DocumentationDatasheet
Application Note
Design Note
Reliability Data
Product Selector Card
- Digital Power System Management
- SnPb (Tin-Lead) BGA Packages μModule Power Products
- μModule Power Products Catalog
Press Release
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ltspice
- LTM4675 Demo Circuit - Dual Output µModule Buck Regulator with Digital Interface (4.5-17V to 1V & 1.8V @ 9A)
- LTM4675 Demo Circuit - Paralleled µModule Buck Regulator with Digital Interface (10-14V to 1V @ 72A)
LTpowerCAD
Linduino
Features
- Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
- Wide Input Voltage Range: 4.5V to 17V
- Output Voltage Range: 0.5V to 5.5V
- ±0.5% Maximum DC Output Error Over Temperature
- ±2.5% Current Readback Accuracy at 9A Load
- 400kHz PMBus-Compliant I2C Serial Interface
- Integrated 16-Bit ΔΣ ADC
- Supports Telemetry Polling Rates Up to 125Hz
- Constant Frequency Current Mode Control
- Parallel and Current Share Multiple Modules
- All 7-Bit Slave Addresses Supported
- Drop-In Pin-Compatible to Dual 13A LTM4676A and
Dual 18A LTM4677 - 16mm × 11.9mm × 3.51mm BGA Package
- Download LTpowerPlay Software
Readable Data:
- Input and Output Voltages, Currents, and Temperatures
- Running Peak Values, Uptime, Faults and Warnings
- Onboard EEPROM Fault Log Record
Writable Data and Configurable Parameters:
- Output Voltage, Voltage Sequencing and Margining
- Digital Soft-Start/Stop Ramp
- OV/UV/OT, UVLO, Frequency and Phasing
Typical Application
Description
The LTM®4675 is a dual 9A or single 18A step-down μModule® (power module) DC/DC regulator with 70ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol . The LTM4675 is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.
The LTM4675’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay™ GUI and DC1613 USB-to-PMBus converter and demo kits are available.
The LTM4675 is offered in a 16mm × 11.9mm × 3.51mm BGA package available with SnPb or RoHS compliant terminal finish.
16mm x 11.9mm x 3.51mm BGA
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTM4675IY#PBF | BGA | 108 | I | $37.71 | $26.40 |
| LTM4675EY#PBF | BGA | 108 | E | $34.29 | $24.00 |
| LTM4675IY | BGA | 108 | I | $50.06 | $35.04 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2053A | LTM4675EY Demo Board | Dual PMBus Buck μModule Regulator, 4.5V ≤ VIN ≤ 17V, Vout0/Vout1 = 1V/1.8V @ 9A | $65.00 | |
| DC2204A | LTM4675 + LTM4676A + LTM4677 + LTM4620A Demo Board | PSM μModule Power Stick | $125.00 |