Low Power-Loss Voltage Regulators
PQ30VB11
PQ30VB11
Variable Output Low Power-Loss Voltage Regulator(Built-in Overheat Shut-Down Function)
■
■
Features
Compact resin full-mold package
● Low power-loss(Dropout voltage: MAX. 0.5V)
● Overheat shut-down function(keep shut-down output until
power-on again)
● Variable output voltage(Setting range: 1.5 to 30V)
● Overcurrent protection type
● High-precision output type
(Reference voltage precision: ±2.0%)
(Unit : mm)
Outline Dimensions
●
29.1MAX
PQ30VB11
4.8MAX
15.6±0.5
7.4±0.2
3.6±0.2
2.8±0.2
ø3.2±0.1
4–1.4 +0.3
–0
13.5MIN
■
4.5±0.2
10.2MAX
4–0.6 +0.2
–0.1
(1.5)
Applications
Series power supply for TVs and VCRs
● Switching power supply
●
(0.5)
3–(2.54)
➀➁➂➃
Internal connection diagram
➀
➁
Specific IC
➃
➂
■
Absolute Maximum Ratings
Parameter
❇1
❇1
❇2
❇3
❇1
❇2
❇3
Input voltage
Output adjustment terminal voltage
Output current
Power dissipation(No heat sink)
Power dissipation(With infinite heat sink)
Junction temperature
Operating temperature
Storage temperature
Soldering temperature
➀
➁
➂
➃
DC input(VIN)
DC output(VO)
GND
Output voltage
minute adjustment terminal(VADJ)
(Ta=25˚C)
Symbol
VIN
VADJ
IO
PD1
PD2
Tj
Topr
Tatg
Tsol
Rating
35
7
1
1.25
12.5
150
–20 to +80
–40 to +150
260
Unit
V
V
A
W
W
˚C
˚C
˚C
˚C
All are open except GND and applicable terminals.
Overheat shut-down function operates at Tj>=110˚C.
For 10s
•Please refer to the chapter " Handling Precautions ".
Notice
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 device specification sheets before using any SHARP device.
Internet Internet address for Electronic Components Group http://sharp-world.com/ecg/
Low Power-Loss Voltage Regulators
Electrical Characteristics
(Unless otherwise specified, condition shall be VIN=15V, Vo=10V, Io=0.5A, R1=390Ω, Ta=25˚C)
Parameter
Input voltage
Output voltage
Load regulation
Line regulation
Ripple rejection
Reference voltage
Temperature coefficient of reference voltage
Dropout voltage
Quiescent current
Overheat shut-down temperature
Conditions
−
−
IO=5mA to 1A
VIN=11 to 28V
Refer to Fig. 2
MIN.
4.5
1.5
−
−
45
1.225
−
−
−
110
Tj=0 to 125˚C, IO=5mA
❇4, IO=0.5A
IO=0
TYP.
−
−
0.3
0.5
55
1.25
±1.0
−
−
130
MAX.
35
30
1.0
2.5
−
1.275
−
0.5
7
150
Unit
V
V
%
%
dB
V
%
V
mA
˚C
Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
Fig. 1 Test Circuit
VIN
1
47µF
2
R2
3
0.33µF
A
4
VO
IO
A
+
R1
Iq 390Ω
VO=Vref ×
V
Vref
[R1=390Ω,Vref Nearly=1.25V]
RL
V
R2
1+ –––––
R1
Fig. 2 Test Circuit of Ripple Rejection
1
47µF
2
ei
R2
3
VIN
0.33µF
+
IO
+
4
R1
390Ω
V eo
IO=0.5A
f=120Hz(sine wave)
ei(rms)=0.5V
RR=20 log(ei(rms)/eo(rms))
RL
Fig. 3 Power Dissipation vs. Ambient
Temperature
Fig. 4 Overcurrent Protection
Characteristics(Typical Value)
PD1 : No heat sink
PD2 : With infinite heat sink
13
12
PD2
11
10
9
8
7
6
5
4
3
2
PD1
1
0
–20 0
50
100
150
Ambient temperature Ta (˚C)
Note) Oblique line portion : Overheat protection may operate in this area.
