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SC4524B Datasheet(PDF) 3 Page - Semtech Corporation |
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SC4524B Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 18 page SC4524B 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) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards. (2) Tested according to JEDEC standard JESD22-A114-B. Electrical Characteristics Unless otherwise noted, V IN = 12V, VBST = 15V, VSS = 2.2V, -40°C < TA = TJ < 125°C, ROSC = 12.1kΩ. Absolute Maximum Ratings V IN Supply Voltage ……………………………… -0.3 to 24V BST Voltage ……………………………………………… 40V BST Voltage above SW …………………………………… 24V SS Voltage ……………………………………………-0.3 to 3V FB Voltage …………………………………………… -0.3 to V IN SW Voltage ………………………………………… -0.6 to V IN SW Transient Spikes (10ns Duration)……… -2.5V to V IN +1.5V Peak IR Reflow Temperature …………………………. 260°C ESD Protection Level(2) ………………………………… 2000V Thermal Information Junction to Ambient (1) ……………………………… 36°C/W Junction to Case (1) ………………………………… 5.5°C/W Maximum Junction Temperature……………………… 150°C Storage Temperature ………………………… -65 to +150°C Lead Temperature (Soldering) 10 sec ………………… 300°C Parameter Conditions Min Typ Max Units Input Supply Input Voltage Range 3 16 V V IN Start Voltage V IN Rising 2.70 2.82 2.95 V V IN Start Hysteresis 225 mV V IN Quiescent Current V COMP = 0 (Not Switching) 2 2.6 mA V IN Quiescent Current in Shutdown V SS/EN = 0, VIN = 12V 40 50 µA Error Amplifier Feedback Voltage 0.980 1.000 1.020 V Feedback Voltage Line Regulation V IN = 3V to 16V 0.005 %/V FB Pin Input Bias Current V FB = 1V, VCOMP = 0.8V -170 -340 nA Error Amplifier Transconductance 280 µΩ-1 Error Amplifier Open-loop Gain 60 dB COMP Pin to Switch Current Gain 8 A/V COMP Maximum Voltage V FB = 0.9V 2.4 V COMP Source Current V FB = 0.8V, VCOMP = 0.8V 17 µA COMP Sink Current V FB = 1.2V, VCOMP = 0.8V 25 Internal Power Switch Switch Current Limit (Note 1) 2.6 3.3 4.3 A Switch Saturation Voltage I SW = -2.6A 250 400 mV Recommended Operating Conditions Input Voltage Range ……………………………… 3V to 16V Maximum Output Current ……………………………… 2A |
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