LT1317
PRODUCTIONMicropower, 600kHz PWM DC/DC Converters
- Part Models
- 12
- 1ku List Price
- Starting From $4.15
Overview
- 100µA Quiescent Current
- Operates with VIN as Low as 1.5V
- 600kHz Fixed Frequency Operation
- Starts into Full Load
- Low-Battery Detector Active in Shutdown
- Automatic Burst Mode Operation at Light Load (LT1317)
- Continuous Switching at Light Loads (LT1317B)
- Low VCESAT Switch: 300mV at 500mA
- Pin for Pin Compatible with the LT1307/LT1307B
The LT1317/LT1317B are micropower, fixed frequency step-up DC/DC converters that operate over a wide input voltage range of 1.5V to 12V. The LT1317 features automatic shifting to power saving Burst Mode™ operation at light loads. High efficiency is maintained over a broad 300µA to 200mA load range. Peak switch current during Burst Mode operation is kept below 250mA for most operating conditions which results in low output ripple voltage, even at high input voltages. The LT1317B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency.
The LT1317/LT1317B contain an internal low-battery detector with a 200mV reference that stays alive when the device goes into shutdown.
No-load quiescent current of the LT1317 is 100µA and shuts down to 30µA. The internal NPN power switch handles a 500mA current with a voltage drop of just 300mV.
The LT1317/LT1317B are available in MS8 and SO-8 packages.
Applications
- Cellular Telephones
- Cordless Telephones
- Pagers
- GPS Receivers
- Battery Backup
- Portable Electronic Equipment
- Glucose Meters
- Diagnostic Medical Instrumentation
Documentation
Data Sheet 1
User Guide 1
Technical Articles 4
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 |
|---|---|---|---|
| LT1317BCMS8#PBF | 8-Lead MSOP | ||
| LT1317BCMS8#TRPBF | 8-Lead MSOP | ||
| LT1317BCS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1317BCS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1317BIS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1317BIS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1317CMS8#PBF | 8-Lead MSOP | ||
| LT1317CMS8#TRPBF | 8-Lead MSOP | ||
| LT1317CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1317CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1317IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1317IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT1317BCMS8#PBF | PRODUCTION | |
| LT1317BCMS8#TRPBF | PRODUCTION | |
| LT1317CMS8#PBF | PRODUCTION | |
| LT1317CMS8#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT1317BCMS8#PBF | PRODUCTION | |
| LT1317BCMS8#TRPBF | PRODUCTION | |
| LT1317CMS8#PBF | PRODUCTION | |
| LT1317CMS8#TRPBF | PRODUCTION | |
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LT1317BCS8#PBF | PRODUCTION | |
| LT1317BCS8#TRPBF | PRODUCTION | |
| LT1317BIS8#PBF | PRODUCTION | |
| LT1317BIS8#TRPBF | PRODUCTION | |
| LT1317CS8#PBF | PRODUCTION | |
| LT1317CS8#TRPBF | PRODUCTION | |
| LT1317IS8#PBF | PRODUCTION | |
| LT1317IS8#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1317BCS8#PBF | PRODUCTION | |
| LT1317BCS8#TRPBF | PRODUCTION | |
| LT1317BIS8#PBF | PRODUCTION | |
| LT1317BIS8#TRPBF | PRODUCTION | |
| LT1317CS8#PBF | PRODUCTION | |
| LT1317CS8#TRPBF | PRODUCTION | |
| LT1317IS8#PBF | PRODUCTION | |
| LT1317IS8#TRPBF | 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:
- LT1317
- LT1317B
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
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