TS3004 Datasheet, PDF (1/12 Pages) Touchstone Semiconductor Inc – A 1.55V to 5.25V, 1.9uA, 3.3us to 233s Silicon Timer

TS3004
A 1.55V to 5.25V, 1.9µA, 3.3µs to 233s Silicon Timer
FEATURES
 Ultra Low Supply Current: 1.9μA at 25kHz
 Supply Voltage Operation: 1.55V to 5.25V
 Single Resistor Sets FOUT at 50% Duty Cycle
 3-pin User-Programmable FOUT Period:
 3.3µs ≤ tFOUT ≤ 233s
 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 TS3004 is a single-supply, second-generation
oscillator/timer fully specified to operate over a supply
voltage range of 1.55V to 5.25V while consuming less
than 2.4μA(max) supply current. Requiring only a
resistor to set the base output frequency (or output
period) at 25kHz (or 40µs) with a 50% duty cycle, the
TS3004 timer/oscillator is compact, easy-to-use, and
versatile. Optimized for ultra-long life, low frequency,
battery-powered/portable applications, the TS3004
joins the TS3001, TS3002, TS3003 and TS3006 in
the CMOS timer family of “NanoWatt Analog™” 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 TS3004 output period can be user-adjusted from
3.3µs to 233s without additional components. In
addition, the TS3004 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 TS3004
offers up to 84% reduction in pcb area and over three
orders of magnitude lower power consumption.
The TS3004 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
TS3004 Flashing Railroad Lights Circuit
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