HA17L431HA17L431A_15 Datasheet, PDF (7/11 Pages) Renesas Technology Corp – Shunt Regulator

HA17L431/HA17L431A Series
Noise Recovery Characteristics of HA17L431A and HA17L431
The HA17L431A bettered V_KA and Vref recovery time against the HA17L431 when it was inputted noise.
15 V
12 kΩ
Input pulse
1V
0V
50 ms
220 pF
(External)
Pulse
generator
680 Ω
V_KA
(Cathode)
(REF)
Shunt _(Anode)
Regulators
7.5 kΩ
0.1 μF
Vref
4.7 kΩ
Vout
220 μF
Figure 1 Noise Response Characteristics Measurement Circuit
Tek Run: 25.0MS/s
Sample Trig?
[⋅⋅⋅⋅⋅T⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅]
T
Input Noise
1
Tek Run: 25.0MS/s
Sample Trig?
[⋅⋅⋅⋅⋅T⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅]
T
Input Noise
1
V_KA
V_KA
Vref
Vref
2
2
Ch1 500mV
Ch3 1.00 V
Ch2 1.00 V M 2.00μs Ch2
Waveform of HA17L431A
2.46 V
Ch1 500mV
Ch3 1.00 V
Ch2 1.00 V M 2.00μs Ch2
Waveform of HA17L431
Figure 2 Noise Recovery Characteristics
2.46 V
R03DS0089EJ0700 Rev.7.00
Jan 10, 2014
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