HA17431_15 Datasheet, PDF (9/21 Pages) Renesas Technology Corp – Shunt Regulator

HA17431 Series
HA17431P/PA/FP/FPA/PNA/UA, HA17432UA
Oscillation Stability vs. Load Capacitance between Anode and Cathode
150
1.5
100 Stable
region
Oscillation
region
50
V_CC
C_L
0
0.0001
0.001
0.01
0.1
1.0 2.0
Load capacitance C_L (μF)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics (1)
(With no feedback capacitance)
60
G_V
50
I_K = 10 mA
0
40
φ
30
90
20
220 Ω
15 kΩ
10
10 μF
Vout
Vin
8.2 kΩ GND
180
0
10
100
1k
10 k 100 k
Frequency f (Hz)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics (2)
(When a feedback capacitance (Cf) is provided)
10
I_K = 5 mA
Gυ
8
Gυ
180
Cf = 0.022 μF
5
φ
Cf = 0.22 μF
270
0 _{200 μF}
2k
Cf _{+ Vout}
2.4 kΩ
20 V
–
Vin
50 Ω
GND
–4
10
100
1k
360
10 k
Frequency f (Hz)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
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