PT5048 [TI]
1 AMP STEP-UP INTEGRATED SWITCHING REGULATOR; 1 AMP STEP- UP集成开关稳压器
| 型号： | PT5048 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 1 AMP STEP-UP INTEGRATED SWITCHING REGULATOR |
| 文件： | 总3页 (文件大小：205K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Application Notes
Mechanical Outline
For assistance or to order, call (800) 531-5782
Product Selector Guide
P T 5 0 4 0 S e r i e s
1 AMP STEP-UP
INTEGRATED SWITCHING REGULATOR
Revised 6/30/98
• Wide Input Voltage Range
• 85% Efficiency
• Internal Over-Temperature
Protection
• Laser-trimmed Output Voltage
• Soft Start
The Power Trends’ PT5040 Series
is a 3-terminal Integrated Switching
Regulator (ISR) designed for use with
+5 volt systems that require an addi-
tional regulated +8 to +20 volts with up
to 1A of output current. These ISRs
are packaged in the 3 pin SIP configu-
ration.
Pin-Out Information
Ordering Information
PT Series Suffix
(PT1234X)
Pin
1
Function
Vin
PT5041o = +12 Volts
PT5042o = +15 Volts
PT5044o = +8 Volts
PT5045o = +9 Volts
PT5046o = +10 Volts
PT5047o = +18 Volts
PT5048o = +12.6 Volts
PT5049o = +20 Volts
Case/Pin
Configuration
N
A
C
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
GND
Standard Application
2
3
Vout
1
3
V
(+)
IN
VOUT
(+)
PT5040
2
C1
C2
C3
Pkg Style 100
COM
COM
C1 = Optional ceramic (1-5µF)
C2 = Optional ceramic (1-5µF)
C3 = Required Electrolytic (100µF)
NOTE: Boost Topology ISRs are not Short-Circuit Protected.
Specifications
PT5040 SERIES
Characteristics
(Ta=25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
Vo=20V
Vo=18V
Vo=12V
Vo=15V
Vo=8V
0.1*
0.1*
0.1*
0.1*
0.1*
0.1*
—
—
—
—
—
—
0.5
A
A
A
A
A
A
0.6
1.0
0.75
1.5
Vo=9V
1.25
Current Limit**
Inrush Current
Icl
Vin = +5V
Vin = +5V @ max Io
On start up
—
1.5 Iomax
2.5
1
—
A
A
mSec
Iir
—
—
tir
—
—
-
Input Voltage Range
Vin
Io = 0.1 to Iomax
Over Vin Range
4.75
4.75
—
—
(Vo 1V)
V
V
PT5047/5049
14
Output Voltage Tolerance
∆Vo
Io = Imax, Ta= -20°C to shutdown
Over Vin range
—
—
—
—
±1.5
±0.5
±0.5
±2
±3.0
±1.0
±1.0
±5
%Vo
%Vo
%Vo
%Vo
Line Regulation
Load Regulation
Vo Ripple/Noise
Transient Response
Regline
Regload
Vn
0.1 ≤ Io ≤ Iomax
Vin= +5V, Io=Iomax
ttr
25% load change
—
—
500
3.0
—
µSec
%Vo
Vos
Vo over/undershoot
5.0
Efficiency
η
Vin= +5V, Io=0.5A, Vo= +12V
—
85
—
%
Switching Frequency
ƒo
Over Vin and Io ranges
Vo<15V
Vo>15V
500
650
650
800
800
950
kHz
kHz
Absolute Maximum
Ta
Ta
θja
Ts
—
-20
—
+85
°C
Operating Temperature Range
Recommended Operating
Temperature Range
Free Air Convection, (40-60LFM) Vo<15V
Over Vin and Io ranges
-20
-20
—
—
70***
55***
°C
°C
Vo>15V
Thermal Resistance
Free Air Convection
(40-60LFM)
—
40
—
°C/W
Storage Temperature
Mechanical Shock
-40
—
+125
°C
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
—
—
500
5
—
—
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC Board
G’s
Weight
4.5
grams
* ISR will operate down to no load with reduced specifications.
** Boost topology ISRs are not short circuit protected.
*** See SOA Curves.
44
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
For assistance or to order, call (800) 531-5782
P T 5 0 4 0 S e r i e s
C H A R A C T E R I S T I C
D A T A
PT5041, +12.0 VDC
(See Note 1)
PT5042, +15.0 VDC
(See Note 1)
Efficiency vs Output Current
Efficiency vs Output Current
100
90
80
70
60
50
40
100
90
80
70
60
50
40
Vin
11.0V
Vin
14.0V
12.0V
10.0V
8.0V
8.0V
6.0V
5.0V
6.0V
5.0V
0
0.15
0.3
0.45
0.6
0.75
0
0.2
0.4
0.6
0.8
1
Iout-(Amps)
Iout-(Amps)
Ripple Voltage vs Output Current
Ripple Voltage vs Output Current
250
200
150
100
50
250
200
150
100
50
V in
Vin
5.0V
6.0V
8.0V
11.0V
5.0V
6.0V
8.0V
10.0V
12.0V
14.0V
0
0
0
0.2
0.4
0.6
0.8
1
0
0.15
0.3
0.45
0.6
0.75
Iout-(Amps)
Iout-(Amps)
Power Dissipation vs Output Current
Power Dissipation vs Output Current
2.5
2
3
2.5
2
Vin
Vin
5.0V
6.0V
8.0V
10.0V
12.0V
14.0V
1.5
1
5.0V
6.0V
8.0V
11.0V
1.5
1
0.5
0
0.5
0
0
0.2
0.4
0.6
0.8
1
0
0.15
0.3
0.45
0.6
0.75
Iout-(Amps)
Iout-(Amps)
Safe Operating Area (VIN=5V)
Safe Operating Area (VIN=5V)
90
80
70
60
50
40
30
20
90
80
70
60
50
40
30
20
Airflow
0 LFM
Airflow
0
LFM
60 LFM
90 LFM
60 LFM
90 LFM
0
0.2
0.4
0.6
0.8
1
0.00
0.25
0.50
0.75
Maximum Output Current - (Amps)
Maximum Output Current - (Amps)
Note 1: All data listed in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
45
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
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In order to minimize risks associated with the customer’s applications, adequate design and operating
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TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
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Copyright 1999, Texas Instruments Incorporated
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