Electrical Characteristics (Cont’d):
Parameter
Guard Circuit
Output Voltage, Pin7
Internal Series Resistance of Pin7
Guard Circuit Activates
General Data
Open Loop Gain
Frequency Response
(TA = +25°C, VCC (V9–4) = 26V, Note 1, Note 3 unless
otherwise specified)
Symbol Test Conditions Min Typ Max Unit
V7–2 RL = 100kΩ, Note 11 4.1 4.5 5.8
V
IL = 0.5mA, Note 11
3.4 3.9 5.3
V
Ri7
0.95 1.35 1.7 kΩ
V8–2 Note 9
–
– 1.0
V
GO at 1kHz, Note 10
f
–3dB, Note 12
– 33 –
– 60 – kHz
Note 1. Pin2 and Pin4 are externally connected to GND.
Note 3. Pin1 externally connedted to Pin3.
Note 4. Non–repetitive duty factor 3.3%.
Note 5. The maximum supply voltage should be chosen so that during flyback the voltage at Pin 5
does not exceed 60V.
Note 6. When V5–4 is 13V and no load at Pin5.
Note 7. Duty cycle, d = 5% or d = 0.05
Note 8. When Pin3 is driven separately from Pin1.
Note 9. During normal operation the voltage V8–2 may not be lower than 1.5V
Note10. RL = 8Ω; IL = 125mARMS
Note 11. If guard circuit is active.
Note12. With a 22pF capacitor between Pin1 and Pin5.
Pin Connection Diagram
(Front View)
9 VCC
8 Flyback Generator
7 Voltage Stabilizer
6 Output Stage Supply Input
5 Output
4 Output Stage GND
3 Switching Circuit
2 GND
1 Input