LTC3862 - Multi-Phase Current Mode Step-Up DC/DC Controller
The LTC®3862 is a two phase constant frequency, current mode boost and SEPIC controller that drives N-channel power MOSFETs. Two phase operation reduces system filtering capacitance and inductance requirements.
The operating frequency can be set with an external resistor over a 75kHz to 500kHz range and can be synchronized to an external clock using the internal PLL. Multi-phase operation is possible using the SYNC input, the CLKOUT output and the PHASEMODE control pin allowing 2-, 3-, 4-, 6- or 12-phase operation.
Other features include an internal 5V LDO with undervoltage lockout protection for the gate drivers, a precision RUN pin threshold with programmable hysteresis, soft-start and programmable leading edge blanking and maximum duty cycle.
Features
Typical Application  | Applications
Packaging   |
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC3862EFE#PBF | TSSOP-24 | E | $4.87 | $3.41 |
| LTC3862EFE#TRPBF | TSSOP-24 | E | $3.47 | |
| LTC3862EGN#PBF | SSOP-24 | E | $4.70 | $3.29 |
| LTC3862EGN#TRPBF | SSOP-24 | E | $3.35 | |
| LTC3862EUH#PBF | 5x5 QFN-24 | E | $4.70 | $3.29 |
| LTC3862EUH#TRPBF | 5x5 QFN-24 | E | $3.35 | |
| LTC3862HFE#PBF | TSSOP-24 | H | $5.89 | $4.12 |
| LTC3862HFE#TRPBF | TSSOP-24 | H | $4.18 | |
| LTC3862HGN#PBF | SSOP-24 | H | $5.71 | $4.00 |
| LTC3862HGN#TRPBF | SSOP-24 | H | $4.06 | |
| LTC3862HUH#PBF | 5x5 QFN-24 | H | $5.71 | $4.00 |
| LTC3862HUH#TRPBF | 5x5 QFN-24 | H | $4.06 | |
| LTC3862IFE#PBF | TSSOP-24 | I | $5.46 | $3.82 |
| LTC3862IFE#TRPBF | TSSOP-24 | I | $3.88 | |
| LTC3862IGN#PBF | SSOP-24 | I | $5.30 | $3.71 |
| LTC3862IGN#TRPBF | SSOP-24 | I | $3.77 | |
| LTC3862IUH#PBF | 5x5 QFN-24 | I | $5.30 | $3.71 |
| LTC3862IUH#TRPBF | 5x5 QFN-24 | I | $3.77 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC1286A-A | LTC3862EGN Demo Board | 5V to 36VIN, 48VOUT @ 5A, Multiphase Boost Controller | $125.00 |
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