LT1529
LT1529
PRODUCTION3A Low Dropout Regulators with Micropower Quiescent Current and Shutdown
- Part Models
- 23
- 1ku List Price
- Starting From $4.67
Viewing:
Overview
- Dropout Voltage: 0.6V at IOUT = 3A
- Output Current: 3A
- Quiescent Current: 50µA
- No Protection Diodes Needed
- Adjustable Output from 3.8V to 14V
- 3.3V and 5V Fixed Output Voltages
- Controlled Quiescent Current in Dropout
- Shutdown IQ = 16µA
- Stable with 22µF Output Capacitor
- Reverse Battery Protection
- No Reverse Current
- Thermal Limiting
The LT®1529/LT1529-3.3/LT1529-5 are 3A low dropout regulators with micropower quiescent current and shutdown. The devices are capable of supplying 3A of output current with a dropout voltage of 0.6V. Designed for use in battery-powered systems, the low quiescent current, 50µA operating and 16µA in shutdown, make them an ideal choice. The quiescent current is well controlled; it does not rise in dropout as it does with many other low dropout PNP regulators.
Other features of the LT1529 /LT1529-3.3/LT1529-5 include the ability to operate with small output capacitors. They are stable with 22µF on the output while most older devices require up to 100µF for stability. Small ceramic capacitors can be used, enhancing manufacturability. Also the input may be connected to voltages lower than the output voltage, including negative voltages, without reverse current flow from output to input. This makes the LT1529/ LT1529-3.3/LT1529-5 ideal for backup power situations where the output is held high and the input is at ground or reversed. Under these conditions, only 16µA will flow from the OUTPUT pin to ground. The devices are available in 5-lead TO-220 and 5-lead DD packages.
Applications
- High Efficiency Regulator
- Regulator for Battery-Powered Systems
- Post Regulator for Switching Supplies
- 5V to 3.3V Logic Regulator
Documentation
Data Sheet 1
Technical Articles 1
Brochure 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 |
|---|---|---|---|
| LT1529CQ#PBF | 5-Lead DD Pak | ||
| LT1529CQ#TRPBF | 5-Lead DD Pak | ||
| LT1529CQ-3.3#PBF | 5-Lead DD Pak | ||
| LT1529CQ-3.3#TRPBF | 5-Lead DD Pak | ||
| LT1529CQ-5#PBF | 5-Lead DD Pak | ||
| LT1529CQ-5#TRPBF | 5-Lead DD Pak | ||
| LT1529CT#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1529CT#PBF | 5-Lead TO-220 | ||
| LT1529CT-3.3#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1529CT-3.3#PBF | 5-Lead TO-220 | ||
| LT1529CT-5#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1529CT-5#30PBF | 5-Lead TO-220 (Flow 30) | ||
| LT1529CT-5#PBF | 5-Lead TO-220 | ||
| LT1529IQ#PBF | 5-Lead DD Pak | ||
| LT1529IQ#TRPBF | 5-Lead DD Pak | ||
| LT1529IQ-3.3#PBF | 5-Lead DD Pak | ||
| LT1529IQ-3.3#TRPBF | 5-Lead DD Pak | ||
| LT1529IQ-5#PBF | 5-Lead DD Pak | ||
| LT1529IQ-5#TRPBF | 5-Lead DD Pak | ||
| LT1529IT#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1529IT#PBF | 5-Lead TO-220 | ||
| LT1529IT-3.3#PBF | 5-Lead TO-220 | ||
| LT1529IT-5#PBF | 5-Lead TO-220 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 10, 2022 - 22_0175 Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark |
||
| LT1529CQ#PBF | PRODUCTION | |
| LT1529CQ#TRPBF | PRODUCTION | |
| LT1529CQ-3.3#PBF | PRODUCTION | |
| LT1529CQ-3.3#TRPBF | PRODUCTION | |
| LT1529CQ-5#PBF | PRODUCTION | |
| LT1529CQ-5#TRPBF | PRODUCTION | |
| LT1529CT#06PBF | PRODUCTION | |
| LT1529CT#PBF | PRODUCTION | |
| LT1529CT-3.3#06PBF | PRODUCTION | |
| LT1529CT-3.3#PBF | PRODUCTION | |
| LT1529CT-5#06PBF | PRODUCTION | |
| LT1529CT-5#30PBF | PRODUCTION | |
| LT1529CT-5#PBF | PRODUCTION | |
| LT1529IQ#PBF | PRODUCTION | |
| LT1529IQ#TRPBF | PRODUCTION | |
| LT1529IQ-3.3#PBF | PRODUCTION | |
| LT1529IQ-3.3#TRPBF | PRODUCTION | |
| LT1529IQ-5#PBF | PRODUCTION | |
| LT1529IQ-5#TRPBF | PRODUCTION | |
| LT1529IT#06PBF | PRODUCTION | |
| LT1529IT#PBF | PRODUCTION | |
| LT1529IT-3.3#PBF | PRODUCTION | |
| LT1529IT-5#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| LT1764 | PRODUCTION | 3A, Fast Transient Response, Low Noise, LDO Regulators |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LT1529
- LT1529-3.3
- LT1529-5
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.
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