Instruction Manual

MAX1583
White LED Camera-Flash
Boost Converter
4 _______________________________________________________________________________________
STROBE STANDBY-MODE INPUT CURRENT
vs. INPUT VOLTAGE (PRECHARGE DONE)
MAX1583 toc07
INPUT VOLTAGE (V)
INPUT CURRENT (µA)
5.04.54.03.53.0
500
1000
1500
2000
2500
0
2.5 5.5
MAX1583Z
MAX1583Y
MAX1583X
SWITCHING WAVEFORMS IN
MOVIE MODE
MAX1583 toc08
4
µ
s/div
V
OUT
AC-COUPLED
200mA/div
50mV/div
5V/div
V
LX
I
L
SWITCHING WAVEFORMS IN
STANDBY MODE
MAX1583 toc10
4ms/div
V
OUT
AC-COUPLED
500mA/div
500mV/div
10V/div
V
LX
I
L
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, C
RES
= 10µF, MAX1583Y, 4 LEDs in a 2 x 2 array, T
A
= +25°C, unless otherwise noted.)
MAXIMUM BOOST OUTPUT CURRENT
vs. INPUT VOLTAGE
(MAX1583Z)
MAX1583 toc04
V
IN
(V)
I
OUT
(mA)
5.04.54.03.53.0
50
100
150
200
250
300
350
400
450
0
2.5 5.5
A
C
B
D
A: 1 LED
B: 2 LEDs
C: 3 LEDs
D: 4 LEDs
STROBE-MODE LED CURRENT
vs. STB RESISTANCE
MAX1583 toc05
R
STB
(k
Ω
)
LED CURRENT (mA)
10864
50
100
150
200
250
300
350
0
212
MOVIE-MODE LED CURRENT
vs. MOV RESISTANCE
MAX1583 toc06
R
MOV
(k
Ω
)
LED CURRENT (mA)
10864
20
40
60
80
100
120
0
02 12
SWITCHING WAVEFORMS DURING
PRECHARGE MODE
MAX1583 toc09
1µs/div
V
OUT
AC-COUPLED
500mA/div
500mV/div
10V/div
V
LX
I
L