UCC2803

` Qualification in Accordance With AEC-Q100†
` Qualified for Automotive Applications
` Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval
` ESD Protection Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
` 100-A Typical Starting Supply Current
` 500-A Typical Operating Supply Current
` Operation to 1 MHz
` Internal Soft Start
` Internal Fault Soft Start
` Internal Leading-Edge Blanking of the Current Sense Signal
` 1-Amp Totem-Pole Output
` 70-ns Typical Response from Current-Sense to Gate Drive Output
` 1.5% Tolerance Voltage Reference
` Same Pinout as UC3842 and UC3842A
† Contact factory for details. Q100 qualification data available on request.

V_CC voltage * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 V
V_CC current * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Output current, I_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±1 A
Output energy, (Capacitive Load) . . . . . . . . . . . . . . . . . . . .20 J
Analog Inputs (FB, CS) . . . . . . . . . . . . . . . . . . . . .−0.3 V to 6.3 V
Power Dissipation at T_A < +25 (D package) . . . . . . . . . 0.65 W
Storage temperature range, Tstg . . . . . . . . . . . . .−65to 150
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds . . . 300

† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

‡ Unless otherwise indicated, voltages are reference to ground and currents are positive into and negative out of the specified terminals.

* In normal operation V_CC is powered through a current limiting resistor. Absolute maximum of 12 V applies when V_CC is driven from a low impedance source such that I_CC does not exceed 30 mA (which includes gate drive current requirement).

The UCC2800/1/2/3/4/5 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and dc-to-dc fixed frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC2842/3/4/5 family and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC2800/1/2/3/4/5 family offers choice of maximum duty cycle and critical voltage levels. Lower reference parts such as the UCC2803 and UCC2805 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC2802 and UCC2804 make these ideal choices for use in off-line power supplies.

The UCC280xQDRQ1 series is specified for the automotive temperature range of −40 to 125, and qualified in accordance with AEC-Q100 stress test qualification for integrated circuits.