NJM2381 Datasheet, PDF (6/8 Pages) New Japan Radio – SWITCHING REGULATOR CONTROL IC FOR FLYBACK WITH CURRENT SENSE AMPLIFIER

NJM2381
sTIPICAL CHARACTERISTICS
H Output Voltage vs. Source Current
(V⁺=6V,R_T=33kΩ,C_T=1000pF,
8
OUT Pin=0V,Ta=25°C)
7
6
5
4
3
2
1
0
0
2
4
6
8 10 12
Source Current I_SOURCE (mA)
1000
Oscillator Frequency vs. Timing Resistor
(V⁺=6V,Ta=25°C)
L Output Voltage vs. Sink Current
1 ^{(V+=6V,RT=33kΩ,CT=1000pF,Ta=25°C)}
0.8
0.6
0.4
0.2
0
0 10 20 30 40 50 60
Sink Current I_SINK (mA)
Oscillator Frequency vs. Timing Capacitor
1000
(V⁺=6V,Ta=25°C)
100
C_T=470pF
10
C_T=1000pF
1
1
10
100
1000 10000
Timing Resistor R_T (kΩ)
Reference Voltage vs. Operating Voltage
(V⁺=6V,Ta=25°C)
2.52
2.51
2.5
2.49
2.48
0
10
20
30
40
Operating Voltage V⁺ (V)
100
R_T=10kΩ
10
R_T=33kΩ
R_T=100kΩ
1
10
100
1000 10000 100000
Timing Capacitor C_T (pF)
Operating Current vs. Operating Voltage
6
(Ta=25°C)
5
4
3
I_CCAV
2
1
I_CCLA
0
0
10
20
30
40
Operating Voltage V⁺ (V)
-6-