查询PT5071供应商
PT5071—12V
1.5 Amp, 12V Step-Up/Step-Down
Integrated Switching Regulator
Features
• Single-Device:
+12V Output, 7-16V Input
• 84% Efficiency
• 14-Pin Excalibur™ Package
• Output Current Limit
• Adjustable Output Voltage
• Adjustable Undervoltage Lockout
• Solderable Copper Case
Standard Application
UV
ADJ
V
IN
STBY
GND GND
C1, C2= Required 100µF electrolytic (See footnotes)
4-6 11-13
+
C
1
2
UVadj
V
PT5071
IN
GND
V0adj
STBY*
37-1014
V
V
OUT
+
C
2
OUT
Description
The PT5071 is a 1.5-ampere rated step-up/
step-down Integrated Switching Regulator
(ISR) that provides a tightly regulated 12V
output voltage from a 7V to 16V variable
input source. This high-performance ISR has
applications in systems where the input
voltage straddles the desired 12V output.
The regulator has an adjustable output
voltage and input start-up threshold, and a
standby function for power conservation.
Pin-Out Information
Pin Function
1 N/C
2 UVLO Adj
3 STBY*
4V
in
5V
in
6V
in
7 GND
8 GND
9 GND
10 GND
11 V
out
12 V
out
13 V
out
14 V
out
Adjust
SL TS139
(Revised 2/7/2001)
Ordering Information
PT5071¨ = +12 Volts
PT Series Suffix
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
(For dimensions and PC board layout,
see Package Styles 1360 and 1370.)
For Inhibit pin:
Open = output enabled
Ground = output disabled
(PT1234X)
N
A
C
Specifications
Characteristics
(Ta = 25°C unless noted) Symbols Conditions Min Typ Max Units
Output Current I
Current Limit I
Input Voltage Range V
Output Voltage Tolerance ∆V
o
lim
in
o
Over Vin Range 0.1
Vin = 12V — 4.0 A
0.1A ≤ Io ≤ I
Vin =12V, Io =Iomax ±1.0 %
–40°C ≤ Ta ≤ +85°C
max 7.0 — 16.0 V
o
Output Voltage Adjust Range Voadj 10 — 15 V
Line Regulation Reg
Load Regulation Reg
Vo Ripple/Noise V
Transient Response t
with C2 = 100µF V
line
load
n
tr
os
Efficiency η V
Switching Frequency ƒ
Absolute Maximum T
Operating Temperature Range
Storage Temperature T
o
a
s
Mechanical Shock Per Mil-STD-883D, Method 2002.3 , 1 msec, — TBD — G’s
Mechanical Vibration Per Mil-STD-883D, Method 2007.2,
Over Vin Range, Io =Iomax — ±0.5 %
V
=12V, 0.1 ≤ Io ≤ I
in
max — ±0.5 %
o
Vin =12V, Io =Iomax — ±2.0 ±3.0 %
Load step from 50% to 100% Iomax, Vin=12V — 200 — µSec
Vo over/undershoot — 1.0 — %V
=12V, Vo=12V, Io =1.5A — 83 — %
in
Over Vin Range — 550 — kHz
0.1A ≤ Io ≤ I
o
max
Over Vin range –40
— –40 — +125 °C
Half Sine, mounted to a fixture
20-2000 Hz, Soldered in a PC board — TBD — G’s
Weight — — — 25 — grams
Notes:
1. The regulator will operate down to no load with reduced specifications.
2. For operating temperatures below 0°C, it is recommended that tantalum capacitors be used at both the input and output.
3. See SOA curves, or contact the factory for derating guidelines.
Input/Output Capacitors:
(equivalent series resistance) of both capacitors must be less than 250m
The PT5071 regulator requires a 100µF electrolytic capacitor at the input and output for proper operation in all applications. The ESR
Ω
@100kHz. In addition, C1 and C2 must be rated to a minimum of 300mArms ripple current.
PT5071
(1)
—1.5A
(2)
—+85
(3)
o
°C
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT5071—12V
)
)
)
)
)
)
1.5 Amp, 12V Step-Up/Step-Down
Integrated Switching Regulator
T ypical Characteristics
PT5071 Performance, Vo =12V (See Note A)
Efficiency vs Output Current
90
80
70
Efficiency - %
60
50
0 0.3 0.6 0.9 1.2 1.5
Ripple vs Output Current
250
200
150
100
Ripple - mV
50
0
0 0.3 0.6 0.9 1.2 1.5
Iout (A
Iout (A
V
V
IN
7.0V
12.0V
16.0V
IN
7.0V
12.0V
16.0V
Safe Operating Area Curves (See Note B)
PT5071, Vin =7V
90.0
80.0
70.0
60.0
50.0
40.0
Ambient Temperature (°C)
30.0
20.0
0.0 0.3 0.6 0.9 1.2 1.5
PT5071, Vin =12V
90.0
80.0
70.0
60.0
50.0
40.0
Ambient Temperature (°C)
30.0
20.0
0.0 0.3 0.6 0.9 1.2 1.5
Iout (A
Iout (A
Airflow
200LFM
120LFM
60LFM
Nat conv
Airflow
200LFM
120LFM
60LFM
Nat conv
Power Dissipation vs Output Current
5
4
V
3
2
Pd - Watts
1
0
0 0.3 0.6 0.9 1.2 1.5
Note A: All Characteristic data in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.
Iout (A
IN
16.0V
12.0V
7.0V
PT5071, Vin =16V
90.0
80.0
70.0
60.0
50.0
40.0
Ambient Temperature (°C)
30.0
20.0
0.0 0.3 0.6 0.9 1.2 1.5
Iout (A
Airflow
200LFM
120LFM
60LFM
Nat conv
For technical support and more information, see inside back cover or visit www.ti.com/powertrendsFor technical support and more information, see inside back cover or visit www.ti.com/powertrendsFor technical support and more information, see inside back cover or visit www.ti.com/powertrends
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its products to the specifications applicable at the time of sale in accordance with
TI’s standard warranty . T esting 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.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
products or services might be or are used. TI’s publication of information regarding any third party’s products
or services does not constitute TI’s approval, license, warranty or endorsement thereof.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations and notices. Representation
or reproduction of this information with alteration voids all warranties provided for an associated TI product or
service, is an unfair and deceptive business practice, and TI is not responsible nor liable for any such use.
Resale of TI’s products or services with
that product or service voids all express and any implied warranties for the associated TI product or service,
is an unfair and deceptive business practice, and TI is not responsible nor liable for any such use.
Also see: Standard Terms and Conditions of Sale for Semiconductor Products.
Copyright 2001, Texas Instruments Incorporated
statements different from or beyond the parameters
www.ti.com/sc/docs/stdterms.htm
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
stated by TI for
Copyright © Each Manufacturing Company.
All Datasheets cannot be modified without permission.
This datasheet has been download from :
www.AllDataSheet.com
100% Free DataSheet Search Site.
Free Download.
No Register.
Fast Search System.
www.AllDataSheet.com
Loading...