DocumentationDatasheet
Application Note
- AN110 - LTM4601 DC/DC uModule Thermal Performance
- AN119A - Powering Complex FPGA-Based Systems Using Highly Integrated DC/DC uModule Regulator Systems
- AN119B - Powering Complex FPGA-Based Systems Using Highly Integrated DC/DC uModule Regulator Systems
Design Note
Reliability Data
Product Selector Card
LT Journal
Press Release
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ltspice
- LTM4601 Demo Circuit - 12A DC/DC uModules with PLL, Output Tracking & Margining (12V to 1.5V @ 12A)
- LTM4601 Demo Circuit - 12A DC/DC µModules with PLL, Output Tracking & Margining (4.5-20V to .9V @ 12A)
- LTM4601 Demo Circuit - 2-Phase Parallel 12A DC/DC µModules with PLL, Output Tracking & Margining (4.5-20V to .9V @ 24A)
- LTM4601-1 Demo Circuit - 12A DC/DC uModules with PLL, Output Tracking & Margining (12V to 1.5V @ 12A)
Features
- Complete Switch Mode Power Supply
- Wide Input Voltage Range: 4.5V to 20V
- 12A DC Typical, 14A Peak Output Current
- 0.6V to 5V Output Voltage
- Output Voltage Tracking and Margining
- Parallel Multiple μModule Regulators for Current Sharing
- Differential Remote Sensing for Precision Regulation (LTM4601 Only)
- PLL Frequency Synchronization
- ±1.5% Regulation
- Current Foldback Protection (Disabled at Start-Up)
- SnPb or RoHS Compliant Finish
- UltraFast™ Transient Response
- Current Mode Control
- Up to 95% Efficiency at 5VIN, 3.3VOUT
- Programmable Soft-Start
- Output Overvoltage Protection
- Small Footprint, Low Profile
(15mm × 15mm × 2.82mm) Surface Mount LGA and
(15mm × 15mm × 3.42mm) BGA Packages
Typical Application
Description
The LTM®4601 is a complete 12A step-down switch mode DC/DC power supply with onboard switching controller, MOSFETs, inductor and all support components. The μModule® regulator is housed in small surface mount 15mm × 15mm × 2.82mm LGA and 15mm × 15mm × 3.42mm BGA packages. Operating over an input voltage range of 4.5V to 20V, the LTM4601 supports an output voltage range of 0.6V to 5V as well as output voltage tracking and margining. The high efficiency design delivers 12A continuous current (14A peak). Only bulk input and output capacitors are needed to complete the design.
The low profile and light weight package easily mounts in unused space on the back side of PC boards for high density point of load regulation. The μModule regulator can be synchronized with an external clock for reducing undesirable frequency harmonics and allows PolyPhase® operation for high load currents.
A high switching frequency and adaptive on-time current mode architecture deliver a very fast transient response to line and load changes without sacrificing stability. An onboard differential remote sense amplifier can be used to accurately regulate an output voltage independent of load current. The onboard remote sense amplifier is not available in the LTM4601-1.
