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LM27964SQX-I Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM27964SQX-I Datasheet(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. V IN pin voltage -0.3V to 6.0V SCL, SDIO, VIO pin voltages -0.3V to (V IN+0.3V) w/ 6.0V max I Dxx Pin Voltages -0.3V to (V POUT+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) (Note 4) ESD Rating (Note 5) Human Body Model - I Dxx Pins: Human Body Model - All other Pins: 1.0kV 2.0kV Operating Rating (Notes 1, 2) Input Voltage Range 2.7V to 5.5V LED Voltage Range 2.0V to 4.0V Junction Temperature (T J) Range -30˚C to +100˚C Ambient Temperature (T A) Range(Note 6) -30˚C to +85˚C Thermal Properties Juntion-to-Ambient Thermal Resistance ( θ JA), SQA24A Package (Note 7) 41.3˚C/W Electrical Characteristics (Notes 2, 8) Limits in standard typeface are for T J = 25˚C, and limits in boldface type apply over the full operating temperature range. Un- less otherwise specified: V IN = 3.6V; VDxA = 0.4V; VDxB = 0.4V; VDKEY = 0.4V; RSETA =RSETB =RSETK = 16.9k Ω; BankA, BankB, and DKEY = Fullscale Current; ENA, ENB, ENK Bits = “1”; C1=C2=1.0µF, C IN=COUT=2.2µF; Specifications related to output current(s) and current setting pins (I Dxx and ISETx) apply to BankA, BankB and DKEY. (Note 9) Symbol Parameter Condition Min Typ Max Units I Dxx Output Current Regulation BankA or BankB Enabled 3.0V ≤ V IN ≤ 5.5V BankA or BankB Full-Scale ENA or ENB = "1", ENK = “0” 13.77 (-10%) 15.3 16.83 (+10%) mA (%) 3.0V ≤ V IN ≤ 5.5V BankA or BankB Half-Scale ENA or ENB = "1", ENK = “0” 7.5 mA 2.7V ≤ V IN ≤ 3.0V BankA or BankB Full-Scale ENA or ENB = "1", ENK = “0” 15 mA Output Current Regulation Keypad Driver Enabled 3.0V ≤ V IN ≤ 5.5V DKEY Full-Scale ENA = ENB = “0”, ENK = “1” 52.8 (-12%) 60 67.2 (+12%) mA (%) Output Current Regulation BankA and DKEY Enabled (Note 10) 3.2V ≤ V IN ≤ 5.5V R SETA = 8.3k Ω,R SETK = 16.9k Ω V LED = 3.6V BankA and DKEY Full-Scale ENA = ENK = “1”, ENB = “0” 30 DxA mA 60 DKEY R OUT Open-Loop Charge Pump Output Resistance Gain = 3/2 2.75 Ω Gain = 1 1 V DxTH V Dxx 1x to 3/2x Gain Transition Threshold V DxA and/or VDxB Falling 375 mV www.national.com 3 |
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