MB3870 Datasheet, PDF (12/25 Pages) Fujitsu Component Limited. – Pentium II DC/DC Converter IC

MB3870
(Continued)
ERR threshold (1.3 V setting) vs. Temperature characteristics
1.34
1.32
VCC = 5 V, VB = 5 V, RT = 130 kΩ
1.30
1.28
1.26
1.24
–40.0 –20.0 0.0 20.0 40.0 60.0 80.0 100.0
Temperature Ta (°C)
Error Amp. gain, Phase vs. Frequency characteristics
40
Ta = +25°C
VCC = 5 V
180
30
VB = 5 V
135
20
φ
90
10
45
0
AV
0
–10
–45
–20
–90
–30
–135
–40
–180
1K
10 K 100 K 1 M 10 M
Frequency f (HZ)
Error Amp.
3V
10 kΩ
IN ^{1 µF} 2.4 kΩ
VREF
240 kΩ
–
+
+
10 kΩ
1.5 V
OUT
(Continued)
12