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LT1613CS5#TRMPBF

ADILT1613CS5#TRMPBF

Analog Devices Inc.
Boost, Flyback, SEPIC Switching Regulator IC Positive Adjustable 1.23V 1 Output 550mA (Switch) SOT-23-5 Thin, TSOT-23-5
Active1,543 in stock
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Overview

The LT1613CS5#TRMPBF is a compact, high-frequency constant-current/constant-voltage DC/DC converter that operates in boost, flyback, or SEPIC topologies. It features a wide input voltage range starting as low as 0.9V, making it ideal for systems powered by a single alkaline or lithium-ion cell.

Why Choose This Part

The 1.3MHz switching frequency allows for the use of tiny, low-profile inductors and capacitors, saving significant board space. Its ability to generate up to 34V outputs from an input as low as 0.9V provides extreme flexibility for various power distribution architectures.

Applications

Single-Cell Boost Converters
Converting 1.5V alkaline or 1.2V NiMH cell voltages to a stable 3.3V or 5V rail for low-power electronics.
Local 5V to 12V Conversion
Providing higher voltage bias rails for analog circuitry or LCD bias from a standard 5V system bus.
SEPIC Voltage Regulation
Maintaining a constant output voltage in battery-powered devices where the battery voltage may be higher or lower than the required output.
White LED Drivers
Acting as a constant-current source for driving backlight LEDs in portable handheld devices.

Key Specifications

Function Step-Up, Step-Up/Step-Down
Topology Boost, Flyback, SEPIC
Output Type Adjustable
Mounting Type Surface Mount
Package / Case SOT-23-5 Thin, TSOT-23-5
Current - Output 550mA (Switch)
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 1.4MHz
Operating Temperature 0degC ~ 70degC (TA)
Synchronous Rectifier No
Voltage - Input (Max) 10V
Voltage - Input (Min) 0.9V
Voltage - Output (Max) 34V
Supplier Device Package TSOT-23-5
Voltage - Output (Min/Fixed) 1.23V

Getting Started

To evaluate the LT1613, design a PCB layout with short traces for the SW and GND pins to minimize EMI at the 1.3MHz switching frequency. Use low-ESR ceramic capacitors and ensure the feedback resistor divider is placed close to the FB pin to maintain regulation accuracy.

Also Consider

MCP1640T-I/CHY MCHPMicrochip Technology - A highly integrated synchronous boost converter offering high efficiency for 0.65V to 5.5V applications with a smaller footprint.
TPS61040DBVR TITexas Instruments - A specialized high-frequency boost converter capable of 28V outputs frequently used for LCD and OLED biasing.