LM3530UME-25A/NOPB National Semiconductor, LM3530UME-25A/NOPB Datasheet - Page 32

• Manufacturer Part Number: LM3530UME-25A/NOPB
• Description: IC LED DRVR PRGRAM I2C 10LED SMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3530UME-25A/NOPB

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 500kHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 12-XFBGA
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: Adjustable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LM3530UME-25A/NOPBTR

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ZONE BOUNDARY REGISTER
The Zone Boundary Registers are programmed with the am-
bient light sensing zone boundaries. The default values are
set at 20% (200mV), 40% (400mV), 60% (600mV), and 80%
FIGURE 24. Zone Boundary Registers
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(800mV) of the full-scale ALS input voltage range (1V). The
necessary conditions for proper ALS operation are that the
data in ZB0 < data in ZB1 < data in ZB2 < data in ZB3.
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