A8515GLPTR-T Allegro Microsystems Inc, A8515GLPTR-T Datasheet - Page 5

• Manufacturer Part Number: A8515GLPTR-T
• Description: Backlight Driver For Medium Size LCDs
• Manufacturer: Allegro Microsystems Inc

Specifications of A8515GLPTR-T

• Constant Current: *
• Constant Voltage: *
• Internal Driver: *
• Type - Primary: *
• Type - Secondary: *
• Mounting Type: Surface Mount
• Topology: *
• Number Of Outputs: *
• Frequency: *
• Voltage - Supply: *
• Voltage - Output: *
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Operating Temperature: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A8515
ELECTRICAL CHARACTERISTICS
characterization over the full operating temperature range with T
Continued on the next page…
Input Voltage Specifications
Operating Input Voltage Range
UVLO Start Threshold
UVLO Stop Threshold
UVLO Hysteresis
Input Currents
Input Quiescent Current
Input Sleep Supply Current
Input Logic Levels (EN/PWM/APWM)
Input Logic Level-Low
Input Logic Level-High
EN/PWM Pins Open Drain
Pull-down Resistor
APWM Pull-down Resistor
APWM
APWM Frequency
Error Amplifier
Open Loop Voltage Gain
Transconductance
Source Current
Sink Current
COMP Pin Pull-down Resistance
Overvoltage Protection
Overvoltage Threshold
OVP Sense Current
OVP Leakage Current
Secondary Overvoltage Protection
Boost Switch
Switch On-Resistance
Switch Leakage Current
Switch Current Limit
Secondary Switch Current Limit
Soft Start Boost Current Limit
Minimum Switch On-Time
Minimum Switch Off-Time
Characteristics
3
2
t
t
V
I
SWOFFTIME
V
V
SWONTIME
Symbol
V
I
SWSS(LIM)
I
I
I
V
I
I
SW(LIM2)
R
EA(SINK)
R
I
UVLOHYS
EA(SRC)
OVPLKG
QSLEEP
SW(LIM)
UVLOrise
f
OVP(sec)
UVLOfall
I
SWLKG
APWM
A
OVP(th)
R
R
OVPH
APWM
V
V
COMP
V
gm
1
I
VOL
SW
Q
EN
IN
IH
IL
Valid at V
V
V
EN = V
V
5 V < V
5 V < V
EN = V
APWM, V
ΔI
V
V
¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ = 1
OVP connected to V
R
I
V
Higher than I
device latches when detected
Initial soft start current for boost switch
SW
IN
IN
IN
COMP
COMP
SW
OVP
COMP
Wide Input Voltage Range, High Efficiency
rising
falling
= 16 V, V
= 0.750 A, V
IN
= 16 V, PWM = V
= 40.2 kΩ, V
= 16 V, T
IH
IH
= 1.5 V
= 1.5 V
IN
IN
= ±10 μA
; SW = 2 MHz, no load
< 40 V
< 40 V
IH
= 1.5 V, V
EN
SW(LIM)
Test Conditions
/ PWM = SYNC = 0 V
IN
A
A
IN
= 25°C,
= 16 V
= T
(max) for all conditions,
OUT
= 16 V, EN = V
IL
IL
J
= 0.4 V
= –40°C to 105°C; unless otherwise noted
indicates specifications guaranteed by design and
IL
Fault Tolerant LED Driver
Min.
190
1.5
7.6
3.0
20
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
5
−
−
–
−
−
–
–
–
−
−
−
−
−
−
−
−
−
−
−
−
−
Typ.
–360
2000
55.5
400
100
100
990
360
200
300
700
3.5
0.1
0.1
3.4
15
47
85
85
–
–
–
–
–
−
8
7
2
Max.
1000
4.35
3.90
10.0
400
210
8.4
3.8
40
–
−
–
–
−
−
−
−
−
−
−
−
−
−
−
–
1
1
μA/V
Unit
kHz
mΩ
mV
mA
mV
mA
kΩ
kΩ
dB
μA
μA
μA
μA
μA
μA
ns
ns
Ω
V
V
V
V
V
V
A
A
5