A6285EET-T Allegro Microsystems Inc, A6285EET-T Datasheet - Page 9

• Manufacturer Part Number: A6285EET-T
• Description: IC LED DRIVER LINEAR 32-QFN
• Manufacturer: Allegro Microsystems Inc
• Type: Linear (Non-Switching)r

Specifications of A6285EET-T

• Operating Temperature: -40°C ~ 85°C
• Topology: PWM
• Constant Current: Yes
• Number Of Outputs: 16
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: Color, White LED
• Frequency: 30MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Voltage - Output: 12V
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Current - Output / Channel: 80mA
• Internal Switch(s): Yes
• Led Driver Application: Display
• No. Of Outputs: 16
• Output Current: 80mA
• Output Voltage: 12V
• Input Voltage: 3V To 5.5V
• Dimming Control Type: PWM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1224-5

A6285
Delay Between Outputs
circuits between outputs. The fixed delay time is 20 ns (typical).
OUT0 has no delay, OUT1 has a 20 ns delay, OUT2 has a 40 ns
delay, and so forth. This delay prevents large in-rush currents
that create ground bounce, which reduces power supply bypass
capacitor requirements when the outputs turn on. The delays
work during switch on and switch off of each output channel.
includes a flexible serial data interface, which can be connected
to a microcontroller or a digital signal processor. Only 3 pins are
Serial Interface Data Transfer Rate
The A6285 has graduated delay
Figure 9. Output on-off and Dot Correction timing
16-Channel Constant-Current Latched LED Driver
The A6285
with Open LED Detection and Dot Correction
required to input data into the device. The rising edge of a CLK
signal shifts the data from SDI pin to the input shift register. After
all data is clocked in, a rising edge of LE latches the serial data
to the On/Off register. All data is clocked in with the MSB first,
while LE is set low.
Multiple A6285 devices can be cascaded by connecting the SDO-
pin of one device with the SDI pin of the following device. The
SDO pin can also be connected to the microcontroller or micro-
processor in order to transmit LOD information from the A6285.
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
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