A6281EESTR-T Allegro Microsystems Inc, A6281EESTR-T Datasheet - Page 10

• Manufacturer Part Number: A6281EESTR-T
• Description: IC LED DRIVER PWM CONTROL 16-QFN
• Manufacturer: Allegro Microsystems Inc
• Type: PWM Controlr

Specifications of A6281EESTR-T

• Topology: Linear, PWM
• Constant Current: Yes
• Number Of Outputs: 3
• Internal Driver: Yes
• Type - Secondary: RGB
• Frequency: 5MHz
• Voltage - Supply: 4.75 V ~ 17 V
• Voltage - Output: 1 V ~ 3 V
• Mounting Type: Surface Mount
• Package / Case: 16-WFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 150mA
• Internal Switch(s): Yes
• Led Driver Application: Architectural Lighting, Displays
• No. Of Outputs: 3
• Output Current: 165mA
• Output Voltage: 3V
• Input Voltage: 4.75V To 17V
• Operating Supply Voltage (typ): 5/9/12/15V
• Number Of Segments: 3
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: QFN EP
• Pin Count: 16
• Mounting: Surface Mount
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 17V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 620-1218-2

A6281
System Logic
System Logic
Output Enable
Output Enable
Clock
Clock
Latch
Latch
Data
Tie LGND and PGND
to PAD externally
Data
Tie LGND and PGND
to PAD externally
8.5 V
10 V
Figure 8. Application driving 3 RGB LED strings, each at 75 mA maximum
Figure 9. Application driving high power LEDs at 450 mA total
10 μF
10 μF
+
+
–
–
2 Ω
0.5 W
3-Channel Constant Current LED Driver
Applications Drawings
Blue
LEDs
CI
OEI
SDI
CI
OEI
SDI
LI
LI
with Programmable PWM Control
Green
LEDs
PAD
PAD
A6281
A6281
Red
LEDs
1 μF
X5R
1 μF
10 V
OEO
OEO
SDO
SDO
CO
CO
LO
LO
10 kΩ
5 kΩ
V
1 to 3 V
On
V
1 to 3 V
On
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Maximum of
250 pixels
Maximum of
250 pixels
A6281
A6281
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