TPS62133RGTR

Part: TPS62133RGTR (TPS6213x family) — Texas Instruments

Type: Synchronous Step-Down (Buck) Converter

Description: 3–17 V input, 3 A synchronous step-down converter with a fixed 5.0 V output (TPS62133), DCS-Control topology, 2.5 MHz typical switching frequency and 17 μA typical quiescent current in a 3×3 mm QFN-16 package.

Operating Conditions:

• Supply voltage: 3–17 V (AVIN and PVIN)
• Operating temperature: -40 to 85 °C (free-air, TA); junction -40 to 125 °C
• Switching frequency: about 2.5 MHz (FSW low) or 1.25 MHz (FSW high)
• Output current: up to 3 A

Absolute Maximum Ratings:

• Max supply voltage (AVIN, PVIN): 20 V
• EN, SS/TR, SW pins: -0.3 to VIN + 0.3 V
• DEF, FSW, FB, PG, VOS pins: -0.3 to 7 V
• PG sink current: 10 mA
• Operating junction temperature: -40 to 125 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• Quiescent current (EN high, IOUT = 0 mA, not switching): 17 μA typ, 25 μA max
• Shutdown current (EN low): 1.5 μA typ, 4 μA max
• UVLO falling threshold: 2.7 V typ (2.6–2.8 V), 200 mV hysteresis
• High-side MOSFET RDS(on): 90 mΩ typ, 170 mΩ max (VIN ≥ 6 V)
• Low-side MOSFET RDS(on): 40 mΩ typ, 70 mΩ max (VIN ≥ 6 V)
• High-side forward current limit: 3.6 / 4.2 / 4.9 A (min/typ/max; VIN = 12 V, TA = 25 °C)
• Output voltage accuracy (PWM mode, VIN ≥ VOUT + 1 V): -1.8% to +1.8%
• Internal reference: 0.8 V; SS/TR source current 2.5 μA typ
• Power good threshold: 95% VOUT rising, 90% falling (typ)
• Thermal shutdown: 160 °C typ, 20 °C hysteresis
• RθJA: 29.1 °C/W

Features:

• DCS-Control topology with seamless Power Save Mode transition
• Pin-selectable output voltage (nominal or +5%)
• Programmable soft start and tracking
• Selectable operating frequency
• Power good output
• 100% duty cycle mode
• Short circuit and over temperature protection

Applications:

• Standard 12 V rail supplies
• POL supply from single or multiple Li-Ion batteries
• Solid-state disk drives
• Embedded systems
• LDO replacement
• Mobile PCs, tablets, modems, cameras

Package:

• VQFN-16 (RGT), 3.00 mm × 3.00 mm, with exposed thermal pad

TPS62130, TPS62130A, TPS62131, TPS62132, TPS62133

SLVSAG7C -NOVEMBER 2011-REVISED JANUARY 2015

• Standard 12V Rail Supplies
• POL Supply from Single or Multiple Li-Ion Battery
• Solid-State Disk Drives
• Embedded Systems
• LDO replacement
• Mobile PCs, Tablet, Modems, Cameras

The TPS6213X family is an easy to use synchronous step down DC-DC converter optimized for applications with high power density. A high switching frequency of typically 2.5MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by use of the DCSControl™ topology.

With their wide operating input voltage range of 3V to 17V, the devices are ideally suited for systems powered from either a Li-Ion or other batteries as well as from 12V intermediate power rails. It supports up to 3A continuous output current at output voltages between 0.9V and 6V (with 100% duty cycle mode). The output voltage startup ramp is controlled by the soft-start pin, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the Enable and open-drain Power Good pins.

In Power Save Mode, the devices draw quiescent current of about 17 μ A from VIN. Power Save Mode, entered automatically and seamlessly if load is small, maintains high efficiency over the entire load range. In Shutdown Mode, the device is turned off and shutdown current consumption is less than 2 μ A.

The device, available in adjustable and fixed output voltage versions, is packaged in a 16-pin VQFN package measuring 3 × 3 mm (RGT).

16-Pin VQFN With Exposed Thermal Pad (RGT) Top View

Pin Functions

• (1) For more information about connecting pins, see Detailed Description and Application and Implementation sections.
• (2) Connect FSW to VOUT or PG in this case.
• (3) An internal pull-down resistor keeps logic level low, if pin is floating.

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SLVSAG7C -NOVEMBER 2011-REVISED JANUARY 2015

over free-air temperature range (TA=-40°C to +85°C), typical values at VIN=12V and TA=25°C (unless otherwise noted)

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

The TPS6213X is a switched mode step-down converter, able to convert a 3V to 17V input voltage into a 0.9V to 6V output voltage, providing up to 3A. It needs a minimum amount of external components. Apart from the LC output filter and the input capacitors, only the TPS62130 (TPS62130A) with adjustable output voltage needs an additional resistive divider to set the output voltage level.