MC13892VK Freescale Semiconductor, MC13892VK Datasheet - Page 116

• Manufacturer Part Number: MC13892VK
• Description: IC PMU I.MX51/37/35/27 139MAPBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC13892VK

• Applications: Battery Management, Display (LED Drivers), Handheld/Mobile Devices, Power Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: *
• Output Current: 65 mA
• Output Voltage: 1.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FUNCTIONAL DEVICE OPERATION
LIGHTING SYSTEM
are operated, then the LEDMD current will pulse at 30 mA and the LEDKP current at 60 mA. This provides an average of 15 mA
through the main display backlight LEDs and 30 mA through the keypad backlights LEDs.
SIGNALING LED DRIVERS
programmable current levels via LEDx[2:0] as well as programmable PWM duty cycle settings with LEDxDC[5:0]. By a
combination of both, the LED intensity can be adjusted. By driving LEDs of different colors, color mixing can be achieved.
or equivalent supply rail is therefore required. This is provided by the integrated boost converter SWBST. To make software
programming easier, an LEDSWBSTEN SPI bit has been provided in the Blue LED register to enable the boost converter. Note
116
13892
In the left most example in
The signaling LED drivers LEDR, LEDG, LEDB are independent current sink channels. Each driver channel features
Blue LEDs or bright green LEDs require more headroom than red and normal green signal LEDs. In the application, a 5.0 V
6 LED Main Display
LEDMD
Figure
External
Table 108. Signaling LED Drivers Duty Cycle Programming
Boost
Notes
Table 107. Signaling LED Drivers Current Programming
Notes
LEDxDC[5:0]
82.
LEDx[2:0]
000000
000001
…
010000
…
011111
1xxxxx
81.
000
001
010
011
100
101
110
111
9 LED Keypad
34: LEDMD is set at 15 mA (low range), LEDKP is set at 30 mA (high range). When both
LEDKP
“x” represents R, G and B
“x” represents for R, G and B
Figure 34. Serial LED Configurations
(81)
(82)
0
3
6
9
12
15
18
21
6 LED Main Display
3 LED Aux Display
LEDMD
0/32, Off
1/32
…
16/32
…
31/32
32/32, Continuously On
External
Boost
LEDx Current Level (mA)
LEDAD
Duty Cycle
6 LED Main Display
LEDMD
LEDAD
2 LED Reduced Keypad Option
12 LED Keypad Arrangement
External
Boost
Analog Integrated Circuit Device Data
LEDKP
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