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FAN1537PB Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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FAN1537PB Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 8 page PRODUCT SPECIFICATION FAN1537 REV. 1.1.1 3/20/02 3 Electrical Characteristics (Operating Conditions: VIN ≤ 7V, TJ=25°C unless otherwise specified.) The • denotes specifications which apply over the specified operating temperature range of 0°C to 125°C junction temperature. Notes: 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. 2. Power dissipation is determined by input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/output voltage range. 3. ESR = 0.2 Ω. 4. For adjust only, VOUT = VREF (1 + R1/R2) Parameter Conditions Min. Typ. Max. Units Output Voltages 10mA ≤ IOUT ≤ 1A 4.75V ≤ VIN ≤ 7V • • • 1.764 1.742 2.450 2.420 3.234 3.200 1.8 1.8 2.500 2.500 3.300 3.300 1.836 1.858 2.550 2.580 3.366 3.400 V Output Voltage 3.3V Output, VIN = 4.5V, IOUT = 1A • 3.2 V Time to Output Voltages Valid From VIN ≥ 4.75V 5 msec Reference Voltage, VREF 10mA ≤ IOUT ≤ 1A 4.75V ≤ VIN ≤ 7V • 1.225 1.210 1.250 1.250 1.275 1.290 V Line Regulation1,2 (both outputs) 4.75V ≤ VIN ≤ 7V, IOUT = 10mA • 0.005 0.5 % Load Regulation1,2 (both outputs) VIN = 4.75V, 10mA ≤ IOUT ≤ 1A • 0.05 0.5 % Dropout Voltage (3.3V output) ∆VOUT = 1%, IOUT = 1A • 1.100 1.300 V Current Limit (both outputs) VIN = 5V • 1.3 1.5 A Minimum Load Current (both outputs) 4.75V ≤ VIN ≤ 7V • 10 mA Quiescent Current VIN = 7V • 615 mA Ripple Rejection3 (both outputs) f = 120Hz, COUT = 22µF Tantalum, VIN = 5V, IOUT = 1A 60 dB Long-Term Stability TA = 125°C, 1000 hrs. 0.03 1.0 % RMS Output Noise (% of VOUT)TA = 25°C, 10Hz ≤ f ≤ 10kHz 0.003 % Thermal Resistance, Junction to Case SO-8 50 °C/W TO-252 DPAK 3 °C/W SPAK 2 °C/W Thermal Shutdown 155 °C Thermal Shutdown Hysteresis Junction Temperature 10 °C |
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