600-mA, 6-MHz, Vout 1.8V, 90% Efficiency Step-Down Converter - TPS62621

TPS62621 (ACTIVE)

600-mA, 6-MHz, Vout 1.8V, 90% Efficiency Step-Down Converter

Description

The TPS6262x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6262x supports up to 600mA load current, and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.3V to 5.5V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 1.2V to 2.3V.

The TPS6262x operates at a regulated 6-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

The PFM mode extends the battery life by reducing the quiescent current to 31µA (typ) during light load and standby operation. For noise-sensitive applications, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high.

The TPS6262x is available in an 6-pin chip-scale package (CSP).

Features

  • 90% Efficiency at 6MHz Operation
  • 31µA Quiescent Current
  • Wide VIN Range From 2.3V to 5.5V
  • 6MHz Regulated Frequency Operation
  • Best in Class Load and Line Transient
  • ±2% Total DC Voltage Accuracy
  • Automatic PFM/PWM Mode Switching
  • Low Ripple Light-Load PFM Mode
  • Internal Soft Start, 120-µs Start-Up Time
  • Integrated Active Power-Down Sequencing (Optional)
  • Current Overload and Thermal Shutdown Protection
  • Three Surface-Mount External Components Required
    (One MLCC Inductor, Two Ceramic Capacitors)
  • Complete Sub 1-mm Component Profile Solution
  • Total Solution Size <12 mm2
  • Available in a 6-Pin NanoFree (CSP)
    Regular and Ultra-Thin Packaging

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
Preset Vout (V)
Vref Accuracy (Typ) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS62621 TPS62612 TPS62615 TPS62616 TPS62619 TPS62620 TPS62622 TPS62623 TPS62624 TPS62625
1     1     1     1     1     1     1     1     1     1    
2.3     2.3     2.3     2.3     2.3     2.3     2.3     2.3     2.3     2.3    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5    
1.8     1.5     1.2     2.15     1.8     1.82     1.5     1.225     1.2     1.2    
1.8     1.5     1.2     2.15     1.8     1.82     1.5     1.225     1.2     1.2    
0.6     0.35     0.35     0.35     0.35     0.6     0.6     0.6     0.6     0.6    
Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck    
6600     6600     6600     6600     6600     6600     6600     6600     6600     6600    
1.1     1.1     1.1     1.1     1.1     1.1     1.1     1.1     1.1     1.1    
0.031     0.031     0.031     0.031     0.031     0.031     0.031     0.031     0.031     0.031    
100     100     100     100     100     100     100     100     100     100    
Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed    
Internal     Internal     Internal     Internal     Internal     Internal     Internal     Internal     Internal     Internal    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
1.8     1.5     1.2     2.15     1.8     1.82     1.5     1.225     1.2     1.2    
2     2     2     2     2     2     2     2     2     2    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
6DSBGA     6DSBGA     6DSBGA     6DSBGA     6DSBGA     6DSBGA     6DSBGA     6DSBGA     6DSBGA     6DSBGA    
0.65 | 1ku     0.50 | 1ku     0.50 | 1ku     0.50 | 1ku     0.50 | 1ku     0.65 | 1ku     0.65 | 1ku     0.65 | 1ku     0.65 | 1ku     0.65 | 1ku    

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