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Product details

Parameters

Vin (Min) (V) 0.9 Vin (Max) (V) 1.8 Vout (Min) (V) 3 Vout (Max) (V) 3 Iout (Max) (A) 0.02 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 470 Switching frequency (Max) (kHz) 900 Iq (Typ) (mA) 0.002 Features Power Good Operating temperature range (C) -40 to 85 Type Charge Pump Rating Catalog open-in-new Find other Charge pumps (inductorless)

Package | Pins | Size

VSSOP (DGS) 10 9 mm² 3 x 3 open-in-new Find other Charge pumps (inductorless)

Features

  • Regulated 3-V or 3.3-V Output Voltage With up to 20-mA Output Current From a 0.9-V to 1.8-V Input Voltage Range
  • High Power Conversion Efficiency (up to 90%) Over Wide Output Current Range, Optimized for 1.2-V Battery Voltage
  • Snooze Mode for Improved Efficiency at Low-Output Current
  • Additional Output With 2 Times VI (OUT1)
  • Device Quiescent Current Less Than 2 uA
  • Supervisor Included; Open Drain or Push-Pull Power Good Output
  • No Inductors Required/Low EMI
  • Only Five Small, 1-uF Ceramic Capacitors Required
  • Microsmall 10-Pin MSOP Package
  • applications
    • Pagers
    • Battery-Powered Toys
    • Portable Measurement Instruments
    • Home Automation Products
    • Medical Instruments (Like Hearing Instruments)
    • Metering Applications Using MSP430 Microcontroller
    • Portable Smart Card Readers

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Description

The TPS6031X step-up, regulated charge pumps generate a 3-V ±4% or 3.3-V ±4% output voltage from a 0.9-V to 1.8-V input voltage (one alkaline, NiCd, or NiMH battery).

Only five small 1-uF ceramic capacitors are required to build a complete high-efficiency dc/dc charge pump converter. To achieve the high efficiency over a wide input voltage range, the charge pump automatically selects between a 3x or 4x conversion mode.

Output 1 (OUT1) can deliver a maximum of 40 mA, from a 1-V input, with output 2 (OUT2) not loaded. OUT2 can deliver a maximum of 20 mA, from a 1-V input, with OUT1 not loaded. Both outputs can be loaded at the same time, but the total output current of the first voltage doubler must not exceed 40 mA. For example, the load at OUT1 is 20 mA and the load at output 2 is 10 mA.

In snooze mode, the devices operate with a typical operating current of 2 uA, while the output voltage is maintained at 3.3 V ±10% or 3 V ±10%, respectively. This is lower than the self-discharge current of most batteries. Load current in snooze mode is limited to 2 mA. If the load current increases above 2 mA, the output voltage drops further and the devices automatically exits the snooze mode and operate in normal mode to regulate to the nominal output voltage with higher output currents. The device is set into the snooze mode by taking the SNOOZE\ pin low, and is set into normal operating mode by taking the SNOOZE\ pin high.

A power-good function supervises the output voltage of OUT2 and can be used for power up and power down sequencing. Power-good (PG) is offered as either open-drain or push-pull output.

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Technical documentation

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Type Title Date
* Datasheet Single-Cell to 3.0-V/3.3-V, 20-mA, Dual Output, High-Efficiency Charge Pump with datasheet (Rev. A) Aug. 23, 2001
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 2017
Technical articles Painting a picture for powering high-performance FPGAs Sep. 05, 2013
Technical articles Analog Applications Spotlight: Mark Pieper Jun. 06, 2013
Technical articles How to choose an LDO or switching regulator May 08, 2013
Technical articles Engineer It Video Series: Testing Power Supplies Mar. 26, 2013
Application notes Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application notes Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011
Application notes TPS6031x Evaluation Using the TPS6030xEVM Mar. 05, 2003
User guides TPS6030x EVM-170 Single-Cell Charge Pump Evaluation Module Jan. 30, 2001

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