LT®3958 is a wide input range, current mode, DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC, or inverting converter. It features an internal low-side N-channel power MOSFET rated for 84V at 3.3A and driven from an internally regulated 7.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of LT3958 can be set with an external resistor over a 100KHz to 1MHz range and can be synchronized to an external clock using the SYNC pin. Application includes automotive, telecom, and industrial.

• Current mode control provides excellent transient response
• Synchronizeable to an external clock, programmable input undervoltage lockout with hysteresis
• Programmable soft-start
• VIN operating range from 5 to 80V (TA = 25°C, VIN = 24V)
• Typical SW pin current limit is 4A (SENSE2 = SENSE1, TA = 25°C)
• Typical SW pin on voltage is 180mV (SW = 2A, TA = 25°C, VIN = 24V)
• Typical FBX pin input current is 70nA (FBX = 1.6V, TA = 25°C, VIN = 24V)
• Typical EN/UVLO voltage hysteresis is 20mV (TA = 25°C, VIN = 24V)
• 36-lead plastic QFN package
• Temperature rating range from -40°C to 125°C

Other details

Brand	ANALOG DEVICES
Part Number	LT3958IUHE#PBF
Quantity	Each
Technical Data Sheet EN

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