TEXAS INSTRUMENTS SLTS139 Technical data
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
Loading...