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ADP1173 датащи(PDF) 3 Page - Analog Devices |
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ADP1173 датащи(HTML) 3 Page - Analog Devices |
3 / 16 page ADP1173 –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 (ADP1173) . . . . . . . . . . . . . . . . . . . 5 V Sense Pin Voltage (ADP1173, –3.3, –5, –12) . . . . . . . . . 36 V Maximum Power Dissipation . . . . . . . . . . . . . . . . . . 500 mW Maximum Switch Current . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A Operating Temperature Range . . . . . . . . . . . . . 0 °C to +70°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 ratings for extended periods of time may affect device reliability. ORDERING GUIDE Output Package Model Voltage Options* ADP1173AN ADJ N-8 ADP1173AR ADJ SO-8 ADP1173AN-3.3 3.3 V N-8 ADP1173AR-3.3 3.3 V SO-8 ADP1173AN-5 5 V N-8 ADP1173AR-5 5 V SO-8 ADP1173AN-12 12 V N-8 ADP1173AR-12 12 V SO-8 *N = Plastic DIP, SO = Small Outline Package. ILIM VIN SW1 ADP1173 FB SW2 GND 4 5 1 2 3 8 7 SET AO 6 + L1* 100µH 470µF 75k Ω 56 Ω *L1 = COILTRONICS CTX100-4 4X NICAD OR ALKALINE CELLS 240 Ω 470µF + 470k Ω 24k Ω IRF7203 + 470µF +5V OUTPUT AT 100mA Figure 1. Step-Up or Step-Down Converter PIN CONFIGURATIONS N-8 SO-8 8-Lead Plastic DIP 8-Lead Plastic SO 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 ADP1173 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. AO ILIM SW1 GND VIN SW2 *FIXED VERSIONS 1 2 3 4 8 7 6 5 ADP1173 TOP VIEW (Not to Scale) FB (SENSE)* SET AO ILIM SW1 GND VIN SW2 *FIXED VERSIONS 1 2 3 4 8 7 6 5 ADP1173 TOP VIEW (Not to Scale) FB (SENSE)* SET 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 Node of Power Transistor. For step-down configuration, connect to VIN; for step-up configuration, 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 drop 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 the SET pin and negative input is connected to 1.245 V reference. FB/SENSE On the ADP1173 (adjustable) version this pin is connected to the comparator input. On the ADP1173-3.3, ADP1173-5 and ADP1173-12, the pin goes directly to the internal application resistor that sets the output voltage. |
Аналогичный номер детали - ADP1173 |
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Аналогичное описание - ADP1173 |
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