LT1614 - Inverting 600kHz Switching Regulator
Features
- Better Regulation Than a Charge Pump
- 0.1 Ohm Effective Output Impedance
- ±5V at 200mA from a 5V Input
- 600kHz Fixed Frequency Operation
- Operates with VIN as Low as 1V
- 1mA Quiescent Current
- Low Shutdown Current: 10µA
- Low-Battery Detector
- Low VCESAT Switch: 295mV at 500mA
AEC-Q100 data available for specific packages
Typical Application
Description
The LT1614 is a fixed frequency, inverting mode switching regulator that operates from an input voltage as low as 1V. Utilizing a low noise topology, the LT1614 can generate a negative output down to -24V from a 1V to 5V input. Fixed frequency switching ensures a clean output free from low frequency noise. The device contains a low-battery detector with a 200mV reference and shuts down to less than 10µA. No load quiescent current of the LT1614 is 1mA and the internal NPN power switch handles a 500mA current with a voltage drop of just 295mV.High frequency switching enables the use of small inductors and capacitors. Ceramic capacitors can be used in many applications, eliminating the need for bulky tantalum types.
The LT1614 is available in 8-lead MSOP or SO packages.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT1614CMS8#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LT1614CMS8#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LT1614CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1614CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1614IMS8#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LT1614IMS8#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LT1614IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LT1614IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT1614CMS8#PBF | MS-8 | C | $3.10 | $2.65 | Yes | |
| LT1614CMS8#TRPBF | MS-8 | C | $2.71 | Yes | ||
| LT1614CS8#PBF | SO-8 | C | $2.85 | $2.40 | Yes | |
| LT1614CS8#TRPBF | SO-8 | C | $2.46 | Yes | ||
| LT1614IMS8#PBF | MS-8 | I | $3.55 | $3.00 | Yes | |
| LT1614IMS8#TRPBF | MS-8 | I | $3.06 | Yes | ||
| LT1614IS8#PBF | SO-8 | I | $3.45 | $2.90 | Yes | |
| LT1614IS8#TRPBF | SO-8 | I | $2.96 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT1614IMS8#PBF | MS-8 | I | $3.55 | $3.00 | Yes | |
| LT1614IMS8#TRPBF | MS-8 | I | $3.06 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- MR Head Bias
- LCD Bias
- GaAs FET Bias
- Positive-to-Negative Conversion
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LT1614
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
