參數(shù)資料
型號： PT5031LT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.5 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PSMA3
封裝： PLASTIC, SIP-3
文件頁數(shù)： 1/37頁
文件大?。?/td> 947K
代理商： PT5031LT
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Ordering Information
PT5021
o = -3.3 Volts
PT5022
o = -5 Volts
PT5023
o = -9 Volts
PT5024
o = -12 Volts
PT5025
o = -15 Volts
PT5026
o = -5.2 Volts
PT5027
o = -8.0 Volts
PT5028
o = -6.5 Volts
PT5029
o = -5.5 Volts
PT5030
o = -6.0 Volts
PT5031
o = -1.7 Volts
Pin
Function
1
V
in
2
GND
3
V
out
Standard Application
C2 = Optional ceramic (1-5F)
C3 = Required Electrolytic (100F)
PT Series Suffix (PT12345X)
Case/Pin
Configuration
Vertical Through-Hole
N
Horizontal Through-Hole
A
Horizontal Surface Mount
C
Input Voltage Range:
4.75 to 7 Volts
Complete Solution With Only
One External Capacitor Required
Soft Start
The Power Trends’ PT5020 ISRs
convert a positive input voltage (typ
+5V) to a negative output voltage for a
wide range of analog and communica-
tion circuit applications.
The Plus to Minus ISRs use a “Buck-
Boost” topology and are packaged in the
3 pin SIP configuration.
NOTE: Buck-Boost Topology ISRs are not Short-Circuit Protected.
Positive Input/Negative Output
Integrated Switching Regulator
PT5020 Series
VIN
(+)
COM
PT5020
COM
VOUT
(-)
C2
C3
Pin-Out Information
1
2
3
Pkg Style 100
Specifications
Characteristics
PT5020 SERIES
(T
a=25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
Vo= –1.7V to –6.5V 0.25*
—
1.0
A
Vo= –9V
0.10*
—
0.60
A
Vo= –12V
0.10*
—
0.50
A
Vo= –15V
0.10*
—
0.30
A
Current Limit
Icl
Vin = 5V
—
1.5 Io max
—A
Inrush Current
Iir
Vin = +5V @ max Io
—
1.0
—
A
tir
On start up
—
1.0
—
mSec
Short Circuit Current
Isc
Vin = 5V
—
2 Io max
—A
Input Voltage Range
Vin
Io = 0.1 to Io max
4.75
—
7**
V
Output Voltage Tolerance
Vo
Over Vin Range
Io= Imax
—
±1.5
±3
%V
o
Ta = -20°C to shutdown
Line Regulation
Regline
Over Vin range
—
±0.5
±1
%Vo
Load Regulation
Regload
Imin ≤ Io ≤ Imax
—
±0.5
±1
%Vo
Vo Ripple/Noise
Vn
Vin=5V, Io= Imax
—±2
±5
%Vo
Transient Response
ttr
25% load change
—
500
—
Sec
Vo over/undershoot
—
3.0
5.0
%Vo
Efficiency
η
Vin=5V, Io=0.5 Imax
—75
—
%
Switching Frequency
O
Over Io range
|Vo| =1.7 to 8V
0.8
1
1.2
MHz
|Vo| ≥8 V
500
650
800
kHz
Absolute Maximum
Ta
—
-20
—
+85
°C
Operating Temperature Range
Recommended Operating
Ta
Free Air Convection, (40-60 LFM)
-20
—
+65***
°C
Temperature Range
Over Vin and Io range
Thermal Resistance
θ
ja
Free Air Convection
—
50
—
°C/W
(40-60LFM)
Storage Temperature
Ts
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
500
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
—
5
—
G’s
20-2000 Hz, Soldered in a PC board
Weight
—
4.5
—
grams
* ISR will operate down to no load with reduced specifications.
** For applications with input voltages greater than 7 VDC, use the PT78NR100 Series.
*** See SOA Curves.
SLTS025A
(Revised 6/30/2000)
相關(guān)PDF資料
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