LTM8051

RECOMMENDED FOR NEW DESIGNS

Quad 40V_IN Silent Switcher μModule Regulator with Configurable 1.2A Output Array

Data Sheet (Rev. B) Product Selection Table

Part Models: 3
1ku List Price: Starting From $10.63

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Part Details

Four Complete Step-Down Switching Power Supplies
Low Noise Silent Switcher^® Architecture
CISPR22 Class B Compliant
CISPR25 Class 5 Compliant
Wide Input Voltage Range: 3V to 40V
Wide Output Voltage Range: 0.8V to 8V
Selectable Switching Frequency: 300kHz to 3MHz

1.2A Continuous Output Current per Channel at 12V_IN, 3.3V_OUT, TA = 85°C
1.5A Continuous Output Current per Channel at 12V_IN, 3.3V_OUT, TA = 60°C
Multiphase or Multi-μModule Parallelable for Increased Output Current
Compact Package (6.25mm × 11.25mm × 2.22mm) Surface Mount BGA

Part Models: 3
1ku List Price: Starting From $10.63

Documentation

Data Sheet 1

LTM8051: Quad 40V_IN Silent Switcher μModule Regulator with Configurable 1.2A Output Array Data Sheet (Rev.B) 10/23/2020

User Guide 1

DC2860A - Demo Manual (Rev.0) 12/03/2020

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTM8051EY#PBF	91-Lead BGA (11.25mm x 6.25mm x 2.22mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM8051IY	91-Lead BGA (11.25mm x 6.25mm x 2.22mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM8051IY#PBF	91-Lead BGA (11.25mm x 6.25mm x 2.22mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule
		PCN21_0159_Form Material_Report Delta Qualification Matrix
LTM8051EY#PBF	PRODUCTION
LTM8051IY	PRODUCTION
LTM8051IY#PBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice 1

LTM8051 - Step-Down (Buck) Regulators

Models for the following parts are available in LTspice:

LTM8051

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

LTM8051 Demo Board | 40V, 1.2A Quad Step-Down Silent Switcher μModule Regulator

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Product Details

Demonstration circuit 2860A is a quad step-down DC/DC switching converter featuring the LTM8051 silent switcher μModule^® regulator. The demo board is designed to deliver quad 5V/1.2A, 3.3V/1.2A, 2.5V/1.2A and 1.8V/1.2A outputs from a 7V to 40V input. The Silent Switcher^® architecture minimizes EMI while achieving high efficiency at frequencies up to 3MHz. The modes of operation (Burst Mode^® operation or discontinuous mode/SYNC) are jumper selectable. Burst Mode operation improves efficiency at light loads.

The LTM8051 is a fixed frequency PWM regulator with current mode control scheme. The switching frequency of channel 1 and channel 4 is set by an appropriate resistor (R11) from the RT14 pin to ground. The switching frequency of channel 2 and channel 3 is set by another appropriate resistor (R23) from the RT23 pin to ground. The RUN14 pin (RUN14 terminal) can be used to set the LTM8051 channel 1 and channel 4 in micro power shut-down mode, while the RUN23 pin (RUN23 terminal) can be used to set the channel 2 and channel 3 in shutdown mode. Output tracking and soft start pins (TRSS1/TRSS2/TRSS3/TRSS4) allow user control of output voltage ramp rate during startup. The power good output of each channel (PG1/PG2/PG3/PG4) will be low when that channel’s output voltage is outside of the ±7.5% regulation window.

The LTM8051 data sheet gives a complete description of the operation and application information. The data sheet must be read in conjunction with the demo manual.

Resources

DC2860A - Demo Manual (Rev.0)
12/3/2020

DC2860A Schematic
6/6/2024

DC2860A Design File
6/6/2024

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