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19-3135; Rev 1; 8/05
ATION
AILABL
KIT
EVALU E
AV
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
White LED Camera-Flash
Boost Converter
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
Ordering Information
Camera Flashes/Strobes
Cell Phones and Smart Phones
PDAs and Digital Still Cameras
PART
MAX1583XETB-T
MAX1583XETB+T
TEMP RANGE
-40 ° C to +85 ° C
-40 ° C to +85 ° C
PIN-PACKAGE
10 TDFN 3mm x 3mm
10 TDFN 3mm x 3mm
+ Denotes lead-free package.
Ordering Information continued at end of data sheet.
Typical Operating Circuit
Selector Guide
PART
CURRENT LIMIT
TOP MARK
V IN
2.6V TO 5.5V
MAX1583XETB
MAX1583YETB
1A
500mA
ACJ
ACK
IN
LX
MAX1583ZETB
250mA
ACL
GND
MAX1583
Pin Configuration
POK
EN1
OUT
I LED UP TO
300mA
TOP VIEW
GND
+
1
10
LX
EN2
IN
2
9
LED
STB
LED
MOV
3
MAX1583
8
OUT
MOV
EN1
EN2
STB
4
7
EN2
0
0
SHUTDOWN
0
1
PRECHARGE
POK
5
6
EN1
1
0
MOVIE
1
1
STROBE
TDFN
(3mm x 3mm)
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
________________________________________________________________ Maxim Integrated Products
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.
1
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