TOREX XC9260A10DPR-G

XC9260/XC9261Series
ETR05042-001
COT Control, 1.5A Synchronous Step-Down DC/DC Converters
☆GreenOperation-compatible
■GENERAL DESCRIPTION
The XC9260/XC9261 series is a group of synchronous-rectification type DC/DC converters with a built-in P-channel MOS driver
transistor and N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. Output voltage is internally
set in a range from 0.8V to 3.6V (accuracy: ±2.0%) increments of 0.05V. The device provides a high efficiency, stable power
supply with an output current of 1.5A to be configured using only a coil and two capacitors connected externally. Oscillation
frequency is set to 1.2MHz or 3.0MHz can be selected for suiting to your particular application.
(*)
As for operation mode HiSAT-COT control excellent in transient response, the XC9260 series is PWM control, the XC9261
series is automatic PWM/PFM switching control, allowing fast response, low ripple and high efficiency over the full range of loads
(from light load to heavy load).
During stand-by, all circuits are shutdown to reduce current consumption to as low as 1.0μA or less. As for the soft-start function
as fast as 0.3ms in typical for quick turn-on. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS
driver transistor is forced OFF when input voltage becomes 2.00V or lower. The B types integrate CL High Speed discharge
function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge.
Two types of package SOT-89-5, USP-6C are available.
(*)
HiSAT-COT is an original Torex term for High Speed Transient Response.
■FEATURES
■APPLICATIONS
●Mobile phones
●Bluetooth headsets
●Smart phones, Personal digital assistance
●Portable game consoles
●Digital still cameras, Camcorders
●Codeless phones
Input Voltage Range
Output Voltage Range
Quiescent Current
Output Current
Oscillation Frequency
:
:
:
:
:
Efficiency
:
Control Methods
:
:
:
:
:
:
:
:
:
:
:
:
:
:
●Point-of-Load (POL)
Protection Circuits
Functions
Capacitor
Operating Ambient Temperature
Packages
Environmentally Friendly
2.7V～5.5V
0.8V～3.6V (±2.0%)
25μA (fOSC=3.0MHz)
1.5A
1.2MHz, 3.0MHz
90%
(VIN=3.7V, VOUT=1.8V, IOUT=200mA)
HiSAT-COT Control
100% Duty Cycle
PWM Control (XC9260)
PWM/PFM Auto (XC9261)
Thermal Shutdown
Current Limit (Pendent character)
Short Circuit Protection (Type B)
Soft-Start
UVLO
CL High Speed Discharge (Type B)
Ceramic Capacitor
- 40℃ ～ + 105℃
SOT-89-5, USP-6C
EU RoHS Compliant, Pb Free
■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE
CHARACTERISTICS
XC9260A18D / XC9261A18D
L = LQM2MPN1R0MGH(1.0μ H)
CIN=10μ F(GRM155R61A106M) CL=10μ F(GRM155R61A106M)
VIN
Lx
CE
VOUT
VOUT
1.5A
90
CE
PGND
CIN
100
AGND
CL
Efficiency: EFFI (%)
L
VIN
80
70
60
XC9261
VIN = 5.0V
VIN = 3.7V
50
XC9260
40
30
VIN = 5.0V
VIN = 3.7V
20
10
0
0.1
1
10
100
1000
10000
Output Current: IOUT (mA)
1/28
XC9260/XC9261Series
■ BLOCK DIAGRAM
1)
XC9260/XC9261 Series Type A (SOT-89-5)
2)
XC9260/XC9261 Series Type B (SOT-89-5)
(*) The XC9260 offers a fixed PWM control, a Control Logic of PWM/PFM Selector is fixed at “PWM” internally.
The XC9261 control scheme is a fixed PWM/PFM automatic switching, a Control Logic of PWM/PFM Selector is fixed at “PWM/PFM
automatic switching” internally.
Diodes inside the circuit are an ESD protection diode and a parasitic diode.
2)
(*)
XC9260/XC9261 Series Type B (USP-6C)
2)
XC9260/XC9261 Series Type B (USP-6C)
The XC9260 offers a fixed PWM control, a Control Logic of PWM/PFM Selector is fixed at “PWM” internally.
