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MAX1583ZETB+

P1-P3P4-P6P7-P9P10-P10
General Description
The MAX1583 white LED boost converter drives up to
five white LEDs with a constant current to provide cam-
era flash/strobe in cell phones, PDAs, DSCs, and other
hand-held devices. The MAX1583 includes a 24V boost
converter and a high-voltage LDO current regulator for
high efficiency and long battery life. Two logic inputs
control four modes of operation: shutdown mode (0.5µA
max), movie mode for high-efficiency continuous light-
ing (programmable up to 100mA), precharge mode for
charging a reservoir capacitor to 24V while the LEDs
are off (POK output indicates a full reservoir capacitor),
and strobe mode for firing the flash during an exposure
with a regulated current programmable up to 300mA.
The MAX1583X, MAX1583Y, and MAX1583Z offer high,
medium, and low current limits, respectively, to allow
tradeoff between reservoir capacitor size and peak
input current.
The MAX1583 is available in a 10-pin 3mm x 3mm
TDFN package (0.8mm max height).
Applications
Camera Flashes/Strobes
Cell Phones and Smart Phones
PDAs and Digital Still Cameras
Features
♦ Supports Up to Five LEDs for Strobe or Flash
♦ Four Operational Modes
Strobe: Up to 300mA
Precharge: With POK Indicator
Movie: Up to 100mA
Shutdown: 0.01µA (typ) Quiescent Current
♦ Input Current Limiting
1A (MAX1583X)
500mA (MAX1583Y)
250mA (MAX1583Z)
♦ Small External Components
♦ 2.6V to 5.5V Input Range
♦ 24V Output Overvoltage Protection
♦ 80% Efficient (P
LED
/ P
IN
) Movie Mode
♦ Thermal-Shutdown Protection
♦ 10-Pin 3mm x 3mm TDFN Package
MAX1583
White LED Camera-Flash
Boost Converter
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3135; Rev 1; 8/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-PACKAGE
MAX1583XETB-T
-40°C to +85°C
10 TDFN 3mm x 3mm
MAX1583XETB+T
-40°C to +85°C
10 TDFN 3mm x 3mm
8
9
10
OUT
LED
LX
3
2
1
MOV
IN
GND
7 EN2
4STB
6 EN1
5POK
TDFN
(3mm x 3mm)
MAX1583
TOP VIEW
+
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
Pin Configuration
PART
CURRENT LIMIT
TOP MARK
MAX1583XETB 1A ACJ
MAX1583YETB 500mA ACK
MAX1583ZETB 250mA ACL
Selector Guide
MAX1583
V
IN
2.6V TO 5.5V
LED
EN2
EN1
POK
GND
IN
LX
OUT
STB
MOV
I
LED
UP TO
300mA
EN1
0
0
1
1
SHUTDOWN
EN2
1
0
1
0
PRECHARGE
MOVIE
STROBE
Typical Operating Circuit
+Denotes lead-free package.
Ordering Information continued at end of data sheet.
MAX1583
White LED Camera-Flash
Boost Converter
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(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)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, EN1, EN2, POK to GND ......................................-0.3V to +6V
LX, OUT to GND .....................................................-0.3V to +30V
STB, MOV to GND .......................................-0.3V to (V
IN
+ 0.3V)
LED to GND..............................................-0.3V to (V
OUT
+ 0.3V)
I
LX
...................................................................................1.2A
RMS
Continuous Power Dissipation (T
A
= +70°C)
10-Pin 3mm x 3mm TDFN
(derate 24.4mW/°C above +70°C).............................1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS
TYP
MAX
UNITS
Supply Voltage 2.6 5.5 V
Undervoltage-Lockout Threshold V
IN
rising, hysteresis = 40mV (typ)
2.10 2.38 2.55
V
OUT Input Bias Current 41015µA
LX switching, LEDs off 2
Quiescent-Current Precharge Mode
LX not switching, LEDs off
0.32
mA
T
A
= +25°C
0.01
0.5
Quiescent-Current Shutdown Mode
EN1 = EN2 = GND
T
A
= +85°C 0.1
µA
Output Overvoltage-Lockout Threshold
V
OUT
rising, precharge or movie mode,
hysteresis = 500mV (typ)
22.5
24
25.5
V
LED Regulation Voltage Threshold V
LED
rising, movie mode 0.5 0.6 0.7 V
T
A
= +25°C
0.01
1
LED Input Leakage Current Precharge mode
T
A
= +85°C 0.1
µA
MOV, STB Regulation Voltage 600 mV
Current-Source Multiplier in Movie Mode I
LED
/ I
MOV
, I
MOV
up to 300µA 100 A/A
Current-Source Accuracy, Movie Mode R
MOV
= 2kΩ, V
LED
= 0.5V -7 ±1 +7 %
MOV Current-Source Dropout Voltage I
LED
= 25mA, R
MOV
= 2kΩ 0.1 V
Current-Source Multiplier in Strobe Mode
I
LED
/ I
STB
, I
STB
up to 300µA
1000
A/A
Current-Source Accuracy, Strobe Mode R
STB
= 2kΩ, V
LED
= 3.0V -10
±1.5 +10
%
STB Current-Source Dropout Voltage I
LED
= 250mA, R
STB
= 2kΩ 0.9 V
MAX1583X
800 1000 1200
MAX1583Y
400
500
600
Current Limit
MAX1583Z
200
250
300
mA
POK Low Voltage I
SINK
= 1mA
0.05
0.1 V
T
A
= +25°C
0.01
1
POK Leakage
T
A
= +85°C 0.1
µA
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 (%)
3.93.63.3
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)
5.04.54.03.53.0
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)
5.04.54.03.53.0
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
P1-P3P4-P6P7-P9P10-P10

MAX1583ZETB+

Mfr. #:
Buy MAX1583ZETB+
Manufacturer:
Maxim Integrated
Description:
IC LED DRIVER
Lifecycle:
New from this manufacturer.
Delivery:
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