LT1307
PRODUCTIONSingle Cell Micropower 600kHz PWM DC/DC Converters
- Part Models
- 13
- 1ku List Price
- Starting From $3.21
Overview
- Uses Small Ceramic Capacitors
- 50µA Quiescent Current (LT1307)
- 1mA Quiescent Current (LT1307B)
- Operates with VIN as Low as 1V
- 600kHz Fixed Frequency Operation
- Starts into Full Load
- Low Shutdown Current: 3µA
- Low-Battery Detector
- 3.3V at 75mA from a Single Cell
- Automatic Burst Mode® Operation at Light Load (LT1307)
- Continuous Switching at Light Load (LT1307B)
- Low VCESAT Switch: 295mV at 500mA
The LT1307/LT1307B are micropower, fixed frequency DC/DC converters that operate from an input voltage as low as 1V. First in the industry to achieve true current mode PWM performance from a single cell supply, the LT1307 features automatic shifting to power saving Burst Mode operation at light loads. High efficiency is maintained over a broad 100uA to 100mA load range. The LT1307B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The devices contain a low-battery detector with a 200mV reference and shut down to less than 5µA. No load quiescent current of the LT1307 is 50µA and the internal NPN power switch handles a 500mA current with a voltage drop of just 295mV.
Unlike competitive devices, large electrolytic capacitors are not required with the LT1307/LT1307B in single cell applications. The high frequency (600kHz) switching allows the use of tiny surface mount multilayer ceramic (MLC) capacitors along with small surface mount inductors. The devices work with just 10µF of output capacitance and require only 1µF of input bypassing.
The LT1307/LT1307B are available in 8-lead MSOP, PDIP and SO packages.
Applications
- Pagers
- Cordless Telephones
- GPS Receivers
- Battery Backup
- Portable Electronic Equipment
- Glucose Meters
- Diagnostic Medical Instrumentation
Documentation
Data Sheet 1
Application Note 2
Design Note 1
Technical Articles 2
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 |
|---|---|---|---|
| LT1307BCMS8#PBF | 8-Lead MSOP | ||
| LT1307BCMS8#TRPBF | 8-Lead MSOP | ||
| LT1307BCS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1307BCS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1307BIS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1307BIS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1307CMS8#PBF | 8-Lead MSOP | ||
| LT1307CMS8#TRPBF | 8-Lead MSOP | ||
| LT1307CN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1307CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1307CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1307IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1307IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LT1307BCMS8#PBF | PRODUCTION | |
| LT1307BCMS8#TRPBF | PRODUCTION | |
| LT1307CMS8#PBF | PRODUCTION | |
| LT1307CMS8#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT1307BCMS8#PBF | PRODUCTION | |
| LT1307BCMS8#TRPBF | PRODUCTION | |
| LT1307CMS8#PBF | PRODUCTION | |
| LT1307CMS8#TRPBF | PRODUCTION | |
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LT1307BCS8#PBF | PRODUCTION | |
| LT1307BCS8#TRPBF | PRODUCTION | |
| LT1307BIS8#PBF | PRODUCTION | |
| LT1307BIS8#TRPBF | PRODUCTION | |
| LT1307CS8#PBF | PRODUCTION | |
| LT1307CS8#TRPBF | PRODUCTION | |
| LT1307IS8#PBF | PRODUCTION | |
| LT1307IS8#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1307BCS8#PBF | PRODUCTION | |
| LT1307BCS8#TRPBF | PRODUCTION | |
| LT1307BIS8#PBF | PRODUCTION | |
| LT1307BIS8#TRPBF | PRODUCTION | |
| LT1307CS8#PBF | PRODUCTION | |
| LT1307CS8#TRPBF | PRODUCTION | |
| LT1307IS8#PBF | PRODUCTION | |
| LT1307IS8#TRPBF | PRODUCTION | |
|
Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package |
||
| LT1307CN8#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LT1307CN8#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LT1307CN8#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LT1307
- LT1307B
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.