Data sheet, Electrical characteristics (continued) – Diodes AP3041 User Manual
Page 7

Data Sheet
Boost Controller for WLED Driver in Medium-sized LCD Panel AP3041
Oct. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
7
Electrical Characteristics (Continued)
V
CC
=12V, V
EN
=3.3V, T
A
=25ºC, unless otherwise specified.
Parameter Symbol
Conditions
Min
Typ
Max
Unit
Current Limit Threshold Voltage
V
CS
0.48 0.5 0.52 V
RT Voltage
V
RT
1.20 1.25 1.30 V
Error Amplifier Voltage Gain
G
V
680 V
/V
Error Amplifier Transconductance
G
S
500
μA /V
EN Pin Threshold Voltage
V
EH
2.5
V
V
EL
0.5
PWM Pin Threshold Voltage
V
IH
2.5
V
V
IL
0.5
OV Threshold
V
OV
2.25
V
OV Hysteresis Current Source
I
OV-HYS
10
μA
LED- Short to GND Detection Level
V
FB_LOW
0.3
V
LED+ Short to LED-Detection Level
V
FB_HIGH
1.25
V
LED+ Short to GND Detection Level
V
OV_LOW
0.3
V
Diode Short Detection Level
V
CS_HIGH
1.75
V
CT Current Source
I
CT
5
μA
CT Threshold Voltage
V
CT
2.6 V
Maximum Duty Cycle
D
MAX
f=200kHz
80 90
%
Soft-start Current Source
I
SS
16 22 28
μA
OUT Pin Rising Time
t
RISE
C
OUT
=1nF
20
ns
OUT Pin Falling Time
t
FALL
C
OUT
=1nF
20
OUT High Voltage Level (V
CC
-V
OUT
) V
OUT-H
I
OUT
=50mA
0.25
0.75
V
OUT Low Voltage Level (V
OUT
) V
OUT-L
I
OUT
=50mA
0.25
0.75
V
FAULT Pin Rising Time
t
RISE
C
FAULT
=1nF
100
ns
FAULT Pin Falling Time
t
FALL
C
FAULT
=1nF
100
FAULT High Voltage Level
(V
CC
-V
FAULT
)
V
FAULT_H
I
FAULT
=10mA
0.25
0.75
V
FAULT Low Voltage Level
V
FAULT_L
I
FAULT
=10mA
0.25
0.75
V
FAULT Minimum Pulse Width
t
D
Oscillator
Frequency=200kHz
20 μs
FLAG High Voltage Level
V
FLAG-H
I
FLAG
=500
μA
2 V
FLAG Low Voltage Level
V
FLAG-L
I
FLAG
=500
μA
0.25
0.75 V
Thermal Shutdown Temperature
T
OTSD
160
ºC
Thermal Shutdown Hysteresis
T
HYS
20
ºC