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ADP1111ARZ-5 데이터시트(PDF) 3 Page - Analog Devices |
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ADP1111ARZ-5 데이터시트(HTML) 3 Page - Analog Devices |
3 / 15 page ADP1111 REV.A 3 ABSOLUTE MAXIMUM RATINGS Parameter Rating Supply Voltage 36 V SW1 Pin Voltage 50 V SW2 Pin Voltage −0.5 V to VIN Feedback Pin Voltage (ADP1111) 5.5 V Switch Current 1.5 A Maximum Power Dissipation 500 mW Operating Temperature Range ADP1111A 0°C to 70°C Storage Temperature Range −65°C to +150°C Lead Temperature (Soldering, 10 sec) 300°C TYPICAL APPLICATION 10µF (OPTIONAL) ILIM VIN SW1 SW2 GND ADP1111AR-5 SUMIDA CD54-220K 22µH 5V 100mA 33µF SENSE 3V INPUT MBRS120T3 Figure 1. 3 V to 5 V Step-Up Converter ESD CAUTION PIN 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 Node of Power Transistor. For step-down con-figuration, connect to VIN. For step-up configu- ration, connect to an inductor/diode. SW2 Emitter Node 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 300 μA. It can be left open if unused. SET Gain Amplifier Input. The amplifier’s positive input is connected to SET pin and its negative input is con- nected to the 1.25 V reference. It can be left open if unused. FB/SENSE On the ADP1111 (adjustable) version this pin is con- nected to the comparator input. On the ADP1111-3.3, ADP1111-5 and ADP1111-12, the pin goes directly to the internal application resistor that sets output voltage. PIN CONFIGURATIONS A0 ILIM SW1 GND VIN SW2 *FIXED VERSIONS FB (SENSE)* SET 1 2 3 4 8 7 6 5 ADP1111 TOP VIEW (Not to Scale) 8-Lead Plastic DIP (N-8) A0 ILIM SW1 GND VIN SW2 *FIXED VERSIONS FB (SENSE)* SET 1 2 3 4 8 7 6 5 ADP1111 TOP VIEW (Not to Scale) 8-Lead Plastic SOIC (SO-8) |
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