LTC3862 Series
Multi-Phase Current Mode Step-Up DC/DC Controller
Manufacturer: Analog Devices Inc./Maxim Integrated
Catalog
Multi-Phase Current Mode Step-Up DC/DC Controller
| Part | Synchronous Rectifier | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Output Configuration | Operating Temperature [Max] | Operating Temperature [Min] | Function | Number of Outputs | Clock Sync | Output Phases | Package / Case | Package / Case | Duty Cycle (Max) [Max] | Frequency - Switching [Min] | Frequency - Switching [Max] | Topology | Output Type | Mounting Type | Control Features | Supplier Device Package | Package / Case [y] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | 36 V | 8.5 V | Positive | 85 C | -40 ¯C | Step-Up Step-Up/Step-Down | 2 | 2 | 0.173 " 4.4 mm | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-TSSOP | |||
 Analog Devices Inc./Maxim Integrated | 36 V | 8.5 V | Positive | 150 °C | -40 °C | Step-Up Step-Up/Step-Down | 2 | 2 | 0.173 " 4.4 mm | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-TSSOP | |||
 Analog Devices Inc./Maxim Integrated | 36 V | 4 V | Positive | 125 °C | -40 C | Step-Up Step-Up/Step-Down | 2 | 2 | 24-WQFN Exposed Pad | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-QFN (5x5) | ||||
 Analog Devices Inc./Maxim Integrated | 36 V | 4 V | Positive | 125 °C | -40 C | Step-Up Step-Up/Step-Down | 2 | 2 | 24-SSOP | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-SSOP | 0.154 in 3.9 mm Width | |||
 Analog Devices Inc./Maxim Integrated | 36 V | 5.5 V | Positive | 125 °C | -40 C | Step-Up Step-Up/Step-Down | 2 | 2 | 24-SSOP | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-SSOP | 0.154 in 3.9 mm Width | |||
Analog Devices Inc./Maxim Integrated | 36 V | 5.5 V | Positive | 150 °C | -40 °C | Step-Up Step-Up/Step-Down | 2 | 2 | 24-SSOP | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-SSOP | 0.154 in 3.9 mm Width | |||
Analog Devices Inc./Maxim Integrated | 36 V | 5.5 V | Positive | 150 °C | -40 °C | Step-Up Step-Up/Step-Down | 2 | 2 | 24-WQFN Exposed Pad | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-QFN (5x5) | ||||
Analog Devices Inc./Maxim Integrated | 36 V | 8.5 V | Positive | 85 C | -40 ¯C | Step-Up Step-Up/Step-Down | 2 | 2 | 24-WQFN Exposed Pad | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-QFN (5x5) | ||||
 Analog Devices Inc./Maxim Integrated | 36 V | 4 V | Positive | 150 °C | -40 °C | Step-Up Step-Up/Step-Down | 2 | 2 | 24-SSOP | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-SSOP | 0.154 in 3.9 mm Width | |||
Analog Devices Inc./Maxim Integrated | 36 V | 5.5 V | Positive | 85 C | -40 ¯C | Step-Up Step-Up/Step-Down | 2 | 2 | 0.173 " 4.4 mm | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | 96 % | 75 kHz | 500 kHz | Boost SEPIC | Transistor Driver | Surface Mount | Enable Frequency Control Phase Control Soft Start | 24-TSSOP |
Description
AI
The LTC3862 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.Part NumberVin RangeINTVccVINONVINOFFLTC38624V to 36V5V3.3V2.9VLTC3862-18.5V to 36V10V7.5V7.0VLTC3862-25.5V to 36V10V4.4V3.9VAPPLICATIONSAutomotive, Telecom and Industrial Power Supplies