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SC1109CSTR Datasheet(PDF) 2 Page - Semtech Corporation |
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SC1109CSTR Datasheet(HTML) 2 Page - Semtech Corporation |
2 / 17 page SYNCHRONOUS PWM CONTROLLER WITH DUAL LOW DROPOUT REGULATOR CONTROLLERS © 2000 SEMTECH CORP. PRELIMINARY - October 16, 2000 SC1109 2 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com Parameter Symbol Maximum Units VCC to GND -0.3 to +7 V STBY to GND -0.3 to +7 V BST to GND -0.3 to +15 V PHASE to GND -1 to +8 V LDOSx -0.3 to 5 V Operating Temperature Range T A 0 to +70 °C Junction Temperature Range T J 0 to +125 °C Storage Temperature Range T STG -65 to +150 °C Lead Temperature (Soldering) 10 seconds T L 300 °C Thermal Impedance Junction to Ambient θ JA 130 °C/W Thermal Impedance Junction to Case θ JC 30 °C/W ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS Unless specified: VOSENSE = V O; Vcc=4.75V to 5.25V; STBY=4.75V to 5.25V; BST = 11.4V to 12.6V; TA = 0 to 70°C PARAMETER SYM CONDITIONS MIN TYP MAX UNITS Supply (V CC) Supply Voltage V CC 4.4 5 5.25 V Supply Quiescent current I CCQ V CC = 5V, SS/EN = 0V 6 8 12 mA Supply Operating current I CC V CC = 5V, SS/EN > 1V 20 mA Switching Section Output Voltage (1) V TT I O = 2A 1.188 1.200 1.212 V Load Regulation (1) LOAD REG I O = 0A to 6A 1 % Line Regulation (1) LINE REG Vin=4.75V to 5.25V ±0.15 % Oscillator Frequency f OSC 175 200 225 kHz Oscillator Max Duty Cycle D 90 95 % Current Limit trip (Vin-V PHASE) Vtrip Ilimit 180 200 220 mV Gain (A OL) (3) GAIN VTT VOSENSE to V O 35 dB Under Voltage Lock Out Threashold VCC HIGH 4.2 V Hysteresis VCC HYST 200 mV Power Good Power Good Threshold Voltage PG th 88 112 % Soft Start / Enable SS/EN Source current (2) Isource SS/EN V SS/EN = 0V to 3.5V 10 µA SS/EN Sink current (2) Isink SS/EN V SS/EN = 0V to 3.5V 2 µA Shutdown Voltage V SS/EN 600 mV Note: Exceeding the Absolute Maximum Ratings may cause irreversible damage to the device. |
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