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 |
|---|---|---|---|---|---|---|---|---|---|
| Analog Devices Inc | DC3162A | 0 | $66.88 | $66.88 | $66.88 | $66.88 | $66.88 | $66.88 | |
| Mouser Electronics | 584-DC3162A | 14 | 1 | $69.22 | $69.22 | $69.22 | $69.22 | $69.22 | $69.22 |
Manufacturer Page
DC326C
Analog Devices Inc.
to 60V. A high efficiency 1.5A, 0.2? switch is included on the die along with all the necessary
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Analog Devices Inc | DC326C | 0 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | |
| Mouser Electronics | 584-DC326C | 3 | 1 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 |
DC433A
Analog Devices Inc.
The LT1961 is a 1.25MHz monolithic boost switching regulator. A high efficiency 1.5A, 0.2? switch
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Analog Devices Inc | DC433A | 0 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | |
| Mouser Electronics | 584-DC433A | 0 | 1 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 |
LTC1929CG-PG | Dual Phase, Step-Down Supply with Hot Swappable Load Share Module, 5V to 14V Input, 3.3VOUT @ 40A
Analog Devices Inc.
DC439A-A: Demo Board for the LTC1929 2-Phase, High Efficiency, Synchronous Step-Down Switching Regulators.
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Mouser Electronics | N/A | 0 |
LT1946EMS8 LT1946AEMS8E | 12VOUT Boost Converter, +5VIN, +12VOUT/400mA and Triple Output TFT LCD Bias Supply, 3.3VIN, VOUT = +23V/5mA, +8V/350mA, -8V/10mA
Analog Devices Inc.
DC459A Demo Board for:
LT1946 1.2MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start
LT1946A
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Analog Devices Inc | DC459A | 0 | $110.35 | $110.35 | $110.35 | $110.35 | $110.35 | $110.35 | |
| Mouser Electronics | 584-DC459A | 0 | 1 | $114.20 | $114.20 | $114.20 | $114.20 | $114.20 | $114.20 |
LTC3700EMS | Step-Down Regulator With LDO, 5 - 9Vin1, 3.3VOUT1 @ 1A, Jumper Sel. 3.3 - 5VIN2, 2.5VOUT2 @ 150mA
Analog Devices Inc.
DC463A: Demo Board for LTC3700 Constant Frequency Step-Down DC/DC Controller with LDO Regulator.
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| DigiKey | DC463A-ND | 0 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | |
| Analog Devices Inc | DC463A | 0 | $107.00 | $107.00 | $107.00 | $107.00 | $107.00 | $107.00 | |
| Mouser Electronics | 584-DC463A | 0 | 1 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 |
DC471A
Analog Devices Inc.
A high efficiency 3A, 0.1? switch is included on the die along with all the necessary oscillator,
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Analog Devices Inc | DC471A | 0 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | $117.70 | |
| Mouser Electronics | 584-DC471A | 0 | 1 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 | $121.81 |
| Win Source | DC471A | 560 |
DC500A-D
Analog Devices Inc.
inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Mouser Electronics | 584-DC500A-D | 0 | 1 | $125.62 | $125.62 | $125.62 | $125.62 | $125.62 | $125.62 |
LT1937ESC6 | 2-Ckt, High Efficiency Constant-Current Single Cell Li-Ion White LED (4) Driver with On-Board Battery
Analog Devices Inc.
DC507A: Demo Board for the LT1937 White LED Step-Up Converter in SC70 and ThinSOT.
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1,000 | 10,000 |
|---|---|---|---|---|---|---|---|---|---|
| Analog Devices Inc | DC507A | 0 | $88.28 | $88.28 | $88.28 | $88.28 | $88.28 | $88.28 | |
| Mouser Electronics | 584-DC507A | 0 | 1 | $91.36 | $91.36 | $91.36 | $91.36 | $91.36 | $91.36 |
| Win Source | DC507A | 1 | 1 |
