ETR0324-005b
■GENERAL DESCRIPTIO N
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 (C
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 disabl ed for protectio n 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
● High efficiency linear regulators
● Battery chargers
● DVD drives
● Set top boxes
● Various battery drive equi pment
■TYPICAL APPLICATION CIRCUITS
VIN
CIN=10μF
CIN=10uF
(Tantalum)
(Tantalum)
XB1085P Series
VIN VOUT
VSS
VIN
CIN=10μF
CIN=10uF
(Tantalum)
XB1085K Series
VIN VOUT
ADJ
(Tantalum)
VOUT=VREF×(1+R2/R1) + IADJ×R2
IN) and 22μF (CL) of tantalum capacitors.
■FEATURES
Maximum Output Current
Maximum Operating Voltage
Output Voltage
Externally Set
Output Voltage Accuracy
Dropout Voltage
Line Regulation
Load Regulation
Reference Voltage Pin Current
Overcurrent Protection Circuit Built-In
Thermal Protection Circuit Built-In
Package
Environmentally Friendly
■TYPICAL PERFORMANCE
CHARACTERISTICS
●Output Voltage vs. Output Current
IOUT
CL=22μF
CL=22uF
(Tantalum)
(Tantalum)
3.50
3.00
2.50
2.00
1.50
1.00
0.50
Output Voltage: VOUT(V)
0.00
0 600 1200 1800 2400 3000
Output Current: IOUT (mA)
R1
R2
IOUT
CL=22μF
CL=22uF
(Tantalum)
(Tantalum)
: More than 3.0A (within Pd)
: 12V
: 1.5V, 1.8V, 2.5V, 3.3V,
5.0V, (XB1085P)
(XB1085K/ Reference
Voltage 1.25V (TYP.))
: ±1% ( Tj =25℃)
: 1.3V @ I
OUT=3.0A (TYP.)
: 0.015% (TYP.) <ADJ>
: 0.1% (TYP.) <ADJ>
: Less than 120μA <ADJ>
: TO-252
: EU RoHS Compliant
XB1085P331
CIN=10μF (Tantalum), CL=22μF (Tantalum)
CIN=1 0μF(Tantal),CL= 22μF(Tan tal)
VIN=4.9V
VIN=4.9V
Ta=85℃
Ta=25℃
Ta=0℃
1/11
XB1085 Series
■PIN CONFIGURATION
VSS/ADJ
■PIN ASSIGNMENT
PIN NUMBER
TO-252
1 VSS / ADJ Ground / Reference Voltage
2 VOUT Output
3 VIN Input
■PRODUCT CLASSIFICATION
●Ordering Information
XB1085①②③④⑤⑥-⑦
DESIGNATOR DESCRIPTION SYNBOL DESCRIPTION
① Type of Regulators
②③④
Output Voltage and Output
⑤⑥-⑦
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
PIN NAME FUNCITONS
(*1)
Voltage Accuracy
Package
(Oder Unit)
VOUT
V
OUT
(Tab)
(Tab)
2
2
2
2
V
OUT
VOUT
1
13
/
V
SS
ADJ
3
V
VIN
IN
TO-252
(TOP VIEW)
P Fixed V
K Adjustable (Externally Set)
151 V
181 V
251 V
331 V
501 V
12B V
JR TO-252 (2,500/Reel)
JR-G TO-252 (2,500/Reel)
OUT
=1.5V (±1%)
OUT
=1.8V (±1%)
OUT
=2.5V (±1%)
OUT
=3.3V (±1%)
OUT
=5.0V (±1%)
OUT
=1.25V (±1%)
REF
2/11
A
■BLOCK DIAGRAM
■
BSOLUTE MAXIMUM RATINGS
*Diodes inside the circuit are ESD protection diodes.
Thermal
Protection
Current
Limit
Error
Amp
Bandgap
Reference
PARAMETER SYMBOL RATINGS UNIT
Input Voltage VIN 18 V
Power Dissipation
TO-252
Pd 1300
Operating Junction Temperature Tj 125
Storage Temperature Range
Note:
*1: Stresses greater than those listed above ratings may cause permanent damage to the device.
*2: The rating of the power dissipation is determined when mounted on the PCB.