The XC9261 control scheme is a fixed PWM/PFM automatic switching, a Control Logic of PWM/PFM Selector is fixed at “PWM/PFM
automatic switching” internally.
Diodes inside the circuit are an ESD protection diode and a parasitic diode.
2/28
XC9260/XC9261
Series
■PRODUCT CLASSIFICATION
1) Ordering Information
XC9260①②③④⑤⑥-⑦ PWM Control
XC9261①②③④⑤⑥-⑦ PWM/PFM Automatic switching control
DESIGNATOR
ITEM
①
Type
A
Output Voltage
④
Oscillation Frequency
(*1)
08～36
Packages (Order Unit)
DESCRIPTION
Refer to Selection Guide
B
②③
⑤⑥-⑦
(*1)
SYMBOL
Output voltage options
e.g. 1.2V → ②=1, ③=2
1.25V → ②=1, ③=C
0.05V increments : 0.05=A, 0.15=B, 0.25=C,
0.35=D, 0.45=E, 0.55=F,
0.65=H, 0.75=K, 0.85=L,
0.95=M
C
1.2MHz
D
3.0MHz
PR-G
SOT-89-5 (1,000/Reel)
ER-G
USP-6C (3,000/Reel)
The “-G” suffix denotes Halogen and Antimony free as well as being fully RoHS compliant.
2) Selection Guide
SHORT PROTECTION
(LATCH)
UVLO
No
No
Yes
Yes
Yes
Yes
CURRENT LIMIT
SOFT-START TIME
THERMAL SHUTDOWN
Yes
Yes
Fixed
Yes
Yes
Yes
Fixed
Yes
TYPE
OUTPUT VOLTAGE
A
Fixed
B
Fixed
TYPE
CHIP ENABLE
A
B
CL AUTO-DISCHARGE
3/28
XC9260/XC9261Series
■PIN CONFIGURATION
* The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so
as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected
to the GND (No. 1 and 2) pin.
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTIONS
5
Lx
Switching Output
2
-
VSS
Ground
3
3
VOUT
Output Voltage Monitor
4
4
CE
Chip Enable
SOT-89-5
USP-6C
1
5
6
VIN
Power Input
-
2
AGND
Analog Ground
-
1
PGND
Power Ground
■FUNCTION
CE PIN Function
PIN NAME
CE
SIGNAL
STATUS
L
Stand-by
H
Active
Please do not leave the CE pin open.
4/28
XC9260/XC9261
Series
■ABSOLUTE MAXIMUM RATINGS
Ta=25℃
PARAMETER
SYMBOL
RATINGS
UNITS
Input Voltage
VIN
-0.3～+6.2
V
Lx PIN Voltage
VLx
-0.3～VIN+0.3 or +6.2(*1)
V
Output Voltage
VOUT
-0.3～VIN+0.3 or +4.0(*2)
V
CE Input Voltage
VCE
-0.3～+6.2
V
Lx Current
ILx
-
mA
Pd
500
1300 (PCB mounted) (*3)
120
1000 (PCB mounted) (*3)
mW
Operating Ambient Temperature
Topr
-40～+105
℃
Storage Temperature
Tstg
-55～+125
℃
SOT-89-5
Power Dissipation
USP-6C
* All voltages are described based on the GND (AGND and PGND and VSS) pin.
(*1)
The maximum value should be either VIN+0.3V or +6.2V in the lowest.
(*2)
The maximum value should be either VIN+0.3V or +4.0V in the lowest.
(*3)
This is a reference data taken by using the test board.
Please refer to page 25 and 26 for details.
5/28
XC9260/XC9261Series
■ELECTRICAL CHARACTERISTICS
XC9260/XC9261 Series
PARAMETER
SYMBOL
Output Voltage
VOUT
Operating Voltage Range
VIN
Maximum Output Current
UVLO Voltage
(*2)
MIN.
TYP.
MAX.
