MAX1916EZT-T Maxim Integrated Products, MAX1916EZT-T Datasheet

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MAX1916EZT-T

Manufacturer Part Number
MAX1916EZT-T
Description
LED Drivers Low-Dropout Linear C urrent Regulator for
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1916EZT-T

Number Of Segments
3
Low Level Output Current
60000 uA (Min)
Operating Supply Voltage
2.5 V to 5.5 V
Maximum Power Dissipation
727 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOT-23
Minimum Operating Temperature
- 40 C

Available stocks

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Price
Part Number:
MAX1916EZT-T
Manufacturer:
MAXIM
Quantity:
15
The MAX1916 low-dropout bias supply for white LEDs
is a high-performance alternative to the simple ballast
resistors used in conventional white LED designs. The
MAX1916 uses a single resistor to set the bias current
for three LEDs, which are matched to 0.3%. The
MAX1916 consumes only 40µA of supply current when
enabled and 0.05µA when disabled.
The MAX1916’s advantages over ballast resistors
include significantly better LED-to-LED bias matching,
much lower bias variation with supply voltage variation,
significantly lower dropout voltage, and in some appli-
cations, significantly improved efficiency. The MAX1916
requires a 200mV dropout at a 9mA load on each out-
put to match the LED brightness.
The MAX1916 is available in a space-saving 6-pin Thin
SOT23 package.
19-2067; Rev 0; 7/01
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.
Next-Generation Wireless Handsets
PDAs, Palmtops, and Handy Terminals
Digital Cameras, Camcorders
Battery-Powered Equipment
ON
OFF
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
V
EN
SET
CTRL
General Description
MAX1916
LED1 LED2 LED3
V+
GND
Applications
Low-Dropout, Constant-Current
Triple White LED Bias Supply
o Low 200mV Dropout at 9mA
o Up to 60mA/LED Bias Current
o 0.3% LED Current Matching
o Simple LED Brightness Control
o Low 40µA Supply Current
o Low 0.05µA Shutdown Current
o 2.5V to 5.5V Supply Voltage Range
o Thermal Shutdown Protection
o Tiny 6-Pin Thin SOT23 Package (1mm High)
MAX1916EZT
TOP VIEW
PART
GND
TEMP. RANGE
-40°C to +85°C
SET
EN
1
2
3
THIN SOT23-6
Ordering Information
MAX1916
Pin Configuration
6 Thin SOT23
PIN-
PACKAGE
4
6
5
LED1
LED2
LED3
Features
MARK
AAAG
TOP
1

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MAX1916EZT-T Summary of contents

Page 1

... Simple LED Brightness Control o Low 40µA Supply Current o Low 0.05µA Shutdown Current o 2.5V to 5.5V Supply Voltage Range o Thermal Shutdown Protection o Tiny 6-Pin Thin SOT23 Package (1mm High) Applications PART MAX1916EZT TOP VIEW Features Ordering Information PIN- TOP TEMP. RANGE PACKAGE ...

Page 2

Low-Dropout, Constant-Current Triple White LED Bias Supply ABSOLUTE MAXIMUM RATINGS EN, SET, LED1, LED2, LED3 to GND ..................... -0.3V to +6V Continuous Power Dissipation (T = +70°C) A 6-Pin Thin SOT23 (derate 9.1mW/°C above +70°C) ... 727mW Stresses beyond those ...

Page 3

V = 3.3V 24.9kΩ 5V +25°C, unless otherwise noted.) (Circuit of Figure 1) EN CTRL SET LED CURRENT vs. V+ BIAS VOLTAGE LED3 LED2 10 LED1 5 ...

Page 4

Low-Dropout, Constant-Current Triple White LED Bias Supply (V = 3.3V 3.3V 24.9kΩ 5V +25°C, unless otherwise noted.) (Circuit of Figure 1) EN CTRL SET I SUPPLY CURRENT EN vs. V SUPPLY ...

Page 5

PIN NAME Enable Input/Power Input. Drive high (> 2.5V) to enable; drive low (< 2.2V) to disable. When 1 EN disabled, SET, LED1, LED2, and LED3 are high impedance. When enabled the power input for the MAX1916. 2 ...

Page 6

Low-Dropout, Constant-Current Triple White LED Bias Supply V+ V EXISTING CTRL LDO SET LED1 LED2 LED3 ON EN OFF MAX1916 GND Figure 2. Very Low-Cost, High-Efficiency Solution V+ V CTRL DAC LED1 LED2 LED3 SET ON EN OFF MAX1916 GND ...

Page 7

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 © 2001 Maxim Integrated Products ...

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