Texas Instruments PT5021A, PT5021C, PT5021J, PT5021N, PT5022A Datasheet
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For assistance or to order, call (800) 531-5782
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
42
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
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
Pin Function
1
V
in
2
GND
3
V
out
Standard Application
C2 = Optional ceramic (1-5µF)
C3 = Required Electrolytic (100µF)
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 communication circuit applications.
The Plus to Minus ISRs use a “BuckBoost” 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
V
IN
(+)
COM
PT5020
COM
V
OUT
(-)
C2
C3
Pin-Out Information
1
2
3
Pkg Style 100
Specifications
Characteristics
PT5020 SERIES
(Ta=25°C unless noted) Symbols Conditions Min Typ Max Units
Output Current I
o
Over Vin range Vo=-3.3V to 6.5V 0.25* — 1.0 A
V
o
=-9V 0.10* — 0.60 A
V
o
=-12V 0.10* — 0.50 A
Vo=-15V 0.10* — 0.30 A
Current Limit I
cl
Vin = 5V — 1.5 I
o max
—A
Inrush Current I
ir
Vin = +5V @ max I
o
— 1.0 — A
t
ir
On start up — 1.0 — mSec
Short Circuit Current I
sc
Vin = 5V — 2 I
o max
—A
Input Voltage Range V
in
Io = 0.1 to I
o max
4.75 — 7** V
Output Voltage Tolerance ∆V
o
Over Vin Range Io= I
max
— ±1.5 ±3 %V
o
Ta = -20°C to shutdown
Line Regulation Reg
line
Over Vin range — ±0.5 ±1 %V
o
Load Regulation Reg
load
I
min
≤ Io ≤ I
max
— ±0.5 ±1 %V
o
Vo Ripple/Noise V
n
Vin=5V, Io= I
max
—±2 ±5%V
o
Transient Response t
tr
25% load change — 500 — µSec
Vo over/undershoot — 3.0 5.0 %V
o
Efficiency η Vin=5V, Io=0.5 I
max
—75 —%
Switching Frequency ƒ
O
Over Io range Vo=3.3 to 8V 0.8 1 1.2 MHz
Vo ≥ 8 V 500 650 800 kHz
Absolute Maximum T
a
— -20 — +85 °C
Operating Temperature Range
Recommended Operating T
a
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 T
s
-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.
For assistance or to order, call (800) 531-5782
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://
www.powertrends.com
43
5V to 3.x Converters
5V Bus Products
DATA SHEETS
CHARACTERISTIC DATA
PT5022 (-5VDC) (See Note 1)
Efficiency vs Output Current
Ripple Voltage vs Output Current
Power Dissipation vs Output Current
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.
PT5024 (-12VDC) (See Note 1)
Efficiency vs Output Current
Ripple Voltage vs Output Current
Power Dissipation vs Output Current
Safe Operating Area (VIN=5V)
Safe Operating Area (VIN=5V)
CHARACTERISTIC DATA
PT5020 Series
Efficiency - %Ripple-(mV)PD-(Watts)
Iout-(Amps)
Iout-(Amps)
PD-(Watts)
40
50
60
70
80
90
100
0 0.1 0.2 0.3 0.4 0.5
7.0V
6.5V
6.0V
5.5V
5.0V
4.75V
Vin
Ripple-(mV)
Iout-(Amps)
Iout-(Amps)
Ambient Temperature - (C°)
Ambient Temperature - (C°)
Maximum Output Ciurrent - (Amps)Maximum Output Ciurrent - (Amps)
Iout-(Amps)Iout-(Amps)
0
0.5
1
1.5
2
0 0.1 0.2 0.3 0.4 0.5
4.75V
5.0V
5.5V
6.0V
6.5V
7.0V
Vin
0
20
40
60
80
100
120
140
160
0 0.1 0.2 0.3 0.4 0.5
4.75V
5.0V
5.5V
6.0V
6.5V
7.0V
Vin
40
50
60
70
80
90
100
0 0.2 0.4 0.6 0.8 1
7.0V
6.5V
6.0V
5.5V
5.0V
4.75V
Vin
0
0.5
1
1.5
2
2.5
0 0.2 0.4 0.6 0.8 1
4.75V
5.0V
5.5V
6.0V
6.5V
7.0V
Vin
0
20
40
60
80
100
0 0.2 0.4 0 .6 0 .8 1
4.75V
5.0V
5.5V
6.0V
6.5V
7.0V
Vin
Efficiency - %
20
30
40
50
60
70
80
90
0 0.2 0.4 0 .6 0.8 1
0 LFM
60 LFM
90 LFM
Airflow
20
30
40
50
60
70
80
90
0.0 0.1 0.2 0.3 0.4 0.5
90 LFM
60 LFM
0 LFM
Airflow
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