MB3813A Datasheet, PDF (12/22 Pages) Fujitsu Component Limited. – Lithium Ion Battery Charger DC/DC Converter IC (High Precision with Constant-current Function)

MB3813A/MB3833A/MB3843
Error amp. threshold voltage vs. Temperature
2.0
VCC = Vin1 = 16 V
1.5
CTL = 5 V
SEL = 0 V
1.0
0.5
0.0
–0.5
–1.0
–1.5
–2.0
–40 –20
0 20 40 60
Temperature Ta (°C)
80 100
Error Amp. gain, phase vs. Frequency
40
180
30
135
20
90
10
45
0
0
–10
–45
–20
–90
–30
–135
–40
–180
1k
10 k
100 k
1M
10 M
Frequency f (Hz)
Triangular wave frequency vs. RT resistance
1M
VCC = V in1 = 16 V
CTL = 5 V
100 k
10 k
CT = 100 pF
CT = 270 pF
CT = 330 pF
CT = 1500 pF
Error amp. Threshold voltage vs. Temperature
2.0
VCC = Vin1 = 16 V
1.5
CTL = 5 V
SEL = 5 V
1.0
0.5
0.0
–0.5
–1.0
–1.5
–2.0
–40 –20
0 20 40 60
Temperature Ta (°C)
80 100
1 µF
4V
10 kΩ
240 kΩ
2.4 kΩ
VREF
10 kΩ
–
+
+
Error Amp.
2V
Triangular wave frequency vs. CT capacitance
1M
VCC = V in1 = 16 V
CTL = 5 V
100 k
RT = 15 kΩ
10 k
1k
1k
12
10 k
100 k
1M
RT resistance (Ω)
1k
10 p
100 p
1n
10 n
CT capacitance (F)
100 n
(Continued)