pq1cz21h2z Sharp Microelectronics of the Americas, pq1cz21h2z Datasheet - Page 5

• Manufacturer Part Number: pq1cz21h2z
• Description: Dissipation Current Off-state Chopper Regulator
• Manufacturer: Sharp Microelectronics of the Americas

Fig.16 Polarity Inversion Type Circuit Diagram (-5V output)
Fig.14 Block Diagram
Fig.15 Step Down Type Circuit Diagram (5V output)
5 to 30V
8 to 35V
V
V
IN
IN
1
2
3
4
5
V
V
GND (Common to heat sink)
O
ON/OFF control
IN
OUT
adj
100 F
C
IN
100 F
C
1
IN
1
PQ1CZ21H2Z
PQ1CZ21H2Z
1
5
4
3
4
3
detection circuit
detection circuit
Overcurrent
ON/OFF control signal
Overheat
ON/OFF control signal
OFF
ON/
2
5
2
5
Voltage regulator
F/F
Q
S
3
R
D
D
130 H
L
210 H
OSC.
PWM COMP.
L
3k
1k
R
R
3k
1k
R
R
2
1
2
1
ERROR AMP.
V
ref
2200 F
470 F
C
C
O
O
V
O
V
PQ1CZ21H2Z
5V
2
4
O
5V
Load
Load