TPS51312 3.1V to 5.5V Input, DCAP2 Mode, 3A, 900KHz Integrated Step-Down Converter | TI.com

TPS51312 (ACTIVE)

3.1V to 5.5V Input, DCAP2 Mode, 3A, 900KHz Integrated Step-Down Converter

 

Description

The TPS51312 is a high-efficiency, synchronous, step-down DC/DC converter. It supports 3-A (maximum) of dc output current at output voltages from 0.6 V to 3.3 V. The D-CAP2 mode adaptive on-time control allows a small footprint when designed using all ceramic output capacitors and offers a low external component count. The device also features auto-skip function at light load condition, pre-biased start-up and internally fixed soft-start time. When the device is disabled, the output capacitor is discharged through internal resistor.

The TPS51312 is available in a 3 mm x 3 mm, 10-pin DRC package (Green RoHS compliant and Pb free) and is specified between –40°C and 85°C.

Features

  • D-CAP2 Mode Enables Fast Transient Response
  • No External Compensation Required
  • Input Voltage VIN Range: 3.1 V to 5.5 V
  • Bias Voltage VCC Range: 3.1 V to 5.5 V
  • Output Voltage Range: 0.6 V to 3.3 V
  • 0.6-V, 1% Voltage Reference Accuracy
  • Fixed Voltage Servo Soft-Start Function
  • Auto-Skip, Eco-mode for High Efficiency at Light Loads
  • Switching Frequency: 900-kHz
  • UVLO, UVP, OTP and OVP Power Good Output
  • Cycle-By-Cycle Current Limit, Latch-off OCP
  • Thermally Enhanced 3 mm x 3 mm, 10-pin SON (DRC)

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Parametrics Compare all products in Buck converters (integrated switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control mode
Duty cycle (Max) (%)
Operating temperature range (C)
Rating
Package Group
Type
Package size: mm2:W x L (PKG)
TPS51312 TPS51313 TPS53311 TPS53313
3.1     3.1     2.9     4.5    
5.5     5.5     6     16    
0.6     0.6     0.6     0.6    
3.3     3.3     4.2     10    
3     3     3     6    
1     1     1     1    
900     1000     1100     250    
900     1000     1100     1500    
0.8     0.8     0.32     0.32    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP2     D-CAP2     Voltage Mode     Voltage Mode    
90     90     99     99    
-40 to 85     -10 to 85     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog     Catalog    
VSON | 10     VSON | 10     VQFN | 16     VQFN | 24    
Converter     Converter     Converter     Converter    
10VSON: 9 mm2: 3 x 3 (VSON | 10)     10VSON: 9 mm2: 3 x 3 (VSON | 10)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)