PQ1CG203 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

Manufacturer

PQ1CG203

TO-220 Type Chopper Regulator

Sharp Electronics 

Fig.10 Oscillation Frequency Fluctuation vs.

Junction Temperature

5

0

-5

-10

-25

VIN=12V

VO=5V

0 25 50 75 100 125

Junction temperature Tj(°C)

PQ1CG2032FZH/PQ1CG2032RZH

Fig.11 Overcurrent Detecting Level

Fluctuation vs. Junction Temperature

6

4

2

0

-2

-4

-6

-8

-25 0 25 50 75 100 125

Junction temperature Tj(°C)

Fig.12 Threshold Voltage vs. Junction

Temperature

3

VTH(H)

VIN=12V

2.5

2

VTH(L)

1.5

1

0.5

0

-25

VTH(ON)

0 25 50 75 100 125

Junction temperature Tj(°C)

Fig.13 Operating Dissipation Current vs.

Input Voltage

10

Tj=25°C

VO=5V

9

IO=1A

8

7

IO=3A

6

No load　

5

0

10

20

30

40

Input voltage VIN(V)

Fig.14 Block Diagram

1 VIN

Overcurrent

detection

circuit

Overheat

detection

circuit

Voltage

regulator

ON/OFF

circuit

PWM COMP.

+

−

Q

F/F R

S

ERROR AMP.

−

+

Vref

3 COM

2 VOUT

5 ON/OF F

4 Oadj

Sheet No.: OP06084

4

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