0.5 1 Amps
SR Series
•
•
•
•
•
•
•
Wide Input Range
DC DC
xppower.com
3 Pin SIP 3T Switching Regulator
Continuous Short circuit Protection
Pin Compatible with LM78MXX
Efficiency up to 97%
40 °C to +85 °C Operating Temperature
3 Year Warranty
Specification
Input
Input Voltage Range
• See table
Input Current
• See table
Input Reflected Ripple
• SR05: 35 mA pk-pk, SR10: 40 mA pk-pk,
through 12 µH inductor, 5 Hz to 20 MHz
Input Filter
• External capacitor (see application notes)
Input
Voltage
No Load
Input
Current
10
10
10
10
10
10
10
10
10
10
15
15
15
15
15
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Output
Voltage
Output
Current
Efficiency
(5)
64-79%
66-82%
72-87%
77-91%
83-94%
85-95%
86-95%
88-96%
91-96%
92-97%
71-78%
75-82%
80-87%
83-90%
88-93%
Model Number
Output
Output Voltage
Minimum Load
Line Regulation
Load Regulation
Setpoint Accuracy
Turn-on Time
Ripple & Noise
See table
No minimum load required
±0.5% max
±0.6% from 10% to 100% load
±2%
See note 6
60 mV pk-pk with 10% minimum load,
20 MHz bandwidth
• 220 µF
•
•
•
•
•
•
•
4.75-34
4.75-34
4.75-34
4.75-34
6.50-34
8.00-34
9.00-34
11.00-34
15.00-34
18.00-34
4.75-18
4.75-18
4.75-18
4.75-18
6.50-18
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
1.5
1.8
2.5
3.3
5.0
6.5
7.2
9.0
12.0
15.0
1.5
1.8
2.5
3.3
5.0
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
500
500
500
500
500
500
500
500
500
500
1000
1000
1000
1000
1000
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
SR05S1V5
SR05S1V8
SR05S2V5
SR05S3V3
SR05S05
SR05S6V5
SR05S7V2
SR05S09
SR05S12
SR05S15
SR10S1V5
SR10S1V8
SR10S2V5
SR10S3V3
SR10S05
Maximum Capacitive
Load
Short Circuit Protection
• Indefinite (automatic recovery)
Temperature Coefficient
• 0.02%/˚C
Mechanical Details
0.46
(11.68)
0.38
(9.65)
0.16
(4.10)
1
2
3
0.29
(7.50)
0.40
(10.16)
General
Efficiency
Isolation Voltage
Switching Frequency
Package Style
MTBF
•
•
•
•
•
See table
Non-isolated
330 kHz typical
3 pin SIP
>4.5 MHrs to MIL-HDBK-217F at 25 °C, GB
0.02
(0.50)
Printed
Face
0.10
(2.54)
0.08
(2.00)
0.29
(7.50)
0.02
(0.50)
0.02
(0.50)
0.20
(5.08)
Environmental
Operating Temperature
• SR05: -40 °C to +85 °C,
SR10: -40 °C to +60 °C,
Operating Humidity
• 95% RH
Case Temperature
• +100 °C max
Storage Temperature
• -40 °C to +125 °C
Cooling
• Convection-cooled
Notes
1. All dimensions in inches (mm)
2. Weight: 0.004 lbs (1.8 g)
3. Pin pitch tolerance: ±0.014 (±0.35)
4. Case tolerance: ±0.02 (±0.5)
5. Efficiency range given for maximum Vin to minimum Vin
6. For maximum reliability, ensure turn on time is >1 ms by placing a 47 µF
capacitor between +Vin and GND
0.01
(0.25)
Pin Connections
Pin
Function
1
+Vin
2
GND
3
+Vout
Application Notes
Input Filer to meet Class B Conducted Emissions
DC / DC Converter
+Vin
GND
C1
C2
Load
+Vout
L1
+
-
C1
470 µF, 35 V
L1
6.4 µH
C2
470 µF, 35 V
21-Jan-11
Microcontroller MCU
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