Texas Instruments PT5042N, PT5042S, PT5044A, PT5044C, PT5044N 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
44
Application Notes
Mechanical Outline
Product Selector Guide
Ordering Information
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
Pin-Out Information PT Series Suffix
(PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
N
Horizontal Through-Hole
A
Horizontal Surface Mount
C
Standard Application
C1 = Optional ceramic (1-5µF)
C2 = Optional ceramic (1-5µF)
C3 = Required Electrolytic (100µF)
V
IN
(+)
COM
PT5040
1
2
3
COM
V
OUT
(+)
C1
C2
C3
NOTE: Boost Topology ISRs are not Short-Circuit Protected.
• 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 additional regulated +8 to +20 volts with up
to 1A of output current. These ISRs
are packaged in the 3 pin SIP configuration.
1 AMP STEP-UP
INTEGRATED SWITCHING REGULATOR
PT5040 Series
Pin Function
1
V
in
2
GND
3 V
out
Pkg Style 100
Specifications
Characteristics
PT5040 SERIES
(Ta=25°C unless noted) Symbols Conditions Min Typ Max Units
Output Current I
o
Over Vin range Vo=20V 0.1* — 0.5 A
V
o
=18V 0.1* — 0.6 A
V
o
=12V 0.1* — 1.0 A
V
o
=15V 0.1* — 0.75 A
V
o
=8V 0.1* — 1.5 A
Vo=9V 0.1* — 1.25 A
Current Limit** I
cl
Vin = +5V — 1.5 Iomax — A
Inrush Current I
ir
Vin = +5V @ max I
o
— 2.5 — A
t
ir
On start up
—
1
—
mSec
Input Voltage Range V
in
Io = 0.1 to Iomax 4.75 — (V
o
-
1V) V
PT5047/5049 4.75 — 14 V
Output Voltage Tolerance ∆V
o
Over Vin Range
Io = I
max, Ta
= -20°C to shutdown — ±1.5 ±3.0 %V
o
Line Regulation Reg
line
Over Vin range — ±0.5 ±1.0 %V
o
Load Regulation Reg
load
0.1 ≤ Io ≤ Iomax — ±0.5 ±1.0 %V
o
Vo Ripple/Noise V
n
Vin= +5V, Io=Iomax —±2±5%V
o
Transient Response t
tr
25% load change — 500 — µSec
V
os
Vo over/undershoot — 3.0 5.0 %V
o
Efficiency η Vin= +5V, Io=0.5A, Vo= +12V — 85 — %
Switching Frequency ƒ
o
Over Vin and Io ranges Vo<15V 500 650 800 kHz
Vo>15V 650 800 950 kHz
Absolute Maximum
T
a — -20 — +85 °C
Operating Temperature Range
Recommended Operating T
a
Free Air Convection, (40-60LFM) Vo<15V -20 — 70*** °C
Temperature Range Over Vin and Io ranges Vo>15V -20 — 55*** °C
Thermal Resistance θ
ja
Free Air Convection — 40 — °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.
** Boost topology ISRs are not short circuit protected. *** See SOA Curves.
Revised 6/30/98
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
45
5V to 3.x Converters
5V Bus Products
DATA SHEETS
CHARACTERISTIC DATA
PT5041, +12.0 VDC (See Note 1) PT5042, +15.0 VDC (See Note 1)
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.
PT5040 Series
Efficiency vs Output Current
Ripple Voltage vs Output Current
Power Dissipation vs Output Current
Efficiency vs Output Current
Ripple Voltage vs Output Current
Power Dissipation vs Output Current
Safe Operating Area (VIN=5V)
Safe Operating Area (VIN=5V)
Efficiency - %Ripple-(mV)PD-(Watts)
Iout-(Amps)
Iout-(Amps)
PD-(Watts) Ripple-(mV)
Iout-(Amps)
Iout-(Amps)
Ambient Temperature - (C°)
Ambient Temperature - (C°)
Maximum Output Current - (Amps)Maximum Output Current - (Amps)
Iout-(Amps)Iout-(Amps)
40
50
60
70
80
90
100
0 0 .2 0.4 0 .6 0.8 1
11.0V
8.0V
6.0V
5.0V
Vin
0
0.5
1
1.5
2
2.5
0 0.2 0.4 0.6 0.8 1
5.0V
6.0V
8.0V
11.0V
Vin
0
50
100
150
200
250
0 0.2 0.4 0.6 0 .8 1
5.0V
6.0V
8.0V
11.0V
Vin
40
50
60
70
80
90
100
0 0.15 0.3 0.45 0.6 0.75
14.0V
12.0V
10.0V
8.0V
6.0V
5.0V
Vin
0
0.5
1
1.5
2
2.5
3
0 0.15 0.3 0.45 0.6 0.75
5.0V
6.0V
8.0V
10.0V
12.0V
14.0V
Vin
0
50
100
150
200
250
0 0.15 0.3 0.45 0 .6 0.75
5.0V
6.0V
8.0V
10.0V
12.0V
14.0V
Vin
Efficiency - %
20
30
40
50
60
70
80
90
0.00 0.25 0.50 0.75
0 LFM
60 LFM
90 LFM
Airflow
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
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