| LTM4601 | LTM4601A | LTM4601HV | LTM4601AHV | |
|---|---|---|---|---|
| Vin Max | 20V | 20V | 28V | 28V |
| On Board Remote Sense |
LTM4601 Yes LTM4601-1 No |
LTM4601A Yes LTM4601A-1 No |
Yes |
Yes |
| Back Side Pads | 118 | 135 (for stronger solder joint stability) | 118 | 135 (for stronger solder joint stability) |
15mm × 15mm × 3.42mm BGA,15mm × 15mm x 2.82mm LGA
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTM4601AEV#PBF | LGA | 133 | E | $24.07 | $16.85 |
| LTM4601AEV-1#PBF | LGA | 133 | E | $23.43 | $16.40 |
| LTM4601AEY#PBF | BGA | 133 | E | $25.73 | $18.01 |
| LTM4601AHVEV#PBF | LGA | 133 | E | $29.14 | $20.40 |
| LTM4601AHVEY#PBF | BGA | 133 | E | $30.80 | $21.56 |
| LTM4601AHVIV#PBF | LGA | 133 | I | $32.06 | $22.44 |
| LTM4601AHVIY#PBF | BGA | 133 | I | $33.87 | $23.71 |
| LTM4601AHVMPV#PBF | LGA | 133 | MP | $57.50 | $40.25 |
| LTM4601AHVMPY | BGA | 133 | MP | $74.34 | $52.05 |
| LTM4601AHVMPY#PBF | BGA | 133 | MP | $59.16 | $41.41 |
| LTM4601AIV#PBF | LGA | 133 | I | $26.49 | $18.54 |
| LTM4601AIV-1#PBF | LGA | 133 | I | $25.77 | $18.04 |
| LTM4601AIY#PBF | BGA | 133 | I | $28.30 | $19.81 |
| LTM4601AIY-1#PBF | BGA | 133 | I | $27.43 | $19.20 |
| LTM4601EV#PBF | LGA | 118 | E | $25.05 | $16.50 |
| LTM4601EV-1#PBF | LGA | 118 | E | $24.21 | $15.95 |
| LTM4601EY#PBF | BGA | 118 | E | $26.87 | $17.70 |
| LTM4601EY-1#PBF | BGA | 118 | E | $24.45 | $17.11 |
| LTM4601HVEV#PBF | LGA | 118 | E | $30.56 | $20.15 |
| LTM4601HVIV#PBF | LGA | 118 | I | $33.65 | $22.17 |
| LTM4601HVIY#PBF | BGA | 118 | I | $33.36 | $23.36 |
| LTM4601IV#PBF | LGA | 118 | I | $27.55 | $18.15 |
| LTM4601IV-1#PBF | LGA | 118 | I | $26.64 | $17.55 |
| LTM4601IY#PBF | BGA | 118 | I | $29.28 | $19.29 |
| LTM4601IY-1#PBF | BGA | 118 | I | $26.74 | $18.71 |
| LTM4601HVEY#PBF | BGA | 118 | E | $32.33 | $21.32 |
| LTM4601AEY-1#PBF | BGA | 133 | E | $25.06 | $17.54 |
| LTM4601IY-1 | BGA | 118 | I | $40.23 | $28.15 |
| LTM4601IY | BGA | 118 | I | $41.03 | $28.73 |
| LTM4601AIY | BGA | 133 | I | $43.50 | $30.45 |
| LTM4601AHVIY | BGA | 133 | I | $49.06 | $34.35 |
| LTM4601AIY-1 | BGA | 133 | I | $42.63 | $29.84 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1041A-A | LTM4601 Demo Board | 4.5V ≤ VIN ≤ 20V, Vout = 0.6V to 5V @ 12A | $65.00 | |
| DC1043A-A | LTM4601 Demo Board | LTM4601(x2), 5V ≤ VIN ≤ 20V, Vout = 0.6V to 3.3V @ 20A | $75.00 | |
| DC1043A-B | LTM4601 Demo Board | LTM4601(x3), 5V ≤ VIN ≤ 20V, Vout = 0.6V to 3.3V @ 30A | $85.00 | |
| DC1043A-C | LTM4601 Demo Board | LTM4601(x4), 5V ≤ VIN ≤ 20V, Vout = 0.6V to 3.3V @ 40A | $95.00 | |
| DC1118A-A | LTM4601EV Demo Board | LTM4601(x2), 5V ≤ VIN ≤ 20V, Vout1 = 3.3V @ 10A, Vout2 = 2.5V @ 12A | $75.00 | |
| DC1118A-B | LTM4601EV Demo Board | LTM4601(x3), 5V ≤ VIN ≤ 20V, Vout1 = 3.3V @ 10A, Vout2 = 2.5V @ 12A, Vout3 = 1.8V @ 12A | $85.00 | |
| DC1118A-C | LTM4601EV Demo Board | LTM4601(x4), 5V ≤ VIN ≤ 20V, Vout1 = 3.3V @ 10A, Vout2 = 2.5V @ 12A, Vout3 = 1.8V @ 12A, Vout4 = 1.5V @ 12A | $95.00 |