UNITS
Ta=25℃
CIRCUIT
<E-1>
<E-2>
<E-3>
V
①
2.7
-
5.5
V
①
1500
-
-
mA
①
1.35
2.0
2.68
V
③
fOSC=1.2MHz
-
15.0
25.0
fOSC=3.0MHz
-
25.0
40.0
μA
②
fOSC=1.2MHz
-
250
450
fOSC=3.0MHz
-
400
825
μA
②
-
0.0
1.0
μA
②
<E-5>
<E-6>
<E-7>
ns
①
CONDITIONS
When connected to external components,
IOUT=30mA
(*1),
IOUTMAX
When connected to external components
VIN =<C -1>
VUVLO
VOUT=0.6V,Voltage which Lx pin holding “L” level
(*6)
Quiescent Current
(XC9261)
Iq
VOUT =VOUT(T) × 1.1V
Quiescent Current
(XC9260)
Iq
VOUT =VOUT(T) × 1.1V
Stand-by Current
ISTB
Minimum ON time
tONmin
When connected to external components,
VIN = <C-1>, IOUT = 1mA
Thermal shutdown
TTSD
-
-
150
-
℃
①
Thermal shutdown
hysteresis
THYS
-
-
30
-
℃
①
Lx SW ”H” ON Resistance
RLXH
VOUT=0.6V, ILX=100mA
-
0.14
0.28
Ω
④
Lx SW ”L” ON
(*4)
Resistance
RLXL
VOUT=VOUT(T) V × 1.1, ILX=100mA
-
0.10
0.20
Ω
④
Lx SW ”H” Leakage Current
ILeakH
VIN=5.5V, VCE=0V, VOUT=0V, VLX=0.0V
-
0.0
1.0
μA
⑤
Lx SW ”L” Leakage Current
IleakL
VIN=5.5V, VCE=0V, VOUT=0V, VLX=5.5V
-
0.0
30.0
μA
⑤
ILIMH
VOUT=0.6V, ILx until Lx pin oscillates
2.5
3.0
4.5
A
⑥
-
±100
-
ppm/℃
①
1.40
-
VIN
V
③
-
0.30
V
③
Current Limit
(*5)
Output Voltage
Temperature
Characteristics
∆VOUT/
(VOUT・∆Topr)
CE ”H” Voltage
VCEH
CE ”L” Voltage
VCEL
CE ”H” Current
ICEH
CE ”L” Current
VCE=0.0V
(*3)
(*3)
IOUT=30mA, -40℃≦Topr≦105℃
VOUT=0.6V, Applied voltage to VCE,
(*6)
Voltage changes Lx to “H” level
VOUT=0.6V, Applied voltage to VCE,
(*6)
Voltage changes Lx to “L” level
(*7)
VSS
VIN=5.5V, VCE=5.5V, VOUT=0.0V
-0.1
-
0.1
μA
⑤
ICEL
VIN=5.5V, VCE=0.0V, VOUT=0.0V
-0.1
-
0.1
μA
⑤
Soft-start Time
tSS
VCE=0.0V → 5.0V VOUT=VOUT(T)V × 0.9
After "H" is fed to CE, the time by when clocks are
generated at Lx pin.
0.10
0.30
0.50
ms
③
Short Protection
Threshold
Voltage (Type B)
VSHORT
Sweeping VOUT, VOUT voltage which Lx becomes “L”
(*6)
level
0.17
0.27
0.37
V
③
CL Discharge (Type B)
RDCHG
VCE=0V, VOUT=4.0V
50
210
300
Ω
⑦
Unless otherwise stated, VIN=5V, VCE=5V, VOUT(T)=Nominal Value,
NOTE:
(*1)
When the difference between the input and the output is small, 100% duty might come up and internal control circuits keep P-ch driver turning
on even though the output current is not so large.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*2)
Including UVLO detect voltage, hysteresis operating voltage range for UVLO release voltage.
(*3)
RLXH= (VIN - Lx pin measurement voltage) / 100mA, RLXL= Lx pin measurement voltage / 100mA
(*4)
Design value for the XC9261 series.
(*5)
Current limit denotes the level of detection at peak of coil current.
(*6)
"H"=VIN ~ VIN - 1.2V, "L"=- 0.1V ~ + 0.1V
(*7)
AGND in the case of USP-6C.
6/28
XC9260/XC9261
Series
■ELECTRICAL CHARACTERISTICS (Continued)
SPEC Table
NOMINAL
tONmin
VOUT
OUTPUT
fOSC = 1.2MHz
fOSC = 3.0MHz
VOLTAGE
<E-1>
<E-2>
<E-3>
<C-1>
<E-5>
<E-6>
<E-7>
<E-5>
<E-6>
<E-7>
VOUT(T)
MIN.
