LTC1624
PRODUCTIONHigh Efficiency SO-8 N-Channel Switching Regulator Controller
- Part Models
- 4
- 1ku List Price
- Starting From $5.31
Overview
- N-Channel MOSFET Drive
- Implements Boost, Step-Down, SEPIC and Inverting Regulators
- Wide VIN Range: 3.5V to 36V Operation
- Wide VOUT Range: 1.19V to 30V in Step-Down Configuration
- ±1% 1.19V Reference
- Low Dropout Operation: 95% Duty Cycle
- 200kHz Fixed Frequency
- Low Standby Current
- Very High Efficiency
- Remote Output Voltage Sense
- Logic-Controlled Micropower Shutdown
- Internal Diode for Bootstrapped Gate Drive
- Current Mode Operation for Excellent Line and Load Transient Response
- Available in an 8-Lead SO Package
The LTC1624 is a current mode switching regulator controller that drives an external N-channel power MOSFET using a fixed frequency architecture. It can be operated in all standard switching configurations including boost, step-down, inverting and SEPIC. Burst Mode™ operation provides high efficiency at low load currents. A maximum high duty cycle limit of 95% provides low dropout operation which extends operating time in battery-operated systems.
The operating frequency is internally set to 200kHz, allowing small inductor values and minimizing PC board space. The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 36V (absolute maximum).
A multifunction pin (ITH/RUN) allows external compensation for optimum load step response plus shutdown. Soft start can also be implemented with the ITH/RUN pin to properly sequence supplies.
Applications
- Notebook and Palmtop Computers, PDAs
- Cellular Telephones and Wireless Modems
- Battery-Operated Digital Devices
- DC Power Distribution Systems
- Battery Chargers
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 2
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 |
|---|---|---|---|
| LTC1624CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1624CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1624IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1624IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC1624CS8#PBF | PRODUCTION | |
| LTC1624CS8#TRPBF | PRODUCTION | |
| LTC1624IS8#PBF | PRODUCTION | |
| LTC1624IS8#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LTC1624CS8#PBF | PRODUCTION | |
| LTC1624CS8#TRPBF | PRODUCTION | |
| LTC1624IS8#PBF | PRODUCTION | |
| LTC1624IS8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LTC1624CS8#PBF | PRODUCTION | |
| LTC1624CS8#TRPBF | PRODUCTION | |
| LTC1624IS8#PBF | PRODUCTION | |
| LTC1624IS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Switching Regulators & Controllers 1 | ||
| LTC3880 | RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC1624
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
LTC1624CS8 Demo Board | Buck Controller, 4.5V ≤ VIN ≤ 28V, VOUT = 2.5V/ 3.3V/5.0V @ 3A