A8514KLPTR-T Allegro Microsystems Inc, A8514KLPTR-T Datasheet - Page 6

• Manufacturer Part Number: A8514KLPTR-T
• Description: IC LED DVR WHT 4X80MA 16-ETSSOP
• Manufacturer: Allegro Microsystems Inc

Specifications of A8514KLPTR-T

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

A8514
ELECTRICAL CHARACTERISTICS
and characterization over the full operating temperature range with T
Continued on the next page…
Oscillator Frequency
Oscillator Frequency
FSET/SYNC Pin Voltage
FSET Frequency Range
Synchronization
Synchronized PWM Frequency
Synchronization Input
Minimum Off-Time
Synchronization Input
Minimum On-Time
LED Current Sinks
LEDx Accuracy
LEDx Matching
LEDx Regulation Voltage
I
ISET Pin Voltage
Allowable ISET Current
V
Soft Start LEDx Current
Maximum PWM Dimming
Until Off-Time
Minimum PWM On-Time
PWM High to LED-On Delay
PWM Low to LED-Off Delay
SET
LED
to I
Short Detect
LEDx
Characteristics
Current Gain
2
t
t
PWSYNCOFF
PWSYNCON
t
t
Symbol
f
dPWM(on)
dPWM(off)
ΔLEDx
V
SWSYNC
Err
I
t
V
t
A
V
f
LEDSS
V
PWMH
PWML
I
LEDSC
FSET
f
FSET
SET
1,2
ISET
ISET
SW
LED
LED
(continued) Valid at V
R
R
R
R
I
I
V
I
While LED sinks are in regulation, sensed
from LEDx pin to ground
Current through each enabled LEDx pin
during soft start
Measured while PWM/EN = low, during
dimming control and internal references
are powered-on (exceeding t
shutdown)
First cycle when powering-up device
Time between PWM enable and LED current
reaching 90% of maximum
Time between PWM enable going low and
LED current reaching 10% of maximum
SET
SET
SET
LED1
FSET
FSET
FSET
FSET
Wide Input Voltage Range, High Efficiency
= 120 μA
= 120 μA
= 120 μA
=V
= 10 kΩ
= 20 kΩ
= 35.6 kΩ
= 10 kΩ
LED2
=V
Test Conditions
LED3
IN
=V
= 16 V, T
A
LED4
= T
, I
J
PWML
SET
= –40°C to 125°C; unless otherwise noted
A
= 120 μA
= 25°C,
results in
Fault Tolerant LED Driver
indicates specifications guaranteed by design
0.988
Min.
520
580
580
150
150
600
633
1.8
0.9
4.6
20
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
−
−
−
−
−
−
−
−
32,750
1.003
Typ.
1.00
0.75
580
700
653
360
5.1
2.0
0.5
2
1
−
−
−
−
−
−
−
1.018
2500
2300
Max.
640
800
672
120
500
2.2
1.1
5.6
−
−
−
−
3
3
–
2
1
cycles
MHz
MHz
Unit
kHz
kHz
kHz
A/A
mV
mA
f
μA
μs
μs
ns
ns
SW
ns
%
%
V
V
V
6