TYP.
MAX.
VIN
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
0.80
0.784
0.800
0.816
2.70
173
247
321
71
119
166
0.85
0.833
0.850
0.867
2.70
184
262
341
72
121
169
0.90
0.882
0.900
0.918
2.70
194
278
361
73
122
171
0.95
0.931
0.950
0.969
2.70
205
293
381
74
123
172
1.00
0.980
1.000
1.020
2.70
216
309
401
86
123
160
1.05
1.029
1.050
1.071
2.70
227
324
421
91
130
169
1.10
1.078
1.100
1.122
2.70
238
340
441
95
136
177
1.15
1.127
1.150
1.173
2.70
248
355
461
99
142
185
1.20
1.176
1.200
1.224
2.70
259
370
481
104
148
193
1.25
1.225
1.250
1.275
2.70
270
386
502
108
154
201
1.30
1.274
1.300
1.326
2.70
281
401
522
112
160
209
1.35
1.323
1.350
1.377
2.70
292
417
542
117
167
217
1.40
1.372
1.400
1.428
2.70
302
432
562
121
173
225
1.45
1.421
1.450
1.479
2.70
313
448
582
125
179
233
1.50
1.470
1.500
1.530
2.70
324
463
602
130
185
241
1.55
1.519
1.550
1.581
2.70
335
478
622
134
191
249
1.60
1.568
1.600
1.632
2.70
346
494
642
138
198
257
1.65
1.617
1.650
1.683
2.75
350
500
650
140
200
260
1.70
1.666
1.700
1.734
2.83
350
500
650
140
200
260
1.75
1.715
1.750
1.785
2.92
350
500
650
140
200
260
1.80
1.764
1.800
1.836
3.00
350
500
650
140
200
260
1.85
1.813
1.850
1.887
3.08
350
500
650
140
200
260
1.90
1.862
1.900
1.938
3.17
350
500
650
140
200
260
1.95
1.911
1.950
1.989
3.25
350
500
650
140
200
260
2.00
1.960
2.000
2.040
3.33
350
500
650
140
200
260
2.05
2.009
2.050
2.091
3.42
350
500
650
140
200
260
2.10
2.058
2.100
2.142
3.50
350
500
650
140
200
260
2.15
2.107
2.150
2.193
3.58
350
500
650
140
200
260
2.20
2.156
2.200
2.244
3.67
350
500
650
140
200
260
2.25
2.205
2.250
2.295
3.75
350
500
650
140
200
260
2.30
2.254
2.300
2.346
3.83
350
500
650
140
200
260
2.35
2.303
2.350
2.397
3.92
350
500
650
140
200
260
2.40
2.352
2.400
2.448
4.00
350
500
650
140
200
260
2.45
2.401
2.450
2.499
4.08
350
500
650
140
200
260
2.50
2.450
2.500
2.550
4.17
350
500
650
140
200
260
2.55
2.499
2.550
2.601
4.25
350
500
650
140
200
260
2.60
2.548
2.600
2.652
4.33
350
500
650
140
200
260
2.65
2.597
2.650
2.703
4.42
350
500
650
140
200
260
2.70
2.646
2.700
2.754
4.50
350
500
650
140
200
260
7/28
XC9260/XC9261Series
■ELECTRICAL CHARACTERISTICS (Continued)
SPEC Table
NOMINAL
tONmin
VOUT
OUTPUT
fOSC=1.2MHz
fOSC=3.0MHz
VOLTAGE
<E-1>
<E-2>
<E-3>
<C-1>
<E-5>
<E-6>
<E-7>
<E-5>
<E-6>
<E-7>
VOUT(T)
MIN.
TYP.
MAX.