Tstg - 55 ~ 125
VOUTVIN
VSS/
ADJ
(*2)
mW
℃
℃
XB1085
Series
3/11
XB1085 Series
■ELECTRICAL CHARACTERISTICS
XB1085PxxxJ
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT
V
OUT
(1.5V)
V
OUT
(1.8V)
V
2.475 2.5 2.525
Output Voltage
OUT
(2.5V)
V
3.267 3.3 3.333
OUT
(3.3V)
V
OUT
(5.0V)
⊿V
OUT1
(1.5V)
⊿V
OUT1
(1.8V)
⊿V
Line Regulation
OUT1
(2.5V) I
⊿V
OUT1
(3.3V) I
⊿V
OUT1
(5.0V)
⊿V
OUT2
(1.5V)
⊿V
OUT2
(1.8V)
⊿V
Load Regulation
OUT2
(2.5V) 0mA≦I
⊿V
OUT2
(3.3V) 0mA≦I
⊿V
OUT2
(5.0V)
Dropout Voltage Vdif ⊿V
Limit Current I
LIM
Supply Current IDD
Temperature Stability Ts
Note:
*1: O.T. denotes the specifications which apply over the operating junction Temperature range (0℃ ≦ Tj ≦125
Please be sure that the power consumption does not exceed the power dissipation rating 1300mW. If the power consumption exceeds
the power dissipation rating and the operating junction temperature rises more than the rating 125
state.
=4.5V, I
V
IN
V
=4.8V, I
IN
VIN=5.5V, I
VIN=6.3V, I
V
=8.0V, I
IN
3V≦VIN≦10V
=10mA
I
OUT
3.3V≦VIN≦10V
=10mA
I
OUT
OUT
OUT
OUT
OUT
OUT
=0mA
=0mA
=0mA
=0mA
=0mA
4V≦VIN≦10V - 0.5 6
=10mA O.T.
OUT
4.8V≦VIN≦10V - 0.5 6
=10mA O.T.
OUT
6.5V≦VIN≦10V
=10mA
I
OUT
V
0mA≦I
V
0mA≦I
VIN-V
VIN-V
V
0mA≦I
VIN-V
=3.0V
IN-VOUT
≦3.0A
OUT
=3.0V
IN-VOUT
≦3.0A
OUT
=3.0V - 3 15
OUT
≦3.0A O.T.
OUT
=3.0V - 3 15
OUT
≦3.0A O.T.
OUT
=3.0V
IN-VOUT
≦3.0A
OUT
OUT
=1%, I
OUT
=3.0V
=3.0A - 1.3 1.5 V ①
OUT
VIN=10V O.T.
VIN-V
I
OUT
=1.5V
OUT
=10mA
1.485 1.5 1.515
O.T.
(*1)
1.47 1.53
1.782 1.8 1.818
O.T.
O.T.
O.T.
(*1)
(*1)
(*1)
1.764 1.836
2.450 - 2.550
3.234 - 3.366
4.95 5 5.05
(*1)
O.T.
4.9 5.1
- 0.5 6
(*1)
O.T.
1 6
- 0.5 6
(*1)
1 6
O.T.
(*1)
1 6
(*1)
1 6
- 0.5 10
(*1)
O.T.
1 10
- 3 15
(*1)
O.T.
7 20
- 3 15
(*1)
O.T.
7 20
(*1)
7 20
(*1)
7 20
- 5 20
(*1)
O.T.
10 35
(*1)
(*1)
O.T.
- 0.5 - % -
Tj= 25℃ unless otherwise specified
V
V
V ①
V ①
V
mV ①
mV ①
mV ①
mV ①
mV ①
mV ①
mV ①
mV ①
mV ①
mV ①
3.2 4.5 - A ①
- 5 10 mA ②
O
C).
O
C, the IC enters thermal shutdown
①
①
①
4/11
XB1085
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XB1085K12BJ
Tj= 25℃ unless otherwise specified
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT
Reference Voltage VREF
Line Regulation ⊿VOUT1
Load Regulation ⊿VOUT2
VIN-VOUT=3.0V 1.238 1.25 1.262
OUT=10mA O.T.
I
(*1)
1.225 - 1.275
2.85V≦VIN≦10V - 0.015 0.2
IOUT=10mA O.T.
(*1)
0.035 0.2
VIN-VOUT=3.0V - 0.1 0.3
0mA≦IOUT≦3.0A O.T.
(*1)
0.2 0.4
V ①
% ①
% ①
Dropout Voltage Vdif ⊿VOUT=1%, IOUT=3.0A - 1.3 1.5 V ①
Limit Current ILIM
Temperature Stability Ts
Minimum
Output Current
Adjust Voltage Pin
Current
Note:
*1: O.T. denotes the specifications which apply over the operating junction Temperature range (0℃ ≦ Tj ≦125
Please be sure that the power consumption does not exceed the po wer dissipation rating, 1300mW. If the power consumption exceeds
the power dissipation rating and the operating junction temperature rises more than the rating, 125
state.
IOUTmin VIN=10V O.T.
IADJ VIN=4.25V, IOUT=10mA O.T.
