TPS621361RGXR

Part: TPS621361RGXR (TPS6213x family) — Texas Instruments

Type: Synchronous Step-Down (Buck) Converter

Description: 3–17 V input, 3 A synchronous step-down converter with DCS-Control topology, 0.9–6 V adjustable output, about 2.5 MHz switching frequency and 17 μA typical quiescent current in a 3 mm × 3 mm 16-pin VQFN package.

Operating Conditions:

• Supply voltage: 3–17 V (AVIN and PVIN)
• Operating junction temperature: -40 to 125 °C
• Output voltage range: 0.9–6.0 V (TPS62130, VIN ≥ VOUT)
• Selectable switching frequency: about 2.5 MHz (FSW low) or 1.25 MHz (FSW high)

Absolute Maximum Ratings:

• Max supply voltage: 20 V (AVIN, PVIN)
• Max junction temperature: 150 °C
• Storage temperature: -65 to 150 °C
• PG sink current: 10 mA

Key Specs:

• Quiescent current (EN = high, IOUT = 0 mA, not switching): 17 μA typ, 30 μA max
• Shutdown current (EN = low): 1.5 μA typ
• UVLO threshold (falling input voltage): 2.6 / 2.7 / 2.8 V (min/typ/max)
• 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) at VIN = 12 V, TA = 25 °C
• Feedback reference voltage accuracy (PWM mode, VIN ≥ VOUT + 1 V): 785.6 / 800 / 814.4 mV
• Power-good threshold: 95% VOUT typ rising, 90% VOUT typ falling
• SS/TR source current: 2.5 μA typ
• Thermal resistance RθJA: 45 °C/W
• Load regulation: 0.05 %/A; line regulation: 0.02 %/V

Features:

• DCS-Control topology with seamless power save mode transition
• Up to 3 A output current
• Adjustable output voltage (0.9–6 V) or fixed versions of 1.8 V, 3.3 V and 5.0 V
• Pin-selectable output voltage (nominal or +5%)
• Programmable soft start and tracking
• Selectable operating frequency
• Power-good output (open drain)
• 100% duty cycle mode
• Short circuit and overtemperature protection
• Pin-to-pin compatible with the TPS62140 and TPS62150

Applications:

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

Package:

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

• DCS-Control ™ topology
• Input voltage range: 3 V to 17 V
• Up to 3-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 TPS62140 and TPS62150
• Available in a 3-mm × 3-mm, QFN-16 package
• Use the TPS82130 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)

Typical Application Schematic

Figure 6-1. 16-Pin VQFN With Exposed Thermal Pad (RGT) Top View

Table 6-1. Pin Functions

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

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

over operating junction temperature range (unless otherwise noted)

over operating junction temperature range (unless otherwise noted)

The TPS6213x is a switched mode step-down converter that is able to convert a 3V- to 17-V input voltage into a 0.9-V to 6-V output voltage, providing up to 3 A. The device 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.