Low Power-Loss Voltage Regulators |
PQ7VZ5 |
PQ7VZ5
Variable Output, Compact Surface Mount Type Low Power-Loss Voltage Regulators
■ Features
¡Low power-loss (Dropout voltage:MAX. 0.5V)
¡Variable output type (1.5V to 7V)
¡Surface mount type package (equivalent to EIAJ SC-63)
¡Output current:MAX.0.5A
¡Low dissipation current at OFF-state (Iqs:MAX.5µA)
¡Built-in ON/OFF control function
¡Reference voltage precision:±2.0%
¡Tape packaged type is also available. (Reel:3 000pcs.)
■ Applications
¡Personal computers
¡Word processors
¡Printers
¡Camcoders
¡Personal Information Tools(PDA)
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Outline Dimensions |
(Unit : mm) |
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6.6MAX |
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2.3±0.5 |
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5.2±0.5 |
3 |
(0.5) |
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9.7MAX |
5.5±0.5 |
7VZ5 |
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(1.7) |
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(0to0.25) |
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0.5 |
+0.2 |
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2.5MIN |
-0.1 |
(0.9) |
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4-(1.27) |
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(0.5) |
1 2 3 4 5
Internal connection diagram
1 |
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3 |
1 VIN |
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2 ON/OFF control |
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3 VOUT |
2 |
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Specific IC |
4 |
4 OADJ |
5 GND
5Heat sink is common to 3 (VOUT)
■ Absolute Maximum Ratings |
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(Ta=25˚C) |
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Parameter |
Symbol |
Rating |
Unit |
*1 |
Input voltage |
VIN |
10 |
V |
*1 |
ON/OFF control terminal voltage |
VC |
10 |
V |
*1 |
Output adjustment terminal voltage |
VADJ |
7 |
V |
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Output current |
IO |
0.5 |
A |
*2 |
Power dissipation |
PD |
8 |
W |
*3 |
Junction temperature |
Tj |
150 |
˚C |
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Operating temperature |
Topr |
-20 to +80 |
˚C |
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Storage temperature |
Tstg |
-40 to +150 |
˚C |
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Soldering temperature |
Tsol |
260 (For 10s) |
˚C |
*1 All are open except GND and applicable terminals.
*2 PD:With infinite heat sink.
*3 Overheat protection may operate at 125=<Tj=<150˚C
· Please refer to the chapter“ Handling Precautions ”.
“ In the absence of confirmation by device specification sheets,SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs,data books,etc.Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device. ”
Low Power-Loss Voltage Regulators |
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PQ7VZ5 |
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■ Electrical Characteristics |
(Unless otherwise specified, conditions shall be VIN=5V, VO=3V(R1=1kΩ), Io=0.3A, VC=2.7V, Ta=25˚C) |
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Parameter |
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Symbol |
Condition |
NIN. |
TYP. |
MAX. |
Unit |
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Input voltage |
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VIN |
- |
3.4 |
- |
10.0 |
V |
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Output voltage variable range |
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VO |
- |
1.5 |
- |
7.0 |
V |
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Load regulation |
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RegL |
IO=5mA to 0.5A |
- |
0.2 |
2.0 |
% |
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Line regulation |
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RegI |
VIN=4 to 10V, IO=5mA |
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0.2 |
2.5 |
% |
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Ripple rejection |
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RR |
Refer to Fig. 2 |
45 |
60 |
- |
dB |
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Dropout voltage |
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Vi-o |
VIN=3.4, IO=0.3A |
- |
- |
0.5 |
V |
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Reference voltage |
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Vref |
- |
1.225 |
1.25 |
1.275 |
V |
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Temperature coefficient of reference voltage |
TCVref |
IO=5mA, Tj=0 to 125˚C |
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±1.0 |
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% |
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ON-state voltage for control |
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VC (ON) |
*4 |
2.0 |
- |
- |
V |
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ON-state current for control |
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IC (ON) |
- |
- |
- |
200 |
μA |
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OFF-state voltage for control |
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VC (OFF) |
IC=0A |
- |
- |
0.8 |
V |
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OFF-state current for control |
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IC (OFF) |
VC=0.4V, IC=0A |
- |
- |
2 |
μA |
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Quiescent current |
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Iq |
IC=0A |
- |
4 |
7 |
mA |
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Output OFF-state consumption current |
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Iqs |
VC=0.4V |
- |
- |
5 |
μA |
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*4 In case of opening control terminal 2 , output voltage turns off.
Fig.1 |
Test Circuit |
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Fig.2 |
Test Circuit for Ripple Rejection |
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VIN |
0.33μF 1● |
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3● |
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47μF |
VO |
0.33μF |
1● |
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3● |
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47μF |
+ |
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R2 |
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A |
IO |
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R2 |
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IO |
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ei |
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47μF |
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VC 2● |
5● |
4● |
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+ |
~ |
2● |
5● |
4● |
+ |
V |
eo |
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V |
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A |
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R1 |
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R1 |
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~ |
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A Iq 1kΩ |
V |
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RL |
VIN |
VC |
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RL |
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1kΩ |
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f=120Hz (sine wave) |
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R2 |
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R2 |
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ei=0.5Vrms |
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VO=Vref X |
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IO=0.3A |
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1+- = 1.25 X 1+- |
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R1 |
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R1 |
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RR=20 log (ei/eo) |
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VIN=5V |
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[R1=390Ω,Vref = 1.25V] |
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VO=3V (R1=1kΩ) |
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Fig.3 Power Dissipation vs. Ambient |
Fig.4 Overcurrent Protection |
Temperature |
Characteristics(Typical Value) |
10 |
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PD:With infinite heat sink |
4 |
Ta =25˚C |
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PD |
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VO=3V(R1=1kΩ,R2=1.4kΩ) |
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dissipationPowerPD (W) |
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3 |
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voltageOutputVO(V) |
Vi-O =0.5V |
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5 |
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2 |
Vi-O =1V |
Vi-O =5V |
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Vi-O =2V |
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1 |
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0 |
0 |
50 |
80 100 |
150 |
0 |
0.5 |
1.0 |
1.5 |
2.0 |
-20 |
0 |
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Ambient temperature Ta (˚C) |
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Output current IO (A) |
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Note) Oblique line portion:Overheat protection may operate in this area.
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