TPS62840 60-nA IQ, 1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter | TI.com

TPS62840
ACTIVE
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
60-nA IQ, 1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter

60-nA IQ, 1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter - TPS62840
Datasheet
TPS62840 1.8-V to 6.5-V, 750-mA, 60-nA IQ Step-Down Converter datasheet (Rev. C)
 

Sample availability

Preproduction samples in DGR package are available (XPS62842DGRR). Request now

Description

The TPS62840 is a high efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 120 nA IQ in 100% mode to further extend battery life near the end of discharge.

The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode the device extends the light load efficiency down to a load current range of 1-µA and below.

16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components.

The device’s STOP pin immediately eliminates any switching noise in order to take a noise-free measurement in test & measurement systems.

The TPS6284x provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2 or 1S Li-Ion/Li-SOCl2.

Features

  • 60-nA operating quiescent current
  • 100% duty-cycle mode with 120-nA IQ
  • Input voltage range VIN from 1.8 V to 6.5 V
  • Output current up to 750 mA
  • RF friendly DCS-Control™
  • 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT)
  • 16 selectable output voltages via VSET pin
  • Auto transition PFM/PWM or forced-PWM mode
  • Selectable forced PWM and STOP modes
  • Output discharge function
  • 25-nA shutdown current
  • SON-8, WCSP-6 and thermally enhanced HVSSOP-8packages

All trademarks are the property of their respective owners.

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS62840

Part Number
  Min   Max Range
Vin –  V
Vout  V
Iout  A
Ambient Temp  °C -40 to 125°C

What are WEBENCH® tools?

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
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)
TPS62840 Order now 1.8     6.5     0.8     3.6     0.75     1     1800     1800     0.00006     Enable
Fixed Output
Forced PWM
Light Load Efficiency
Output Discharge
Over Current Protection
Soft Start Fixed
Synchronous Rectification
UVLO Fixed    		 DCS-Control     100     -40 to 125     Catalog     DSBGA | 6
HVSSOP | 8
VSON-HR | 8    		 Converter     6DSBGA: 1 mm2: 1.4 x 1 (DSBGA | 6)
8HVSSOP: 9 mm2: 3 x 3 (HVSSOP | 8)
8VSON-HR: 3 mm2: 1.5 x 2 (VSON-HR | 8)    
TPS62740 Order now 2.2     5.5     1.8     3.3     0.3     1     2000     2000     0.0003     Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification
Adaptive/Dynamic Voltage Scaling    		 Constant on-time (COT)
DCS-Control    		 100     -40 to 85     Catalog     WSON | 12     Converter     12WSON: 6 mm2: 3 x 2 (WSON | 12)    
TPS62743 Order now 2     5.5     1.2     3.3     0.3     1     1200     1200     0.0003     Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification
Adaptive/Dynamic Voltage Scaling    		 Constant on-time (COT)
DCS-Control    		 100     -40 to 85     Catalog     DSBGA | 8     Converter     See datasheet (DSBGA)    
TPS62745 Order now 3.3     10     1.8     3.3     0.3     1     2500     2500     0.0004     Adaptive/Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Power Good
Soft Start Fixed
Synchronous Rectification    		 Constant on-time (COT)
DCS-Control    		 100     -40 to 125     Catalog     WSON | 12     Converter     12WSON: 6 mm2: 3 x 2 (WSON | 12)    
TPS62808 Order now 1.8     5.5     1.8     3.3     0.6       1500     1500     0.0023     Enable
Forced PWM
Light Load Efficiency
Output Discharge
Over Current Protection
Synchronous Rectification
UVLO Fixed    		 DCS-Control     100     -40 to 125