XB1085 Datasheet, PDF (1/11 Pages) Torex Semiconductor – 3.0A Positive Voltage Regulator

ETR0324-005
˙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 10ЖF (CIN) and 22ЖF (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.
˙APPLICATIONS
˔ç High efficiency linear regulators
˔ç Battery chargersç
˔ç DVD drives
˔ç Set top boxes
˔ç Various battery drive equipment
˙FEATURES
Maximum Output Current : More than 3.0A (within Pd)
Maximum Operating Voltage : 12V
Output Voltage
: 1.5V, 1.8V, 2.5V, 3.3V,
5.0V, (XB1085P)
Externally Set
(XB1085K/ Reference
Voltage 1.25V (TYP.))
Output Voltage Accuracy
: ʶ1% ( Tj =25ˆ)
Dropout Voltage
: 1.3V @ IOUT=3.0A (TYP.)
Line Regulationç ç ç
: 0.015% (TYP.) <ADJ>
Load Regulationç ç ç
: 0.1% (TYP.) <ADJ>
Reference Voltage Pin Current: Less than 120ЖA <ADJ>
Overcurrent Protection Circuit Built-In
Thermal Protection Circuit Built-In
Package
: TO-252
˙TYPICAL APPLICATION CIRCUITS ˙TYPICAL PERFORMANCE
CHARACTERISTICS
ç
XB1085P Series
˔Output Voltage vs. Output Current
ç
VIN
VOUT
IOUT
VIN
VSS
CCININ=1=01Ж0FuF
(Tantalum)
(C^C(T_T^LLa_a⁼⁼n_n^2t2ta2_a2l^Жu_luum^FmF)₎
3.50
XB1085P331
VVININ==44..99VV
CIN=C10INЖ=F10(TμanFta(Tluamnt),alC),LC=L2=22Ж2Fμ(TFa(Tntaanlutaml))
3.00
2.50
2.00
1.50
Ta=85℃
XB1085K Series
VIN
VOUT
1.00
IOUT
0.50
Ta=25℃
Ta=0℃
VIN
ADJ
CCININ=1=01Ж0FuF
(Tantalum)
R1
C_CL_L=₌2₂2₂Ж_uFF
(T_(Tan_at_na_tl_au_lm_um) ₎
0.00
0
600 1200 1800 2400 3000
Output Current: IOUT (mA)
R2
VOUT=VREF×(1+R2/R1) + IADJ×R2
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