LP3906SQ-JXXIEV National Semiconductor, LP3906SQ-JXXIEV Datasheet - Page 8

• Manufacturer Part Number: LP3906SQ-JXXIEV
• Description: BOARD EVALUATION LP3906SQ-JXXI
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP3906SQ-JXXIEV

• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 4, Non-Isolated
• Current - Output: 1.5A, 1.5A, 300mA, 300mA
• Regulator Topology: Buck
• Frequency - Switching: 2MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LP3906
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Output: -
• Voltage - Input: -
• Power - Output: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

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BUCK AND EN_T CONTROL
The Control / Status Bits Control menu controls the following
aspects of the chip:
1.
2.
Temp – Reflects the status of the regulators. If a buck or
LDO regulator falls out of regulation because of the
temperature, it will be shown in that panel.
System Delay Sequence – Allows for the user to
program a preset delay sequence for the startup of the
chip.
FIGURE 9. Interrupt Control Interface
8
3.
4.
Enable ext clock for bucks – If checked, the user must
input a 13 MHz clock to the SYNC pin of the IC. If
unchecked, the bucks will run internally with a 2MHz
clock.
Spread Spectrum, SS modulation – May help to
reduce noise from the buck switchers. Described in detail
on page 30 of the LP3906 datasheet.
20210809