XB1085Series
ETR0324-006
■GENERAL DESCRIPTION
The XB1085 is a series of low dropout positive voltage regulators with a high output current capacity of 3.0A .
Stable output can be maintained by using 10μF (CIN) and 22μF (CL) of tantalum capacitors.
The fixed voltage types (XB1085P series) are available in 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V. The voltage adjustable type
(XB1085K series) is also available which can set the output voltage with only two external resistors.
With an overcurrent and thermal protection circuit built-in, the IC is disabled for protection when an output current reaches
limit current or junction temperature increases up to limit temperature.
The XB1085 series is available in TO-252 package.
■FEATURES
Maximum Output Current
■APPLICATIONS
● High efficiency linear regulators
● Battery chargers
: More than 3.0A (within Pd)
Maximum Operating Voltage : 12V
Output Voltage
: 1.5V, 1.8V, 2.5V, 3.3V,
● DVD drives
5.0V, (XB1085P)
Externally Set
● Set top boxes
(XB1085K/ Reference
Voltage 1.25V (TYP.))
: ±1% ( Tj =25℃)
● Various battery drive equipment
Output Voltage Accuracy
Dropout Voltage
: 1.3V @ IOUT=3.0A (TYP.)
: 0.015% (TYP.) <ADJ>
: 0.1% (TYP.) <ADJ>
Line Regulation
Load Regulation
Reference Voltage Pin Current: Less than 120μA <ADJ>
Overcurrent Protection Circuit Built-In
Thermal Protection Circuit Built-In
Package
: TO-252
Environmentally Friendly
: EU RoHS Compliant
■TYPICAL PERFORMANCE
■TYPICAL APPLICATION CIRCUITS
CHARACTERISTICS
●Output Voltage vs. Output Current
XB1085P Series
VIN
VOUT
IOUT
XB1085P331
CL=22μF
CL=22uF
VIN
VIN=4.9V
VIN=4.9V
VSS
(Tantalum)
(Tantalum)
C =10(TμF ant),al),CL=22μF(Tntan l)
CIN=10INμF anta(Tlum CL=22μF (Ta alutam)
CIN=10μF
(Tantalum)
CIN=10uF
(Tantalum)
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
Ta=85℃
Ta=25℃
Ta=0℃
XB1085K Series
VOUT
VIN
IOUT
CL=22μF
CL=22uF
(Tantalum)
VIN
ADJ
R1
R2
0
600
1200
1800
Output Current: IOUT (mA)
2400
3000
(Tantalum)
CIN=10μF
CIN=10uF
(Tantalum)
(Tantalum)
VOUT=VREF×(1+R2/R1) + IADJ×R2
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