LT1767
PRODUCTIONMonolithic 1.5A, 1.25MHz Step-Down Switching Regulators
- Part Models
- 20
- 1ku List Price
- Starting From $4.69
Overview
- 1.5A Switch in a Small MSOP Package
- Constant 1.25MHz Switching Frequency
- High Power Exposed Pad (MS8E) Package
- Wide Operating Voltage Range: 3V to 25V
- High Efficiency 0.22Ω Switch
- 1.2V Feedback Reference Voltage
- Fixed Output Voltages of 1.8V, 2.5V, 3.3V, 5V
- 2% Overall Output Tolerance
- Uses Low Profile Surface Mount Components
- Low Shutdown Current: 6μA
- Synchronizable to 2MHz
- Current Mode Loop Control
- Constant Maximum Switch Current Rating at All Duty Cycles*
The LT1767 is a 1.25MHz monolithic buck switching regulator. A high efficiency 1.5A, 0.22Ω switch is included on the die together with all the control circuitry required to complete a high frequency, current mode switching regulator. Current mode control provides fast transient response and excellent loop stability.
New design techniques achieve high efficiency at high switching frequencies over a wide operating range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li-Ion batteries. An operating supply current of 1mA improves efficiency, especially at lower output currents. Shutdown reduces quiescent current to 6μA. Maximum switch current remains constant at all duty cycles. Synchronization allows an external logic level signal to increase the internal oscillator from 1.5MHz to 2MHz.
The LT1767 is available in an 8-pin MSOP fused lead-frame package and a low thermal resistance exposed pad package. Full cycle-by-cycle current limit and thermal shutdown are provided. High frequency operation allows the reduction of input and output filtering components and permits the use of chip inductors.
Applications
- DSL Modems
- Portable Computers
- Wall Adapters
- Battery-Powered Systems
- Distributed Power
Documentation
Data Sheet 1
User Guide 1
Technical Articles 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 |
|---|---|---|---|
| LT1767EMS8#PBF | 8-Lead MSOP | ||
| LT1767EMS8#TRPBF | 8-Lead MSOP | ||
| LT1767EMS8-1.8#PBF | 8-Lead MSOP | ||
| LT1767EMS8-1.8#TRPBF | 8-Lead MSOP | ||
| LT1767EMS8-2.5#PBF | 8-Lead MSOP | ||
| LT1767EMS8-2.5#TRPBF | 8-Lead MSOP | ||
| LT1767EMS8-3.3#PBF | 8-Lead MSOP | ||
| LT1767EMS8-3.3#TRPBF | 8-Lead MSOP | ||
| LT1767EMS8-5#PBF | 8-Lead MSOP | ||
| LT1767EMS8-5#TRPBF | 8-Lead MSOP | ||
| LT1767EMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E#TRPBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-1.8#PBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-1.8#TRPBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-2.5#PBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-2.5#TRPBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-3.3#PBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-3.3#TRPBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-5#PBF | 8-Lead MSOP w/ EP | ||
| LT1767EMS8E-5#TRPBF | 8-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT1767EMS8#PBF | PRODUCTION | |
| LT1767EMS8#TRPBF | PRODUCTION | |
| LT1767EMS8-1.8#PBF | PRODUCTION | |
| LT1767EMS8-1.8#TRPBF | PRODUCTION | |
| LT1767EMS8-2.5#PBF | PRODUCTION | |
| LT1767EMS8-2.5#TRPBF | PRODUCTION | |
| LT1767EMS8-5#PBF | PRODUCTION | |
| LT1767EMS8-5#TRPBF | PRODUCTION | |
| LT1767EMS8E#PBF | PRODUCTION | |
| LT1767EMS8E#TRPBF | PRODUCTION | |
| LT1767EMS8E-1.8#PBF | PRODUCTION | |
| LT1767EMS8E-1.8#TRPBF | PRODUCTION | |
| LT1767EMS8E-2.5#PBF | PRODUCTION | |
| LT1767EMS8E-2.5#TRPBF | PRODUCTION | |
| LT1767EMS8E-5#PBF | PRODUCTION | |
| LT1767EMS8E-5#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT1767EMS8#PBF | PRODUCTION | |
| LT1767EMS8#TRPBF | PRODUCTION | |
| LT1767EMS8-1.8#PBF | PRODUCTION | |
| LT1767EMS8-1.8#TRPBF | PRODUCTION | |
| LT1767EMS8-2.5#PBF | PRODUCTION | |
| LT1767EMS8-2.5#TRPBF | PRODUCTION | |
| LT1767EMS8-3.3#PBF | PRODUCTION | |
| LT1767EMS8-3.3#TRPBF | PRODUCTION | |
| LT1767EMS8-5#PBF | PRODUCTION | |
| LT1767EMS8-5#TRPBF | PRODUCTION | |
| LT1767EMS8E#PBF | PRODUCTION | |
| LT1767EMS8E#TRPBF | PRODUCTION | |
| LT1767EMS8E-1.8#PBF | PRODUCTION | |
| LT1767EMS8E-1.8#TRPBF | PRODUCTION | |
| LT1767EMS8E-2.5#PBF | PRODUCTION | |
| LT1767EMS8E-2.5#TRPBF | PRODUCTION | |
| LT1767EMS8E-3.3#PBF | PRODUCTION | |
| LT1767EMS8E-3.3#TRPBF | PRODUCTION | |
| LT1767EMS8E-5#PBF | PRODUCTION | |
| LT1767EMS8E-5#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LT1767EMS8-3.3#PBF | PRODUCTION | |
| LT1767EMS8-3.3#TRPBF | PRODUCTION | |
| LT1767EMS8E-3.3#PBF | PRODUCTION | |
| LT1767EMS8E-3.3#TRPBF | PRODUCTION | |
|
Jul 12, 2022 - 22_0157 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM] |
||
| LT1767EMS8-3.3#PBF | PRODUCTION | |
| LT1767EMS8-3.3#TRPBF | PRODUCTION | |
|
Jun 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
| LT1767EMS8-3.3#PBF | PRODUCTION | |
| LT1767EMS8-3.3#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 |
| Oscillators 1 | ||
| LTC6909 | PRODUCTION | 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation |
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1767
- LT1767-1.8
- LT1767-2.5
- LT1767-3.3
- LT1767-5
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.
Evaluation Kits
LT1767EMS8E | 1.25MHz Wide Input Range Step-Down DC/DC Converter, 3V to 25V Input, 5V/3/3VOUT @ 1A