1 of 17

072701

FEATURES

§ Single 5-bit, programmable, pulse-width

modulator (PWM)

§ Adjustable Duty Cycle: 0% to 100%

§ 2.7V to 5.5V Operation

§ Standard Frequency Values:

1kHz, 5kHz, 10kHz, and 25kHz

§ 2-Wire Addressable Interface

§ Packages: 8-Pin (150-mil) SOIC and 8-Pin

(118-mil)

mSOP

§ Operating Temperature: -40

ORDERING INFORMATION

DS1050Z-001

1kHz

8-Pin 150-mil SOIC

DS1050Z-005

5kHz

8-Pin 150-mil SOIC

DS1050Z-010

10kHz

8-Pin 150-mil SOIC

DS1050Z-025

25kHz

8-Pin 150 mil SOIC

DS1050U-001

1kHz

8-Pin 118-mil

mSOP

DS1050U-005

5kHz

8-Pin 118-mil

mSOP

DS1050U-010

10kHz

8-Pin 118-mil

mSOP

DS1050U-025

25kHz

8-Pin 118-mil µSOP

PIN ASSIGNMENT

PIN DESCRIPTION

- 2.7V to 5.5V Power Supply

- PWM Ouput

A0, A1, A2

- Device Address

SDA

- Serial Data I/O

SCL

- Serial Clock Input

GND

- Ground

DESCRIPTION

The DS1050 is a programmable, 5-bit, pulse-width modulator featuring a 2-wire addressable controlled

interface. The DS1050 operates from power supplies ranging from 2.7V up to 5.5V. The PWM output

mA

and a programmable shutdown supply current of 1

mA.

Four standard PWM output frequencies are offered and include 1kHz, 5kHz, 10kHz, and 25kHz. The

2-wire addressable interface allows operation of multiple devices on a single 2-wire bus and provides

compatibility with other Dallas Semiconductor 2-wire devices such as real-time clocks (RTCs), digital

thermometers, and digital potentiometers.

The device is ideal for low-cost LCD contrast and/or brightness control, power supply voltage

adjustment, and battery charging or current adjustment. The DS1050 is offered in standard integrated

circuit packaging including the 8-pin (150-mil) SOIC and space-saving 8-pin (118-mil)

mSOP.

SCL

SDA

A0

A1

A2

GND

6

7

8

5

3

2

1

4

8-Pin 150-mil SOIC

8-Pin 118-mil

mSOP

DS1050

5-Bit, Programmable, Pulse-

Width Modulator: 1kHz, 5kHz, 10kHz, and 25kHz

www.maxim-ic.com