Power dissipation PD (W)
❇4
Symbol
VIN
VO
RegL
RegI
RR
Vref
TcVref
Vi-O
Iq
Tsd
100
Relative output voltage (%)
■
PQ30VB11
80
60
40
20
0
0.5
1.0
1.5
Output current IO (A)
2.0
Low Power-Loss Voltage Regulators
Fig. 5 Output Voltage Adjustment
Characteristics
PQ30VB11
Fig. 6 Output Voltage vs. Input Voltage
30
25
9
Output voltage VO (V)
Output voltage VO (V)
10
R1=390Ω
20
15
10
5
0
0.01
0.1
1
8
7
4
3
2
1
1 2 3 4 5 6 7 8 9 10 11 12
Input voltage VIN (V)
Fig. 8 Circuit Operating Current vs. Input
Voltage
40
Circuit operating current IBIAS (mA)
0.5
0.45
Dropout voltage Vi–O (V)
0.4
IO=1A
0.3
0.75A
0.25
0.2
0.5A
0.15
0.1
0.25A
0.05
0
–25
0
25
50
75
100
Junction temperature Tj (˚C)
125
Fig. 9 Output Peak Current vs. Junction
Temperature
Output peak current IOP (A)
2.2
2
1.8
VIN–VO=5V
2V
1V
1.6
0.5V
1.4
IOP:Output current when output voltage
1.2 is 95% in comparison with the initial value
–25
0
25
50
75
100
Junction temperature Tj (˚C)
RL=10Ω
6
5
R2 (kΩ)
0.35
RL=∞Ω
RL=20Ω
0
10
Fig. 7 Dropout Voltage vs. Junction
Temperature
Tj=25˚C
VO=10V
R1=390Ω
R2=2710Ω
125
35
30
Tj=25˚C
VO=10V
R1=390Ω
R2=2710Ω
25
20
RL=10Ω
15
RL=20Ω
10
RL=∞Ω
5
0
1 2 3 4 5 6 7 8 9 10 1112 1314 15
Input voltage VIN (V)
Low Power-Loss Voltage Regulators
■
PQ30VB11
Overheat Shut-down Characteristics
ON
VIN
OFF
❇Tsd
Tj
VO
❇ Tsd : Overheat shut-down temperature(Tj>=110˚C)
1 Overheat shut-down operates at Tj=Tsd and output OFF-state is maintained.
2 OFF-state is kept until VIN is once turned off.
■
ON/OFF Operation
D1
VIN
1
D2
4
R1
+
3
VADJ
R2
VO
2
R2
CIN
D2
VADJ
R1
R3
CO
RL
RD
RL
VO'
VC
High : Output OFF
Low : Output ON
Equivalent Circuit
in OFF-state
ON/OFF operation is available by mounting externally D2 and R3.
When VADJ is forcibly raised above Vref(1.25V TYP)by applying the external signal, the output is turned off(pass transistor of
regulator is turned off). When the output is OFF, VADJ must be higher then Vref MAX., and at the same time must be lower
than maximum rating 7V.
In OFF-state, the load current flows to RL from VADJ through R2. Therefore the value of R2 must be as high as possible.
● Following voltage is applied to the load at OFF-state.
VO'=VADJ✕RL/(RL+R2)(Refer to the above right figure.)
occurs at the load. OFF-state equivalent circuit R1 up to 10kΩ is allowed. Select as high value of RL and R2 as possible in this
range. In some case, as output voltage is getting lower(VO<1V), impedance of load resistance rises. In such condition, it is
sometime impossible to obtain the minimum value of VO'.So add the dummy resistance indicated by RD in the figure to the
circuit parallel to the load.
●
●
NOTICE
●
The circuit application examples in this publication are provided to explain representative applications of SHARP
devices and are not intended to guarantee any circuit design or license any intellectual property rights. SHARP takes
no responsibility for any problems related to any intellectual property right of a third party resulting from the use of
SHARP's devices.
●
Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device. SHARP
reserves the right to make changes in the specifications, characteristics, data, materials, structure, and other contents
described herein at any time without notice in order to improve design or reliability. Manufacturing locations are
also subject to change without notice.
●
Observe the following points when using any devices in this publication. SHARP takes no responsibility for damage
caused by improper use of the devices which does not meet the conditions and absolute maximum ratings to be used
specified in the relevant specification sheet nor meet the following conditions:
(i) The devices in this publication are designed for use in general electronic equipment designs such as:
- - - Personal computers
- -- Office automation equipment
- -- Telecommunication equipment [terminal]
- - - Test and measurement equipment
- - - Industrial control
- -- Audio visual equipment
- -- Consumer electronics
(ii) Measures such as fail-safe function and redundant design should be taken to ensure reliability and safety when
SHARP devices are used for or in connection with equipment that requires higher reliability such as:
- -- Transportation control and safety equipment (i.e., aircraft, trains, automobiles, etc.)
- - - Traffic signals
- - - Gas leakage sensor breakers
- - - Alarm equipment
- -- Various safety devices, etc.
(iii)SHARP devices shall not be used for or in connection with equipment that requires an extremely high level of
reliability and safety such as:
- - - Space applications
- -- Telecommunication equipment [trunk lines]
- -- Nuclear power control equipment
- -- Medical and other life support equipment (e.g., scuba).
●
Contact a SHARP representative in advance when intending to use SHARP devices for any "specific" applications
other than those recommended by SHARP or when it is unclear which category mentioned above controls the
intended use.
●
If the SHARP devices listed in this publication fall within the scope of strategic products described in the Foreign
Exchange and Foreign Trade Control Law of Japan, it is necessary to obtain approval to export such SHARP devices.
●
This publication is the proprietary product of SHARP and is copyrighted, with all rights reserved. Under the copyright
laws, no part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, for any purpose, in whole or in part, without the express written permission of SHARP. Express written
permission is also required before any use of this publication may be made by a third party.
●
Contact and consult with a SHARP representative if there are any questions about the contents of this publication.