VIN
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
2.75
2.695
2.750
2.805
4.58
350
500
650
140
200
260
2.80
2.744
2.800
2.856
4.67
350
500
650
140
200
260
2.85
2.793
2.850
2.907
4.75
350
500
650
140
200
260
2.90
2.842
2.900
2.958
4.83
350
500
650
140
200
260
2.95
2.891
2.950
3.009
4.92
350
500
650
140
200
260
3.00
2.940
3.000
3.060
5.00
350
500
650
140
200
260
3.05
2.989
3.050
3.111
5.08
350
500
650
140
200
260
3.10
3.038
3.100
3.162
5.17
350
500
650
140
200
260
3.15
3.087
3.150
3.213
5.25
350
500
650
140
200
260
3.20
3.136
3.200
3.264
5.33
350
500
650
140
200
260
3.25
3.185
3.250
3.315
5.42
350
500
650
140
200
260
3.30
3.234
3.300
3.366
5.50
350
500
650
140
200
260
3.35
3.283
3.350
3.417
5.50
355
508
660
142
203
264
3.40
3.332
3.400
3.468
5.50
361
515
670
144
206
268
3.45
3.381
3.450
3.519
5.50
366
523
680
146
209
272
3.50
3.430
3.500
3.570
5.50
371
530
689
148
212
276
3.55
3.479
3.550
3.621
5.50
377
538
699
151
215
280
3.60
3.528
3.600
3.672
5.50
382
545
709
153
218
284
8/28
XC9260/XC9261
Series
■TEST CIRCUITS(*1)
< Circuit No.① >
< Circuit No.② >
Wave Form Measure Point
L
A
VIN
CE
CIN
AGND
A
LX
VOUT
V
CL
PGND
RL
1μF
VIN
CE
AGND
LX
VOUT
PGND
※ External Components
fOSC = 3.0MHz
L : 1.0μH(LQM2MPN1R0MGH)
CIN : 10μF(ceramic)
CL : 10μF(ceramic)
※ External Components
fOSC = 1.2MHz
L : 4.7μH(LTF5022T-4R7N2R0-LC)
CIN : 10μF(ceramic)
CL : 10μF(ceramic)
< Circuit No.④ >
< Circuit No.③ >
Wave Form Measure Point
VIN
CE
1uF
AGND
VIN
LX
Rpulldown
200Ω
VOUT
1μF
CE
AGND
PGND
LX
VOUT
V
ILX
PGND
RLXH = (VIN-VLx)/ILX
RLXL = VLx/ILX
< Circuit No.⑤ >
1μF
ILeakH
VIN
LX
CE
VOUT
ICEH
A
AGND
< Circuit No.⑥ >
A
VIN
LX
CE
VOUT
ILIMH
ILeakL
1μF
PGND
Wave Form Measure Point
AGND
V
PGND
ICEL
< Circuit No.⑦ >
B TYPE
VIN
LX
1μF
CE
AGND
(*1)
VOUT
A
PGND
In the case of SOT-89-5, AGND and PGND are treated as VSS.
9/28
XC9260/XC9261Series
■TYPICAL APPLICATION CIRCUIT
* In the case of SOT-89-5, AGND and PGND are treated as VSS.
【Typical Examples】fOSC=1.2MHz
MANUFACTURER
L
PRODUCT NUMBER
VALUE
murata
LQH5BPN4R7NT0L
4.7μH
TDK
LTF5022T-4R7N2R0-LC
4.7μH
Coilcraft
XFL4020-472MEC
4.7μH
MANUFACTURER
PRODUCT NUMBER
VALUE
【Typical Examples】fOSC=3.0MHz
L
murata
LQM2MPN1R0MGH
1.0μH
TAIYO YUDEN
MAKK2016T1R0M
1.0μH
TDK
MLP2520K1R0M
1.0μH
【Typical Examples】(*1) fOSC=1.2MHz, fOSC=3.0MHz
CIN
CL
MANUFACTURER
PRODUCT NUMBER
VALUE
murata
GRM155R61A106M
10μF/10V
murata
GRM21BR71A106KE51
10μF/10V
TAIYO YUDEN
LMK212AB7106MG
10μF/10V
murata
GRM155R61A106M
10μF/10V (*2)
murata
GRM21BR71A106KE51
10μF/10V (*2)
TAIYO YUDEN
LMK212AB7106MG
10μF/10V (*2)
(*1)
Select components appropriate to the usage conditions (ambient temperature, input & output voltage).
