LT1930
PRODUCTION1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT
- Part Models
- 4
- 1ku List Price
- Starting From $3.40
Overview
- 1.2MHz Switching Frequency (LT1930)
- 2.2MHz Switching Frequency (LT1930A)
- Low VCESAT Switch: 400mV at 1A
- High Output Voltage: Up to 34V
- 5V at 480mA from 3.3V Input (LT1930)
- 12V at 250mA from 5V Input (LT1930A)
- Wide Input Range: 2.6V to 16V
- Uses Small Surface Mount Components
- Low Shutdown Current: <1µA
- Low Profile (1mm) ThinSOT™ Package
- Pin-for-Pin Compatible with the LT1613
The LT1930 and LT1930A are the industry's highest power SOT-23 switching regulators. Both include an internal 1A, 36V switch allowing high current outputs to be generated in a small footprint. The LT1930 switches at 1.2MHz, allowing the use of tiny, low cost and low height capacitors and inductors. The faster LT1930A switches at 2.2MHz, enabling further reductions in inductor size. Complete regulator solutions approaching one tenth of a square inch in area are achievable with these devices. Multiple output power supplies can now use a separate regulator for each output voltage, replacing cumbersome quasi-regulated approaches using a single regulator and custom transformers.
A constant frequency internally compensated current mode PWM architecture results in low, predictable output noise that is easy to filter. Low ESR ceramic capacitors can be used at the output, further reducing noise to the millivolt level. The high voltage switch on the LT1930/LT1930A is rated at 36V, making the device ideal for boost converters up to 34V as well as for single-ended primary inductance converter (SEPIC) and flyback designs. The LT1930 can generate 5V at up to 480mA from a 3.3V supply or 5V at 300mA from four alkaline cells in a SEPIC design.
The LT1930/LT1930A are available in the 5-lead ThinSOT package.
Applications
- TFT-LCD Bias Supply
- Digital Cameras
- Cordless Phones
- Battery Backup
- Medical Diagnostic Equipment
- Local 5V or 12V Supply
- External Modems
- PC Cards
- xDSL Power Supply
Documentation
Data Sheet 1
User Guide 3
Design Note 1
Technical Articles 3
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1930AES5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1930AES5#TRPBF | 5-Lead TSOT-23 | ||
| LT1930ES5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1930ES5#TRPBF | 5-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Overvoltage & Overcurrent Protectors 1 | ||
| LTC4365 | RECOMMENDED FOR NEW DESIGNS | Overvoltage, Undervoltage and Reverse Supply Protection Controller |
Tools & Simulations
LTspice 2
- LT1930 Demo Circuit - 1A, 1.2MHz, Step-up Converter (5V to12V @ 300mA)
- LT1930A Demo Circuit - 1A, 1.2MHz, Step-up DC/DC Converter (5V to 12V @ 300mA)
Models for the following parts are available in LTspice:
- LT1930
- LT1930A
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.
Evaluation Kits
LTC1930ES5/LTC1931ES5 Demo Board | 3 Circuits: Boost/SEPIC/Inverter, 5VIN to 12VOUT1 @300mA, 10V-16VIN to 12VOUT2 @300mA, 12VIN to -12VOUT3 @350mA
Resources
LT1930AES5 Demo Board | APD Bias Supply, 3V to 5.5V Input, VOUT = 30V to 90V @ Up to 2mA
Resources
LT1930AES5/LT1931AES5 Demo Board | 3 Circuits: Boost/SEPIC/Inverter: 5VIN to 12VOUT1 @ 250mA, 10V-16VIN to 12VOUT2 @ 250mA, 12VIN to -12VOUT3 @ 250mA
Resources
Reference Designs
Programmable High Current and Voltage Source/Sink Power Supply