A6281EESTR-T Allegro Microsystems Inc, A6281EESTR-T Datasheet - Page 4

• 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
OPERATING CHARACTERISTICS, valid at T
ELECTRICAL CHARACTERISTICS
Quiescent Supply Current
Operating Supply Current
Undervoltage Lockout
VREG Voltage Range
Output Current (any single output)
Output to Output Matching Error
Output Voltage Range
Load Regulation (I
Output Leakage Current
Logic Input Voltage
Logic Input Voltage Hysteresis
CI and SDI Pins Logic Input Current
Input Resistance
Logic Output Voltage
Output Dot Correction Error
PWM Oscillator
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
SWITCHING CHARACTERISTICS
Clock Hold Time
Data Setup Time
Data Hold Time
Latch Setup Time
Latch Hold Time
Output Enable Set Up Time
Output Enable Falling to Outputs Turning On
Propagation Delay Time
Clock to Output Propagation Delay Time
Logic Output Fall Time
Logic Output Rise Time
Output Fall Time (Turn Off)
Output Rise Time (Turn On)
Clock Falling Edge to Serial Data Out
Propagation Delay Time
Logic In to Output Propagation Delay
Clock Out Pulse Duration
Maximum Clock In Frequency
1
2
3
Load Supply Voltage
If V
Err = [I
In daisy-chained applications, t
IN
is a 4.75 to 5.5 V supply, connect VIN to VREG externally
O
(min or max) – I
Characteristic
3
%Diff
1
/ ∆V
O
DS
(av)] / I
)
SU(LI)
2
O
(av), where I
must be increased for the quantity of pixels in the chain (see Application Information section).
Symbol
V
O
V
t
t
t
t
t
T
t
t
SU(OE)
t
P(SDO)
V
H(CLK)
P(OUT)
w(CLK)
(av) = average of 3 output current values.
DS(min)
f
T
t
t
I
I
V
SU(D)
t
SU(LI)
P(OE)
IN(UV)
V
PWM
P(IO)
I
I
V
OUT
Err
V
H(D)
H(LI)
t
DSX
V
JTSD
t
I
f
REG
R
Jhys
DD
DD
BR
BF
IN
OH
t
t
CI
OL
IH
IN
IL
f
r
I
A
f
f
V
V
I
R
R
Output to output variation—all outputs on, R
R
V
All digital inputs
V
OEI pin, pull-up
LI pin, pull-down
V
R
Temperature increasing
External clock selected, V
C
C
C
C
C
C
LI→LO, CI→CO, OEI→OEO
3-Channel Constant Current LED Driver
CLKIN
CLKIN
OUT
IN
IN
OH
IN
IN
= 25°C, V
EXT
EXT
EXT
EXT
OB
OB
OUT
OUT
OUT
OUT
rising
falling
= 0 to 5 V
≥ 5.0 V, I
=15 mA, V
= 17 V
= 50 pF, 4.5 to 0.5 V
= 50 pF, 0.5 to 4.5 V
= 5 kΩ, scalar = 100%
= 15 kΩ, scalar = 100%
= 5 kΩ, V
= 5 kΩ; LSB
= 10 pF, 90% to 10% of I
= 10 pF, 90% to 10% of I
= 10 pF, 10% to 90% of I
= 10 pF, 10% to 90% of I
= 0.0 Hz
= 5 MHz
O
IN
= ±2 mA
DS
IN
with Programmable PWM Control
= 4.75 to 17.0 V, unless otherwise noted
= 17 V
= 1 to 3 V
Test Conditions
DS
= 1.0 V, I
OUT
OUT
OUT
OUT
= 10 mA
= 150 mA
= 10 mA
= 150 mA
O
= 150 mA
EXT
= 5 kΩ
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Min.
4.75
135
–20
150
100
3.0
4.6
1.0
2.0
–7
3.8
20
20
20
20
20
40
70
45
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
150.0
Typ.
150
300
200
800
165
200
200
100
100
51
±1
±1
15
50
30
10
10
50
50
50
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
15.0
165
600
400
100
130
5.0
4.5
5.4
3.0
1.0
0.8
0.4
17
±3
20
60
57
–
7
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
6
Units
MHz
%/V
kHz
mA
mA
mA
mV
mA
μA
μA
kΩ
kΩ
°C
°C
bit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
V
V
V
V
V
V
V
V
V
4