VIN-VOUT=3.0V
VIN-VOUT=1.5V
OUT=10mA
I
O.T.
(*1)
(*1)
(*1)
3.2 4.5 - A ①
- 0.5 - % -
- 3 10 mA ①
- 55 120 μA ①
O
C).
O
C, the IC enters thermal shutdown
5/11
(
)
(
XB1085 Series
■TEST CIRCUITS
●XB1085PxxxJ
Circuit ①
Circuit ②
●XB1085K12BJ
Circuit ①
VIN
VIN
CIN
VIN
VIN
V
* C
IN=10μF
* C
VIN
A
VOUT
ADJ
IN=10μF
VOUT
VSS
A
V
Tantalum), CL=22μF (Tantalum
VIN
VOUT
VSS
V
100Ω
A
CL
↓
164Ω
※VOUT: 3.3V
*
Tantalum), CL=22μF (Tantalum)
CLCIN
↓
V
6/11
■TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage vs. Input Voltage
(1) Output Voltage vs. Output Current
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Output Voltage: VOUT(V)
0.0
(3) Dropout Voltage vs. Output Current
＾
(5) Reference Voltage
0 1000 2000 3000
1.2
1.0
0.8
0.6
0.4
0.2
Dro pout Voltage : Vdif （V)
0.0
0 500 1000 1500 2000 2500 3000
1.27
1.26
1.25
1.24
1.23
Reference Voltage: VREF （V)
1.22
0 102030405060708090
XB1085P331
CIN=10μF (Tantalum), CL=22μF (Tantalum)
CIN=1 0μF(Tantal ),CL= 22μF(Tan tal)
Output Current: IOUT (mA)
XB1085P331
CIN=10μF (Tantalum), CL=22μF (Tantalum)
CIN=10uF(Tantal）、CL=22uF(Tantal)
Output Current: IOUT (mA)
vs. Ambient Temperature
XB1085K12B （VOUT=3.3V)
CIN=10μF (Tantalum), CL=22μF (Tantalum)
CIN=10μF(Tantal),CL=22μF(Tantal)
Ambient Temperature: Ta (℃)
Ta=85℃
Ta=25℃
Ta=0℃
Ta=85℃
Ta=25℃
Ta=0℃
VIN=4.9V
VIN=4.9V
VIN=4.9V
VIN=4.9V
(2)
XB1085P331
CIN=10μF (Tantalum), CL=22μF (Tantalum)
3.5
CIN= 10μF(Tantal),CL=2 2 μF(Tan tal)
3.0
2.5
2.0
1.5
1.0
0.5
Output Voltage: VOUT(V)
0.0
0246 810
Su pply Voltage : VIN(V)
Input Voltage: VIN (V)
Ta=85℃
Ta=25℃
Ta=0℃
(4) Supply Current vs. Input Voltage
XB1085P331
CIN=10μF (Tantalum), CL=22μF (Tantalum)
6
5
4
3
2
1
Supply Current: ISS (mA)
0
0246810
(6)
Adjust Pin Current vs. Ambient Temperature
100
80
60
40
20
Adjust Pin Current: IADJ (μA）
0
0 102030405060708090
CIN=10uF(Tantal）、CL=22uF（Tantal）
Ta=85℃
Ta=25℃
Ta=0℃
Supply Voltage: VIN(V)
Input Voltage: VIN (V)
XB1085K12B (VOUT=3.3V)
XB1085K12B(VOUT=3.3V)
CIN=10μF (Tantalum), CL=22μF (Tantalum)
CIN=1 0μF(Tantal),CL= 22μF(Tan tal)
IOUT=10mA
IOUT＝10mA
VIN=4.25V
Ambient Temperature: Ta (℃)
IOUT=10mA
IOUT=10mA
XB1085
Series
7/11
XB1085 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(7) Load Transient Response
12.0
10.5
9.0
7.5
6.0
4.5
3.0
1.5
Output Current: IOUT(A)
0.0
-1.5
(8)
Input Transient Response
11
10
9
8
7
6
Supply Voltage: VIN(V)
5
Ripple Rejection Rate
(9)
100
80
60
40
20
ripple rejection rate（ｄB)
0
Ripple Rejection Rate: PSRR (dB)
0.01 0.1 1 10 100
8/11
XB1085P331
CIN=CL=10μF (Tantalum)
CIN=CL=1 0μF(Tantal)
VOUT
3A
IOUT
0.1A
Time（100μs/DIV）
XB1085P331
IOUT=200mA
CIN=1μF (Tantalum), CL=10μF (Tantalum)
CIN=1μF(Tantal),CL=10μF(Tantal)
IOUT=200mA
VOUT
7.3V
VIN
5.3V
Time（200μs/DIV）
XB1085P331
VIN=6.3VDC+1.0Vp-pAC
IOUT=1A、Ta=25℃、CL=25uF(Tantal)
IOUT=1A, Ta= 25℃, CL=25μF (Tantalum)
0.1 1 10
ripple rejection rate（kHz)
Ripple Frequency: f (kHz)
VIN=6.3VDC+ 1.0Vp-pAC
VIN=6.3V
VIN=6.3V
4.0
3.0
