LTC3604
PRODUCTION2.5A, 15V Monolithic Synchronous Step-Down Regulator
- Part Models
- 8
- 1ku List Price
- Starting From $4.92
Overview
- 3.6V to 15V Operating Input Voltage Range
- 2.5A Output Current
- Up to 95% Efficiency
- Very Low Duty Cycle Operation: 5% at 2.25MHz
- Adjustable Switching Frequency: 800kHz to 4MHz
- External Frequency Synchronization
- Current Mode Operation for Excellent Line and Load Transient Response
- User Selectable Low Ripple (20mVP-P Typical) Burst Mode® (No Load IQ = 300μA) or Forced Continuous Operation
- 0.6V Reference Allows Low Output Voltages
- Short-Circuit Protected
- Output Voltage Tracking Capability
- Power Good Status Output
- Available in Small, Thermally-Enhanced, 16-Pin QFN (3mm × 3mm) and MSOP Packages
The LTC3604 is a high efficiency, monolithic synchronous buck regulator using a phase-lockable controlled on-time, current mode architecture capable of supplying up to 2.5A of output current. The operating supply voltage range is from 3.6V to 15V, making it suitable for a wide range of power supply applications.
The operating frequency is programmable from 800kHz to 4MHz with an external resistor enabling the use of small surface mount inductors. For switching noise sensitive applications, the LTC3604 can be externally synchronized over the same frequency range. An internal phase-locked loop aligns the on-time of the top power MOSFET to the internal or external clock. This unique constant frequency/controlled on-time architecture is ideal for high step-down ratio applications that demand high switching frequencies and fast transient response.
The LTC3604 offers two operational modes: Burst Mode operation and forced continuous mode to allow the user to optimize output voltage ripple, noise, and light load efficiency for a given application. Maximum light load efficiency is achieved with the selection of Burst Mode operation while forced continuous mode provides minimum output ripple and constant frequency operation.
Applications
- Distributed Power Systems
- Lithium-Ion Battery-Powered Instruments
- Point-of-Load Power Supplies
Documentation
Data Sheet 1
User Guide 2
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 |
|---|---|---|---|
| LTC3604EMSE#PBF | 16-Lead MSOP w/ EP | ||
| LTC3604EMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LTC3604EUD#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC3604EUD#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC3604IMSE#PBF | 16-Lead MSOP w/ EP | ||
| LTC3604IMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LTC3604IUD#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC3604IUD#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LTC3604EMSE#PBF | PRODUCTION | |
| LTC3604EMSE#TRPBF | PRODUCTION | |
| LTC3604IMSE#PBF | PRODUCTION | |
| LTC3604IMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3604EMSE#PBF | PRODUCTION | |
| LTC3604EMSE#TRPBF | PRODUCTION | |
| LTC3604IMSE#PBF | PRODUCTION | |
| LTC3604IMSE#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 |
| 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 |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC3603 | PRODUCTION | 2.5A, 15V Monolithic Synchronous Step-Down Regulator |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3604
LTpowerCAD 2
- LTC3604 Project - 2.5A, 15V Monolithic Buck Regulator (4.5-15V to 1.2V @ 2.5A)
- LTC3604 Project - 2.5A, 15V Monolithic Buck Regulator (4.5-15V to 1.2V @ 2.5A)
Design tools for the following parts are available in LTpowerCAD:
- LTC3604
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.
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Evaluation Kits
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