ADP1147AR-5 Analog Devices, ADP1147AR-5 Datasheet
ADP1147AR-5
Related parts for ADP1147AR-5
ADP1147AR-5 Summary of contents
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... Figure 1. High Efficiency Step-Down Converter (Typical Application) REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices ...
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... Extended Commercial Temperature Range . . – +85 C Junction Temperature +150 C Storage Temperature Range . . . . . . . . . . . . – +150 C Lead Temperature (Soldering, 10 sec +300 calculated from the ambient temperature according to the following formulas: ADP1147AN-3.3, ADP1147AN- 110 C/W). ADP1147AR-3.3, ADP1147AR- + ...
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ELECTRICAL CHARACTERISTICS Parameter REGULATED OUTPUT VOLTAGE ADP1147-3.3 ADP1147-5 INPUT DC SUPPLY CURRENT Normal Mode Sleep Mode (ADP1147-3.3) Sleep Mode (ADP1147-5) Shutdown CURRENT SENSE THRESHOLD VOLTAGE ADP1147-3.3 ADP1147-5 SHUTDOWN PIN THRESHOLD OFF-TIME NOTES 1 All limits at temperature extremes are guaranteed ...
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ADP1147-3.3/ADP1147-5 200 150 100 MAXIMUM OUTPUT CURRENT – Amps Figure 3. Selecting R vs. SENSE Maximum Output Current 100 GATE CHARGE 95 ADP1147 SCHOTTKY DIODE 85 ...
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V ) – Volts IN OUT Figure 12. Operating Frequency vs. (V – OUT 155 MAXIMUM ...
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ADP1147-3.3/ADP1147-5 (a) Continuous Mode Operation (b) Power Saving Mode Figure 19. C Waveforms T P-CHANNEL ADP1147-3 P-DRIVE IN 390pF C GROUND T 3300pF SHUTDOWN I SHUTDOWN TH SENSE(–) SENSE(+) 1k 1000pF ...
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APPLICATIONS The ADP1147 family of regulators incorporate a current mode, constant off-time architecture to switch an external P-channel MOSFET. The external MOSFET can be switched at frequen- cies up to 250 kHz. The switching frequency of the device is determined ...
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ADP1147-3.3/ADP1147-5 The formula used to calculate the continuous operating fre- quency is OUT OFF OFF the value of the desired output voltage. ...
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The Schottky diode is in conduction during the MOSFET off- time. A short circuit the most demanding situa- OUT tion on for the diode. During this time it must be capable of delivering I for ...
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ADP1147-3.3/ADP1147-5 Losses are encountered in all elements of the circuit, but the four major sources for the circuit shown in Figure 1 are: 1. The ADP1147 dc bias current. 2. The MOSFET gate charge current The I R ...
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To obtain optimum efficiency the required ESR value 100 m or less. The circuit should also be evaluated with the minimum input voltage. This is done to assure that the power dissipation and junction temperature of the ...
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ADP1147-3.3/ADP1147-5 0.210 (5.33) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic DIP (N-8) 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.325 (8.25) 0.300 (7.62) 0.060 (1.52) PIN 1 0.015 (0.38) MAX 0.130 (3.30) ...