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LTC3832 Datasheet(PDF) 8 Page - Linear Technology |
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LTC3832 Datasheet(HTML) 8 Page - Linear Technology |
8 / 24 page 8 LTC3832/LTC3832-1 sn3832 3832fs TEST CIRCUITS FB SS FREQSET COMP IMAX NC NC NC NC G1 G2 SHDN VCC VSHDN VCC PVCC2 PVCC1 PVCC IFB 6800pF 6800pF 3832 F02 GND PGND SENSE– LTC3832 SENSE+ COMP FB VCOMP VFB G1 G2 IFB VCC PVCC1 5V PVCC2 6800pF 0.1 µF 10 µF 6800pF G1 RISE/FALL G2 RISE/FALL 3832 F03 IMAX GND PGND LTC3832 + Figure 2 Figure 3 BLOCK DIAGRA (LTC3832-1) – + – + R S PVCC1 G1 VCC/PVCC2 G2 PGND FB VREF VREF + 10% 3832 BD2 BG Q Q R POR S FFG2 ENABLE G2 Q PWM QSS VREF VREF + 10% MAX ERR 12 µA INTERNAL OSCILLATOR COMP SS POWER DOWN DISABLE GATE DRIVE THERMAL SHUTDOWN 2.2V QC 1.2V PVCC1 VCC + 2.5V – + V APPLICATIO S I FOR ATIO OVERVIEW The LTC3832/LTC3832-1 are voltage mode feedback, synchronous switching regulator controllers (see Block Diagram) designed for use in high power, low voltage step-down (buck) converters. They include an onboard PWM generator, a precision reference trimmed to ±0.8%, two high power MOSFET gate drivers and all necessary feedback and control circuitry to form a complete switch- ing regulator circuit. The PWM loop nominally runs at 300kHz. The LTC3832 includes a current limit sensing circuit that uses the topside external N-channel power MOSFET as a current sensing element, eliminating the need for an external sense resistor. |
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Similar Description - LTC3832 |
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