PQ7RV4_01 datasheet(2/6 Pages) SHARP

2 / 6 page

Low Power-Loss Voltage Regulators

PQ7RV4

–20

PD1

PD2

PD1 :No heat sink

PD2 :With infinite heat sink

Ambient temperature Ta (˚C)

Parameter

Symbol

Conditions

Input voltage

Output voltage

Load regulation

Line regulation

Reference voltage

Temperature coefficient of reference voltage

Ripple rejection

Dropout voltage(1)

Dropout voltage(2)

Quiescent current

Unit

MAX.

TYP.

MIN.

3.0

1.5

−

1.225

−

0.5

1.25

±0.01

−

10.0

7.0

2.0

2.5

1.275

−

0.5

1.0

s Electrical Characteristics

❇4 Input voltage shall be the value when output voltage is 95% in comparison with the initial value.

(Unless otherwise specified, conditions shall be VIN=5V,VO=3.3V(R1=2k

Ω),Io=2.0A,Ta=25˚C)

VIN

RegL

RegI

Vref

TCVref

Vi-O(1)

Vi-O(2)

−

IO=5mA to 4.6A

VIN=4 to 10V

−

Tj=0 to125˚C

Refer to Fig. 2

❇4, IO=4.0A

❇4, IO=4.6A

IO=0A

%/˚C

Fig. 2 Test circuit for Ripple Rejection

Fig. 1 Test Circuit

Fig. 3 Power Dissipation vs. Ambient

Temperature

Fig. 4 Reference Voltage Deviation vs.

Junction Temperature

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

–5

–25

100

125

–3

–1

–4

–2

VIN=5V

VO=3.3V

R1=2k

Ω

IO=2A

Junction temperature Tj (˚C)

VIN

Iq 2k

Ω

0.33

µF

Vref

VIN

Ω

0.33

µF

f=120Hz(sine wave)

ei(rms)=0.5V

VO=3V

VIN=5V(R1=2k

Ω)

IO=0.5A

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

Vo=Vref✕(1+R2/R1)

[R1=2k

Ω,Vref Nearly=1.25V]

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