LT8642-1 | 18V, 10A Synchronous Step-Down Silent Switcher
Analog Devices Inc.
Demonstration circuit 3162A is a 18V, 10A synchronous step-down Silent Switcher® with spread spectrum frequency modulation featuring the LT8642-1. The demo board is designed for 1.2V output from a 2.8V to 18V input. The LT8642-1 is a compact, low emission, high efficiency, and high speed synchronous monolithic stepdown switching regulator. Special Silent Switcher architecture minimizes EMI emissions. Selectable spread spectrum mode can further improve EMI performance. Fast minimum on-time of 20ns enables high VIN to low VOUT conversion at high frequency.
The LT8642-1 switching frequency can be programmed either via a resistor or external clock over a 200kHz to 3MHz range. The default frequency of demo circuit 3162A is 2MHz. The LT8642-1 SYNC/MODE pin on the demo board is grounded (JP1 at BURST position) by default for low ripple Burst Mode® operation. Spread spectrum mode and forced continuous mode can be selected respectively by moving JP1 shunt. To synchronize to an external clock, move JP1 to FCM/SYNC and apply the external clock to the SYNC terminal.
The LT8642-1 data sheet gives a complete description of the part, operation, and application information. The data sheet must be read in conjunction with this demo manual for demo circuit 3162A. The LT8642-1 is assembled in a 3mm × 4mm LQFN package with exposed pads for low thermal resistance. The layout recommendations for low EMI operation and maximum thermal performance are available in the data sheet section Low EMI PCB Layout and Thermal Considerations.
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | 505-DC3162A-ND | 3 | 1 | $79.87 | $79.87 | $79.87 | $79.87 | $79.87 | $79.87 |
| Analog Devices Inc | DC3162A | 0 | $66.88 | $66.88 | $66.88 | $66.88 | $66.88 | $66.88 | |
| element14 APAC | DC3162A | 5 | 1 | * $74.04 | * $74.04 | * $74.04 | * $74.04 | * $74.04 | * $74.04 |
| Farnell | DC3162A | 5 | 1 | * $72.30 | * $72.30 | * $72.30 | * $72.30 | * $72.30 | * $72.30 |
| Mouser Electronics | 584-DC3162A | 13 | 1 | $69.56 | $69.56 | $69.56 | $69.56 | $69.56 | $69.56 |
| Newark | DC3162A | 5 | 1 | $80.26 | $80.26 | $80.26 | $80.26 | $80.26 | $80.26 |
| Verical Marketplace | DC3162A | 10 | 1 | $76.43 | $76.43 | $76.43 | $76.43 | $76.43 | $76.43 |
Manufacturer Page
STEVAL-1PS01EJR
STMicroelectronics
Power Management IC Development Tools Evaluation board based on the ST1PS01EJR 400 mA nano-quiescent synchronous step-down converter
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | 497-18372-ND | 1 | 1 | $19.74 | $19.74 | $19.74 | $19.74 | $19.74 | $19.74 |
| Ameya360 | STEVAL-1PS01EJR | 10 | $26.00 | $26.00 | $26.00 | $26.00 | $26.00 | $26.00 | |
| Anglia | STEVAL-1PS01EJR | 3 | |||||||
| Arrow North American Components | STEVAL-1PS01EJR | 5 | 1 | $4.01 | $4.01 | $4.01 | $4.01 | $4.01 | $4.01 |
| AVNET Asia Pacific | STEVAL-1PS01EJR | 0 | 1 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
| AVNET Express | STEVAL-1PS01EJR | 5 | 1 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
| element14 APAC | STEVAL-1PS01EJR | 2 | 1 | * $21.60 | * $21.17 | * $21.17 | * $21.17 | * $21.17 | * $21.17 |
| Farnell | STEVAL-1PS01EJR | 2 | 1 | * $20.97 | * $20.97 | * $20.97 | * $20.97 | * $20.97 | * $20.97 |
| Future Electronics | STEVAL-1PS01EJR | 10 | 1 | $21.00 | |||||
| Mouser Electronics | 511-STEVAL-1PS01EJR | 18 | 1 | $20.35 | $20.35 | $20.35 | $20.35 | $20.35 | $20.35 |
