TPS542XX

Part: TPS54202 from Texas Instruments

Type: Synchronous Step-Down Converter

Key Specs:

• Input voltage range: 4.5V to 28V
• Continuous output current: 2A
• Quiescent current: 45μA
• Shutdown current: 3μA
• Switching frequency: Fixed 500kHz
• Internal soft start: 5mS
• Integrated MOSFETs: 148mΩ and 78mΩ

Features:

• 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
• Audio
• STB, DTV
• Printer

Package:

• DDC (SOT-23, 6): 2.9mm × 2.8mm

• 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

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

Simplified Schematic

Figure 4-1. 6-Pin SOT-23 DDC Package (Top View)

Table 4-1. Pin Functions

(1) O = Output; I = Input

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. T^J = –40°C to +125°C, VIN = 4.5V to 28V, (unless otherwise noted).

(1) Not production tested

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

⁽¹⁾ Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions. If used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime.

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

⁽¹⁾ For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application note.

Product Folder Links: TPS54202

⁽²⁾ JEDEC document JEP157 states that 250V CDM allows safe manufacturing with a standard ESD control process.