High Efficiency  Nanopower Buck Converter with 50mA Load Capability | Step-Down - TPS62736

TPS62736 (ACTIVE)

High Efficiency Nanopower Buck Converter with 50mA Load Capability | Step-Down

Description

The TPS6273X family provides a highly integrated ultra low power buck converter solution that is well suited for meeting the special needs of ultra low power applications such as energy harvesting. The TPS6273X provides the system with an externally programmable regulated supply in order to preserve the overall efficiency of the power management stage compared to a linear step down converter. This regulator is intended to step down the voltage from an energy storage element such as a battery or super capacitor in order to supply the rail to low voltage electronics. The regulated output has been optimized to provide high efficiency across low output currents (<10 µA) to high currents (200 mA).

The TPS6273X integrates an optimized hysteretic controller for low power applications. The internal circuitry utilizes a time based sampling system in order to reduce the average quiescent current.

To further assist users in the strict management of their energy budgets, the TPS6273X toggles the input power good indicator to signal an attached microprocessor when the voltage on the input supply has dropped below a pre-set critical level. This signal is intended to trigger the reduction of load currents to prevent the system from entering an under-voltage condition. There are also independent enable signals to allow the system to control whether the converter is regulating the output, only monitoring the input voltage, or shut down in an ultra-low quiescent sleep state.

The input power good threshold and output regulator levels are programmed independently via external resistors.

All the capabilities of TPS6273X are packed into a small foot-print 14-lead 3.5mm x 3.5 mm QFN package (RGY).

Features

  • Industry's highest efficiency at low output currents: > 90% with IOUT = 15 µA
  • Ultra-Low Power Buck Converter
    • TPS62736 Optimized for 50 mA Output Current
    • TPS62737 Optimized for 200mA Output Current
    • 1.3 V – 5 V Resistor Programmable Output Voltage Range
    • 2 V – 5.5 V Input Operating Range
    • 380 nA / 375 nA Quiescent Current During Active Operation for TPS62736 / TPS62737
    • 10 nA Quiescent Current During Ship Mode Operation
    • 2% Voltage Regulation Accuracy
  • 100% Duty Cycle (Pass Mode)
  • EN1 and EN2 Control
    • Two Power off states:1) Shipmode (full power off state)2) Standby mode includes VIN_OK Indication
  • Input Power Good Indication (VIN_OK)
    • Push-pull Driver
    • Resistor Programmable Threshold Level

View more

Parametrics Compare all products in Step-Down (Buck) Converter

 
Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Topology
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Compensation
Special Features
Brand
Control Mode
Vref Accuracy (Typ) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS62736 TPS62737 TPS62240 TPS62260 TPS62120 TPS53318 TPS54620 TPS53353 TPS53355 TLV62150 TPS53915 TPS54226 TLV62150A
1     1     1     1     1     1     1     1     1     1     1     1     1    
2     2     2     2     2     1.5     4.5     1.5     1.5     4     1.5     4.5     4    
5.5     5.5     6     6     15     22     17     15     15     17     18     18     17    
1.3     1.3     0.6     0.6     1.2     0.6     0.8     0.6     0.6     0.9     0.6     0.76     0.9    
  5     6     6     5.5     5.5     15     5.5     5.5     5.25     5.5     5.5     5.25    
0.05     0.2     0.3     0.6     0.075     8     6     20     30     1     12     2     1    
Buck     Buck     Buck     Buck     Buck
Inverting Buck-Boost    
Buck     Buck     Buck     Buck     Buck
Inverting Buck-Boost    
Buck     Buck     Buck
Inverting Buck-Boost    
2000     2000     2500     2500       1000     1600     1000     1000     2500     1000     700     2500    
    0.7     1     0.25     8     8     28     40     1.7       3.1     1.7    
0.00035     0.000375     0.015     0.015     0.011     0.32     0.6     0.32     0.32     0.019     1.35     0.8     0.019    
    100     100     100     90     98     90     90     100       90     100    
    Fixed     Fixed     Fixed     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
    Internal     Internal     Internal     Not Needed     External     Not Needed     Not Needed     Internal     Not Needed     Not Needed     Internal    
    Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Enable
Frequency Synchronization
Power Good
Tracking
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Tracking
Voltage Margining    
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Power Good
Synchronous Rectification
Voltage Margining    
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining    
        DCS-Control     SWIFT     SWIFT     SWIFT     SWIFT     DCS-Control     SWIFT       DCS-Control    
    Voltage Mode     Voltage Mode       D-CAP     Current Mode     D-CAP     D-CAP       D-CAP3     D-CAP2      
    1.5     1.5     2.5     1     1     1     1     2.5     0.5     1     2.5    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -20 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 150     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
14VQFN     14VQFN     5SOT
6SON    
5SOT
6SON    
8SOT-23     22LSON-CLIP     14VQFN     22LSON-CLIP     22LSON-CLIP     16QFN     28VQFN-CLIP     14HTSSOP
16QFN    
16QFN    
0.80 | 1ku     1.00 | 1ku     0.50 | 1ku     0.65 | 1ku     0.65 | 1ku     3.05 | 1ku     2.50 | 1ku     3.50 | 1ku     3.75 | 1ku     0.75 | 1ku     3.00 | 1ku     0.75 | 1ku     0.75 | 1ku    

Related end equipment

  • Ultra Low Power Applications
  • 2-Cell and 3-Cell Alkaline-Powered Applications
  • Energy Harvesting
  • Solar Charger
  • Thermal Electric Generator (TEG) Harvesting
  • Wireless Sensor Networks (WSN)
  • Low Power Wireless Monitoring
  • Environmental Monitoring
  • Bridge and Structural Health Monitoring (SHM)
  • Smart Building Controls
  • Portable and Wearable Health Devices
  • Entertainment System Remote Controls

Click Here