Part: TPS62140, TPS62140A, TPS62141, TPS62142, TPS62143 — Texas Instruments

Type: Synchronous Step-Down DC-DC Converter

Description: A 3 V to 17 V input, up to 2 A synchronous step-down DC-DC converter optimized for high power density applications, featuring DCS-Control topology and adjustable output voltage from 0.9 V to 6 V.

Operating Conditions:

• Supply voltage: 3 V to 17 V
• Operating junction temperature: -40 to 125 °C
• Output voltage range: 0.9 V to 6 V (adjustable version)
• Switching frequency: Typically 2.5 MHz or 1.25 MHz (selectable)

Absolute Maximum Ratings:

• Max supply voltage (AVIN, PVIN): 20 V
• Max junction temperature: 150 °C
• Max storage temperature: 150 °C

Key Specs:

• Input voltage range: 3 V to 17 V
• Operating quiescent current (EN = High, I OUT = 0 mA, device not switching): 17 μA (typ)
• Shutdown current (EN = Low): 1.5 μA (typ)
• High-side MOSFET ON-resistance (V IN ≥ 6 V): 90 mΩ (typ)
• Low-side MOSFET ON-resistance (V IN ≥ 6 V): 40 mΩ (typ)
• High-side MOSFET forward current limit (V IN = 12 V, T A = 25°C): 3 A (typ), 3.5 A (max)
• Output voltage range (TPS62140): 0.9 V to 6.0 V
• Power-good threshold voltage (Rising): 95% V OUT (typ)

Features:

• DCS-Control ™ topology
• Input voltage range: 3 V to 17 V
• Up to 2-A output current
• Adjustable output voltage from 0.9 V to 6 V
• Pin-selectable output voltage (nominal, +5%)
• Programmable soft start and tracking
• Seamless power-save mode transition
• Quiescent current of 17 μA (typical)
• Selectable operating frequency
• Power-good output
• 100% duty-cycle mode
• Short-circuit protection
• Overtemperature protection
• Pin-to-pin compatible with the TPS62130 and TPS62150

Applications:

• Standard 12-V rail supplies
• POL supply from single or multiple Li-ion battery
• Solid-state drives
• Embedded systems
• LDO replacement
• Mobile PCs, tablets, modems, cameras
• Server, microserver
• Data terminal, point of sales (ePOS)

Package:

• VQFN-16 (3 mm × 3 mm)

• DCS-Control ™ topology
• Input voltage range: 3 V to 17 V
• Up to 2-A output current
• Adjustable output voltage from 0.9 V to 6 V
• Pin-selectable output voltage (nominal, +5%)
• Programmable soft start and tracking
• Seamless power-save mode transition
• Quiescent current of 17 μA (typical)
• Selectable operating frequency
• Power-good output
• 100% duty-cycle mode
• Short-circuit protection
• Overtemperature protection
• Pin-to-pin compatible with the TPS62130 and TPS62150
• Available in a 3-mm × 3-mm, VQFN-16 package
• Use the TPS82140 for faster designs

• Standard 12-V rail supplies
• POL supply from single or multiple Li-ion battery
• Solid-state drives
• Embedded systems
• LDO replacement
• Mobile PCs, tablets, modems, cameras
• Server, microserver
• Data terminal, point of sales (ePOS)

TPS62140ARGTR — 16-VFQFN Exposed Pad Pinout

Notes

• Pin diagram confirms pin numbering: SW occupies pins 1, 2, 3 (left side); PGND, PGND, VOS, EN occupy pins 16, 15, 14, 13 (top right); FB, AGND, FSW, DEF occupy pins 5, 6, 7, 8 (bottom left); PVIN, AVIN, SS/TR occupy pins 11, 10, 9 (right side); PG occupies pin 4 (left side).
• Pins 1, 2, 3 are all labeled SW and connect to the same internal switch node.
• Pins 11, 12 are both PVIN and should be connected to the same supply source.
• Pins 15, 16 are both PGND and should be connected to the same ground plane.
• FSW and DEF pins have internal pulldown resistors; floating pins default to logic low.
• Exposed thermal pad is electrically connected to AGND and PGND; soldering is mandatory for thermal and mechanical performance.

over operating junction temperature (TJ = -40°C to 125°C), typical values at VIN=12V and TA=25°C (unless otherwise noted)

over operating junction temperature range (unless otherwise noted)

over operating junction temperature range (unless otherwise noted)

The TPS62140 is a switched mode step-down converter, able to convert a 3-V to 17-V input voltage into a 0.9-V to 6-V output voltage, providing up to 2 A. It needs a minimum amount of external components. Apart from the LC output filter and the input capacitor, only the TPS62140 (TPS62140A) with an adjustable output voltage needs an additional resistive divider to set the output voltage level.