LM3559TLE/NOPB National Semiconductor, LM3559TLE/NOPB Datasheet - Page 24

• Manufacturer Part Number: LM3559TLE/NOPB
• Description: LM3559
• Manufacturer: National Semiconductor
• Series: -r

Specifications of LM3559TLE/NOPB

• Constant Current: Yes
• Constant Voltage: -
• Topology: High Side, PWM, Step-Up (Boost)
• Number Of Outputs: 2
• Internal Driver: Yes
• Type - Primary: Flash/Torch
• Type - Secondary: White LED
• Frequency: 1.8MHz ~ 2.2MHz
• Voltage - Supply: 2.5 V ~ 5.5 V
• Voltage - Output: -
• Mounting Type: Surface Mount
• Package / Case: 16-UFBGA
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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I
The device address for the LM3559 is 1010011 (0xA7 for read
and 0xA6 for write)). After the START condition, the I
ter sends the 7-bit address followed by an eighth read or write
bit (R/W). R/W = 0 indicates a WRITE and R/W = 1 indicates
TRANSFERRING DATA
Every byte on the SDA line must be eight bits long, with the
most significant bit (MSB) transferred first. Each byte of data
must be followed by an acknowledge bit (ACK). The acknowl-
edge related clock pulse (9th clock pulse) is generated by the
2
C-COMPATIBLE CHIP ADDRESS
FIGURE 16. I
FIGURE 17. Device Address
2
C mas-
2
C-Compatible Timing
24
a READ. The second byte following the device address se-
lects the register address to which the data will be written. The
third byte contains the data for the selected register.
master. The master releases SDA (HIGH) during the 9th clock
pulse (write mode). The LM3559 pulls down SDA during the
9th clock pulse, signifying an acknowledge. An acknowledge
is generated after each byte has been received.
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