TS3005 Datasheet, PDF (1/11 Pages) Touchstone Semiconductor Inc – A 1.55V to 5.25V, 1.35uA, 1.7ms to 33hrs Silicon Timer

TS3005
A 1.55V to 5.25V, 1.35µA, 1.7ms to 33hrs Silicon Timer
FEATURES
 Ultra Low Supply Current: 1.35μA at 49Hz
 Supply Voltage Operation: 1.55V to 5.25V
 Single Resistor Sets FOUT at 50% Duty Cycle
 3-pin User-Programmable FOUT Period:
 1.7ms ≤ t_FOUT ≤ 33hrs
 FOUT Period Accuracy: 3%
 FOUT Period Drift: 0.02%/ºC
 Single Resistor Sets Output Frequency
 Separate PWM Control and Buffered Output
 FOUT/PWMOUT Output Driver Resistance:
160Ω
DESCRIPTION
The TS3005 is a single-supply, second-generation
Touchstone Semi oscillator/timer fully specified to
operate at a supply voltage range of 1.55V to 5.25V
while consuming less than 1.5μA(max) supply
current. Requiring only a resistor to set the base
output frequency (or output period) at 49Hz (or
20.5ms) with a 50% duty cycle, the TS3005
timer/oscillator is compact, easy-to-use, and versatile.
Optimized for ultra-long life, low frequency,
battery-powered/portable applications, the TS3005
joins the TS3001, TS3002, TS3003, TS3004, and
TS3006 in Touchstone’s CMOS timer family in its
“NanoWatt Analog™” series of high-performance
analog integrated circuits.
APPLICATIONS
Portable and Battery-Powered Equipment
Low-Parts-Count Nanopower Oscillator
Compact Micropower Replacement for Crystal and
Ceramic Oscillators
Micropower Pulse-width Modulation Control
Micropower Pulse-position Modulation Control
Micropower Clock Generation
Micropower Sequential Timing
The TS3005 output period can be user-adjusted from
1.7ms to 33hrs without additional components. In
addition, the TS3005 represents a 25% reduction in
pcb area and a factor-of-10 lower power consumption
over other CMOS-based integrated circuit
oscillators/timers. When compared against industry-
standard 555-timer-based products, the TS3005
offers up to 84% reduction in pcb area and over three
orders of magnitude lower power consumption.
The TS3005 is fully specified over the -40°C to +85°C
temperature range and is available in a low-profile,
10-pin 3x3mm TDFN package with an exposed
back-side paddle.
TYPICAL APPLICATION CIRCUIT
TS3005, 5 Weeks and 5 Days Counter Circuit
The Touchstone Semiconductor logo and “NanoWatt Analog” are
registered trademarks of Touchstone Semiconductor, Incorporated.
Page 1
© 2013 Touchstone Semiconductor, Inc. All rights reserved.