AP3031 Datasheet, PDF (5/16 Pages) BCD Semiconductor Manufacturing Limited – WHITE LED STEP-UP CONVERTER

WHITE LED STEP-UP CONVERTER
Electrical Characteristics
(V_IN=5.0V, V_CTRL =5.0V, T_A=25^oC, unless otherwise specified.)
Parameter
Operating Voltage
Feedback Voltage (Note 2)
FB Pin Bias Current
Quiescent Current
Shutdown Quiescent Current
Switching Frequency
Maximum Duty Cycle
Switch Current Limit (Note 3)
Switch V_CE Saturation Voltage
Switch Leakage Current
CTRL Pin Voltage
CTRL Pin Bias Current
OVP Voltage
Soft-start Time
Standby Time
Thermal Shutdown
Thermal Resistance
(Junction to Case)
Symbol
V_IN
V_FB
I_FB
I_Q
I_SHDN
f
D_MAX
I_LIMIT
V_CESAT
V_CTRL
I_CTRL
V_OVP
t_SS
t_STB
T_OTSD
θ_JC
Conditions
I_OUT=20mA, 3 LEDs,
T_A=-40^oC to 85^oC
V_FB=V_IN, no switching
V_CTRL=0V
D=60%
I_SW=0.6A
V_SW=16V
Active high
Active low
Data Sheet
AP3031
Min Typ Max Unit
2.7
16
V
188
200
212
mV
35
100
nA
3.0
4.0
5.0
mA
20
50
80
µA
0.75
1
1.3 MHz
90
93
%
1.2
1.4
A
300
mV
0.01
5
µA
1.8
V
0.5
35
60
85
µA
17
V
250
µs
0.7
ms
155
o_C
60
o_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.
Apr. 2009 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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