(*2)
CL=20μF or more if VIN - VOUT(T)<1.5
・The relationship between Output Voltage, Input Voltage, and CL value
5.5
Input Voltage (V)
5.2
4.9
4.6
External components
CL = 10μF
4.3
4.0
3.7
3.4
3.1
2.8
External components
CL = 20μF　or more
2.5
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
Output Voltage (V)
10/28
XC9260/XC9261
Series
■OPERATIONAL EXPLANATION
The XC9260/XC9261 series consists of a reference voltage source, error amplifier, comparator, phase compensation, minimum
on time generation circuit, output voltage adjustment resistors, P-channel MOS driver transistor, N-channel MOS switching
transistor for the synchronous switch, current limiter circuit, UVLO circuit, thermal shutdown circuit, short protection circuit,
PWM/PFM selection circuit and others. (See the BLOCK DIAGRAM below.)
BLOCK DIAGRAM XC9260/XC9261 Series Type B (SOT-89-5)
The method is HiSAT-COT (High Speed circuit Architecture for Transient with Constant On Time) control, which features on
time control method and a fast transient response that also achieves low output voltage ripple.
The on time (ton) is determined by the input voltage and output voltage, and turns on the Pch MOS driver Tr. for a fixed time.
During the off time (toff), the voltage that is fed back through R1 and R2 is compared to the reference voltage by the error amp,
and the error amp output is phase compensated and sent to the comparator. The comparator compares this signal to the
reference voltage, and if the signal is lower than the reference voltage, sets the SR latch. On time then resumes. By doing this,
PWM operation takes place with the off time controlled to the optimum duty ratio and the output voltage is stabilized. The phase
compensation circuit optimizes the frequency characteristics of the error amp, and generates a ramp wave similar to the ripple
voltage that occurs in the output to modulate the output signal of the error amp. This enables a stable feedback system to be
obtained even when a low ESR capacitor such as a ceramic capacitor is used, and a fast transient response and stabilization of
the output voltage are achieved.
<Minimum on time generation circuit>
Generates an on time that depends on the input voltage and output voltage (ton). The on time is set as given by the equations
below.
fOSC≒1.2MHz type
ton (ns) = VOUT/VIN×833
fOSC≒3.0MHz type
ton (ns) = VOUT/VIN×333
<Switching frequency>
The switching frequency can be obtained from the on time (ton), which is determined by the input voltage and output voltage,
and the PWM controlled off time (toff) as given by the equation below.
fOSC (MHz) = VOUT(V) / (VIN(V)×ton(ns))
<100% duty cycle mode>
When the load current is heavy and the voltage difference between input voltage and output voltage is small, 100% duty cycle
mode is activated and it keeps the Pch MOS driver Tr. keep on. 100% duty cycle mode attains a high output voltage stability and
a high-speed response under all load conditions, from light to heavy, even in conditions where the dropout voltage is low.
<Error amp>
The error amp monitors the output voltage. The voltage divided by the internal R1 and R2 resistors is a feedback voltage for
Error Amp. and compared to the reference voltage. The output voltage of the error amp becomes higher when the feedback
voltage is higher than the reference voltage. The frequency characteristics of the error amp are optimized internally.
11/28
XC9260/XC9261Series
■OPERATIONAL EXPLANATION (Continued)
<Reference voltage source, soft start function>
The reference voltage forms a reference that is used to stabilize the output voltage of the IC.
After “H” level is fed to CE pin, the reference voltage connected to the error amp increases linearly during the soft start interval.
This allows the voltage divided by the internal R1 and R2 resistors and the reference voltage to be controlled in a balanced
manner, and the output voltage rises in proportion to the rise in the reference voltage. This operation prevents rush input current
and enables the output voltage to rise smoothly.
If the output voltage does not reach the set output voltage within the soft start time, such as when the load is heavy or a large
capacity output capacitor is connected, the balancing of the voltage divided by the internal resistors R1 and R2 and the
reference voltage is lost, however, the current restriction function activates to prevent an excessive increase of input current,
enabling a smooth rise of the output voltage.
<PWM/PFM selection circuit>
Regarding XC9260 which has PWM control method, it works with a continuous conduction mode, and operates at a stable
switching frequency by means of an on time (ton) that is determined by the input voltage and output voltage regardless of the load.
Regarding XC9261 which has PWM/PFM auto switching control method, it works with a discontinuous conduction mode at
light loads, and lowers the switching frequency to reduce switching loss and improve efficiency.
