LM3528TMX National Semiconductor, LM3528TMX Datasheet - Page 25

• Manufacturer Part Number: LM3528TMX
• Description: LM3528 High Efficiency, Multi Display LED Driver with 128 Exponential Dimming Steps and Integrated OLED Power Supply in a 1.2mm - 1.6mm uSMD Package; Package: MICRO SMD; No of Pins: 12; Qty per Container: 3000; Container: Reel
• Manufacturer: National Semiconductor

SHUTDOWN AND OUTPUT ISOLATION
The LM3528 provides a true shutdown for either MAIN or
SUB/FB when configured as a White LED bias supply. Write
a 0 to ENM (bit 1) of the General Purpose register to turn off
the MAIN current sink and force MAIN high impedance. Write
a 0 to ENS (bit 2) of the General Purpose register to turn off
FIGURE 16. Pattern Generation Write Sequence
FIGURE 17. Pattern Generation Output
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the SUB/FB current sink and force SUB/FB high impedance.
Writing a 1 to ENM or ENS turns on the MAIN and SUB/FB
current sinks respectively. When in shutdown the leakage
current into MAIN or SUB/FB is typically 1.8µA. See Typical
Performance Plots for start-up responses of the LM3528 us-
ing the ENM and ENS bits in White LED and OLED modes.
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