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RS6511-50SEP Datasheet(PDF) 4 Page - Orister Corporation

Part # RS6511-50SEP
Description  3A, 20V, 1.2MHz DC/DC Asynchronous Step?륞own Converter
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Manufacturer  ORISTER [Orister Corporation]
Direct Link  http://www.orister.com
Logo ORISTER - Orister Corporation

RS6511-50SEP Datasheet(HTML) 4 Page - Orister Corporation

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DS‐RS6511A‐05    February, 2010 
www.Orister.com
Electrical Characteristics (VIN=12V, TA=25°C, unless otherwise specified) 
Symbol 
Parameter 
Conditions 
Min. 
Typ. 
Max.
Unit
VIN 
Input Voltage ‐ 
4.75 ‐ 
20 
VFB 
Feedback Voltage 
4.75V ≤ VIN ≤ 20V 
1.19 
1.23 
1.26
RDS(ON)1 
Upper Switch On Resistance ‐ 
‐ 
0.22 ‐ 
Ω 
RDS(ON)2 
Lower Switch On Resistance ‐ 
‐ 
10 ‐ 
Ω 
ISw 
Upper Switch Leakage 
VEN = 0V, VSW = 0V ‐ 
‐ 
10 
uA 
ILIM 
Current Limit 
(NOTE 1) ‐ 
‐ 
4.5 ‐ 
GCS 
Current Sense Transconductance Output 
Current to Comp Pin Voltage 
‐ 
‐ 
1.95 ‐ 
A/V 
AVEA 
Error Amplifier Voltage Gain ‐ 
‐ 
400 ‐ 
V/V 
GEA 
Error Amplifier Transconductance ‐ 
550 
830 
1150
uA/V
FS 
Oscillator Frequency ‐ 
‐ 
1.2 ‐ 
MHz
FOSC1 
Short Circuit Frequency 
VFB = 0V ‐ 
240 ‐ 
KHz 
DMAX 
Maximum Duty Cycle 
VFB = 1.0V ‐ 
90 ‐ 
tON 
Minimum On Time ‐ 
‐ 
100 ‐ 
ns 
‐ 
EN Shutdown Threshold 
ICC>100uA 
0.7 
1.0 
1.3 
‐ 
Enable Pull Up Current 
VEN = 0V ‐ 
1.0 ‐ 
uA 
‐ 
EN UVLO Threshold Rising 
VIN Rising 
2.35 
2.50 
2.65
‐ 
EN UVLO Threshold Hysteresis ‐ 
‐ 
200 ‐ 
mV 
ISD 
Supply Current (Shutdown) 
VIN ≤0.4V ‐ 
23 
36 
uA 
IQ 
Supply Current (Quiescent) 
VEN ≥3V ‐ 
1.1 
1.3 
mA 
TSD 
Thermal Shutdown ‐ 
‐ 
160 ‐ 
o
Notes: 
1.
Slope compensation changes current limit above 40% duty cycle. 
2.
Stresses  listed  as  the  above  "Absolute  Maximum  Ratings"  may  cause  permanent  damage  to  the  device.  These  are  for 
stress  ratings.  Functional  operation  of  the  device  at  these  or  any  other  conditions  beyond  those  indicated  in  the 
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended 
periods may remain possibility to affect device reliability. 
3.
Devices are ESD sensitive. Handling precaution is recommended. 
4.
The device is not guaranteed to function outside its operating conditions. 
5.
θJA is measured in the natural convection at TA = 25°C on a high effective four layers thermal conductivity test board of 
JEDEC 51‐7 thermal measurement standard. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


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