Datasheet LTM8028 (Analog Devices)

LTM8028 36VIN, UltraFast, Low Output Noise 5A µModule Regulator
FeaTures DescripTion
n
High Performance 5A Linear Regulator with
The LTM®8028 is a 36VIN, 5A µModule® regulator, con-
Switching Step-Down Converter for High Efficiency
sisting of an UltraFast™ 5A linear regulator preceded by a n
Digitally Programmable VOUT: 0.8V to 1.8V
high efficiency switching regulator. In addition to providing n
Input Voltage Range: 6V to 36V
tight output regulation, the linear regulator automatically n
Very Tight Tolerance Over Temperature, Line, Load
controls the output voltage of the switcher to provide
and Transient Response
optimal efficiency and headroom for dynamic response. n
Low Output Noise: 40μVRMS (10Hz to 100kHz)
The output voltage is digitally selectable in 50mV incre- n
Parallel Multiple Devices for 10A or More
ments over a 0.8V to 1.8V range. An analog margining n
Accurate Programmable Current Limit to Allow
function allows the user to adjust system output voltage
Asymmetric Power Sharing
over a continuous ±10% range, and a single-ended feed- n Analog Output Margining: ±10% Range back sense line may be used to mitigate IR drops due to n Synchronization Input parasitic resistance. n Stable with Low ESR Ceramic Output Capacitors n 15mm × 15mm × 4.92mm Surface Mount The LTM8028 is packaged in a compact (15mm × 15mm × BGA Package 4.92mm) overmolded ball grid array (BGA) package suit- n SnPb or RoHS Compliant Finish able for automated assembly by standard surface mount equipment. The LTM8028 is available with SnPb (BGA) or RoHS compliant terminal finish.
applicaTions
L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks and UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the n FPGA and DSP Supplies property of their respective owners. n High Speed I/O
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Typical applicaTion Low Output Noise, 1.2V, 5A µModule Regulator
VOUT 20mV/DIV V LTM8028 V V IN LINEAR VOUT OUT IN 1.2V 9V TO 15V REGULATOR 150k SENSEP 5A RUN IOUT 10µF MARGA BKV 2A/DIV 0.01µF IMAX ∆IOUT = 0.5A TO 5A 1µs RISE/FALL TIME SS PGOOD 137µF 10µs/DIV 82.5k SYNC + 100µF RT GND VOB VO0 VO1 VO2 FULL LOAD f = 500kHz 470µF NOISE AND RIPPLE 8028 TA01a 500µV/DIV 1µs/DIV MEASURED PER AN70, 150MHz BW 8028 TA01b 8028fb For more information www.linear.com/LTM8028 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Revision History Typical Application Related Parts