1FEATURES

2• Dual Integrated 75V N-Channel MOSFETs

• Ultra-Wide Input Voltage Range: 4.25V to 75V

• Integrated High Voltage Bias Regulator

• Adjustable Output Voltage

• 1.5% Feedback Reference Accuracy

• Current Mode Control with Selectable

Compensation

• Wide Bandwidth Error Amplifier

• Integrated Current Sensing and Limiting

• 50% Maximum Duty Cycle Limit

• Single Resistor Oscillator Programming

• Oscillator Synchronization Capability

• Programmable Soft-Start

• Enable / Under-Voltage Lockout (UVLO) Pin

• Thermal Shutdown

PACKAGE

• HTSSOP-14EP (Exposed Pad)

DESCRIPTION

The LM5015 high voltage switch mode regulator

features all the functions necessary to implement

efficient high voltage Two-Switch Forward and Two-

Switch Flyback regulators, using a minimum of

external components. This easy to use regulator

integrates high side and low side 75 Volt N-Channel MOSFETs with a minimum 1 Amp peak current limit.

The voltage across the MOSFETs employed in the

two-switch topology is clamped to the input voltage,

allowing the input voltage range to approach the

rating of the MOSFETs. The regulator control method is based on current mode control providing inherent

ease of loop compensation and line feed-forward for

superior rejection of input transients.

The operating frequency is set with a single resistor

and is programmable up to 750 kHz. The oscillator

can also be synchronized to an external clock. Additional protection features include cycle-by-cycle

current limiting, thermal shutdown, under-voltage

lockout and remote shutdown capability. The device

is available in the HTSSOP-14EP package featuring

an exposed die attach pad to enhance thermal dissipation.