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LM2663 Scheda tecnica(PDF) 3 Page - Texas Instruments |
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LM2663 Scheda tecnica(HTML) 3 Page - Texas Instruments |
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3 / 19 page  LM2662, LM2663 www.ti.com SNVS002D – JANUARY 1999 – REVISED MAY 2013 Electrical Characteristics Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full Operating Junction Temperature Range. Unless otherwise specified: V+ = 5V, FC = Open, C1 = C2 = 47 μF. (1) Symbol Parameter Condition Min Typ Max Units V+ Supply Voltage RL = 1k Inverter, LV = Open 3.5 5.5 Inverter, LV = GND 1.5 5.5 V Doubler, LV = OUT 2.5 5.5 IQ Supply Current No Load FC = V+ (LM2662) 1.3 4 LV = Open SD = Ground (LM2663) mA FC = Open 0.3 0.8 ISD Shutdown Supply Current (LM2663) 10 μA VSD Shutdown Pin Input Voltage (LM2663) Shutdown Mode 2.0 (2) V Normal Operation 0.3 IL Output Current 200 mA ROUT Output Resistance(3) IL = 200 mA 3.5 7 Ω fOSC Oscillator Frequency(4) OSC = Open FC = Open 7 20 kHz FC = V+ 55 150 fSW Switching Frequency(5) OSC = Open FC = Open 3.5 10 kHz FC = V+ 27.5 75 IOSC OSC Input Current FC = Open ±2 μA FC = V+ ±10 PEFF Power Efficiency RL (500) between V + and OUT 90 96 % IL = 200 mA to GND 86 VOEFF Voltage Conversion Efficiency No Load 99 99.96 % (1) In the test circuit, capacitors C1 and C2 are 47 μF, 0.2Ω maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce output voltage and efficiency. (2) In doubling mode, when Vout > 5V, minimum input high for shutdown equals Vout − 3V. (3) Specified output resistance includes internal switch resistance and capacitor ESR. (4) For LM2663, the oscillator frequency is 150 kHz. (5) The output switches operate at one half of the oscillator frequency, fOSC = 2fSW. Test Circuits Figure 1. LM2662 and LM2663 Test Circuits Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM2662 LM2663 |
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