| Newark | STEVAL-1PS01EJR | 2 | 1 | $23.14 | $23.14 | $23.14 | $23.14 | $23.14 | $23.14 |
| RS Components | STEVAL-1PS01EJR | 0 | $18.38 | ||||||
| Verical Marketplace | STEVAL-1PS01EJR | 5 | 2 | $15.69 | $1.65 | $1.65 | $1.65 | $1.65 | $1.65 |
Wide Vin 2.5A Buck Regulator Evaluation Module
Texas Instruments
Wide Vin 2.5A Buck Regulator Evaluation Module
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | LM5005EVAL-ND | 0 | 1 | $37.01 | $37.01 | $37.01 | $37.01 | $37.01 | $37.01 |
| AVNET Europe | LM5005EVAL | 0 | 1 | * $0.00 | * $0.00 | * $0.00 | * $0.00 | * $0.00 | * $0.00 |
| Mouser Electronics | 926-LM5005EVAL | 0 | 1 | $0.00 |
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | 296-31302-ND | 0 | 1 | $248.75 | $248.75 | $248.75 | $248.75 | $248.75 | $248.75 |
| Arrow North American Components | TRF3705EVM | 0 | 1 | $265.33 | $262.67 | $257.45 | $254.87 | $247.30 | $0.00 |
| AVNET Express | TRF3705EVM | 0 | 1 | $242.78 | $242.78 | $242.78 | $242.78 | $242.78 | $242.78 |
| element14 APAC | TRF3705EVM | 1 | 1 | * $295.63 | * $295.63 | * $295.63 | * $295.63 | * $295.63 | * $295.63 |
| Farnell | TRF3705EVM | 1 | 1 | * $307.63 | * $307.63 | * $307.63 | * $307.63 | * $307.63 | * $307.63 |
| Mouser Electronics | 595-TRF3705EVM | 1 | 1 | $257.43 | $257.43 | $257.43 | $257.43 | $257.43 | $257.43 |
| Newark | TRF3705EVM | 0 | 1 | $265.70 | $259.48 | $259.48 | $259.48 | $259.48 | $259.48 |
| Texas Instruments | TRF3705EVM | 32 | 1 | $199.00 | $199.00 | $199.00 | $199.00 | $199.00 | $199.00 |
| Verical Marketplace | TRF3705EVM | 4 | 1 | $253.37 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
LTC3805EMSE Isolated Demo Board | 36V ≤ VIN ≤ 72V, VOUT = 3.3V/3A
Analog Devices Inc.
Demonstration circuit 1045 is a Telecom isolated DC/DC converter featuring the LTC3805 constant frequency current mode flyback controller. The DC1045 converts 36V to 72V input voltage to an isolated 3A of output current at 3.3V. The 200kHz constant frequency operation is maintained down to very light load to reduce low frequency noise generated over a wide range of load current.
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | DC1045A-ND | 0 | 1 | $149.81 | $126.83 | $25.00 | $25.00 | $25.00 | $25.00 |
| Arrow North American Components | DC1045A | 0 | 1 | $123.41 | $86.31 | $84.60 | $83.75 | $81.26 | $80.45 |
| Mouser Electronics | 584-DC1045A | 0 | 1 | $91.82 | $91.82 | $91.82 | $91.82 | $91.82 | $91.82 |
| Verical Marketplace | DC1045A | 31 | 1 | $87.35 | $87.35 | $87.35 | $87.35 | $87.35 | $87.35 |
LM2738 550kHz 1.5A Step-Down DC-DC Switching Regulator in space saving LLP package EVM
Texas Instruments
LM2738 550kHz 1.5A Step-Down DC-DC Switching Regulator in space saving LLP package EVM
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | 296-49683-ND | 0 | 1 | $238.80 | $238.80 | $238.80 | $238.80 | $238.80 | $238.80 |
| Arrow North American Components | LM2738YSDEVAL | 0 | 1 | $265.33 | $262.67 | $257.45 | $254.87 | $247.30 | $244.83 |
| AVNET Express | LM2738YSDEVAL | 0 | 1 | $59.78 | $59.78 | $59.78 | $59.78 | $59.78 | $59.78 |
| element14 APAC | LM2738YSDEVAL | 0 | 1 | * $61.92 | * $61.92 | * $61.92 | * $61.92 | * $61.92 | * $61.92 |
| Farnell | LM2738YSDEVAL | 0 | 1 | * $60.00 | * $60.00 | * $60.00 | * $60.00 | * $60.00 | * $60.00 |
| Mouser Electronics | 926-LM2738YSDEVAL | 0 | 1 | $258.72 | $258.72 | $258.72 | $258.72 | $258.72 | $258.72 |
| Texas Instruments | LM2738YSDEVAL | 26 | 1 | $199.00 | $199.00 | $199.00 | $199.00 | $199.00 | $199.00 |
EVAL-ADM2687EEBZ
Analog Devices Inc.
