Datasheet LTM4604A (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Low Voltage, 4A DC/DC µModule Regulator with Tracking |
| Pages / Page | 22 / 1 — FeaTures. DescripTion. Complete Standalone Power Supply. 1.75% Max Total … |
| File Format / Size | PDF / 840 Kb |
| Document Language | English |
FeaTures. DescripTion. Complete Standalone Power Supply. 1.75% Max Total DC Output Error (–40°C to 125°C)
Model Line for this Datasheet
Text Version of Document
LTM4604A Low Voltage, 4A DC/DC µModule Regulator with Tracking
FeaTures DescripTion
n
Complete Standalone Power Supply
The LTM®4604A is a complete 4A switch mode step-down n ±
1.75% Max Total DC Output Error (–40°C to 125°C)
µModule® (micromodule) regulator with ±1.75% maximum n
Wide Input Voltage Range: 2.375V to 5.5V
total output voltage error. Included in the package are the n
4A DC, 5A Peak Output Current
switching controller, power FETs, inductor and all support n
0.8V to 5V Output
components. Operating over an input voltage range of n
Output Voltage Tracking
2.375V to 5.5V, the LTM4604A supports an output volt- n
UltraFast
TM
Transient Response
age range of 0.8V to 5V, set by a single resistor. This high n Power Good Indicator efficiency design delivers up to 4A continuous current n Current Mode Control (5A peak). Only input and output capacitors are needed n Current Foldback Protection, Parallel/Current Sharing to complete the design. n Up to 95% Efficiency The 0.630mm LGA pads with 1.27mm pitch simplify n Programmable Soft-Start PCB layout by providing standard trace routing and via n Micropower Shutdown: IQ ≤ 7µA placement. (The LTM4604A has smaller pads than the n Overtemperature Protection LTM4604). The low profile package enables utilization of n 9mm × 15mm × 2.32mm LGA and unused space on the bottom of PC boards for high density 9mm × 15mm × 3.42mm BGA Packages point of load regulation. High switching frequency and
applicaTions
a current mode architecture enable a very fast transient response to line and load changes without sacrificing n Telecom and Networking Equipment stability. n Servers n Fault protection features include foldback current protec- Storage Cards n tion, thermal shutdown and a programmable soft-start ATCA Cards n function. The LTM4604A is offered with SnPb (BGA) or Industrial Equipment RoHS-compliant terminal finish. L, LT, LTC, LTM, Linear Technology, LTspice, µModule and the Linear logo are registered trademarks and UltraFast and LTpowerCAD are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion Efficiency vs Output Current 3.3V to 2.5V/4A µModule Regulator
100 VIN = 3.3V VOUT = 2.5V V 95 IN 3.3V 90 10µF 6.3V 85 VIN VOUT PGOOD V 2.5V 80 OUT LTM4604A 4A EFFICIENCY (%) 75 COMP 22µF FB 6.3V RUN/SS TRACK VIN 70 2.37k ×2 GND 65 4604A TA01a 0 1 2 3 4 OUTPUT CURRENT (A) 4604A TA01b 4604afc For more information www.linear.com/LTM4604A 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photograph Related Parts
FeaTures DescripTion
n
Complete Standalone Power Supply
The LTM®4604A is a complete 4A switch mode step-down n ±
1.75% Max Total DC Output Error (–40°C to 125°C)
µModule® (micromodule) regulator with ±1.75% maximum n
Wide Input Voltage Range: 2.375V to 5.5V
total output voltage error. Included in the package are the n
4A DC, 5A Peak Output Current
switching controller, power FETs, inductor and all support n
0.8V to 5V Output
components. Operating over an input voltage range of n
Output Voltage Tracking
2.375V to 5.5V, the LTM4604A supports an output volt- n
UltraFast
TM
Transient Response
age range of 0.8V to 5V, set by a single resistor. This high n Power Good Indicator efficiency design delivers up to 4A continuous current n Current Mode Control (5A peak). Only input and output capacitors are needed n Current Foldback Protection, Parallel/Current Sharing to complete the design. n Up to 95% Efficiency The 0.630mm LGA pads with 1.27mm pitch simplify n Programmable Soft-Start PCB layout by providing standard trace routing and via n Micropower Shutdown: IQ ≤ 7µA placement. (The LTM4604A has smaller pads than the n Overtemperature Protection LTM4604). The low profile package enables utilization of n 9mm × 15mm × 2.32mm LGA and unused space on the bottom of PC boards for high density 9mm × 15mm × 3.42mm BGA Packages point of load regulation. High switching frequency and
applicaTions
a current mode architecture enable a very fast transient response to line and load changes without sacrificing n Telecom and Networking Equipment stability. n Servers n Fault protection features include foldback current protec- Storage Cards n tion, thermal shutdown and a programmable soft-start ATCA Cards n function. The LTM4604A is offered with SnPb (BGA) or Industrial Equipment RoHS-compliant terminal finish. L, LT, LTC, LTM, Linear Technology, LTspice, µModule and the Linear logo are registered trademarks and UltraFast and LTpowerCAD are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion Efficiency vs Output Current 3.3V to 2.5V/4A µModule Regulator
100 VIN = 3.3V VOUT = 2.5V V 95 IN 3.3V 90 10µF 6.3V 85 VIN VOUT PGOOD V 2.5V 80 OUT LTM4604A 4A EFFICIENCY (%) 75 COMP 22µF FB 6.3V RUN/SS TRACK VIN 70 2.37k ×2 GND 65 4604A TA01a 0 1 2 3 4 OUTPUT CURRENT (A) 4604A TA01b 4604afc For more information www.linear.com/LTM4604A 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photograph Related Parts
