TS3004 Datasheet, PDF (7/11 Pages) Touchstone Semiconductor Inc – A 1.55V to 5.25V, 1.9uA, 3.3us to 233s Silicon Timer

BLOCK DIAGRAM
TS3004
FDIV
2:0
t_FOUT(s)
FOUT (Hz) I_CPWM (A)
000
3.3µ-111.1µs
300k-9k
1µ
001 26.4µ-888.88µs 37.5k-1.125k
1µ
010 211.2µ-7.11ms 4.69k-140.62 100n
011 1.7ms-56.88ms
586-17.578
100n
100 13.6ms-455.16ms 73.25-2.197
100n
101
108.8ms-3.64
9.16-0.2746
100n
110 870.4ms-29.15
1.14-0.0343
100n
111
6.99-233
0.143-0.00429 100n
Table 1: FOUT and PWMOUT Frequency Range per FDIV2:0 Combination
THEORY OF OPERATION
The TS3004 is a user-programmable oscillator where
the period of the square wave at its FOUT terminal is
generated by an external resistor connected to the
RSET pin. The output period is given by:
8 ^{V2 0} x RS T
t _{O T} s = _{1.08 11}
Equation 1. FOUT Frequency Calculation where
FDIV2:0 = 0 to 7
TS3004DS r1p0
R_SET (MΩ)
t_FOUT(s)
0.360
6.99
1
19.42
2.49
48.35
4.32
83.89
6.81
132.27
9.76
189.39
12
233
Table 2: t_FOUT vs R_SET for FDIV2:0 = 111(7)
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