LT3150
LT3150
RECOMMENDED FOR NEW DESIGNSFast Transient Response, Low Input Voltage, Very Low Dropout Linear Regulator Controller
- Part Models
- 2
- 1ku List Price
- Starting From $6.16
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Overview
- Fast Transient Response Optimized with Ceramic Output Capacitors
- FET RDS(ON) Defines Dropout Voltage
- ±1% Reference Tolerance Over Temperature
- Multifunction LDO Shutdown Pin with Latchoff
- Fixed Frequency 1.4MHz Boost Converter Generates MOSFET Gate Drive
- Internally Compensated Current Mode PWM
- Boost Converter Uses Tiny Capacitors and Inductor
- Independent Boost Converter Shutdown Control Permits LDO Output Voltage Supply Sequencing
- 16-Lead SSOP Package
The LT3150 drives a low cost external N-channel MOSFET as a source follower to produce a fast transient response, very low dropout voltage linear regulator. Selection of the N-channel MOSFET RDS(ON) allows dropout voltages below 300mV for low VIN to low VOUT applications.
The LT3150 includes a fixed frequency boost regulator that generates gate drive for the N-channel MOSFET. The internally compensated current mode PWM architecture combined with the 1.4MHz switching frequency permits the use of tiny, low cost capacitors and inductors.
The LT3150’s transient load performance is optimized with ceramic output capacitors. A precision 1.21V reference accommodates low voltage supplies.
Protection includes a high side current limit amplifier that activates a fault timer circuit. A multifunction shutdown pin provides either current limit time-out with latchoff, overvoltage protection or thermal shutdown. Independent shutdown control of the boost converter provides on/off and sequencing control of the LDO output voltage.
Applications
- Microprocessor, ASIC and I/O Supplies
- Very Low Dropout Input-to-Output Conversion
- Logic Termination Supplies
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
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 |
|---|---|---|---|
| LT3150CGN#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LT3150CGN#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LT3150CGN#PBF | PRODUCTION | |
| LT3150CGN#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package |
||
| LT3150CGN#PBF | PRODUCTION | |
| LT3150CGN#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG] |
||
| LT3150CGN#PBF | PRODUCTION | |
| LT3150CGN#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:
- LT3150
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
LT3150CGN Demo Board | Low Voltage LDO Linear Regulator Controller, 1.1V ≤ VIN ≤ 10V, VOUT = 1.2V/1.5/1.8V @ 4A
Resources
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