PQ7DV5 datasheet(2/5 Pages) SHARP

Part #	PQ7DV5

Description	Variable Output Type, High Output Current(5A)Type Low Power-loss Voltage Regulators

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Manufacturer	SHARP [Sharp Corporation]

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Low Power-Loss Voltage Regulators

PQ7DV5

0

–20

0

PD1

PD2

PD1 :No heat sink

PD2 :With infinite heat sink

40

20

60

80

20

10

30

40

50

60

Ambient temperature Ta (˚C)

Fig. 3 Power Dissipation vs. Ambient

Temperature

Fig. 4 Overcurrent Protection

Characteristics(Typical Value)

Parameter

Symbol

Conditions

Input voltage

Output voltage

Reference voltage

Load regulation

Line regulation

Temperature coefficient of reference voltage

Ripple rejection

Dropout voltage

ON-state voltage for control

ON-state current for control

OFF-state voltage for control

OFF-state current for control

Quiescent current

Unit

MAX.

TYP.

NIN.

3

1.5

1.225

−

45

−

2.0

−

1.25

0.5

±0.01

55

−

10

7

1.275

2.0

2.5

−

0.5

−

20

0.8

–0.4

17

s Electrical Characteristics

❇3 In case of opening control terminal ➃, output voltage turns on.

(Unless otherwise specified, conditions shall be VIN=5V, IO=2.5A, VO=3V[R1=2k

Ω]Ta=25˚C)

VIN

VO

Vref

RegL

RegI

TCVO

RR

Vi-o

VC(ON)

IC(ON)

VC(OFF)

IC(OFF)

Iq

−

IO=5mA to 5.0A

VIN=4 to 10V

Tj=0 to 125˚C

Refer to Fig. 2

VIN=3V, IO=5A

−

VC=2.7V

−

VC=0.4V

Io=0A

V

%

%/˚C

dB

V

µA

V

mA

❇3

Fig. 1 Test Circuit

Fig. 2 Test Circuit for Ripple Rejection

0

2.0

4.0

6.0

8.0

10

12

100

80

40

60

20

0

Output current IO (A)

Note)

Oblique line portion : Overheat protection may operate in this area.

f=120Hz(sine wave)

ei(rms)=0.5V

VIN=5V

VO=3V(R1=2k

Ω)

IO=0.5A

RR=20 log(ei(rms)/eo(rms))

A

V

A

VIN

VC

Iq 2k

Ω

IO

VO

RL

47

µF

0.33

µF

+

R2

R1

Vref

1

5

2

4

3

V

VC

2.7V

VIN

ei

2k

Ω

IO

RL

0.33

µF

47

µF

+

R2

R1

+

Vref

1

5

2

4

3

Vo=Vref✕(1+R2/R1)

[R1=2k

Ω,Vref Nearly=1.25V]

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