Max1583 white led camera-flash boost converter, Typical operating characteristics, Electrical characteristics (continued) – Rainbow Electronics MAX1583 User Manual
Page 3
MAX1583
White LED Camera-Flash
Boost Converter
_______________________________________________________________________________________
3
Note 1: All units are 100% production tested at T
A
= +25
°C. Limits over the operating temperature range are guaranteed by design.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
EN1
= 3.0V, V
EN2
= 0V, V
OUT
= 20V, C
OUT
= 10µF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25
°C. Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
EN1 and EN2 Input High Threshold
V
IN
= 2.6V to 5.5V
1.6
V
EN1 and EN2 Input Low Threshold
V
IN
= 2.6V to 5.5V
0.6
V
T
A
= +25
°C
0.01
1
EN1 and EN2 Input Leakage
EN_ = IN
T
A
= +85
°C
0.1
µA
LX On-Resistance
I
LX
= 200mA
1.3
2.25
Ω
T
A
= +25
°C
0.01
5
LX Leakage
V
LX
= 28V
T
A
= +85
°C
0.1
µA
T
A
= 0
°C to +85°C
0.8
1.0
1.2
Operating Frequency
T
A
= -40
°C to +85°C
0.75
1.25
MHz
Maximum Duty Cycle
Switching
90
94
%
Minimum Duty Cycle
Pulse skipping
0
%
Typical Operating Characteristics
(V
IN
= 3.3V, C
RES
= 10µF, MAX1583Y, 4 LEDs in a 2 x 2 array, T
A
= +25
°C, unless otherwise noted.)
EFFICIENCY vs. INPUT VOLTAGE
(MOVIE MODE)
MAX1583 toc01
INPUT VOLTAGE (V)
EFFICIENCY (%)
3.9
3.6
3.3
10
20
30
40
50
60
70
80
90
0
3.0
4.2
A: MAX1583X
B: MAX1583Y
C: MAX1583Z
I
LOAD
= 30mA
C
B
A
MAXIMUM BOOST OUTPUT CURRENT
vs. INPUT VOLTAGE (MAX1583X)
MAX1583 toc02
V
IN
(V)
I
OUT
(mA)
5.0
4.5
4.0
3.5
3.0
100
200
300
400
500
600
700
0
2.5
5.5
A
B
C
D
A: 1 LED
B: 2 LEDs
C: 3 LEDs
D: 4 LEDs
MAXIMUM BOOST OUTPUT CURRENT
vs. INPUT VOLTAGE
(MAX1583Y)
MAX1583 toc03
V
IN
(V)
I
OUT
(mA)
5.0
4.5
4.0
3.5
3.0
100
200
300
400
500
600
0
2.5
5.5
A
B
C
D
A: 1 LED
B: 2 LEDs
C: 3 LEDs
D: 4 LEDs