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SC668 Datasheet(PDF) 3 Page - Semtech Corporation |
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SC668 Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 46 page SC668 3 Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not recommended. NOTES: (1) Subscripting for all LDOs (LDOn), n = 1, 2, 3, 4. (2) Tested according to JEDEC standard JESD22-A114-B. (3) Calculated from package in still air, mounted to 3 x 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards. Absolute Maximum Ratings Pin Voltage — IN (V) . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0 Pin Voltage — All Other Pins (V) . . . . . . . . . -0.3 to (V IN + 0.3) LDOn(1) Short Circuit Duration . . . . . . . . . . . . . . .Continuous ESD Protection Level(2) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 Recommended Operating Conditions Ambient Temperature Range (°C). . . . . . . . . -40 ≤ T A ≤ +85 Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . 2.9 ≤ V IN ≤ 5.5 Backlight Sink Voltage (V) . . . . . . . . . . . . . . . 0.05 ≤ V IN ≤ 4.2 Thermal Information Thermal Resistance, Junction to Ambient(3) (°C/W) . . . . 35 Storage Temperature Range (°C). . . . . . . . . . . . -65 to +150 Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . . +260 Unless otherwise noted, T A = +25°C for Typ, -40ºC to +85°C for Min and Max, TJ(MAX) = 125ºC, VIN = 3.7V, CIN = CLDO1 = CLDO2 = CLDO3 = CLDO4 = 1.0µF, C BYP = 22nF, (ESR = 0.03Ω) (1) Parameter Symbol Conditions Min Typ Max Units Supply Specifications Input Supply Voltage V IN 2.9 5.5 V Shutdown Current I Q(OFF) Shutdown, V IN = 4.2V 0.1 2.0 µA Total Quiescent Current I Q Sleep (all LDOs off), EN = V IN (2) 90 135 µA Sleep (all LDOs on), EN = V IN (2) 300 450 8 LEDs on 1.5 LED Sink Electrical Specifications Maximum Total Backlight Current I OUT(MAX) Sum of all active LED currents, V IN above dropout level 200 mA Backlight Current Setting Range I BL Nominal setting for BL1 – BL8 0 25 mA Backlight Current Accuracy I BL_ACC I BLn (3) = 12mA ±1.5 % Backlight Current Matching(4) I BL-BL I BLn (3) = 12mA -3.5 ±0.5 +3.5 % Dropout Voltage(5) V DO One bank of 6 backlights set equal to 20mA 59 mV Current Sink Off-State Leakage Current I BL/FL(OFF) V IN = VBLn (3) = 4.2V 0.1 1 µA Electrical Characteristics |
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