HA17301P Datasheet, PDF (10/14 Pages) Hitachi Semiconductor – Quad Operational Amplifier

HA17301P
3. Power Comparator
As shown in figure 13, adding an external transistor allows the circuit to drive loads that require a larger
current than the output current that the HA17301P can supply.
V+
V_REF
Vin
−
1 MΩ
+
1 MΩ
5.1 kΩ
12ESB
40 mA
LAMP
15 Ω
2SC458 K
Figure 13 Power Comparator
24
20
16
12
8
4
0
2
4
6
8
10 12 14 16 18
Input voltage Vin (V)
Figure 14 Power Comparator Operating Characteristics
10