LTM4691
RECOMMENDED FOR NEW DESIGNSLow VIN, High Efficiency, Dual 2A Step-Down DC/DC µModule Regulator
- Part Models
- 4
- 1ku List Price
- Starting From $4.23
Overview
- Tiny Surface Mount, Low Profile 3mm × 4mm × 1.18mm LGA Package and 3mm × 4mm × 1.48mm BGA Package
- Input Voltage Range: 2.25V to 3.6V
- Dual 2A DC Output Current
- ±1.5% Total Output Voltage Regulation
- Current Mode Control, Fast Transient Response
- External Frequency Synchronization
- 180° Out-of-Phase Operation
- Selectable Pulse-Skipping Mode/Burst Mode® Operation/Forced Continuous Mode
- Power Good Indicator
- Internal Soft-Start
- Internal Compensation
- Overvoltage, Overcurrent and Overtemperature Protection
The LTM4691 is a complete dual 2A output switching mode DC/DC power supply in a tiny 3mm × 4mm × 1.18mm LGA package and a 3mm × 4mm × 1.48mm BGA package. Included in the package are the switching controller, power FETs, inductors and all supporting components. Operating over an input voltage range of 2.25V to 3.6V, the LTM4691 supports two outputs with programmable output voltage range from 0.5V to 2.5V set by external resistors. Its high efficiency design delivers up to 2A continuous current on each output. Only bulk input and output capacitors are needed.
The LTM4691 operates in forced continuous mode for low noise pulse-skipping mode or Burst Mode operation for high efficiency at lights loads. The typical buck switching frequency is 2MHz and can be synchronized from 1MHz to 3MHz. Its high switching frequency and a current mode architecture enables a very fast transient response to line and load changes without sacrificing stability.
Other features include precision run thresholds, a PGOOD signal, output overvoltage protection, thermal shutdown and output short-circuit protection. The LTM4691 is Pb-free and RoHS compliant.
Applications
- Telecom, Networking and Industrial Equipment
- Point-of-Load Regulation
- FPGA, ASIC Core Supplies
Documentation
Data Sheet 1
User Guide 1
Video 1
Brochure 1
Webcast 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 |
|---|---|---|---|
| LTM4691EV#PBF | 24-Lead (3mm × 4mm × 1.18mm) | ||
| LTM4691EY#PBF | 24-Lead BGA (4mm x 3mm x 1.48mm) | ||
| LTM4691IV#PBF | 24-Lead (3mm × 4mm × 1.18mm) | ||
| LTM4691IY#PBF | 24-Lead BGA (4mm x 3mm x 1.48mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 25, 2020 - 20_0123 Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia |
||
| LTM4691EV#PBF | PRODUCTION | |
| LTM4691IV#PBF | 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/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTM4691
LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
- LTM4691
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
LTM4691 Demo Board | Low VIN, High Efficiency, Dual 2A Step-down μModule DC/DC Converter