LTM4636 - 40A DC/DC μModule Regulator
The LTM®4636 is a 40A step-down μModule (power module) switching regulator with a stacked inductor as a heat sink for quicker heat dissipation and cooler operation in a small package. The exposed inductor permits direct contact with airflow from any direction. The LTM4636 can deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only 40°C rise over the ambient temperature. Full-power 40W is delivered, up to 83°C ambient and half-power 20W is supported at 110°C ambient.
The LTM4636 operates at 92%, 90% and 88% efficiency, delivering 15A, 30A and 40A, respectively, to a 1V load 12VIN). The μModule regulator is scalable such that four μModules in current sharing mode deliver 160W with only 40°C rise and 88% efficiency (12VIN, 1VOUT, 400LFM). The LTM4636 is offered in a 16mm × 16mm × 7.07mm BGA package.
Features- Stacked Inductor Acts as Heat Sink
- Wide Input Voltage Range: 4.7V to 15V
- 0.6V to 3.3V Output Voltage Range
- ±1.3% Total DC Output Voltage Error Over Line, Load and Temperature (–40°C to 125°C)
- Differential Remote Sense Amplifier for Precision Regulation
- Current Mode Control/Fast Transient Response
- Frequency Synchronization
- Parallel Current Sharing (Up to 240A)
- Internal or External Compensation
- 88% Efficiency (12VIN, 1VOUT) at 40A
- Overcurrent Foldback Protection
- 16mm × 16mm × 7.07mm BGA Package
Typical Application
 | Applications- Telecom Servers and Networking Equipment
- Industrial Equipment and Medical Systems
Packaging |
Order Information| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|
| LTM4636EY#PBF | 16mm x 16mm x 7.07mm BGA | E | $55.50 | $38.85 |
| LTM4636IY#PBF | 16mm x 16mm x 7.07mm BGA | I | $61.04 | $42.73 |
Demo Boards
| Part Number | Description | Price |
|---|
| DC2230A-A | LTM4636 Demo Board | Buck μModule Regulator, Stacked Inductor, 4.7V ≤ VIN ≤ 15V, Vout = 0.6V to 3.3V @ 40A | $65.00 |
DatasheetPress ReleaseCAD Symbol | Related Products |
