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LM3661 Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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LM3661 Datasheet(HTML) 5 Page - National Semiconductor (TI) |
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5 / 17 page  Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage PVIN, VDD to SGND −0.2V to +6V PGND to SGND −0.2V to +0.2V EN, SYNC/MODE, VSEL to SGND −0.2V to +6V FB, ISEL, SW −0.2V to (VDD +0.2V) Storage Temperature Range −45˚C to 150˚C Lead Temperature (Soldering, 10 sec.) 260˚C Operating Ratings Input Voltage Range 2.7V to 5.5V Operating Temperature -30˚C to 85˚C Junction Temperature (Note 3) −30˚C to +125˚C Minimum ESD Rating (Human Body Model, C = 100 pF, R = 1.5 k Ω) ±2kV Thermal properties Thermal Resistance ( θ JA) 170˚C/W Electrical Characteristics (Note 2) Specifications with standard typeface are for T J = 25˚C, and those in bold face type apply over the full Operating Temperature Range (T A =TJ = −30˚C to +85˚C). Unless otherwise specified, PVIN =VDD = EN = SYNC/MODE = VSEL = 3.6V, ISEL= 0V, C OUT = 22 µF. Symbol Parameter Remarks Min Typ Max Units V FB, PWM Feedback Voltage, PWM Mode V IN = 2.7V to 5.5V LM3661TL-1.25, V SEL =0 1.019 1.05 1.082 V LM3661TL-1.25, V SEL=VIN 1.213 1.25 1.288 V LM3661TL-1.35, V SEL =0 1.019 1.05 1.082 V LM3661TL-1.35, V SEL =VIN 1.310 1.35 1.391 V LM3661TL-1.40, V SEL =0 1.019 1.05 1.082 V LM3661TL-1.40, V SEL =VIN 1.358 1.40 1.442 V V FB, LINEAR Feedback Voltage, Linear Mode V IN= 2.7V to 5.5V, IOUT = 1mA LM3661TL-1.25, V SEL =0 0.998 1.05 1.103 V LM3661TL-1.25, V SEL=VIN 1.188 1.25 1.313 V LM3661TL-1.35, V SEL =0 0.998 1.05 1.103 V LM3661TL-1.35, V SEL =VIN 1.283 1.35 1.418 V LM3661TL-1.4, V SEL=0 0.998 1.05 1.103 V LM3661TL-1.4, V SEL=VIN 1.33 1.4 1.47 V V OVP OVP Comparator Hysteresis Voltage (Note 5) SYNC/MODE = V IN V IN = 2.7V to 5.5V 64 90 mV OVP Trip point SYNC/MODE = V IN V IN = 3.6V 50 70 90 mV I SHDN Shutdown Supply Current EN = 0V 0.5 5 µA I Q,PWM DC Bias Current into V DD (V OUT set to 1.35V) PWM mode, no switching (SYNC/MODE = V DD,VFB=2V) 425 µA I Q,LIN DC Bias Current into V DD No-Load, Linear mode (SYNC/MODE = 0V) 29 40 µA R DSON(P) Pin-pin Resistance for PFET 250 m Ω R DSON(N) Pin-pin Resistance for NFET 180 m Ω I lim_-1.25 Switch Peak Current Limit PWM mode I SEL=VIN,VIN = 2.7V to 4.5V TBD 454 TBD mA PWM mode I SEL =0,VIN = 2.7V to 4.5V TBD TBD TBD mA I lim_-1.35/-1.4 Switch Peak Current Limit PWM mode I SEL=VIN,VIN = 2.7V to 4.5V 473 518 550 mA PWM mode I SEL =0,VIN = 2.7V to 4.5V 565 615 650 mA I lim_LIN Max Current in Linear Mode SYNC/MODE = 0V, FB = 0V V IN = 2.7V to 5.5V 35 60 90 mA www.national.com 5 |
Similar Part No. - LM3661_05 |
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Similar Description - LM3661_05 |
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