MB3800 Datasheet, PDF (10/21 Pages) Fujitsu Component Limited. – Switching Regulator Controller (Low Voltage)

MB3800
Output source current vs. BR/CTL pin input current
-50
-40
V CC = 2 V
-30
V OUT = 0.9 V
T a = +25°C
-20
-10
0
0
-0.4
-0.8
-1.2 -1.6
-2.0
BR/CTL pin input current I BR (mA)
Average supply current vs. BR/CTL pin input current
5.0
V CC = 2 V
T a = +25°C
4.0
3.0
2.0
1.0
0
0
-20
-40
-60
-80
-100
BR/CTL pin input current I BR (μA)
Frequency variation ratio vs. Supply voltage
10
C T = 270 pF
R T = 3.0 kΩ
5
Ta = +25°C
0
-5
-10
-15
0 2 4 6 8 10 12 14 16
Supply voltage V CC (V)
Document Number: 002-08716 Rev. *A
BR/CTL pin input voltage vs. BR/CTL pin input current
500
V CC = 2 V
T a = +25°C
400
300
200
100
0
0
-0.4
-0.8
-1.2 -1.6
-2.0
BR/CTL pin input current I BR (mA)
Oscillation frequency vs.Timing resistor
1M
500 k
C T = 100 pF
V CC = 2 V
T a = +25°C
200 k
100 k
50 k
C T = 1000 pF
20 k
10 k
C T = 10000 pF
5k
2k
1k 2k
5 k 10 k
20 k
Timing resistor R T (Ω)
Frequency variation ratio vs. Operating ambient temperature
10
V CC = 2 V
C T = 270 pF
5
R T = 3.0 kΩ
0
-5
-10
-15
-40
-20 0 +20 +40 +60 +80 +100
Operating ambient temperature T a (°C)
(Continued)
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