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Product details

Parameters

Input voltage (type) DC/DC Topology Buck, Inductive Vin (Min) (V) 4.5 Vin (Max) (V) 28 Iout (Max) (A) 1.5 Iq (Typ) (mA) 0.002 Features Enable, Input/Output Isolation, OVP, Over Current Protection, Synchronous Rectification, True Shutdown Number of LEDs 10 Operating temperature range (C) -40 to 125 Dimming method Analog, PWM open-in-new Find other Illumination LED drivers

Package | Pins | Size

SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Illumination LED drivers

Features

  • 4.5-V to 28-V Wide Input Range
  • Integrated 150-mΩ and 70-mΩ MOSFETs for 1.5‑A, Continuous Output Current
  • Low, 2-µA Shutdown Current
  • Fixed 600-kHz Frequency
  • Peak Current Mode With Internal Compensation
  • 200-mV and 100-mV Sense Voltage During Analog and PWM Dimming Modes
  • Precision Analog Dimming (ADIM) by PWM Input
  • LED-Open and -Short Protection
  • Sense-Resistor-Open and -Short Protection
  • Shutdown-and-Latch Mode Protection (TPS54200)
  • Auto-Retry Mode Protection (TPS54201)
  • Thermal Shutdown
  • 6-Pin SOT-23-THIN Package

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Description

The TPS54200 and TPS54201 devices are 1.5-A synchronous buck mono-color or IR drivers with 28-V maximum input voltage. Current-mode operation provides fast transient response and eases loop stabilization.

The TPS54200 and TPS54201 can be used to drive single-string or multi-string mono-color or Infrared (IR) LED arrays as in the case of night vision cameras.

By integrating the MOSFETs and employing the SOT-23-THIN package, the TPS54200 and TPS54201 devices provide high power density and only require a small footprint on the PCB.

The TPS54200 and TPS54201 devices implement analog dimming by changing the internal reference voltage proportional to the duty cycle of the PWM signal input in analog dimming mode. This devices also support PWM dimming mode, in which the internal reference voltage is halved to 100 mV for higher efficiency.

Cycle-by-cycle current limit in the high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. There is a low-side MOSFET sinking current limit to prevent excessive reverse current. For safety and protection, the TPS54200 and TPS54201 devices include LED-open and -short protection, sense-resistor-open and -short protection, and device thermal protection. The TPS54200 device implements shutdown-and-latch mode protection, whereas the TPS54201 device adopts auto-retry mode protection.

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Download

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
49
Description
The TPS54201EVM-818 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS54201 synchronous buck switching regulator designed for high-current LED driver applications. The TPS54201 is a 1.5-A synchronous buck LED driver and features a wide input-voltage range (4.5 (...)
Features
  • Two 150-mΩ/70-mΩ MOSFETs for 1.5-A continuous output current
  • 200-mV/100-mV internal voltage reference in analog/PWM dimming mode
  • Precision analog dimming by PWM input as low as 1%
  • LED open/short protection
  • Sense-resistor open/short protection

Design tools & simulation

SIMULATION MODEL Download
SLUM582.ZIP (112 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
IEEE802.3at Type-1 PoE and 12V adapter input to point of load reference design for IP network camera
TIDA-010034 — Power over Ethernet (PoE) enables power to be delivered over the same ethernet cable as data with no danger of cross-talk, interference, or corruption of the data streams. This reference design showcases end-to-end power tree for an IP network camera powered using PoE or 12-V adapter based on the (...)
document-generic Schematic
REFERENCE DESIGNS Download
IR LED Illumination and ICR Control Reference Design for IP Network Cameras With Day/Night Vision
TIDA-01586 — This reference design showcases an Infrared LED illumination sub-system for Internet Protocol (IP) network cameras with day and night vision. The system features a cut filter control, LED dimming, ambient light measuring and ballasting for current of each IR LED string. Ballasting is an alternative (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDC) 6 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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