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SC471 Datasheet(PDF) 3 Page - Semtech Corporation |
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SC471 Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 27 page 3 © 2006 Semtech Corp. SC471/SC471A www.semtech.com POWER MANAGEMENT Absolute Maximum Rating Electrical Characteristics Parameter Symbol Min Max Units DH, BST to GND (DC) DH, BST to GND (transient - 100nsec max) -0.3 -2.0 +30 +33 V DL to GND (DC) DL to GND (transient - 100nsec max) -0.3 -2.0 +6.0 +6.0 V LX to GND (DC) LX to GND (transient - 100nsec max) -0.3 -2.0 +25 +28 V BST to LX -0.3 +6.0 V RTN to GND -0.3 +0.3 V VCC to RTN -0.3 +6.0 V D0, D1, EN, FB, G0, G1, ILIM, PGOOD, VOUT to RTN -0.3 VCC + 0.3 V Operating Junction Temperature Range T J -40 +125 o C Storage Temperature Range T STG -65 +150 o C Thermal Resistance, Junction to Ambient(1) θ JA 45 o C/Watt Peak IR Reflow Temperature, (10-40sec) T PKG +260 o C ESD Rating (Human Body Model) 2 kV Exceeding the specifications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time may affect device reliability. Note: 1) Calculated from package in still air, mounted 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards. Test Conditions: V BAT = 15V, VOUT = 1.5V, TA = 25 o C, 0.1% resistor dividers; VCC = 5.0V. Parameter Conditions 25°C -40° to 85°C Units Min Typ Max Min Max Input Supplies VBAT Input Voltage 3.0 25 V VCC Input Voltage 4.5 5.5 V VCC Shutdown Current EN = 0V 1 5 μA VCC Operating Current FB > 0.8V 500 1000 μA Controller FB On-Time Threshold 0 to 85°C 0.75 0.7436 0.7564 V -40 to 85°C 0.7425 0.7575 Output Voltage Adjust Range(1) 0.75 5.25 V D0/D1 Pull-Down Resistance D0/D1 to RTN; SC471 G0/G1 = 5V; SC471A G0/G1 = 0V 15 40 Ω |
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