LM3559TLE/NOPB National Semiconductor, LM3559TLE/NOPB Datasheet - Page 35

• 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

INDICATOR BLINKING REGISTER
The Indicator Blinking Register contain the bits which control
the following:
1.
BLANK#
0000 = 0 (default)
0001 = 1
0010 = 2
0011 = 3
0100 = 4
0101 = 5
0110 = 6
0111 = 7
1000 = 8
1001 = 9
1010 = 10
1011 = 11
1100 = 12
1101 = 13
1110 = 14
1111 = 15
Bit 7 (M4)
Number of periods (t
Bit 6 (M3)
PERIOD
= t
Bit 5 (M2)
RAMP
FIGURE 18. Message Indicator Timing Diagram
× 2 + t
TABLE 17. Indicator Blinking Register
PULSE
Bit 4 (M1)
× 2)
35
Pulse Time (t
0000 = 0 (default)
0001 = 32 ms
0010 = 64 ms
0011 = 92 ms
0100 = 128 ms
0101 = 160 ms
0110 = 196 ms
0111 = 224 ms
1000 = 256 ms
1001 = 288 ms
1010 = 320 ms
1011 = 352 ms
1100 = 384 ms
1101 = 416 ms
1110 = 448 ms
1111 = 480 ms
Bit 3 (PW4)
2.
3.
Active Time (t
Blank Time (t
(see
PULSE
Figure
Bit 2 (PW3)
)
18)
BLANK
ACTIVE
= t
= t
ACTIVE
PERIOD
Bit 1 (PW2)
× BLANK#)
× PERIOD# )
Bit 0 (PW1)
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