LTC3204

Low Noise Regulated Charge Pump in 2 × 2 DFN

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Overview

Features and Benefits
Product Details

Features and Benefits

Fixed 3.3V or 5V Outputs
V_IN Range:

1.8V to 4.5V (LTC3204-3.3/LTC3204B-3.3)
2.7V to 5.5V (LTC3204-5/LTC3204B-5)

Output Current:
- Up to 150mA (LTC3204-5/LTC3204B-5)
- Up to 50mA (LTC3204-3.3/LTC3204B-3.3)
Automatic Burst Mode^® Operation with IQ = 48µA (LTC3204-3.3/LTC3204-5)
Constant Frequency Operation at All Loads (LTC3204B-3.3/LTC3204B-5)
Low Noise Constant Frequency (1.2MHz) Operation*
Built-In Soft-Start Reduces Inrush Current
Shutdown Disconnects Load from Input
Shutdown Current <1µA
Short-Circuit/Thermal Protection
Available in Low Profile 6-Lead DFN Package

Product Details

The LTC3204-3.3/LTC3204-5/LTC3204B-3.3/LTC3204B-5 are low noise, constant frequency (1.2MHz) switched capacitor voltage doublers. The LTC3204-3.3/ LTC3204B-3.3 can produce a regulated output voltage of 3.3V from a minimum input voltage of 1.8V (2 alkaline cells) whereas the LTC3204-5/LTC3204B-5 can produce 5V from a minimum of 2.7V (Li-Ion battery) input.

LTC3204-3.3/LTC3204-5 feature automatic Burst Mode^® operation at light loads to maintain low supply current whereas LTC3204B-3.3/LTC3204B-5 feature constant frequency operation at any load. Built-in soft-start circuitry prevents excessive inrush current during start-up. Thermal shutdown and current-limit circuitry allow the parts to survive a continuous short-circuit from V_OUT to GND.

High switching frequency minimizes overall solution footprint by allowing the use of tiny ceramic capacitors. In shutdown, the load is disconnected from the input and the quiescent current is reduced to <1µA.

The LTC3204-3.3/LTC3204-5/LTC3204B-3.3/LTC3204B-5 are available in a low proﬁle (0.75mm) 6-lead 2mm × 2mm DFN package.

*Protected by U.S. Patents including 6411531.

Applications

2 AA Cell to 3.3V
Li-Ion to 5V
USB On-The-Go Devices
White LED Drivers
Handheld Devices

Product Categories

Power Management
- Regulated Buck-Boost Charge Pumps

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Product Lifecycle Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (4)

DC761A-A

LTC3204EDC-5 Demo Board | Low Noise Regulated Charge Pump in 2x2 DFN, Burst Mode, V_IN = 2.7V–5.5V, V_OUT = 5V/(65–150mA)

DC916A-B

LTC3204BEDC-3.3 Demo Board | Low Noise Regulated Charge Pump in 2x2 DFN, V_IN = 1.8V to 4.5V, V_OUT = 3.3V/(40 to 50mA Max)

DC916A-A

LTC3204BEDC-5 Demo Board | Low Noise Regulated Charge Pump 2x2 DFN, V_IN = 2.7V to 5.5V, V_OUT = 5V/(65 to 150mA Max)

DC761A-B

LTC3204EDC-3.3 Demo Board | Low Noise Regulated Charge Pump in 2 × 2 DFN, Burst Mode, V_IN = 1.8V to 4.5V, V_OUT = 3.3V/(40mA to 50mA Max)

DC761A-A

View Detailed Evaluation Kit Information

Demonstration circuit 761 is a low noise regulated charge pump featuring the LTC3204 (Burst Mode operation) in the 2X2 DFN package. There are two assembly versions, DC761A-A and DC761A-B for the LTC3204-5 (5V output) and LTC3204-3.3 (3.3V output) respectively. The DC761A-A produces a regulated 5V output from a 2.7V to 5.5V input. The guaranteed output load current is 150mA for V_IN between 3.1V and 5.5V, and 65mA for V_IN less than 3.1V. The DC761A-B produces a regulated 3.3V output from a 1.8V to 4.5V input. The guaranteed output current is 50mA from V_IN between 1.9V and 4.5V, and 40mA for V_IN less than 1.9V.

The circuit requires only three tiny 0603 surface mount capacitors and uses minimal board space. No inductor or diodes are needed. The circuit features automatic Burst Mode^® operation at light loads to maintain low supply current.

Resources

DC916A-B

View Detailed Evaluation Kit Information

Demonstration circuit 916 is a low noise regulated charge pump featuring the LTC3204B (constant frequency switching) in the 2X2 DFN package. There are two assembly versions, DC916A-A and DC916A-B for the LTC3204B-5 (5V output) and LTC3204B-3.3 (3.3V output) respectively. The DC916A-B produces a regulated 3.3V output from a 1.8V to 4.5V input. The guaranteed output current is 50mA from V_IN between 1.9V and 4.5V, and 40mA for V_IN less than 1.9V.

Resources

DC916A-A

View Detailed Evaluation Kit Information

Demonstration circuit 916 is a low noise regulated charge pump featuring the LTC3204B (constant frequency operation) in the 2X2 DFN package. There are two assembly versions, DC916A-A and DC916A-B for the LTC3204B-5 (5V output) and LTC3204B-3.3 (3.3V output) respectively. The DC916A-A produces a regulated 5V output from a 2.7V to 5.5V input. The guaranteed output load current is 150mA for V_IN between 3.1V and 5.5V, and 65mA for V_IN less than 3.1V.

Resources

DC761A-B

View Detailed Evaluation Kit Information

Demonstration circuit 761 is a low noise regulated charge pump featuring the LTC3204 (Burst Mode operation) in the 2 × 2 DFN package. There are two assembly versions, DC761A-A and DC761A-B for the LTC3204-5 (5V output) and LTC3204-3.3 (3.3V output) respectively. The DC761A-B produces a regulated 3.3V output from a 1.8V to 4.5V input. The guaranteed output current is 50mA from V_IN between 1.9V and 4.5V, and 40mA for V_IN less than 1.9V.

Resources

Documentation & Resources

Data Sheet

LTC3204: Low Noise Regulated Charge Pump in 2 × 2 DFN Data Sheet
11/9/2007
PDF

Reliability Data

R415 Reliability Data
3/23/2018
PDF

User Guide

DC916A - Demo Manual
9/24/2009
PDF
DC761A - Demo Manual
9/24/2009
PDF

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

LTspice downloads and documentation

LTspice Simulations

LTC3204-3.3 Demo Circuit - Low Noise Regulated Charge Pump (1.8-4.5V to 3.3V @ 50mA)

LTC3204-5 Demo Circuit - Low Noise Regulated Charge Pump (2.7-5.5V to 5V @ 150mA)

Models for the following parts are available in LTspice:

LTC3204-3.3

LTC3204-5

LTC3204B-3.3

LTC3204B-5

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number	Material Declaration	Reliability Data	Pin/Package Drawing	CAD Symbols, Footprints & 3D Models
LTC3204BEDC-3.3#TRMPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
LTC3204BEDC-3.3#TRPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
LTC3204BEDC-5#TRMPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
LTC3204BEDC-5#TRPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
LTC3204EDC-3.3#TRMPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
LTC3204EDC-3.3#TRPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
LTC3204EDC-5#TRMPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
LTC3204EDC-5#TRPBF	Material Declaration	Reliability Data	6-Lead DFN (2mm x 2mm w/ EP)	Ultra Librarian SamacSys
Wafer Fabrication Data		R415 Reliability Data

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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.