PRELIMINARY
DS1050/DS1052
5-Bit Programmable
Pulse Width Modulator
www.dalsemi.com
FEATURES
Single 5-bit programmable pulse width
modulator (PWM)
Adjustable Duty Cycle: 0% to 100%
2.5V to 5.5V Operation
Standard Frequency Values:
1 kHz, 5 kHz, 10 kHz, and 100 kHz
2-Wire Addressable Interface
Packages: 8-Pin DIP, 8-Pin (150 mil) SOIC
and 8-Pin (118 mil)
µSOP
Operating Temperature: -40
o
C to +85
o
C
PIN ASSIGNMENT
DS1050
SCL
SDA
A0
GND
1
2
3
4
8
7
6
5
VCC
A1
A2
PWM
ο
8L-DIP
8L-(150 mil) SOIC
8L-(118 mil)
µSOP
Ordering Information
Part Number
DS1050M-001
DS1050M-005
DS1050M-010
DS1052M-100
DS1050Z-001
DS1050Z-005
DS1050Z-010
DS1052Z-100
DS1050U-001
DS1050U-005
DS1050U-010
DS1052U-100
Frequency Package
1 kHz
8-P 300 mil DIP
5 kHz
8-P 300 mil DIP
10 kHz
8-P 300 mil DIP
100 kHz 8-P 300 mil DIP
1 kHz
5 kHz
10 kHz
100 kHz
1 kHz
5 kHz
10 kHz
100 kHz
8-P 150-mil SOIC
8-P 150-mil SOIC
8-P 150-mil SOIC
8-P 150-mil SOIC
8-P 118-mil
µ
SOP
8-P 118-mil
µ
SOP
8-P 118-mil
µ
SOP
8-P 118-mil
µ
SOP
PIN DESCRIPTION
V
CC
PWM
O
A0,A1,A2
SDA
SCL
GND
2.5V to 5.5V Power Supply
PWM Ouput
Device Address
Serial Data I/O
Serial Clock Input
Ground
DESCRIPTION
The DS1050/DS1052 is a programmable 5-bit pulse width modulator featuring a 2-wire addressable
controlled interface. The DS1050/DS1052 provides operation from power supplies ranging from
2.5 volts up to 5.5 volts. The PWM output provides a signal that swings from 0 volt to V
CC
(power
supply). The DS1050 requires a typical operating current of 500
µA
and a programmable shutdown
supply current of 1
µA.
The DS1052 requires a typical operating current of 500
µA
and a programmable
shutdown supply current of 1
µA.
Four standard PWM output frequencies are offered and include 1 kHz, 5 kHz, 10 kHz, and 100 kHz. 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: including real-time clocks (RTCs), digital
thermometers, and digital potentiometers.
1 of 11
081800
DALLAS [ DALLAS SEMICONDUCTOR ]
