The DS4301 is a single 32-position linear digital poten-
tiometer with 200kΩ end-to-end resistance. The wiper
setting is stored in EEPROM, so the DS4301 powers up
with the last stored setting. The position of the wiper is
controlled through a simple three-terminal
increment/decrement interface. The DS4301 is ideal for
white LED backlight brightness control. Its 8-pin µSOP
package, 2.4V to 5.5V supply range, and 200kΩ end-
to-end resistance are especially suited for portable,
battery-powered applications such as cellular tele-
phones and PDAs.
Features
♦
Single, 32-Position, 200kΩ Linear Nonvolatile (NV)
Potentiometer Ideal for Battery-Powered
Applications
♦
Three-Terminal Increment/Decrement Interface to
Adjust Wiper Position
♦
Wide Voltage Supply Range (2.4V to 5.5V)
♦
Command-Initiated NV Wiper Storage
♦
Operates Over the Industrial Temperature Range
(-40°C to +85°C)
♦
Available in 8-Pin µSOP
DS4301
Applications
White LED Backlight Brightness Control
Portable Battery-Powered Devices such as PDAs
and Cellular Phones
Any Application that Requires a Small, Low-Cost
NV Potentiometer
TOP VIEW
INC
U/D
H
GND
1
2
3
4
Ordering Information
PART
DS4301U-200
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
8 µSOP (118 mil)
Pin Configuration
8
7
V
CC
CS
L
W
DS4301
6
5
µSOP
Typical Operating Circuit
V
CC
V
CC
V
CC
H
V
REF
1µF
V
CC
10µH
10µF
MBR0540
1µF
0.1µF
DS4301
CONTROL
INTERFACE
CS
INC
U/D
W
V
CC
ADJ
WHITE LED
CURRENT
REGULATOR
GND
EXT
CS
FB
R
FB
WHITE
LEDs
L
GND
PGND
______________________________________________
Maxim Integrated Products
1
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.
Nonvolatile, 32-Position Digital Potentiometer
DS4301
ABSOLUTE MAXIMUM RATINGS
Voltage Range on V
CC
Pin Relative to Ground .....-0.5V to +6.0V
Voltage Range on
CS, INC,
U/D, L, W, H Pins
Relative to Ground*.....................................-0.5V to V
CC
+ 0.5V
Wiper Current .....................................................................±3mA
Operating Temperature Range ...........................-40°C to +85°C
Programming Temperature.....................................0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature .......................................See IPC/JEDEC
J-STD-020A Specification
*Not to exceed 6.0V
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.
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