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60V Low IQ Inverting DC/DC Controller
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LTC3863
60V Low IQ Inverting
DC/DC Controller
DESCRIPTION FEATURES n n n n n n n n n n n n n n Wide Operating VIN Range: 3.5V to 60V
Wide Negative VOUT Range: –0.4V to Beyond –150V
Low Operating IQ = 70µA
Strong High Voltage MOSFET Gate Driver
Constant Frequency Current Mode Architecture
Verified FMEA for Adjacent Pin Open/Short
Selectable High Efficiency Burst Mode® Operation or
Pulse-Skipping Mode at Light Loads
Programmable Fixed Frequency: 50kHz to 850kHz
Phase-Lockable Frequency: 75kHz to 750kHz
Accurate Current Limit
Programmable Soft-Start or Voltage Tracking
Internal Soft-Start Guarantees Smooth Start-Up
Low Shutdown IQ = 7µA
Available in Small 12-Lead Thermally Enhanced
MSOP and DFN Packages The LTC®3863 is a robust, inverting DC/DC PMOS controller optimized for automotive and industrial applications. It
drives a P-channel power MOSFET to generate a negative
output and requires just a single inductor to complete the
circuit. Output voltages from –0.4V to –150V are typically
achievable with higher voltages possible, only limited by …