Datasheet LTM4644, LTM4644-1 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Quad DC/DC µModule Regulator with Configurable 4A Output Array |
| Pages / Page | 36 / 1 — FEATURES. DESCRIPTION. LTM4644. LTM4644-1. Top Feedback Resistor. from … |
| Revision | G |
| File Format / Size | PDF / 2.7 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. LTM4644. LTM4644-1. Top Feedback Resistor. from VOUT-to-VFB. (one resistor per channel). Application
Model Line for this Datasheet
Text Version of Document
LTM4644/LTM4644-1 Quad DC/DC µModule Regulator with Configurable 4A Output Array
FEATURES DESCRIPTION
n Quad Output Step-Down µModule® Regulator with 4A The LTM®4644/LTM4644-1 is a quad DC/DC step-down per Output µModule (micromodule) regulator with 4A per output. n Wide Input Voltage Range: 4V to 14V Outputs can be paralleled in an array for up to 16A capabil- n 2.375V to 14V with External Bias ity. Included in the package are the switching controllers, n 0.6V to 5.5V Output Voltage power FETs, inductors and support components. Operating n 4A DC, 5A Peak Output Current Each Channel over an input voltage range of 4V to 14V or 2.375V to 14V n Up to 5.5W Power Dissipation (TA = 60°C, 200 LFM, with an external bias supply, the LTM4644/LTM4644-1 No Heat Sink) supports an output voltage range of 0.6V to 5.5V. Its n ±1.5% Total Output Voltage Regulation high efficiency design delivers 4A continuous (5A peak) n Current Mode Control, Fast Transient Response output current per channel. Only bulk input and output n Parallelable for Higher Output Current capacitors are needed. n Output Voltage Tracking
LTM4644 LTM4644-1
n Internal Temperature Sensing Diode Output
Top Feedback Resistor
Integrated External (to be added on n External Frequency Synchronization
from VOUT-to-VFB
60.4k 0.5% PCB) n Overvoltage, Current and Temperature Protection
(one resistor per channel)
Resistor n 9mm × 15mm × 5.01mm BGA Package
Application
General To Interface with Applications PMBus power system management supervisory
APPLICATIONS
ICs such as the LTC2975 n Multirail Point of Load Regulation
Configurable Output Array*
n FPGAs, DSPs and ASICs Applications 4A All registered trademarks and trademarks are the property of their respective owners. 4A 8A 12A 4A 4A 16A 4A 4A 4A * Note 4
Click to view associated TechClip Videos. TYPICAL APPLICATION 4V to 14V Input, Quad 0.9V, 1V, 1.2V and 1.5V Output DC/DC µModule Regulator* 1.5V Output Efficiency and Power Loss (Each Channel)
4V to 14V V CLKIN CLKOUT IN1 VOUT1 1.5V/4A 95 2 22µF SVIN1 FB1 47µF ×2 90 RUN1 40.2k 4V 16V PGOOD1 LTM4644 85 1.5 V POWER LOSS (W) IN2 VOUT2 1.2V/4A SVIN2 FB2 47µF 80 RUN2 PGOOD2 60.4k 4V 75 1 VIN3 VOUT3 1V/4A EFFICIENCY (%) 70 SVIN3 FB3 47µF RUN3 PGOOD3 90.9k 4V 65 0.5 60 VIN = 5V VIN4 VOUT4 0.9V/4A VIN = 12V SVIN4 FB4 47µF 55 0 RUN4 PGOOD4 121k 4V 0 1 2 3 4 TEMP SGND GND LOAD CURRENT (A) 4644 TA01a 4644 TA01b *TA = 60°C, 200LFM, NO HEAT SINK Rev. G Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photo Design Resources Related Parts
FEATURES DESCRIPTION
n Quad Output Step-Down µModule® Regulator with 4A The LTM®4644/LTM4644-1 is a quad DC/DC step-down per Output µModule (micromodule) regulator with 4A per output. n Wide Input Voltage Range: 4V to 14V Outputs can be paralleled in an array for up to 16A capabil- n 2.375V to 14V with External Bias ity. Included in the package are the switching controllers, n 0.6V to 5.5V Output Voltage power FETs, inductors and support components. Operating n 4A DC, 5A Peak Output Current Each Channel over an input voltage range of 4V to 14V or 2.375V to 14V n Up to 5.5W Power Dissipation (TA = 60°C, 200 LFM, with an external bias supply, the LTM4644/LTM4644-1 No Heat Sink) supports an output voltage range of 0.6V to 5.5V. Its n ±1.5% Total Output Voltage Regulation high efficiency design delivers 4A continuous (5A peak) n Current Mode Control, Fast Transient Response output current per channel. Only bulk input and output n Parallelable for Higher Output Current capacitors are needed. n Output Voltage Tracking
LTM4644 LTM4644-1
n Internal Temperature Sensing Diode Output
Top Feedback Resistor
Integrated External (to be added on n External Frequency Synchronization
from VOUT-to-VFB
60.4k 0.5% PCB) n Overvoltage, Current and Temperature Protection
(one resistor per channel)
Resistor n 9mm × 15mm × 5.01mm BGA Package
Application
General To Interface with Applications PMBus power system management supervisory
APPLICATIONS
ICs such as the LTC2975 n Multirail Point of Load Regulation
Configurable Output Array*
n FPGAs, DSPs and ASICs Applications 4A All registered trademarks and trademarks are the property of their respective owners. 4A 8A 12A 4A 4A 16A 4A 4A 4A * Note 4
Click to view associated TechClip Videos. TYPICAL APPLICATION 4V to 14V Input, Quad 0.9V, 1V, 1.2V and 1.5V Output DC/DC µModule Regulator* 1.5V Output Efficiency and Power Loss (Each Channel)
4V to 14V V CLKIN CLKOUT IN1 VOUT1 1.5V/4A 95 2 22µF SVIN1 FB1 47µF ×2 90 RUN1 40.2k 4V 16V PGOOD1 LTM4644 85 1.5 V POWER LOSS (W) IN2 VOUT2 1.2V/4A SVIN2 FB2 47µF 80 RUN2 PGOOD2 60.4k 4V 75 1 VIN3 VOUT3 1V/4A EFFICIENCY (%) 70 SVIN3 FB3 47µF RUN3 PGOOD3 90.9k 4V 65 0.5 60 VIN = 5V VIN4 VOUT4 0.9V/4A VIN = 12V SVIN4 FB4 47µF 55 0 RUN4 PGOOD4 121k 4V 0 1 2 3 4 TEMP SGND GND LOAD CURRENT (A) 4644 TA01a 4644 TA01b *TA = 60°C, 200LFM, NO HEAT SINK Rev. G Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photo Design Resources Related Parts
