LT1934
PRODUCTIONMicropower Step-Down Switching Regulators in ThinSOT
- Part Models
- 16
- 1ku List Price
- Starting From $3.74
Overview
- Wide Input Voltage Range: 3.2V to 34V
- Micropower Operation: IQ = 12µA
- 5V at 250mA from 6.5V to 34V Input (LT1934)
- 5V at 60mA from 6.5V to 34V Input (LT1934-1)
- 3.3V at 250mA from 4.5V to 34V Input (LT1934)
- 3.3V at 60mA from 4.5V to 34V Input (LT1934-1)
- Low Shutdown Current: <1µA
- Low VCESAT Switch: 200mV at 300mA
- Low Profile (1mm) SOT-23 (ThinSOT™) and (2mm × 3mm × 0.8mm) 6-Pin DFN Package
The LT1934 is a micropower step-down DC/DC converter with internal 400mA power switch, packaged in a low profile (1mm) ThinSOT. With its wide input range of 3.2V to 34V, the LT1934 can regulate a wide variety of power sources, from 4-cell alkaline batteries and 5V logic rails to unregulated wall transformers and lead-acid batteries. Quiescent current is just 12µA and a zero current shutdown mode disconnects the load from the input source, simplifying power management in battery-powered systems. Burst Mode® operation and the low drop internal power switch result in high efficiency over a broad range of load current.
The LT1934 provides up to 300mA of output current. The LT1934-1 has a lower current limit, allowing optimum choice of external components when the required output current is less than 60mA. Fast current limiting protects the LT1934 and external components against shorted outputs, even at 34V input.
Applications
- Wall Transformer Regulation
- Automotive Battery Regulation
- Standby Power for Portable Products
- Distributed Supply Regulation
- Industrial Control Supplies
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
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 |
|---|---|---|---|
| LT1934EDCB#TRMPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934EDCB#TRPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934EDCB-1#TRMPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934EDCB-1#TRPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934ES6#TRMPBF | 6-Lead TSOT-23 | ||
| LT1934ES6#TRPBF | 6-Lead TSOT-23 | ||
| LT1934ES6-1#TRMPBF | 6-Lead TSOT-23 | ||
| LT1934ES6-1#TRPBF | 6-Lead TSOT-23 | ||
| LT1934IDCB#TRMPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934IDCB#TRPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934IDCB-1#TRMPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934IDCB-1#TRPBF | 6-Lead DFN (2mm x 3mm w/ EP) | ||
| LT1934IS6#TRMPBF | 6-Lead TSOT-23 | ||
| LT1934IS6#TRPBF | 6-Lead TSOT-23 | ||
| LT1934IS6-1#TRMPBF | 6-Lead TSOT-23 | ||
| LT1934IS6-1#TRPBF | 6-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
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|---|---|---|
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
| Ideal Diodes and PowerPath Controllers 1 | ||
| LTC4359 | RECOMMENDED FOR NEW DESIGNS | Ideal Diode Controller with Reverse Input Protection |
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
Tools & Simulations
LTspice 2
- LT1934-1 Demo Circuit - µPower Step-Down Regulator (10V to 3.3V @ 45mA)
- LT1934 Demo Circuit - µPower Step-Down Regulator (6.5-34V to 5V @ 250mA)
Models for the following parts are available in LTspice:
- LT1934
- LT1934-1
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.
