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Block Diagram
Absolute Maximum Ratings
Symbol
Parameter
Range
Units
VCC
VCC Pin Voltage
VSS-0.3 to VSS+22
V
VFB
VEN
Feedback Pin Voltage
EN Pin Voltage
VSS-0.3 to VCC
VSS-0.3 to VIN+0.3
VSS-0.3 to VIN+0.3
Internally limited
-20 to +125
V
V
VOUTPUT
PD
Switch Pin Voltage
V
Power Dissipation
mW
oC
oC
TOPR
TSTG
Operating Temperature Range
Storage Temperature Range
-40 to +150
Electrical Characteristics (VIN = 12V, Ta=25°C, unless otherwise specified)
Symbol
VIN
Parameter
Input Voltage
Conditions
Min.
Typ.
-
Max.
Unit
V
-
3.6
0.782
-
20
0.818
0.5
-
VFB
Feedback Voltage
IOUT=0.1A
IOUT=0.1A
-
0.8
0.1
-
V
IFB
Feedback Bias Current
Switch Current
uA
A
ISW
4.5
Current Consumption During Power
Off
ISSS
VEN=0V
-
10
-
uA
ΔVOUT/VOUT
ΔVOUT/VOUT
FOSC
VIN=5V～18V
Line Regulation
-
-
2
4
%
%
Load Regulation
I
OUT=0.1 to 4A
0.2
350
0.5
400
Oscillation Frequency
Frequency of Current Limit or Short
Circuit Protect
Measure waveform at SW pin
300
KHz
FOSC1
Measure waveform at SW pin
10
-
-
KHz
V
VSH
VSL
Evaluate oscillation at SW pin
2.0
-
-
-
0.8
-
EN Pin Input Voltage
Evaluate oscillation stop at SW pin
-
-
ISH
-
-
-
20
-10
90
uA
uA
uA
EN Pin Input Leakage Current
ISL
-
-
IOCSET
OCSET Pin Bias Current
Soft-Start Time
75
105
TSS
-
0.3
-
2
5
ms
VIN=5V，VFB=0V
VIN=12V，VFB=0V
110
70
150
100
-
mΩ
RDSON
Internal MOSFET RDSON
VIN=12V，VOUT=5V，IOUT=4A
EFFI
Efficiency
-
-
90
%
Thermal Resistance
Junction-to-Ambient
-
65
-
oC/W
θJA
DS-RS6514-02
March, 2009
www.Orister.com
ORISTER [ ORISTER CORPORATION ]
