
DC-DC Switching Regulator
SR15-05 Series
www.powersolve.co.uk
15A SIP & SMT Packages
Non-Isolated
Features
• Non-Isolated POL Converter
• SIP / SMT Packages
• Output Current 15A
• Input Voltage Range 3.0 - 5.5VDC
• Output Voltage Range 0.9 - 3.63VDC
• Efficiency to 94%
• Over Temperature Protection
• Continuous Short Circuit Protection
• Remote On/Off Control
Electrical Specification
INPUT
Input Voltage Range 3.0 - 5.5V (Vo set < Vin - 0.5VDC)
Under Voltage Lock-out 2.8V typ. (Power Up)
Input Filter Capacitive
Remote On/Off Control Open Circuit or equal to Vin (Module On)
OUTPUT
Voltage Accuracy ±1.5% max.
Transient Response: 25% step load change <200µ sec.
Ripple and Noise (20MHz BW) [3] 20mV rms, 50mV pk-pk max.
Temperature Coefficient ±0.03% / °C
Short Circuit Protection Continuous
Line Regulation [1] ±0.2% (SR15-05-33TH)
Load Regulation [2] ±0.5%
Capacitive Load, Low ESR 10000µF max.
External Trim Adj. Range Vo = 0.9 - 3.63VDC
GENERAL
Efficiency See Table
Isolation Voltage Non-Isolated
Switching Frequency 300KHz typ.
Over Temperature Protection 120°C typ.
Operating Temperature Range -40°C to +85°C
Power Derating See derating curves
Storage Temperature Range -55°C to +125°C
Dimensions 50.8 x 12.7 x 8.5 mm (2.00 x 0.50 x 0.327 Inches) (SIP Package)
Case Non-potted open frame type
Weight 6.8g
NOTE:
1. Measured from High Line to Low Line (Vo set to 1.8VDC).
2. Measured from Full Load to No Load (Vo set to 3.3VDC).
3. Output noise & ripple is measured with a 10µF tantalum & 1µF ceramic capacitor across the output.
4. It is recommended to put a 100µF capacitor with ESR<20mΩ across the input to reduce the input ripple voltage.
5. Suffix ‘N’ to model number for Negative Logic Remote On/Off Control.
2.7V typ. (Power Down)
<0.4VDC (Module Off)
±0.4% (SR15-05-33SM)
33.0 x 13.46 x 9.3 mm (1.30 x 0.53 x 0.366 Inches) (SMT Package)
Typical at nominal line, full load & 25°C unless otherwise stated.
Powersolve Electronics Ltd. 8A Arnhem Road, Newbury, RG14 5RU. England
Tel: 01635 521858 Fax: 01635 523771 Email: sales@powersolve.co.uk

DC-DC Switching Regulator
www.powersolve.co.uk
Output Voltage and Current Ratings
MODEL INPUT OUTPUT OUTPUT INPUT CURRENT % EFF.
SR15-05-33TH 3.0 - 5.5VDC 1.2V 15A 60mA 4286mA 84%
(SIP Package) 3.0 - 5.5VDC 1.5V 15A 60mA 5172mA 87%
SR15-05-33SM 3.0 - 5.5VDC 2.0V 15A 70mA 6742mA 89%
(SMT Package) 3.0 - 5.5VDC 2.5V 15A 70mA 8152mA 92%
Nominal Input Voltage 5.0VDC.
VOLTAGE VOLTAGE CURRENT No Load Full Load
3.0 - 5.5VDC 1.0V 15A 60mA 3658mA 82%
3.0 - 5.5VDC 1.8V 15A 70mA 6136mA 88%
4.5 - 5.5VDC 3.3V 15A 70mA 10532mA 94%
External Resistor Values for
Programming Output Voltage
Vo set (V) Rtrim (KΩ)
0.90 135.36
1.00 79.17
1.20 41.71
1.50 22.98
1.80 14.96
2.00 11.75
2.50 6.93
3.30 3.15
3.63 2.20
Simplified Schematic
Mechanical and Connection Details
SIP Packages
SR15-05-33SM Derating CurveSR15-05-33TH Derating Curve
All Dimensions in Inches (mm).
Tolerance: Inches x.xx ±0.02 x.xxx ±0.010
Millimeters x.x ±0.5 x.xx ±0.25
SMT Packages
BOTTOM VIEW OF BOARD
Pin Function
1 +Vout
2 +Vout
3 +Sense
4 +Vout
5 Common
6 Common
7 +Vin
8 +Vin
9 No Pin
10 Trim
11 On/Off Control
Powersolve Electronics Ltd. 8A Arnhem Road, Newbury, RG14 5RU. England
Tel: 01635 521858 Fax: 01635 523771 Email: sales@powersolve.co.uk