The ADM2682E/ADM2687E are fully integrated 5 kV rms signal and power isolated data transceivers with ?15 kV ESD protection and are suitable for high speed communication on multipoint transmission lines. The ADM2682E / ADM2687Einclude an integrated 5 kV rms isolated dc-to-dc power supply that eliminates the need for an external dc-to-dc isolation block.They are designed for balanced transmission lines and comply with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E).The devices integrate Analog Devices, Inc., iCoupler? technology to combine a 3-channel isolator, a three-state differential line driver, a differential input receiver, and Analog Devices isoPower? dc-to-dc converter into a single package. The devices are powered by a single 5 V or 3.3 V supply, realizing a fully integrated signal and power isolated RS-485 solution.The ADM2682E/ADM2687E drivers have an active high enable.An active low receiver enable is also provided, which causes thereceiver output to enter a high impedance state when disabled.The devices have current limiting and thermal shutdown features to protect against output short circuits and situations where bus contention may cause excessive power dissipation. The parts are fully specified over the industrial temperature range and are available in a highly integrated, 16-lead, wide-body SOIC package with >8 mm creepage and clearance.The ADM2682E/ADM2687E contain isoPower technology that uses high frequency switching elements to transfer power throughthe transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. Refer to AN-0971 Application Note, Recommendations for Control of Radiated Emissions with isoPower Devices, for details on board layout considerations.Applications Isolated RS-485/RS-422 interfaces Industrial field networks Multipoint data transmission systems
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | EVAL-ADM2687EEBZ-ND | 0 | 1 | $104.65 | $104.65 | $104.65 | $104.65 | $104.65 | $104.65 |
| Analog Devices Inc | EVAL-ADM2687EEBZ | 0 | $82.76 | $82.76 | $82.76 | $82.76 | $82.76 | $82.76 | |
| Arrow North American Components | EVAL-ADM2687EEBZ | 0 | 1 | $77.58 | $77.58 | $77.58 | $77.58 | $77.58 | $77.58 |
| Farnell | EVAL-ADM2687EEBZ | 0 | 1 | * $64.91 | * $64.91 | * $64.91 | * $64.91 | * $64.91 | * $64.91 |
| Mouser Electronics | 584-EVAL-ADM2687EEBZ | 5 | 1 | $85.65 | $85.65 | $85.65 | $85.65 | $85.65 | $85.65 |
| Newark | EVAL-ADM2687EEBZ | 0 | $70.32 | $70.32 | $70.32 | $70.32 | $70.32 | $70.32 | |
| Verical Marketplace | EVAL-ADM2687EEBZ | 16 | 1 | $81.89 | $81.89 | $81.89 | $81.89 | $81.89 | $81.89 |
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Mouser Electronics | 667-EVM-3YSX50B14 | 0 | 1 |
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Mouser Electronics | 667-EVM-3YSX50B14 | 0 | 1 |
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | P3Y103DKR-ND | 0 | $0.00 | $0.37 | $0.33 | $0.31 | $0.25 | $0.16 | |
| Future Electronics | EVM-3YSX50B14 | 2000 | $0.15 | ||||||
| Mouser Electronics | 667-EVM-3YSX50B14 | 0 | 1 |