LT1585A-1.5 - Fixed 1.5V, 4.6A and 5A Low Dropout, Fast Response GTL+ Regulators
Features
- Fast Transient Response
- Guaranteed Dropout Voltage at Multiple Currents
- Load Regulation: 0.05% Typ
- Trimmed Current Limit
- On-Chip Thermal Limiting
Typical Application
Description
The LT1585-1.5/LT1585A-1.5 are low dropout, 3-terminal regulators with 4.6A and 5A output current capability respectively, and a fixed 1.5V output voltage. The designs are optimized for low voltage applications where transient response and minimum input voltage are critical. Similar to the LT1084, they have lower dropout and faster transient response. These improvements make them ideal for low voltage microprocessor applications, especially as the regulator in an Intel processor GTL+ supply.
Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload that creates excessive junction temperatures.
The LT1585-1.5/LT1585A-1.5 are available in the through-hole 3-pin TO-220 power package and 3-pin plastic DD.
| Output Current | Output Voltage Options | |
| LT1584, -3.3, -3.38, -3.45, -3.6 | 7A | Adj, 3.3V, 3.38V, 3.45V, 3.6V |
| LT1585, -3.3, -3.38, -3.45, -3.6 | 4.6A | Adj, 3.3V, 3.38V, 3.45V, 3.6V |
| LT1585A, LT1585A-3.3 | 5A | Adj, 3.3V |
| LT1585-1.5, LT1585A-1.5 | 4.6A / 5A | Fixed 1.5V |
| LT1587, -3.3, -3.45, -3.6 | 3A | Adj, 3.3V, 3.45V, 3.6V |
| LT1587-1.5 | 3A | Fixed 1.5V |
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 |
|---|---|---|---|---|---|
| LT1585ACM-1.5#PBF | DDPAK-3 | M | C | 05-08-1460 | Yes |
| LT1585ACM-1.5#TRPBF | DDPAK-3 | M | C | 05-08-1460 | Yes |
| LT1585ACT-1.5#PBF | TO-220 | T | C | 05-08-1420 | 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 | |
|---|---|---|---|---|---|---|
| LT1585ACM-1.5#PBF | DDPAK-3 | C | $5.40 | $4.45 | Yes | |
| LT1585ACM-1.5#TRPBF | DDPAK-3 | C | $4.57 | Yes | ||
| LT1585ACT-1.5#PBF | TO-220 | C | $5.00 | $4.10 | 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
Applications
- GTL+ Power Supply
- Low Voltage Logic Supplies
- Battery-Powered Circuitry
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- LT1084-Fixed - 3A, 5A, 7.5A Low Dropout Positive Fixed Regulators
Product Notifications
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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:
LT1585
LT1585-3.3
LT1585-3.38
LT1585-3.45
LT1585-3.6
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.
