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LM3570SDX Fiches technique(PDF) 3 Page - National Semiconductor (TI) |
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LM3570SDX Fiches technique(HTML) 3 Page - National Semiconductor (TI) |
3 / 13 page Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VIN pin: Voltage to GND -0.3V to 6.0V EN, PWM: Voltage to GND -0.3V to (V IN + 0.3V) w/ 6.0V max Continuous Power Dissipation (Note 3) Internally Limited Junction Temperature (T J-MAX) 150oC Storage Temperature Range -65oC to +150o C Maximum Lead Temperature (Soldering, 10 sec.) (Note 4) ESD Rating(Note 5) Human Body Model Machine Model 2.0kV 200V Operating Ratings(Notes 1, 2) Input Voltage Range 2.7V to 5.5V Junction Temperature (T J) Range -40˚C to +105˚C Ambient Temperature (T A) Range (Note 6) -40˚C to +85˚C Thermal Properties Juntion-to-Ambient Thermal Resistance ( θ JA), LLP14 Package (Note 7) 45˚C/W Electrical Characteristics(Notes 2, 8) Limits in standard typeface and typical values apply for T J =25 oC. Limits in boldface type apply over the operating junction temperature range. Unless otherwise noted, specifications apply to the LM3570 typical Application Circuit (pg.1) with: V IN = 3.6V, V EN = 3.0V, VPWM = 3.0V, VDX=3.6V, RSET = 6.25k Ω,C 1=C2=1.0µF, CIN=2.2µF, COUT=3.3µF(Note 9) Symbol Parameter Condition Min Typ Max Units I Dx Output Current Regulation (All Current Sources Active Total Current=3xI Dx) (Note 10) 3.0V ≤ V IN ≤ 5.5V; 2.5V ≤ V Dx ≤ 3.6V; R SET = 6.25k Ω; I VOUT = 0mA 18.4 20.0 21.6 mA 3.0V ≤ V IN ≤ 5.5V; 2.5V ≤ V Dx ≤ 3.8V; R SET = 8.35k Ω; I VOUT = 0mA 13.6 15.0 16.4 3.0V ≤ V IN ≤ 5.5V; 2.5V ≤ V Dx ≤ 3.9V; R SET = 12.5k Ω; I VOUT = 0mA 10.0 V OUT Regulated Output Voltage 3.3V ≤ V IN ≤ 5.5V; 0mA ≤ I Total ≤ 80mA(Note 11) 4.1 4.3 4.6 V I Dx-MATCH Current Matching Between Any Two Outputs(Note 12) 0.3 % V HR Current Source Headroom Voltage (Note 13) I Dx =95%xIDx(nom.); R SET = 6.25k Ω; (I Dx(nom.) ≈ 20mA) 500 mV I Dx =95%xIDx(nom.) R SET = 8.35k Ω; (I Dx(nom.) ≈ 15mA) 375 I Q Quiescent Supply Current 3.0V ≤ V IN ≤ 5.5V; R SET = open; No Load Current 1.5 2.0 mA 3.0V ≤ V IN ≤ 5.5V; R SET = 6.25k Ω; No Load Current 1.8 I SD Shutdown Supply Current 3.0V ≤ V IN ≤ 5.5V; V(EN) = 0V, V(PWM) = 0V (Note 14) 0.1 1.0 µA R OUT Charge Pump Output Resistance 3.0V ≤ V IN ≤ 5.5V 4 Ω www.national.com 3 |
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