MAX1583ZETB+T Maxim Integrated Products, MAX1583ZETB+T Datasheet - Page 6

• Manufacturer Part Number: MAX1583ZETB+T
• Description: IC LED DRIVR PHOTO FLASH 10-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Photo Flash LEDr

Specifications of MAX1583ZETB+T

• Constant Current: Yes
• Topology: Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Flash/Torch
• Type - Secondary: White LED
• Frequency: 750kHz ~ 1.25MHz
• Voltage - Supply: 2.6 V ~ 5.5 V
• Voltage - Output: 24V
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 250mA
• Internal Switch(s): Yes
• Efficiency: 80%
• Number Of Segments: 5
• Operating Supply Voltage: 2.6 V to 5.5 V
• Maximum Power Dissipation: 1951 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

White LED Camera-Flash
Boost Converter
6
PIN
10
—
_______________________________________________________________________________________
1
2
3
4
5
6
7
8
9
NAME
MOV
GND
MOV
EN1
EN2
STB
POK
OUT
STB
EN1
EN2
LED
EP
LX
IN
IN
Ground. Connect to exposed paddle.
Input Voltage Supply. Input voltage range is 2.6V to 5.5V. Bypass IN to GND with a 4.7µF ceramic capacitor.
Movie Current-Set Input. Connect a resistor from MOV to GND to set the LED current for movie-mode
operation. R
Strobe Current-Set Input. Connect a resistor from STB to GND to set the LED current for strobe-mode
operation. R
P ow er - O K O utp ut. P ul l ed to GN D d ur i ng p r echar g e m od e. P OK g oes hi g h i m p ed ance once V
Enable 1. EN1 and EN2 are digital inputs that determine the operational mode of the MAX1583. See Table 1.
Enable 2. EN1 and EN2 are digital inputs that determine the operational mode of the MAX1583. See Table 1.
Output-Voltage Sense Input. The boost-converter circuit in the MAX1583 is disabled once V
than 24V. When V
LED Return Input. Connect to the cathode of the series LEDs. Regulates to 0.6V in movie mode. LED is high
impedance during shutdown and precharge mode.
Inductor Connection. Drain of the internal power MOSFET. Connect to the switched side of the inductor. LX is
high impedance during shutdown.
Exposed Paddle. Connect to the circuit ground plane.
DECODE
ENABLE
MAX1583
MOV
STB
CURRENT REGULATOR
REFERENCE
COMPARATOR
MOVIE-MODE
= 600 / I
= 60 / I
FEEDBACK
OUT
GND
falls below 23.5V, the converter is enabled.
LED
LED
(where R
(where R
MOV
STB
THERMAL
> 2kΩ).
> 600kΩ).
LIMIT
BOOST-CONVERTER
CONTROL
FUNCTION
CURRENT-LIMIT
COMPARATOR
COMPARATOR
POK CIRCUITRY
POK
N
Functional Diagram
CURRENT-LIMIT
THRESHOLD
N
Pin Description
N
OU T
OUT
LX
POK
OUT
LED
r eaches 24V .
is greater