A8530EESTR-T Allegro Microsystems Inc, A8530EESTR-T Datasheet - Page 5

• Manufacturer Part Number: A8530EESTR-T
• Description: IC LED DRVR WHITE BCKLGHT 16-QFN
• Manufacturer: Allegro Microsystems Inc
• Type: Backlight, White LED (Serial Interface)r

Specifications of A8530EESTR-T

• Topology: Switched Capacitor (Charge Pump)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-WFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA, 100mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -
• Other names: 620-1201-2

A8530
ELECTRICAL CHARACTERISTICS
T
Input Voltage Range
Undervoltage Lockout Threshold
UVLO Hysteresis Window
Quiescent Current
Soft-start Completion Time
ISET Bias Voltage
ISET Leakage in Shutdown
ISET Current Range
ISET to LEDx Current Ratio for LED1 through LED4
100% Output Current for LED5 and LED6
I
LED Current Matching for LED1 through LED4
LED Current Matching for LED5 and LED6
Regulation Voltage at LEDx (1.5 × and 2 × modes)
1x mode to 1.5x or 1.5x to 2x mode transition voltage at LEDx
Transition–Dropout Delta
Open Loop Output Resistance
LED Leakage in Shutdown
Oscillator Frequency
Output Overvoltage Protection (guaranteed by design)
ENF and ENM Input High Threshold
ENF and ENM Input Low Threshold
Input High Current
Input Low Current
ENM and ENF Pulse Low Time (figure 6)
ENM and ENF Pulse High Time (figure 6)
ENM and ENF Initial Pulse High Time (figure 6)
Shutdown or Dimming Reset Delay
Thermal Shutdown Threshold
a
b
c
d
e
than 80 mV).
LED
LED current matching is defined as (I
Specifications for the range T
I
Dropout voltage V
The open loop output resistance, R
A
LED
= –40°C to +85°C; typical values are at T
Accuracy for LED1 through LED4
accuracy is defined as ( I
dropout
Characteristics
d
is defined as LEDx-to-GND voltage at which I
A
SET
e
= –40°C to 85°C are guaranteed by design.
× 220 – I
OUT
b
LEDx
, for 1.5 × mode is measured when one of the LEDx pins is tied to ground or open (thus its voltage is always less
a
LEDAVG
c
VIN = ENM = 3.6 V, ENF = GND, C1 = C2 = 1 μF, CIN = COUT = 4.7 μF, RSET = 6.49 kΩ,
– I
LEDAVG
c
A
) / (I
= 25°C; unless otherwise noted
SET
) / I
LEDAVG
× 220).
.
E
I
V
I
V
V
LEDx
Symbol
LED56MAX
ILED14ERR
V
ΔI
ΔI
UVLOHYS
V
ISETBIAS
ISETLKG
V
t
V
R
LEDLKG
ΔV
t
T
V
SHDN
I
V
f
V
INIHI
UVLO
LED14
LED56
V
t
t
SET
REG
trans
I
t
I
OUT
osc
I
LO
TSD
ovp
ss
IH
HI
LEDx
Q
IL
IN
/I
IH
IL
dr
ISET
drops 10% below the value of I
V
Switching in 1.5 × or 2.0 × mode; T
ENF = ENM = GND; T
100% setting, I
Default 100% setting when ENF is enabled
ENF = GND, ENM = VIN
ENF = GND, ENM = VIN
ENF = VIN, ENM = GND, 100%
ENF = ENM = VIN
V
Measured as V
1× mode (V
1.5× mode (1.5 × V
2× mode (2 × V
ENF = ENM = GND, V
Open circuit at any LED that is programmed
to be in the ON state
Input high logic threshold
Input low logic threshold
V
V
First ENM or ENF pulse after shutdown
Falling edge of ENF and/or ENM
20
IN
LEDx
IH
IL
o
= GND
=VIN
C hysteresis
falling
and Flash/Torch White LED Driver
Ultracompact 6-Channel Backlight
falling
IN
Test Conditions
– V
SET
trans
IN
OUT
– V
= 60 μA
IN
– V
A
) / I
IN
OUT
– V
= 25°C
dropout
= 5.5 V
OUT
) / I
OUT
OUT
LEDx
) / I
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
OUT
when V
A
= 25°C
LEDx
= 300 mV.
Min.
2.25
2.7
1.4
0.5
0.5
40
92
50
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Typ. Max. Units
2.45
0.01
±1.6
±0.5
±0.5
0.01
220
100
250
150
165
0.1
2.0
0.6
0.5
2.5
60
40
–
6
–
1
5
1
–
–
–
–
–
–
–
–
2.60
140
108
250
5.5
6.0
0.4
–
2
1
–
–
–
1
1
1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
MHz
A/A
mV
mA
mA
mV
mV
mV
ms
ms
μA
μA
μA
μA
μA
μA
μs
μs
μs
o
%
%
%
V
V
V
Ω
Ω
Ω
V
V
V
C
4