Chopper Regulators

PQ1CF2

Parameter

Symbol

Conditions

Unit

MAX.

TYP.

MIN.

-

1.235

-

-

-

-

80

-

90

1.55

-15

1.95

3.25

1.05

-

-

0.9

1.26

±0.5

0.1

0.5

82

100

±2

-

2.0

-10

2.25

3.55

1.4

150

8

1.5

1.285

-

1.5

2.5

-

120

-

-

2.6

-5

2.55

3.85

1.75

400

12

s Electrical Characteristics

η

fo

∆fo

-

-

4 terminal is open

24 terminal is open

Duty=0%, 4terminal=0V, 5terminal

4terminal=0V,5terminal

V

V

%

%

%

%

kHz

%

%

A

µA

V

V

V

µA

mA

Output saturation voltage

Reference voltage

Temperature fluctuation in reference voltage

Load regulation

Line regulation

Efficiency

Oscillation frequency

Oscillation frequency temperature fluctuation

Maximum duty

Overcurrent detecting level

Charge current

Input threshold voltage

On threshold voltage

Stand-by current

Output OFF-state consump-tion current

s Block Diagram

Overcurrent

detection

circuit

Overheat

detection

circuit

Voltage

regulator

ON/OFF

circuit

PWM COMP.

+

-

+

-

F/F

Q

R

S

3 COM

5 ON/OFF

↓

Fig.1 Test Circuit

100

µF

470

µF

1k

Ω

+

+

q

3

q

4

q

1

q

2

q

5

A

A

L

210

µH

L : HK-14D100-2110 (made by Toho Co.)

D : ERC80-004 (made by Fuji electronics Co.)

PQ1CF2

Fig.2

Power Dissipation vs. Ambient

Temperature

,,

,,

,,

,,

20

0

5

10

15

-20

0

20

40

60

100

80

Note) Oblique line portion : Overheat

protection may operate in this area.