MB3825A
Control current vs. control voltage
500
Ta = +25 °C
VCC = 6 V
VCTL1 = 6 V
400
300
200
100
0
0
5
10
15
20
Control voltage VCTL2 (V)
Triangular wave time vs. timing capacitor
100 Ta = +25 °C
VCC = 6 V
RT = 39 kΩ
10
1
0
10
102
103
104
Timing capacitor CT (pF)
Triangular wave frequency stability
vs. ambient temperature
15
VCC = 6.0 V
CT = 100 pF
10 RT = 39 kΩ
5
0
−5
−10
−15−50
−25
0
25
50
75 100
Ambient temperature Ta ( °C)
Triangular wave upper and lower limit voltage
vs. timing capacitor
1.6
Ta = +25 °C
VCC = 6.0 V
RT = 39 kΩ
1.4
Upper
1.2
1.0
Lower
0.8
10
102
103
104
Timing capacitor CT (pF)
Oscillator frequency vs. timing resistor
10 M
CT = 47 pF
CT = 100 pF
1 M CT = 150 pF
CT = 300 pF
Ta = +25 °C
VCC = 6.0 V
CT = 1500 pF
100 k
10 k
1k
1k
10 k
100 k
1M
Timing resistor RT (Ω)
Triangular wave upper and lower limit voltage
vs. ambient temperature
1.7
VCC = 6.0 V
1.6 RT = 39 kΩ
1.5 CT = 100 pF
1.4
upper
1.3
1.2
1.1
lower
1.0
0.9
0.8
0.7
−50 −25
0
25
50 75 100
Ambient temperature Ta ( °C)
(Continued)
15