SC2612C Semtech, SC2612C Datasheet
SC2612C
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SC2612C Summary of contents
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... The SC2612 is a voltage mode switcher designed for low cost, “point of use” voltage conversion. SC2612 is avail- able with fixed switching frequencies of 600kHz (SC2612A) and 200kHz (SC2612C). The SC2612 has soft start and enable functions and is short circuit protected. The output of the switcher may be set anywhere between 0 ...
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... 2003 Semtech Corp BST DLO DHI STG T LEAD ...
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... Notes: (1) See Gate Resistor selection recommendations (2) 1 square inch of FR4, double sided, 1oz. minimum copper weight. 2003 Semtech Corp 70° ...
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... Block Diagram + FB - VREF COMP 25uA SS/ 2003 Semtech Corp. Ordering Information BST GND Note: (1) Only available in tape and reel packaging. A reel contains 2500 devices ...
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... If a short circuit is applied , the output will be pulled down below it’s trip point and shut down. The device may be restarted by either cycling power, or momentarily pulling SS/EN low. 2003 Semtech Corp. www.DataSheet4U.com Component Selection OUTPUT INDUCTOR OUTPUT INDUCTOR ...
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... Log ç IN ÷ 20 Log FMD 5 R è ø è A 2003 Semtech Corp. Calculate the filter double pole frequency (Fp(lc and calculate ESR Zero frequency (Fz(esr esr ) = Choose an open loop crossover frequency (Fco) no higher than 20% of the switching frequency (Fs). ...
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... E 60 Compensated Error Amp gain Fp(lc) 0 Fz(esr) -20 Filter+modulator +divider gain -40 -60 100.0E+0 1.0E+3 10.0E+3 Frequency (Hz) Fig2: Type 2 Error Amplifier Compensation 2003 Semtech Corp. y due to EA rolloff ) Fz1 Fp1 Total open loop gain Fco D 100.0E+3 1.0E+6 7 SC2612A/C www.DataSheet4U.com www.semtech.com ...
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... SS/EN 0.1uF 5 GND 2003 Semtech Corp. and as short as possible to minimize loop inductance. Minimizing this loop area will a) reduce EMI, b) lower ground injection currents, resulting in electrically “cleaner” grounds for the rest of the system and c) minimize source ringing, resulting in more reliable gate switching signals. ...
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... Out- put Capacitor(s) and the Cin, Q1, Q2 loop. Under no cir- cumstances should AGND be returned to a ground in- 2003 Semtech Corp. side the Cin, Q1, Q2 loop. 6) Vcc for the SC2612 should be supplied from the 5V supply through a 10 decoupled directly to AGND ...
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... IN 90% 12V 85% 80% 75% 70 Output Current (A) Typical Efficiency 100% 80% 60% 40% 20% 0% 0.0 0.2 0.4 0.6 SS/EN Voltage (V) SS/EN Control of duty cycle 2003 Semtech Corp. 1.500 I = 2.00A 12V for BST 18V for V = 12V BST IN 1.498 1.496 1.494 1.492 1.490 Typical Line Regulation ...
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... POWER MANAGEMENT Evaluation Board Schematic & Layout 3. 3.3V - 12V GND J11 C8 220pF C11 EMPTY R7 30k GND J7 2003 Semtech Corp. GND J5 12V 0.1uF C2 10uF VCC BST Si4410DY R3 2 COMP SS/ GND FB Q2 Si4410DY SC2612 D1 C9 EMPTY ...
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... POWER MANAGEMENT Outline Drawing - MSOP-8 Land Pattern - MSOP-8 Contact Information Phone: (805)498-2111 FAX (805)498-3804 2003 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 12 SC2612A/C www.DataSheet4U.com www.semtech.com ...