Datasheet LTM4620A (Analog Devices)

LTM4620A Dual 13A or Single 26A DC/DC µModule Regulator
FEATURES DESCRIPTION
n
Dual 13A or Single 26A Output
The LTM®4620A is a complete dual 13A, or single 26A out- n
Wide Input Voltage Range: 4.5V to 16V
put switching mode DC/DC power supply with wider VOUT n
Output Voltage Range: 0.6V to 5.3V
range and higher efficiency than the LTM4620. Included n
±1.5% Maximum Total DC Output Error
in the package are the switching controller, power FETs, n
Multiphase Current Sharing with Multiple
inductors and all supporting components. Operating from
LTM4620As Up to 100A
an input voltage range of 4.5V to 16V, the LTM4620A n Higher Efficiency and Wider VOUT Range Than LTM4620 supports two outputs each with an output voltage range n Differential Remote Sense Amplifier of 0.6V to 5.3V, set by a single external resistor. Its high n Current Mode Control/Fast Transient Response efficiency design delivers up to 13A continuous current n Adjustable Switching Frequency for each output. Only a few input and output capacitors n Overcurrent Foldback Protection are needed. n Frequency Synchronization n The device supports frequency synchronization, mul- Internal Temperature Monitor n tiphase operation, Burst Mode® operation and output Output Overvoltage Protection n voltage tracking for supply rail sequencing and has an Pin Compatible with the LTM4628 (Dual 8A) and onboard temperature diode for device temperature mon- LTM4620 (Dual 13A) n itoring. High switching frequency and a current mode Thermally Enhanced (15mm × 15mm × 4.41mm) architecture enable a very fast transient response to line LGA Package and (15mm × 15mm × 5.01mm) BGA and load changes without sacrificing stability. Package Fault protection features include overvoltage and over-
APPLICATIONS
current protection. The power module is offered in n Telecom and Networking Equipment a proprietary space saving and thermally enhanced n Industrial Equipment 15mm × 15mm × 4.41mm LGA package and 15mm L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Burst Mode, LTpowerCAD × 15mm × 5.01mm BGA package. The LTM4620A is and PolyPhase are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, available with SnPb (BGA) or RoHS compliant terminal 5929620, 6100678, 6144194, 6177787, 6304066 and 6580258. Other patents pending. finish.
TYPICAL APPLICATION 26A, 5V Output DC/DC µModule
®
Regulator
INTVCC INTVCC
5V Efficiency vs IOUT
4.7µF 5k 100 VOUT PGOOD MODE_PLLIN CLKOUT INTVCC EXTVCC PGOOD1 VIN V V 95 IN OUT1 7V TO 16V 22µF 100µF 10k* 25V 120k TEMP VOUTS1 6.3V ×4 RUN1 DIFFOUT ×2 220pF 90 RUN2 SW1 TRACK1 V LTM4620A FB1 EFFICIENCY (%) 5.1V* TRACK2 VFB2 8.25k 85 0.1µF INTVCC fSET COMP1 PHASMD COMP2 8V TO 5V EFF (650kHz) 12V TO 5V EFF (750kHz) VOUTS2 VOUT 80 * PULL-UP RESISTOR AND VOUT2 5V 1 3 5 8 10 12 14 16 19 21 23 ZENER ARE OPTIONAL 100µF 26A SW2 TOTAL OUTPUT CURRENT (A) 6.3V PGOOD2 ×2 4620A TA01b SGND GND DIFFP DIFFN PGOOD 4620A TA01a 4620afc For more information www.linear.com/LTM4620A 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Related Parts Design Resources