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MB39C031 Datasheet(PDF) 1 Page - Cypress Semiconductor |
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MB39C031 Datasheet(HTML) 1 Page - Cypress Semiconductor |
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1 / 69 page  MB39C031 2ch Buck DC/DC Converter + 1ch LDO with I 2C Interface and SW FET Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Document Number: 002-08407 Rev. *B Revised May 18, 2017 Description The MB39C031 contains 2ch buck DC/DC converter and 1ch LDO. It is possible to supply the main power supply line in a system by using only one chip. The current mode system is adopted for the DC/DC converter, and it is possible to use the chip inductor with the high switching frequency operation which contains internal SW FET. The MB39C031 contains the output setting resistor and the the phase compensation circuit, and contributes to reduce the number of external components and the mounting area. Also, it contains the CTL input pin which can control the ON/OFF for each CH, the Power Good signal output pin and the I 2C communication interface, therefore it is easy to design the power supply sequence. It is possible to tune in the output voltage exactly using the I 2C communication and possible to correspond to the DVS/ASV system. Features Operating input voltage range:2.5 V to 5.5 V (Maximum rating: 7 V) Output voltage setting range, Maximum output current: DD1*:1.0 V to 1.3 V (20 mV/step), 1.4 A (DC) DD2*:1.2 V to 1.95 V (50 mV/step), 0.6 A (DC) LDO:2.8 V/2.85 V/3.0 V/3.3 V, 0.25 A (DC) Note: Each channel has selective preset voltage (Lineup for a total of 32 kinds) . Soft-start time setting range: 0.9 ms to 14.3 ms (approximately 0.9 ms/step) Switching frequency for the DC/DC block:3 MHz (fixed) Communication interface: I 2C (ON/OFF, Output voltage, Soft-start time setting) Built-in PFM/PWM auto switching mode Built-in function: Output setting resistor, Phase compensation circuit, Discharge resistor, Soft-start Each Channel Power Good output function (Open-drain) Protection function: Under voltage lockout protection circuit (UVLO), Over current protection circuit (OCP), Thermal shutdown protection circuit (TSD) Error signal output pin installed (Open-drain) Small package: QFN28 (4 mm × 4 mm × 0.8 mm, 0.4 mm pitch) *: DD1,DD2 : DC/DC converter block 1, 2 Applications Network equipment: Wifi-tuner, Surveillance camera Data-storage device: HDD, SSD, Picture recording equipment Image and voice output equipment: MFP, Printer, Scanner, Projector, Electrophone, STB Various terminals: POS, FA, HEMS etc. |
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