pq1cz1 ETC-unknow, pq1cz1 Datasheet - Page 5

• Manufacturer Part Number: pq1cz1
• Description: Surface Mount Type Chopper Regulator
• Manufacturer: ETC-unknow

Chopper Regulators
Block Diagram
Step Down Type Circuit Diagram (5V output)
Polarity Inversion Type Circuit Diagram (–5V output)
1
V
5 to 30V
V
8~35V
V
IN
IN
IN
Over current
detecting
circuit
Over current
detecting
circuit
+
+
C
100 F
C
100 F
IN
IN
1
1
Voltage
regulator
PWM COMP
F/F
3
PQ1CZ1
PQ1CZ1
––
Q
S
COM
R
4
4
3
3
–
+
ERROR AMP.
ON/OFF
circuit
2
5
2
5
C
C
ON/OFF control signal
ON/OFF control signal
S
S
–
+
R
R
S
S
V
L 210 H
L 130 H
ref
D
D
R
3k
R
1k
R
3k
R
1k
2
1
2
1
2
5
4
R
S
<=50k
V
ON/OFF
O
OUT
R
ADJ
+
+
C
2200 F
C
470 F
S
<=50k
O
O
V
V
O
O
=5V
=–5V
PQ1CZ1