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ADP1108AR-5 Fiches technique(PDF) 3 Page - Analog Devices |
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ADP1108AR-5 Fiches technique(HTML) 3 Page - Analog Devices |
3 / 12 page ADP1108 –3– REV. 0 ABSOLUTE MAXIMUM RATINGS* Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . +36 V SW1 Pin Voltage (VSW1) . . . . . . . . . . . . . . . . . . . . . . . . +50 V SW2 Pin Voltage (VSW2) . . . . . . . . . . . . . . . . . . –0.5 V to VIN Feedback Pin Voltage (ADP1108) . . . . . . . . . . . . . . . . +5.5 V Sense Pin Voltage (ADP1108, 3.3, 5, 12) . . . . . . . . . . . +36 V Maximum Power Dissipation . . . . . . . . . . . . . . . . . . 500 mW Maximum Switch Current . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A Operating Temperature Range . . . . . . . . . . . . . 0 °C to 170°C Storage Temperature Range . . . . . . . . . . . . –65 °C to +150°C Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300 °C *Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ORDERING GUIDE Model Output Voltage Package* ADP1108AN ADJ N-8 ADP1108AR ADJ SO-8 ADP1108AN-3.3 3.3 V N-8 ADP1108AR-3.3 3.3 V SO-8 ADP1108AN-5 5 V N-8 ADP1108AR-5 5 V SO-8 ADP1108AN-12 12 V N-8 ADP1108AR-12 12 V SO-8 *N = Plastic DIP, SO = Small Outline Package. PIN CONFIGURATIONS 8-Lead Plastic DIP 8-Lead SOIC (N-8) (SO-8) 1 2 3 4 8 7 6 5 TOP VIEW (Not to Scale) ADP1108 ILIM VIN SW1 SW2 FB (SENSE)* SET AO GND * FIXED VERSIONS 1 2 3 4 8 7 6 5 TOP VIEW (Not to Scale) ADP1108 ILIM VIN SW1 SW2 FB (SENSE)* SET AO GND * FIXED VERSIONS PIN FUNCTION DESCRIPTIONS Mnemonic Function ILIM For normal conditions this pin is connected to VIN. When lower current is required, a resistor should be connected between ILIM and VIN. Limiting the switch current to 400 mA is achieved by connecting a 220 Ω resistor. VIN Input Voltage. SW1 Collector of Power Transistor. For step-down configuration, connect to VIN. For step-up configuration, connect to an inductor/diode. SW2 Emitter of Power Transistor. For step-down configuration, connect to inductor/diode. For step-up configuration, connect to ground. Do not allow this pin to go more than a diode drop below ground. GND Ground. AO Auxiliary Gain (GB) Output. The open collector can sink 100 µA. SET Gain Amplifier Input. The amplifier has positive input connected to SET pin and negative input connected to 1.245 V reference. FB/SENSE On the ADP1108 (adjustable) version this pin is connected to the comparator input. On the ADP1108-3.3, ADP1108-5 and ADP1108-12, the pin goes directly to the internal application resistor that set output voltage. WARNING! ESD SENSITIVE DEVICE CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADP1108 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. |
Numéro de pièce similaire - ADP1108AR-5 |
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Description similaire - ADP1108AR-5 |
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