TS3003DB Datasheet, PDF (1/4 Pages) Touchstone Semiconductor Inc – A 1.55V to 5.25V, 1.9A, 9kHz to 300kHz Silicon Timer

TS3003 Demo Board
A 1.55V to 5.25V, 1.9µA, 9kHz to 300kHz Silicon Timer
FEATURES
 5V Supply Voltage
 FOUT/PWMOUT Output Period: 40µs(25kHz)
o RSET = 4.32MΩ
 PWMOUT Output Duty Cycle:
o 75% for FDIV2:0 = 000
o CPWM = 100pF
 PWMOUT Duty Cycle Reduction
o 1MΩ Potentiometer
 Fully Assembled and Tested
 2in x 2in 2-layer circuit board
COMPONENT LIST
DESIGNATION QTY
C1
1
C2
1
R2
1
R1
1
PWM_ADJ
1
U1
1
VDD,F_OUT,
3
PWM_OUT
J1
1
DESCRIPTION
100pF ±10%
capacitor (0805)
4.7µF ±10%
capacitor (0805)
10MΩ ± 1% (0805)
4.32MΩ ± 1% (0805)
1MΩ Potentiometer
TS3003
Test points
Jumper
DESCRIPTION
The TS3003 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 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 TS3003
timer/oscillator is compact, easy-to-use, and versatile.
Optimized for ultra-long life, low frequency,
battery-powered/portable applications, TS3003 joins
the TS3001, TS3002, TS3004, and TS3006 in
Touchstone’s CMOS timer family in its “NanoWatt
Analog™” series of high-performance analog
integrated circuits.
The TS3003 requires only an RSET = 4.32MΩ
resistor to set the FOUT/PWMOUT output period to
40µs(25kHz). With an on-board 100pF CPWM
capacitor, the duty cycle of PWMOUT is set at
approximately 75%. Further reduction of the duty
cycle is available with an on-board 1MΩ
potentiometer. The complete circuit is designed at a
supply voltage of 5V. The TS3003 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.
Product datasheet and additional documentation can
be found on the factory web site at
www.touchstonesemi.com.
ORDERING INFORMATION
Order Number
TS3003DB
Description
TS3003
Demo Board
Figure 1. TS3003 Demo Board Circuit
Page 1
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