NCP5612MUTBG ON Semiconductor, NCP5612MUTBG Datasheet - Page 8

• Manufacturer Part Number: NCP5612MUTBG
• Description: IC LED DRVR WHITE BCKLGT 12-LLGA
• Manufacturer: ON Semiconductor
• Type: Backlight, White LED (Serial Interface)r

Specifications of NCP5612MUTBG

• Topology: Switched Capacitor (Charge Pump)
• Number Of Outputs: 2
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 4.8 V ~ 5.7 V
• Mounting Type: Surface Mount
• Package / Case: 12-LLGA
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 60mA
• Internal Switch(s): Yes
• Efficiency: 90%
• Number Of Segments: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Power Dissipation: 200 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCP5612MUTBG; NCP5612MUTBGOSTR

•
•
•
•
Start Bit
Negative going edge
Clear counter
Example #1: CNTL
LED1= 0 mA
LED2 = ICON
Example #2: CNTL
LED1= 6 mA
LED2 = 6 mA
Example #3: CNTL
LED1= 30 mA
LED2 = 30 mA
Note: timings are not scaled.
The first four positive going pulses are used to control
the ICON (LED2):
The fifth positive pulse will clear the ICON and
activate the normal operation of LED1 and LED2
The pulses from the fifth to the twentieth will increase
the LED current according to a pseudo logarithmic
scale (see Figure 9).
Any pulses beyond the twentieth will not make change
to the LED current if the delay between the pulses is
shorter than 75 ms.
1. Pulse #1 ³ ICON = 100 mA
2. Pulse #2 ³ ICON = 150 mA
3. Pulse #3 ³ ICON = 250 mA
4. Pulse #4 ³ ICON = 450 mA
T
Pulse count
EH
max 75 ms when clocked
Pulse count
Pulse count
ICON = 250 mA
1
ICON = disabled
ICON = disabled
1
1
2
2
2
3
3
3
Figure 8. Basic NCP5612 Programming Sequence
4
4
Shut down mode
LED1=LED0= 0 mA
T
T
dst
EH
5
5
LED1=LED2 = 6 mA
6
6
http://onsemi.com
7
7
NCP5612
T
EL
8
8
8
9
9
•
CNTL pin must stay High to store the new data and
maintain the LED active.
registers at the end of the built−in 200 ms typical delay: no
action will take place during the end of the last positive
going pulse and the end of the T
prevent the system for broken transmission.
transmission, the High level shall be 75 ms maximum
during a given data frame. Consequently, the pulse
frequency is bounded by a 13 kHz minimum and a 400 kHz
maximum.
10
10
Once the expected LED current value is reached, the
The contain of the counter is stored into the internal LED
On the other hand, in order to avoid corrupted data
The system returns to zero if a pulse, delayed by
200 ms – T
cycle restart from the beginning.
11 12 13 14 15 16 17 18 19 20
T
dst
LED1=LED2 = 30 mA
LED1=LED2 = 0 mA
dst
– , follows the twentieth one and the
T
dst
dst
delay. Such a protocol