2.0
1.0
0.0
3.32
3.30
3.28
3.26
3.24
3.22
3.20
12.0
)
10.5
9.0
7.5
6.0
4.5
3.0
1.5
Outpu t Curre nt:IOUT(A
Output Vo ltage : VOU T(V )
Output Current: IOUT(A)
0.0
-1.5
11
10
9
8
7
6
Output Voltage: VOUT(V)
Su pply Voltage : VIN(V)
5
100
80
60
40
20
ripple rejection rate（ｄB)
Ripple Rejection Rate: PSRR (dB)
0
0.01 0.1 1 10 100
XB1085K12B(VOUT=3.3V)
CIN=CL= 10μF(Tantal)
CIN=CL=10μF (Tantalum)
VOUT
IOUT
Time（100μs/DIV）
XB1085K12B(VOUT=3.3V)
CIN=1μF (Tantalum), CL=10μF (Tantalum)
CIN=1μF(Tantal),CL=10μF(Tantal)
VOUT
VIN
Time（200μs/DIV）
XB1085K12B(VOUT=3.3V)
VIN=6.3VDC+1.0Vp-pAC
IOUT=1A、Ta=25℃、CL=25uF(Tantal)
IOUT=1A, Ta= 25℃, CL=25μF (Tantalum)
0.1 1 10
ripple rejection rate（kHz)
Ripple Frequency: f (kHz)
VIN=6.3VDC+ 1.0Vp-pAC
VIN=6.3V
3A
0.1A
IOUT=200mA
IOUT=200mA
7.3V
5.3V
VIN=6.3V
4.0
3.0
2.0
1.0
0.0
3.36
3.34
3.32
3.30
3.28
3.26
3.24
OutputVoltage:VOUT(V)
Output Voltage: VOUT(V)
■ PACKAGING INFORMATION
●TO-252
0.75±0.15
6.55±0.2
5.3±0.2
0.75±0.15
（2. 28） （2. 28）
1.1±0.25
6.1±0.15
0.75±0.15
+0.1
-0.15
2.3
9.9±0.55
0.85±0.25
0.5±0.1
0. 5±0. 1
MIN4.32
単位 ： m m
UNIT: mm
XB1085
Series
9/11
XB1085 Series
■MARKING RULE
●TO-252
① ② ③
④
⑤ ⑥
⑦ ⑧ ⑨
2
1 3
TO-252
(TOP VIEW)
ex.)
0 to 9, A to Z repeated.
(G, I, J, O, Q, W excepted. ‘0’ of the first digit does not mark.)
* No character inversion used.
ex.)
10/11
①② represents product series
MARK
① ②
PRODUCT SERIES
8 5 XB1085****J*
③ represent the type of regulator
MARK TYPE PRODUCT SERIES
P Fixed Output Type XB1085P***J*
K Adjustable (Externally Set) XB1085K***J*
④⑤ represents output voltage
MARK
④ ⑤
OUTPUT
VOTLAGE
1 5 1.5V XB1085P151J*
1 8 1.8V XB1085P181J*
2 5 2.5V XB1085P251J*
3 3 3.3V XB1085P331J*
5 0 5.0V XB1085P501J*
1 2 ADJ XB1082K12BJ*
⑥ represents output voltage accuracy and output type
OUTPUT VOLTAGE
MARK
ACCURACY
PRODUCT SERIES
(OUTPUT TYPE)
1 1% XB1085P**1J*
B Adjustable XB1085K12BJ*
⑦ represents the last digit of production year
MARK PRODUCTION YEAR
7 2007
8 2008
⑧⑨ represents production lot number
MARK
⑧ ⑨
PRODUCTION LOT NUMBER
Blank 3 03
1 A 1A
PRODUCT
SERIES
XB1085
Series
1. The products and product specifications contained herein are subject to change without
notice to improve performance characteristics. Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
2. We assume no responsibility for any infringement of patents, patent rights, or other
rights arising from the use of any information and circuitry in this datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet are nodeveloped, designed, or approved for use with
such equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this datasheet within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We assume no responsibility for damage or loss due to abnormal use.
7. All rights reserved. No part of this datasheet may be copied or reproduced without the
prior permission of TOREX SEMICONDUCTOR LTD.
11/11
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