Products
LTC3417
PRODUCTIONDual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator
- Part Models
- 4
- 1ku List Price
- Starting From $4.61
Viewing:
Overview
- High Efficiency: Up to 95%
- 1.4A/800mA Guaranteed Minimum Output Current
- No Schottky Diodes Required
- Programmable Frequency Operation: 1.5MHz or Adjustable From 0.6MHz to 4MHz
- Low RDS(ON) Internal Switches
- Short-Circuit Protected
- VIN: 2.25V to 5.5V
- Current Mode Operation for Excellent Line and Load Transient Response
- 125μA Quiescent Current in Sleep Mode
- Ultralow Shutdown Current: IQ < 1μA
- Low Dropout Operation: 100% Duty Cycle
- Power Good Output
- Phase Pin Selects 2nd Channel Phase Relationship with Respect to 1st Channel
- Internal Soft-Start with Individual Run Pin Control
- Available in Small Thermally Enhanced (5mm × 3mm) DFN and 20-Lead TSSOP Packages
The LTC3417 is a dual constant frequency, synchronous step-down DC/DC converter. Intended for medium power applications, it operates from a 2.25V to 5.5V input voltage range and has a constant programmable switching frequency, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. Each output voltage is adjustable from 0.8V to 5V. Internal synchronous low RDS(ON) power switches provide high efficiency without the need for external Schottky diodes.
A user selectable mode input allows the user to trade off ripple voltage for light load efficiency. Burst Mode® operation provides high efficiency at light loads, while Pulse Skip mode provides low ripple noise at light loads. A phase mode pin allows the second channel to operate in-phase or 180° out-of-phase with respect to channel 1. Out-of-phase operation produces lower RMS current on VIN and thus lower RMS derating on the input capacitor.
To further maximize battery life, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle) and both channels draw a total quiescent current of only 100µA. In shutdown, the device draws <1µA.
| Features | Notes | |
| LTC3417 | - | - |
| LTC3417A | Improved Channel Matching | - |
| LTC3417A-1 | Power On Reset | Recommended For New Designs |
| LTC3417A-2 | Power Good | Recommended For New Designs |
Applications
- PDAs/Palmtop PCs
- Digital Cameras
- Cellular Phones
- PC Cards
- Wireless and DSL Modems
Documentation
Data Sheet 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 |
|---|---|---|---|
| LTC3417EDHC#PBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3417EDHC#TRPBF | 16-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3417EFE#PBF | 20-Lead TSSOP w/ EP | ||
| LTC3417EFE#TRPBF | 20-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 30, 2020 - 20_0244 Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan) |
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| LTC3417EDHC#PBF | PRODUCTION | |
| LTC3417EDHC#TRPBF | PRODUCTION | |
| LTC3417EFE#PBF | PRODUCTION | |
| LTC3417EFE#TRPBF | PRODUCTION | |
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
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| LTC3417EFE#PBF | PRODUCTION | |
| LTC3417EFE#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
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| LTC3417EFE#PBF | PRODUCTION | |
| LTC3417EFE#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 |
|---|---|---|
| Protection Switches & Controllers 1 | ||
| LTC4365 | RECOMMENDED FOR NEW DESIGNS | Overvoltage, Undervoltage and Reverse Supply Protection Controller |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2935 | PRODUCTION | Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds |
| Temperature Sensors 1 | ||
| LTC2991 | RECOMMENDED FOR NEW DESIGNS | Octal I2C Voltage, Current, and Temperature Monitor |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC3417A-2 | PRODUCTION | Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3417
- LTC3417A
- LTC3417A-1
- LTC3417A-2
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTC3417
- LTC3417A
- LTC3417A-2
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.