MB3878 Fujitsu Media Devices, MB3878 Datasheet - Page 10

• Manufacturer Part Number: MB3878
• Description: DC/DC Converter IC for Charging
• Manufacturer: Fujitsu Media Devices

10
MB3878
340
330
320
310
300
290
280
270
260
250
240
100 k
10 k
1 M
40
10 k
Triangular wave oscillator frequency vs.
Triangular wave oscillator frequency
20
Ambient temperature Ta ( C)
Timing resistor R
0
timing resistor
20
100 k
40
T
60
( )
VCC
CTL
RT
Ta
VCC
CTL
47 k
80
5 V
19 V
25 C
5 V
19 V
100
1 M
340
330
320
310
300
290
280
270
260
250
240
5.0
4.0
3.0
2.0
1.0
0.0
1.0
2.0
3.0
4.0
5.0
Triangular wave oscillator frequency vs.
0
40
Error amplifier threshold voltage vs.
ambient temperature (Error Amp.3)
Ambient temperature Ta ( C)
Power supply voltage V
20
5
power supply voltage
0
10
20
40
15
60
CC
Ta
CTL
RT
VCC
CTL
(V)
20
80
47 k
25 C
(Continued)
5 V
5 V
19 V
100
25