The LTM4630AEV is a dual 18A or single 36A output switchingmode step-down DC/DC µModule® (micromodule)regulator with wider VOUT range and higher efficiencythan LTM4630. Included in the package are the switchingcontrollers, power FETs, inductors and all supportingcomponents. Operating from an input voltage range of4.5V to 18V, the LTM4630AEV supports two outputs eachwith an output voltage range of 0.6V to 8V, each set by asingle external resistor. Its high efficiency design deliversup to 18A continuous current for each output. Only a fewinput and output capacitors are needed. The LTM4630Ais pin compatible with the LTM4620 and LTM4620A (dual13A, single 26A) and the LTM4630 (dual 18A, single 36A).
The device supports frequency synchronization, multiphaseoperation, Burst Mode operation and output voltagetracking for supply rail sequencing and has an onboardtemperature diode for device temperature monitoring. Highswitching frequency and a current mode architecture enablea very fast transient response to line and load changeswithout sacrificing stability.
Fault protection features include overvoltage andovercurrent protection. The LTM4630AEV is offered in 16mm× 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mmBGA packages.
*Maximum VIN = 15V and VOUT = 5.3V with date code before 1720
FeaturesVOUTLTM46300.6V to 1.8VLTM4630-10.8% DC and 3% Transient Accuracy0.6V to 1.8VLTM4630AHigher Light Load Efficiency0.6V to 5.3VFeature
- Dual 18A or Single 36A Output
- Input Voltage Range: 4.5V to 18V (after date code 1720*)
- Output Voltage Range: 0.6V to 8V (after date code 1720*)
- ±1.5% Maximum Total DC Output Error Over Line, Load and Temperature
- Higher Light Load Efficiency and Wider VOUT Range Than LTM4630
- Differential Remote Sense Amplifier
- Current Mode Control/Fast Transient Response
- Multiphase Parallel Current Sharing Up to 144A
- Internal Temperature Monitor
- Pin Compatible with the LTM4620A (Dual 13A, Single 26A) and LTM4630 (Dual 18A, Single 36A)
- Adjustable Switching Frequency or Synchronization
- Overcurrent Foldback Protection
- Selectable Burst Mode® Operation, Pulse Skipping Mode Operation
- Soft-Start/Voltage Tracking
- Output Overvoltage Protection
- 16mm × 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mm BGA Packages
Applications
- Telecom and Networking Equipment
- Storage and ATCA Cards
- Industrial Equipment
