LP3906SQ-PPXP/NOPB National Semiconductor, LP3906SQ-PPXP/NOPB Datasheet - Page 30

• Manufacturer Part Number: LP3906SQ-PPXP/NOPB
• Description: IC REG DC-DC/LINEAR DUAL 24-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP3906SQ-PPXP/NOPB

• Applications: Digital Cores
• Current - Supply: 60µA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-LLP
• For Use With: LP3906SQ-JXXIEV - BOARD EVALUATION LP3906SQ-JXXI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP3906SQ-PPXPTR

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BUCK FUNCTION REGISTER (BFCR) – 0x38
This register allows the Buck switcher clock frequency to be spread across a wider range, allowing for less Electro-magnetic
Interference (EMI). The spread spectrum modulation frequency refers to the rate at which the frequency ramps up and down,
centered at 2 MHz.
Name
Access
Data
Reset
Reserved
000010
D7-2
—
—
BK_SLOMOD
R/W
Buck Spread Spectrum Modulation
0 – 10 kHz triangular wave
1 – 2 kHz triangular wave
1
D1
30
BK_SSEN
R/W
Spread Spectrum Function Output
0 – Disabled
1 – Enabled
0
D0
20197825