202DDCR is a synchronous buck converter from Texas Instruments. View the full TPS54202DDCR datasheet below including key specifications, pinout, electrical characteristics, absolute maximum ratings.

TPS54202DDCR shares its datasheet with TPS54202, whose page lists every part number it covers.

Official TPS54202DDCR datasheet (PDF) — the source this page was extracted from.

Manufacturer

Texas Instruments

Category

Switching Regulators (Buck)

Package

DDC (SOT-23, 6)

Lifecycle

Active

TPS54202DDCR Key Specifications

ParameterValue
Output Current2A
Switching Frequency500kHz
FunctionStep-Down
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature-40°C ~ 125°C (TJ)
Output ConfigurationPositive
Output TypeAdjustable
Package / CaseSOT-23-6 Thin, TSOT-23-6
PackagingMouseReel
Standard Pack Qty3000
Supplier Device PackageSOT-23-THIN
Synchronous RectifierYes
TopologyBuck
Input Voltage (Max)28V
Input Voltage (Min)4.5V
Output Voltage (Max)28V
Output Voltage0.596V

TPS54202DDCR Overview

Part: TPS54202 — Texas Instruments

Type: Synchronous Step-Down Converter

Description: A 4.5V to 28V input, 2A synchronous buck converter with integrated MOSFETs, fixed 500kHz switching frequency, and frequency spread spectrum for EMI reduction.

Operating Conditions:

  • Supply voltage: 4.5–28 V
  • Operating temperature: -40 to 125 °C
  • Output voltage range: -0.1 to 28 V

Absolute Maximum Ratings:

  • Max supply voltage: 30 V (VIN)
  • Max junction temperature: 150 °C
  • Max storage temperature: 150 °C

Key Specs:

  • Continuous output current: 2 A
  • Switching frequency: 500 kHz (typical)
  • High-side FET on resistance: 148 mΩ (typical, at TA = 25°C)
  • Low-side FET on resistance: 78 mΩ (typical, at TA = 25°C)
  • Non-switching quiescent current: 45 μA (typical, EN = 5V, VFB = 1V)
  • Shutdown current: 3 μA (typical, EN = GND)
  • Feedback voltage: 0.596 V (typical, VIN = 12V)
  • Soft-start time: 5 mS (typical)

Features:

  • Integrated 148mΩ and 78mΩ MOSFETs
  • Low 3μA shutdown, 45μA quiescent current
  • Internal 5mS soft start
  • Fixed 500kHz switching frequency
  • Frequency spread spectrum to reduce EMI
  • Advanced Eco-mode™ pulse skip
  • Peak current mode control
  • Internal loop compensation
  • Overcurrent protection for both MOSFETs with hiccup mode protection
  • Overvoltage protection
  • Thermal shutdown

Applications:

  • 12V, 24V distributed power-bus supply
  • White goods
  • Consumer application
  • Audio
  • STB, DTV
  • Printer

Package:

  • DDC (SOT-23, 6)

TPS54202DDCR Features

  • 4.5V to 28V wide input voltage range
  • Integrated 148mΩ and 78mΩ MOSFETs for 2A, continuous output current
  • Low 3μA shutdown, 45μA quiescent current
  • Internal 5mS soft start
  • Fixed 500kHz switching frequency
  • Frequency spread spectrum to reduce EMI
  • Advanced Eco-mode ™ pulse skip
  • Peak current mode control
  • Internal loop compensation
  • Overcurrent protection for both MOSFETs with hiccup mode protection
  • Overvoltage protection
  • Thermal shutdown
  • SOT-23 (6) package

TPS54202DDCR Applications

Copyright © 2016, Texas Instruments Incorporated

Simplified Schematic

TPS54202DDCR Pin Configuration

PinNameTypeDescription
1GND–Ground pin. Source terminal of low-side power NFET as well as the ground terminal for controller circuit. Connect sensitive VFB to this GND at a single point.
2SWOSwitch node connection between high-side NFET and low-side NFET.
3VIN–Input voltage supply pin. The drain terminal of high-side power NFET.
4FBIConverter feedback input. Connect to output voltage with feedback resistor divider.
5ENIThis pin is the enable pin. Float the EN pin to enable.
6BOOTOSupply input for the high-side NFET gate drive circuit. Connect a 0.1µF capacitor between BOOT and SW pins.

TPS54202DDCR Electrical Characteristics

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. TJ = -40°C to +125°C, VIN = 4.5V to 28V, (unless otherwise noted).

PARAMETERPARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLY
V INInput voltage range4.528V
I QNon switching quiescent currentEN =5V, VFB = 1V45μA
I OFFShut down currentEN = GND3μA
V IN(UVLO)VIN under voltage lockoutRising V IN3.94.24.4V
V IN(UVLO)Falling V IN3.43.73.9V
V IN(UVLO)Hysteresis400480560mV
ENABLE (EN PIN)ENABLE (EN PIN)ENABLE (EN PIN)ENABLE (EN PIN)ENABLE (EN PIN)ENABLE (EN PIN)ENABLE (EN PIN)
V (EN_RISING)Enable thresholdRising1.211.28V
V (EN_FALLING)Falling1.11.19V
I (EN_INPUT)Input currentV EN = 1V0.7μA
I (EN_HYS)Hysteresis currentV EN = 1.5V1.55μA
FEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIER
V FBFeedback VoltageV IN = 12V0.5810.5960.611V
PULSE SKIP MODEPULSE SKIP MODEPULSE SKIP MODEPULSE SKIP MODEPULSE SKIP MODEPULSE SKIP MODEPULSE SKIP MODE
I (SKIP) (1)Pulse skip mode peak inductor current thresholdV IN = 24V, V OUT = 5V, L = 15 μH300mA
POWER STAGEPOWER STAGEPOWER STAGEPOWER STAGEPOWER STAGEPOWER STAGEPOWER STAGE
R (HSD)High-side FET on resistanceT A = 25°C, V BST - SW = 5V148mΩ
R (LSD)Low-side FET on resistanceT A = 25°C, V IN = 12V78mΩ
CURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMIT
I (LIM_HS)High side current limit2.53.23.9A
I (LIM_LS)Low side source current limit234.3A
OSCILLATOROSCILLATOROSCILLATOROSCILLATOROSCILLATOROSCILLATOROSCILLATOR
F swCentre switching frequency390500630kHz
OVER TEMPERATURE PROTECTIONOVER TEMPERATURE PROTECTIONOVER TEMPERATURE PROTECTIONOVER TEMPERATURE PROTECTIONOVER TEMPERATURE PROTECTIONOVER TEMPERATURE PROTECTIONOVER TEMPERATURE PROTECTION
Thermal Shutdown (1)Rising temperature160°C
Thermal Shutdown (1)Hysteresis10°C
Thermal Shutdown (1)Hiccup time32768Cycles

TPS54202DDCR Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)

MINMAXUNIT
Input voltage range, V IVIN-0.330V
Input voltage range, V IEN-0.37V
Input voltage range, V IFB-0.37V
Output voltageBOOT-SW-0.37V
Output voltageSW-0.330V
Output voltageSW (20ns transient)-530V
Operating junction temperature, T JOperating junction temperature, T J-40150°C
Storage temperature range, T stgStorage temperature range, T stg-65150°C

TPS54202DDCR Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MINMAXUNIT
VInput voltage rangeVIN4.528V
IEN-0.15.5V
FB-0.15.5V
V OOutput voltage rangeBOOT-SW-0.15.5V
V OSW-0.128V
T JOperating junction temperatureOperating junction temperature-40125°C

TPS54202DDCR Thermal Information

THERMAL METRIC (1)TPS54202 DDC ( SOT23) 6 PINSUNIT
R θJAJunction-to-ambient thermal resistance118.6°C/W
R θJC(top)Junction-to-case (top) thermal resistance63.6°C/W
R θJBJunction-to-board thermal resistance34.4°C/W
ψ JTJunction-to-top characterization parameter18.5°C/W
ψ JBJunction-to-board characterization parameter33.7°C/W
R θJA_EVMJunction-to-ambient thermal resistance on official EVM board57.2°C/W

TPS54202DDCR Typical Application

The TPS54202 device is typically used as a step-down converter, which converts an input voltage from 8V to 28V to fixed output voltage 5V.

TPS54202DDCR Package Information

PART NUMBERPACKAGE (1)PACKAGE SIZE (2)
TPS54202DDC (SOT-23, 6)2.9mm × 2.8mm
  • (1) For more information, see Section 10.
  • (2) The package size (length × width) is a nominal value and includes pins, where applicable.

Efficiency vs Output Current

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
TPS54202Texas InstrumentsSOT-23 (6)

Other Switching Regulators (Buck)

  • TPS54302 – Texas Instruments, Synchronous Step-Down Converter
  • MAX20730 – Analog Devices, Synchronous Switching Regulator
  • TLV62568 – Texas Instruments, Synchronous Buck Converter
  • LM2596 – onsemi, Step-Down Voltage Regulator
  • TPS562200 – Texas Instruments, Synchronous Buck Converter
  • AP63203WU – Diodes Incorporated, Synchronous Buck Converter
  • TPS54202 – Texas Instruments, Synchronous Buck Converter
  • AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter

All Switching Regulators (Buck) datasheetsAll Texas Instruments datasheets (2,442)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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