Data sheet, White led step-up converter ap3019a, Electrical characteristics – Diodes AP3019A User Manual
Page 5
Data Sheet
WHITE LED STEP-UP CONVERTER AP3019A
May. 2010 Rev. 1.8 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
IN
=3V, V
CTRL
=3V, T
A
=25°C, unless otherwise specified.
Parameter Symbol
Conditions
Min
Typ
Max
Unit
Minimum Operating Voltage
V
IN
(min)
2.5
Maximum Operating Voltage
V
IN
(max)
16
V
Feedback Voltage (Note 2)
V
FB
I
OUT
=20mA, 4 LEDs,
T
A
=-40
o
C to 85
o
C
188 200 212 mV
FB Pin Bias Current
I
FB
35 100 nA
Quiescent Current
I
Q
V
FB
=V
IN
, no switching
1.5
2.5
3.2
mA
Shutdown Quiescent Current
I
SHDN
V
CTRL
=0V 2.0
4.0
6.0
µA
Switching Frequency
f
0.9
1.2
1.5
MHz
Maximum Duty Cycle
D
MAX
90
93
%
D=40%
550
Switch Current Limit (Note 3)
I
LIMIT
D=80%
550
mA
Switch V
CE
Saturation Voltage
V
CESAT
I
SW
=250mA
360
mV
Switch Leakage Current
V
SW
=5V
0.01
5
µA
High 1.8
CTRL Pin Voltage
V
CTRL
low
0.5
V
CTRL Pin Bias Current
I
CTRL
100
µA
OVP Voltage
V
OV
30
V
Schottky Forward Drop
V
DROP
I
D
=150mA
0.7
V
V
R
(reverse voltage)=23V
0.1
4
Schottky Leakage Current
V
R
(reverse voltage)=27V
150
µA
Soft Start Time
t
300
µS
SOT-23-6
60
Thermal Resistance
(Junction to Case)
θ
JC
TSOT-23-6
60
°C/W
Note 2: The bold type specifications of full temperature range are guaranteed by design (GBD).
Note 3: The switch current limit is related to duty cycle. Please refer to Figure 15 for detail.