MAX8607ETD+T Maxim Integrated Products, MAX8607ETD+T Datasheet

IC LED DRIVR PHOTO FLASH 14-TDFN

MAX8607ETD+T

Manufacturer Part Number
MAX8607ETD+T
Description
IC LED DRIVR PHOTO FLASH 14-TDFN
Manufacturer
Maxim Integrated Products
Type
Photo Flash LEDr
Datasheet
1.MAX8607ETDT.pdf (10 pages)

Specifications of MAX8607ETD+T

Topology
Linear (LDO), PWM, Step-Up (Boost)
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Flash/Torch
Frequency
800kHz ~ 1.2MHz
Voltage - Supply
2.7 V ~ 5.5 V
Voltage - Output
5.5V
Mounting Type
Surface Mount
Package / Case
14-TDFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
360mA, 1.5A
Internal Switch(s)
Yes
Efficiency
84%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX8607 white LED boost converter is optimized
for camera flash/strobe applications using high-current
white LEDs. The MAX8607 integrates a 1MHz PWM
boost converter, 1.5A low-dropout (LDO) current regu-
lator, and logic control circuitry for a space-saving LED
flash design. Two logic inputs control four modes of
operation: shutdown mode reduces the quiescent cur-
rent to 0.1µA (typ), movie mode supplies up to 360mA
of LED current for continuous lighting, flash mode sup-
plies up to 1.5A of LED current for short-duration light-
ing during an exposure, and disco mode supplies +5V
(at up to 1A) to external circuits while driving the LED
with a fixed 80mA current.
The internal 1MHz boost converter features an adaptive
control scheme with an internal switching MOSFET and
synchronous rectifier to improve efficiency and mini-
mize external component count. The MAX8607 is avail-
able in a 14-pin, 3mm x 3mm TDFN package (0.8mm
max height).
19-3783; Rev 1; 2/07
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.
TOP VIEW
Camera Flashes/Strobes
Cell Phones/Smartphones
PDAs and Digital Cameras
14
1
________________________________________________________________ Maxim Integrated Products
+
13
2
3mm x 3mm
12
General Description
3
MAX8607
TDFN
11
4
1MHz PWM Boost Converter for 1.5A
Pin Configuration
10
5
9
6
Applications
8
7
White LED Camera Flash
♦ Supports Lumileds and Other High-Power
♦ Independently Set Flash/Movie Currents
♦ Disco Mode with Fixed 5V (Up to 1A) and 80mA
♦ 84% Efficiency (P
♦ T
♦ Output Overvoltage Protection (OVP)
♦ Soft-Start Eliminates Inrush Current
♦ 1MHz PWM Operation at All Loads
♦ Small External Components
♦ 2.7V to 5.5V Input Voltage Range
♦ 0.1µA Shutdown Mode
♦ 14-Pin, 3mm x 3mm TDFN Package
+Indicates lead-free package.
*The MAX8607ETD is characterized over the -40°C to +85°C
temperature range.
2.7V TO 5.5V
10µF
MAX8607ETD+
White LEDs
LED Current
SELECT
INPUT
INPUTS
MODE-
A
Flash-Mode Current Up to 1.5A
Movie-Mode Current Up to 360mA
PART*
Derating Function for LED Thermal Protection
2.2µH
Typical Operating Circuit
LX
PGND
COMP
EN1
EN2
FLSH
14 TDFN 3mm x 3mm
(T1433-1)
LED
PIN-PACKAGE
MAX8607
Ordering Information
/ P
MOV
OUTS
LGND
GND
OUT
BATT
LED
) at 1.1A
10µF
OUTPUT
Features
UP TO 1.5A FLASH
UP TO 360mA MOVIE
TOP MARK
ABA
1

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MAX8607ETD+T Summary of contents

Page 1

... TDFN 3mm x 3mm ________________________________________________________________ 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. White LED Camera Flash ♦ Supports Lumileds and Other High-Power White LEDs ♦ Independently Set Flash/Movie Currents Flash-Mode Current Up to 1.5A Movie-Mode Current Up to 360mA ♦ ...

Page 2

PWM Boost Converter for 1.5A White LED Camera Flash ABSOLUTE MAXIMUM RATINGS OUT, OUTS, EN1, EN2 to GND ................................-0.3V to +6V FLSH, MOV, LED, COMP GND ....-0. LGND, PGND to GND. ..........................................-0.3V to +0.3V LX ...

Page 3

PWM Boost Converter for 1.5A ELECTRICAL CHARACTERISTICS (continued 5V 4V, C EN1 EN2 OUT OUTS noted.) (Note 1) PARAMETER COMP Input Resistance to GND LED T Derating Function Threshold A LED ...

Page 4

PWM Boost Converter for 1.5A White LED Camera Flash (Circuit of Figure 3.6V EN1 LED CURRENT vs. AMBIENT TEMPERATURE 400 350 300 250 200 150 100 50 0 -40 - ...

Page 5

PWM Boost Converter for 1.5A (Circuit of Figure 3.6V EN1 MOVIE-MODE LED CURRENT vs. MOV RESISTANCE 400 350 300 250 200 150 100 (kΩ) MOV PIN NAME ...

Page 6

PWM Boost Converter for 1.5A White LED Camera Flash LX PGND 1MHz CLOCK COMP EN1 EN2 FLSH MOV GND Figure 1. Functional Diagram Detailed Description Boost Converter The MAX8607 includes a fixed-frequency, PWM boost converter that supplies the LED ...

Page 7

PWM Boost Converter for 1.5A Mode-Select Inputs (EN1, EN2) Drive EN1 high and EN2 low to enable movie mode. In this mode, the current regulator regulates the current through the LED to 1200 times the current set by the ...

Page 8

PWM Boost Converter for 1.5A White LED Camera Flash L1 INPUT 2.2µH 2.7V TO 5.5V 11, 12 MAX8607 OUT OUTS 10µ PGND C3 0.1µF 1 COMP LGND 2 GND EN1 MODE- SELECT 3 INPUTS ...

Page 9

PWM Boost Converter for 1.5A (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) _______________________________________________________________________________________ White LED Camera Flash Package Information 9 ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Package Information (continued) PACKAGE VARIATIONS PKG ...

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