Diodes AP3019A - 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.