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See Technical Specifications

TPS60311DGS

Charge Pump Switching Regulator IC Positive Fixed 2Vin, 3V 2 Output 40mA, 20mA 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TPS60311DGS
Datasheet:

TPS60311DGS Datasheet (PDF)
Function:

Ratiometric, Step-Up
Output Configuration:

Positive
Topology:

Charge Pump
Output Type:

Fixed
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TPS60311DGS General 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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Key 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 V_I (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

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	-
Function	Ratiometric, Step-Up	Output Configuration	Positive
Topology	Charge Pump	Output Type	Fixed
Number of Outputs	2	Voltage - Input (Min)	0.9V
Voltage - Input (Max)	1.8V	Voltage - Output (Min/Fixed)	2Vin, 3V
Voltage - Output (Max)	-	Current - Output	40mA, 20mA
Frequency - Switching	700kHz	Synchronous Rectifier	No
Operating Temperature	-40°C ~ 125°C (TJ)	Mounting Type	Surface Mount
Base Product Number	TPS60311	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 (#)	2	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
Rating	Catalog	Type	Charge pump
Pin Count	10	Released Date	Jun 8, 2021
Last Modified Date	Mar 7, 2023 4:10 PM UTC