TPS62821 1A Step-Down Converter With 1% Accuracy in 1.5x2mm QFN | TI.com

TPS62821 (ACTIVE)

1A Step-Down Converter With 1% Accuracy in 1.5x2mm QFN

 

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  • TLV62568  -  Looking for 1A in leaded package?

Description

The TPS6282x is an all-purpose and easy to use synchronous step-down DC-DC converter with a very low quiescent current of only 4µA. It supplies up to 3A output current (TPS62823) from a 2.4V to 5.5V input voltage. Based on the DCS-Control™ topology it provides a fast transient response.

The internal reference allows to regulate the output voltage down to 0.6V with a high feedback voltage accuracy of 1% over the junction temperature range of -40°C to 125°C. The 1,2,3A scalable pin-to-pin and BOM-to-BOM compatible device family can be used with small 470nH inductors.

The TPS6282x include an automatically entered power save mode to maintain high efficiency down to very light loads.

The device features a Power Good signal and an internal soft start circuit. It is able to operate in 100% mode. For fault protection, it incorporates a HICCUP current limit as well as a thermal shutdown.

The TPS6282x are packaged in a 2 x 1.5mm QFN-8 package.

Features

  • DCS-Control™ topology
  • 26/25mΩ Internal Power Switches (TPS62823)
  • Up to 3A Output Current (TPS62823)
  • Very Low Quiescent Current of 4 µA
  • Switching Frequency of typically 2.2 MHz
  • 1% Feedback Voltage Accuracy (full temp. range)
  • Enable (EN) and Power Good (PG)
  • Adjustable Output Voltage from 0.6 V to 4V
  • 100% Duty-Cycle Mode
  • Internal Soft-Start Circuitry
  • Seamless Power Save Mode Transition
  • Undervoltage Lockout
  • Active Output Discharge
  • Cycle-by-Cycle Current Limit
  • HICCUP Short-Circuit Protection
  • Over Temperature Protection
  • Create a Custom Design using the TPS62822 with the WEBENCH® Power Designer

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WEBENCH® Designer TPS62821

  Min   Max Range
Vin  V 2.4 to 5.5V
Vout  V 0.6 to 5.4V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°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)
TPS62821 Order now 2.4     5.5     0.6     4     1     1     2200     2200     0.004     Enable
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Constant on-time (COT)
DCS-Control    
100     -40 to 125     Catalog     VSON-HR | 8     Converter     8VSON-HR: 3 mm2: 1.5 x 2 (VSON-HR | 8)    
TLV62568 Order now 2.5     5.5     0.6     5.5     1     1     1500     1500     0.035     Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Constant on-time (COT)     100     -40 to 125     Catalog     SOT-23-THIN | 6
SOT-23 | 5
SOT-5X3 | 6    
Converter     5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
6SOT-23-THIN: 8 mm2: 2.8 x 2.9 (SOT-23-THIN | 6)
6SOT-5X3: 2 mm2: 1.2 x 1.6 (SOT-5X3 | 6)    
TLV62585 Order now 2.5     5.5     0.6     5.5     3     1     1500     1600     0.04     Enable
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed    
Current Mode     100     -40 to 125     Catalog     SOT-5X3 | 6
VQFN-HR | 12    
Converter     6SOT-5X3: 2 mm2: 1.2 x 1.6 (SOT-5X3 | 6)
12VQFN-HR: 4 mm2: 2 x 2 (VQFN-HR | 12)    
TPS62088 Order now 2.4     5.5     0.6     4     3     1     4000     4000     0.004     Enable
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Synchronous Rectification    
Constant on-time (COT)
DCS-Control    
100     -40 to 125     Catalog     DSBGA | 6     Converter     See datasheet (DSBGA)    
TPS62672 Order now 2.3     4.8     1.5     1.5     0.5     1     5400     6600     0.017