
H
1
Rev. April 5, 2001
Powering Communications and Technology
SIP502.5
76
78
80
82
84
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88
90
10
20
30
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50
60
70
80
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100
LOAD %
E
EFF. (4.5v)
EFF. (5v)
EFF. (5.5v)
SIP/SIE 500 
NON-ISOLATED SERIES
SIP/SIE non-isolated step-down DC/DC converters
deliver high efficiency and excellent transient response in
an industry standard SIP package.  The SIP/SIE series
has output voltages ranging from 1.2 to 3.3V and up to 6
amps of output current.  The SIE model has power OK
and remote sense pins for added flexibility and improved
point of load regulation.  The SIP/SIE series is available
for vertical or horizontal mounting.  The SIP/SIE series
use 100% surface-mount construction for maximum
reliability and feature over seven million hours MTBF.    
 Non-Isolated
 High Efficiency
Topology
 Excellent Transient
Response
 Sense and Power OK
(SIE Model Only)
DESCRIPTION
FEATURES
 Surface-Mount
Construction
 Voltage Trim
 Vertical or Horizontal
Mounting
 Water Washable
Remote Shutdown
Switching Frequency
Temperature Coefficient
Ambient Operating Temperature
Minimum Required Airflow
Storage Range
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
MTBF(Bellcore TR-NWT-000332)
Safety
Weight (approx.)
Negative Logic
350 KHz
0.03% /°C
0 to +55°C 
200 LFM
-25 to +120°C
95%
5 g, 10 - 55 Hz
7.1 x 106 hrs
UL, cUL, TUV
0.25 oz
Efficiency vs. Load
Setpoint Accuracy
Line Regulation VinMin. - VinMax., IoutRated                         1% Vout
Load Regulation IoutMin.- IoutMax., VinNom.                         1% Vout 
Ripple and Noise, DC - 20 MHz
Remote Sense Headroom
Current Limit Protection Type 
Current Limit Threshold Range, % of IoutRated
Short Circuit Protection Type
±1%  
50 mV Pk-Pk
0.25 V
Hiccup
150%
Latching
Power Good Signal (SIE model only); 
Asserts “High” When Voutis Between the Following Thresholds:
Lower Sense Threshold, % Vsetpoint
Upper Sense Threshold, % Vsetpoint
Power Good Signal Reference
Vout Ramp Up Rate, Minimum
-16% to -10%
+10% to +16%
Common Ground
0.5V/ms
Notes
MTBF predictions may vary slightly from model to model.
Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully 
compatible with  commercial wave-soldering equipment.
Safety:  Agency approvals may vary from model to model.  Please
consult factory for specific model information.
Units are water-washable and fully compatible with commercial
spray or immersion post wave-solder washing equipment.
TECHNICAL SPECIFICATIONS
Voltage Range
5 VDC Nominal
4.5 - 5.5 VDC  
Input
Output
General