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LP3933 数据表(PDF) 4 Page - National Semiconductor (TI) |
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LP3933 数据表(HTML) 4 Page - National Semiconductor (TI) |
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4 / 18 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. V (SW, FB, WLED1-4, CLED1-2, R1-2, G1-2, B1-2) pins: Voltage to GND (Notes 3, 4) −0.3V to +7.2V V DD1,VDD2,VDD_IO −0.3V to +6.0V Voltage on Logic Pins -0.3V to V DD_IO + 0.3V, with 6.0V max I (R1, G1, B1, R2, G2, B2) (Note 5) 150 mA I(V REF)10 µA Continuous Power Dissipation (Note 6) Internally Limited Junction Temperature (T J-MAX) 125˚C Storage Temperature Range −65˚C to +150˚C Maximum Lead Temperature (Reflow soldering, 3 times) (Note 7) 260˚C ESD Rating (Notes 8, 14) Human Body Model: 2 kV Machine Model: 200V Operating Ratings (Notes 1, 2) V (SW, FB, WLED1-4, CLED1-2, R1-2, G1-2, B1-2) 3.0V to 6.0V V DD1,VDD2 (Note 4) 2.65 to 2.9V V DD_IO 1.8V to V DD1,2 Recommended Load Current 0 mA to 300 mA Junction Temperature (T J) Range −40˚C to +125˚C Ambient Temperature (T A) Range (Note 9) −40˚C to +85˚C Thermal Properties Junction-to-Ambient Thermal Resistance ( θ JA), SLE32A Package (Note 10) 72˚C/W Electrical Characteristics (Notes 2, 11) Limits in standard typeface are for T J = 25˚C. Limits in boldface type apply over the operating ambient temperature range (−40˚C ≤ T A ≤ +85˚C). Unless otherwise noted, specifications apply to the LP3933 Functional Block Diagram (pg. 5) with: V DD1 =V DD2 = 2.775V, CVDD1 =CVDD2 =CVDDIO = 0.1 µF, COUT =CIN = 10 µF, CVREF = 0.1 µF, L1 = 10 µH (Note 12). Symbol Parameter Condition Min Typ Max Units I DD Standby Supply Current (V DD1 and VDD2 current) NSTBY = L (register) SCK, SS, SI, NRST = H 1 5 µA No-Load Supply Current (V DD1 and VDD2 current, boost off) NSTBY = H (reg.) EN_BOOST = L (reg.) SCK, SS, SI, NRST = H 170 300 µA Full Load Supply Current (V DD1 and VDD2 current, boost on) NSTBY = H (reg.) EN_BOOST = H (reg.) SCK, SS, SI, NRST = H All Outputs Active 1mA I DD_IO V DD_IO Standby Supply Current NSTBY = L (register) SCK, SS, SI, NRST = H 1 5 µA V DD_IO Operating Supply Current 1 MHz Clock Frequency C L =50pFatSOpin 20 µA V REF Reference Voltage (Note 13) I(V REF) ≤ 1 nA, Test Purposes Only 1.205 −2 1.23 1.255 +2 V % Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics tables. Note 2: All voltages are with respect to the potential at the GND pins (GND1-4, GND_BOOST, GND_WLED, GND_RGB). Note 3: Battery/Charger voltage should be above 6V no more than 10% of the operational lifetime. Note 4: Voltage tolerance of LP3933 above 6.0V relies on fact that VDD1 and VDD2 (2.775V) are available (ON) at all conditions. If VDD1 and VDD2 are not available (ON) at all conditions, National Semiconductor does not guarantee any parameters or reliability for this device. Note 5: The total load current of the boost converter should be limited to 300 mA. Note 6: Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at TJ = 160˚C (typ.) and disengages at TJ = 140˚C (typ.). Note 7: For detailed soldering specifications and information, please refer to National Semiconductor Application Note 1125: Laminate CSP/FBGA. Note 8: The Human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each pin. MIL-STD-883 3015.7 www.national.com 4 |
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