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MAX724ECK Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX724ECK Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 12 page 8V ≤ VIN ≤ 40V 5A/2A Step-Down, PWM, Switch-Mode DC-DC Regulators 2 _______________________________________________________________________________________ Input Voltage .................................................. 45V Switch Voltage with Respect to Input Voltage................ 50V Switch Voltage with Respect to Ground Pin (VSW Negative) (Note 1) ..................................................... 35V Feedback Pin Voltage................................ -0.3V, +10V Operating Temperature Ranges MAX72_CCK ..................................... 0°C to +70°C MAX72_ECK.................................... -40°C to +85°C Junction Temperature Ranges MAX72_CCK .................................... 0°C to +125°C MAX72_ECK .................................. -40°C to +125°C Storage Temperature Range ................... -65°C to +160°C Lead Temperature (soldering, 10sec).................... +300°C ELECTRICAL CHARACTERISTICS (VIN = 25V, Tj = TMIN to TMAX, unless otherwise noted.) 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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. PARAMETER CONDITIONS MIN TYP MAX UNITS Switch-On Voltage (Note 2) MAX724 Tj ≥ 0°C 1.85 Tj < 0°C 2.10 Tj ≥ 0°C Tj < 0°C 2.50 MAX726 1.2 1.7 Switch-Off Leakage MAX724 Tj = +25°C 5 300 µA Tj = +25°C 10 500 ABSOLUTE MAXIMUM RATINGS ISW = 1A ISW = 5A ISW = 0.5A ISW = 2A VIN ≤ 25V, VSW = 0V VIN = 40V, VSW = 0V VIN ≤ 25V, VSW = 0V VIN = 40V, VSW = 0V MAX726 Tj = +25°C 150 Tj = +25°C 250 2.30 V VFB = 2.5V, VIN ≤ 40V 8.5 11 Supply Current (Note 3) mA 85 90 Maximum Duty Cycle % Tj = +25°C 90 100 110 Tj = +25°C 20 Switching Frequency kHz VFB = grounded through 2kΩ (Note 5) Tj ≤ +125°C 85 120 MAX724 5.5 6.5 8.5 Switch-Current Limit (Note 5) A MAX726 2.0 2.6 3.2 0.03 0.1 Switching Frequency Line Regulation %/V Input Supply Voltage Range 8.0 40.0 V Tj ≥ 0°C 3.5 4.8 V Normal Mode 7.3 8.0 Start-Up Mode (Note 4) Tj < 0°C 3.5 5.0 Minimum Supply Voltage V |
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