SC2602L Semtech Corporation, SC2602L Datasheet
SC2602L
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SC2602L Summary of contents
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... Two SC2602L can be used together to sequence two voltage regulators for power up in telecom systems. The power good of the first SC2602L connected to the en- able of the second SC2602L makes this possible. Typical Application Circuit V_pullup ...
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... SC2602L ± ...
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... V < V < SC2602L = ...
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... > SC2602L www.semtech.com ...
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... MOSFET connected to DH, hence lowering the output voltage. Under Voltage Lockout The under voltage lockout circuit of the SC2602L as- sures that the high-side MOSFET driver outputs remain in the off state whenever the supply voltage drops below set parameters. Lockout occurs if V ...
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... PHASE node through diode D1. This circuit is very useful in cases where only input power of 12V is available. In order to prevent substrate glitching, a small-signal di- ode should be placed in close proximity to the chip with cathode connected to PHASE and anode connected to PGND. 6 SC2602L www.semtech.com ...
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... C7 U1 0.1u 1. SS/SHDN VCC GND 2 13 PWRGD SS/SHDN OVP COMP 4 11 9.6K 36n OCSET SENSE 5 10 PHASE BST BST PGND DL SC2602L R8 2.2 7 SC2602L 12V 10u 1N1418 GND C8 1. 4uH Q2 3.3V OUT R6 C11 C10 + 10u R7 www.semtech.com GND ...
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... Output Ripple Voltage Ch1: Vo_rpl 5V 3.3V OUT PIN Descriptions www.DataSheet4U.com Ch1: Vo_rpl 5V 1.3V OUT OUT 2005 Semtech Corp. Gate Drive Waveforms Ch1: Top FET = 12A Ch2: Bottom FET Ch1 FET = 12A Ch2: Bottom FET 8 SC2602L www.semtech.com ...
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... POWER MANAGEMENT Typical Characteristics (Cont.) Ch1: Vo_rpl 5V 1.3V OUT OUT www.DataSheet4U.com 2005 Semtech Corp. Ch1: Top FET = 12A Ch2: Bottom FET 9 SC2602L www.semtech.com ...
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... Start Up Mode 2005 Semtech Corp. Ch1: Vin Ch2: Vss Ch3: Top Gate Ch4: Vout Vin = 5V Vout = 3.3V Vbst = 12V Iout = S.C. Iout = S.C. Iout = S.C. Iout = S.C. Iout = S.C. Ch1: Vin Ch2: Vss Ch3: Top Gate Ch4: Vout Vin = 5V Vout = 3.3V Iout = 2A Vbst = 12V 10 SC2602L www.semtech.com ...
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... C 1.25Vdc 0.5Vdc 0.8Vdc Fig. 2. SC2602L small signal model. The control model of SC2602L control loop small signal www.DataSheet4U.com can be depicted in Fig. 2. This model can also be used in SPICE kind of simulator to generate loop gain Bode plots. The bandgap reference is 0.8V and trimmed to +/-1% accuracy. The desired output voltage can be achieved by setting the resistive divider network, R1 and R2 ...
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... Step 4. Choose crossover frequency and calculate 5 compensator Step 5. Calculate the compensator C: Step 6. Generate Bode plot and check the phase mar- gin. In this case, the phase margin is about 85 ensures the loop stability SC2602L = F o 2.516 KHz = F esr 7.958 KHz F sw < F esr x_over ...
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... Applications Information (Cont.) www.DataSheet4U.com Bode plot of the control loop 2005 Semtech Corp. Loop Gain Mag (dB) 100 50 mag 0.01 0 kHz Loop Gain Phase (Degree phase 135 180 0.01 0 kHz 100 100 SC2602L www.semtech.com ...
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... BSC 1.27 BSC - - h .010 .020 0.25 0.50 L .016 .028 .041 0.40 0.72 1.04 (.041) (1.04 0° 8° 0° 8° aaa .004 0.10 bbb .010 0.25 ccc .008 0. (L1) A DET A IL -H- DIMENSIONS INCHES MILLIMET E RS (.205) (5.20 .118 3.00 P .050 1.27 X .024 0.60 Y .087 2.20 Z .291 7.40 SC2602L www.semtech.com ...