MB39A119 Datasheet, PDF (13/53 Pages) Fujitsu Component Limited. – DC/DC Converter IC of Synchronous Rectification for charging Li-ion battery

MB39A119
Triangular Wave Oscillation Frequency vs.
Operating Ambient Temperature
580
560
VCC = 19 V
CTL = 5 V
540
RT = 39 kΩ
520
500
480
460
440
420
−40 −20 0
20 40 60 80 100
Operating ambient temperature Ta ( °C)
Triangular Wave Oscillation Frequency vs.
Timing Resistor
10000
Ta = +25 °C
VCC = 15 V
CTL = 5 V
1000
100
1
10
100
1000
Timing Resistor RT (kΩ)
Error Amplifier Gain, Phase vs. Frequency (ERR1, 2)
50
40
30
20
10
0
−10
−20
−30
−40
−50
100
225
Ta = +25 °C ₁₈₀
φ
135
90
45
Av
0
−45
−90
−135
−180
−225
1k
10k 100k 1M 10M
Frequency f (Hz)
Error Amplifier Gain, Phase vs. Frequency (ERR3)
50
40
30
20
10
0
−10
−20
−30
−40
−50
100
225
Ta = +25 °C ₁₈₀
φ
135
90
45
Av
0
−45
−90
−135
−180
−225
1k 10k 100k 1M 10M
Frequency f (Hz)
10 kΩ 10 kΩ
IN 1 µF_{+ 2.4 kΩ}
10 kΩ 10 kΩ
VCC = 19 V
4.2 V
240 kΩ
8−
(13)
14
7+
(12)
Error Amp1
(Error Amp2)
OUT
V_CC = 19 V
10 kΩ
240 kΩ
IN 1 µF_{+ 2.4 kΩ}
15 −
14
+
10 kΩ
4.2 V
Error Amp3
OUT
(Continued)
13