A6281EESTR-T Allegro Microsystems Inc, A6281EESTR-T Datasheet - Page 5

• 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
(Output Enable Output)
Brightness Data = 1022
(Output Enable Input)
Brightness Data= 1
Brightness Data= 0
Internal Oscillator or
CI (External Clock)
(Serial Data Out)
(Serial Data In)
(External Clock)
PWM Counter
(Latch Out)
(Latch In)
SDO
OEO
I
I
I
SDI
OUT0
OUT1
OUT2
OEI
t
SU (D )
LO
CI
LI
t
t
P(OE)
D31
P(IO)
0
D30
0
t
t
1
w(C L K)
H( D)
D29 D28 D27 D26 D25 D24 D23
2
Figure 3. PWM Counter and Output Timing
T
1
3
1
Outputs Off
3-Channel Constant Current LED Driver
Outputs On
4
Figure 2. Serial Port Timing
T
2
2
t
P(OUT)
5
Don’t Care
6
t
P(OUT)
with Programmable PWM Control
7
t
w (OE)
8
1023
T
0
N
t
P(OUT)
D16 D15
15 16
1
2
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
t
SU (L I )
t
P(IO)
D0
31
D31
X
t
t
P(SD O)
H (L I )
0
5