TPS62811-Q1 Automotive 2.75-V to 6-V, 1-A step-down converter in a 2mm x 3mm wettable-flanks QFN package | TI.com

TPS62811-Q1
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Automotive 2.75-V to 6-V, 1-A step-down converter in a 2mm x 3mm wettable-flanks QFN package

 

Description

The TPS6281x-Q1 is family of pin-to-pin 1-A, 2-A, 3-A and 4-A synchronous step-down DC/DC converters. All devices offer high efficiency and ease of use. The TPS6281x-Q1 family is based on a peak current mode control topology. TPS6281x-Q1 is designed for automotive applications such as Infotainment and advanced driver assistance systems. Low resistive switches allow up to 4-A continuous output current at high ambient temperature. The switching frequency is externally adjustable from 1.8 MHz to 4 MHz and can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, the TPS6281x-Q1 automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. The TPS6281x-Q1 provide 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or forming tracking of the output voltage to an external source. This allows external sequencing of different supply rails and limiting the inrush current during start-up.

The TPS6281x-Q1 is available in a 3-mm x 2-mm VQFN package with wettable flanks.

Features

  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1:
      –40°C to +125°C TA
  • Input voltage range: 2.75 V to 6 V
  • Family of 1 A, 2 A, 3 A and 4 A
  • Quiescent current 15-µA typical
  • Output voltage from 0.6 V to 5.5 V
  • Output voltage accuracy ±1% (PWM operation)
  • Adjustable soft-start
  • Forced PWM or PWM and PFM operation
  • Adjustable switching frequency of
    1.8 MHz to 4 MHz
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Spread spectrum clocking - optional
  • Fold-back overcurrent protection - optional
  • Power good output with window comparator
  • Package with wettable flanks

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Part Number
  Min   Max Range
Vin  V
Vout  V
Iout  A
Ambient Temp  °C -40 to 150°C

Parametrics

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Part number Order 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)
TPS62811-Q1 Order now 2.7     6     0.6     5.5     1     1     1800     4000     0.015     Enable
Forced PWM
Frequency Synchronization
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Spread Spectrum
Synchronous Rectification
Tracking
UVLO Fixed
Wettable Flanks Package    
Current Mode     100     -40 to 125     Automotive     VQFN-HR | 9     Converter     9VQFN-HR: 6 mm2: 2 x 3 (VQFN-HR | 9)    
TPS62810-Q1 Order now 2.7     6     0.6     5.5     4     1     1800     4000     0.015     Enable
Forced PWM
Frequency Synchronization
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Spread Spectrum
Synchronous Rectification
Tracking
UVLO Fixed
Wettable Flanks Package    
Current Mode     100     -40 to 125     Automotive     VQFN-HR | 9     Converter     9VQFN-HR: 6 mm2: 2 x 3 (VQFN-HR | 9)    
TPS62812-Q1 Order now 2.7     6     0.6     5.5     2     1     1800     2250     0.015     Enable
Forced PWM
Frequency Synchronization
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Spread Spectrum
Synchronous Rectification
Tracking
UVLO Fixed
Wettable Flanks Package    
Current Mode     100     -40 to 125     Automotive     VQFN-HR | 9     Converter     9VQFN-HR: 6 mm2: 2 x 3 (VQFN-HR | 9)    
TPS62813-Q1 Order now 2.7     6     0.6     5.5     3     1     1800     4000     0.015     Enable
Forced PWM
Frequency Synchronization
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Spread Spectrum
Synchronous Rectification
Tracking
UVLO Fixed
Wettable Flanks Package    
Current Mode     100     -40 to 125     Automotive     VQFN-HR | 9     Converter     9VQFN-HR: 6 mm2: 2 x 3 (VQFN-HR | 9)