<CE function>
Operation starts when “H” voltage is input into the CE pin. The IC can be put in the shutdown state by inputting “L” voltage into
the CE pin. In the shutdown state, the supply current of the IC is 0μA (TYP.), and the Pch MOS driver Tr. and Nch MOS switch
Tr. for synchronous rectification turn off. The CE pin is a CMOS input and the sink current is 0μA.
<UVLO Circuit>
When the VIN voltage becomes 2.00V (TYP.) or lower, the P-ch MOS driver transistor output driver transistor is forced OFF to
prevent false pulse output caused by unstable operation of the internal circuitry. When the VIN pin voltage becomes 2.10V
(TYP.) or higher, switching operation takes place. By releasing the UVLO function, the IC performs the soft start function to
initiate output startup operation. The UVLO circuit does not cause a complete shutdown of the IC,but causes pulse output to be
suspended; therefore, the internal circuitry remains in operation.
<Thermal Shutdown>
For protection against heat damage of the ICs, thermal shutdown function monitors chip temperature. The thermal shutdown
circuit starts operating and the P-ch MOS driver and N-ch MOS driver transistor will be turned off when the chip’s temperature
reaches 150℃. When the temperature drops to 120℃ or less after shutting of the current flow, the IC performs the soft-start
function to initiate output startup operation.
<Short-circuit protection function>
The B type short-circuit protection circuit protects the device that is connected to this product and to the input/output in
situations such as when the output is accidentally shorted to GND. The short-circuit protection circuit monitors the output
voltage, and when the output voltage falls below the short-circuit protection threshold voltage, it turns off the Pch MOS driver Tr
and latches it. Once in the latched state, operation is resumed by turning off the IC from the CE pin and then restarting, or by
re-input into the VIN pin.
<CL High Speed Discharge>
The B type can quickly discharge the electric charge at the output capacitor (CL) when a low signal to the CE pin which
enables a whole IC circuit put into OFF state, is inputted via the N-ch MOS switch transistor located between the VOUT pin and
the GND pin. When the IC is disabled, electric charge at the output capacitor (CL) is quickly discharged so that it may avoid
application malfunction.
Output Voltage Dischage characteristics
R DCHG = 210Ω(TY P) C L=10μF
5.0
4.5
Output Voltage: VOUT(V)
V=VOUT(T)×e – t /τ
t=τln (VOUT(T) / V)
V: Output voltage after discharge
VOUT(T): Output voltage
t: Discharge time
τ: CL×RDCHG
CL: Capacitance of Output capacitor
RDCHG: CL auto-discharge resistance,
but it depends on supply voltage.
VOUT = -1.2V
VOUT = 1.8V
-VOUT = 3.3V
---
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
2
4
6
8
10
12
14
Discharge Time: t(ms)
12/28
16
18 20
XC9260/XC9261
Series
■OPERATIONAL EXPLANATION (Continued)
<Current Limit>
The current limiter circuit of the XC9260/XC9261 series monitors the current flowing through the P-channel MOS driver transistor
connected to the Lx pin. When the driver current is greater than a specific level, the current limit function operates to turn off the
pulses from the Lx pin at any given timing. When the over current state is eliminated, the IC resumes its normal operation.
■NOTE ON USE
1. For the phenomenon of temporal and transitional voltage decrease or voltage increase, the IC may be damaged or
deteriorated if IC is used beyond the absolute MAX. specifications.
2. Spike noise and ripple voltage arise in a switching regulator as with a DC/DC converter. These are greatly influenced by
external component selection, such as the coil inductance, capacitance values, and board layout of external components.
Once the design has been completed, verification with actual components should be done.
3. The DC/DC converter characteristics depend greatly on the externally connected components as well as on the
characteristics of this IC, so refer to the specifications and standard circuit examples of each component when carefully
considering which components to select. Be especially careful of the capacitor characteristics and use B characteristics (JIS
standard) or X7R, X5R (EIA standard) ceramic capacitors.
4. Make sure that the PCB GND traces are as thick and wide as possible. The VSS pin or PGND pin and AGND pin fluctuation
caused by high ground current at the time of switching may result in instability of the IC. Therefore, the GND traces close to
the VSS pin, PGND pin and AGND pin are important.
5. Mount external components as close as possible to the IC. Keep the wiring short and thick to lower the wiring impedance.
6. A feature of HiSAT-COT control is that it controls the off time in order to control the duty, which varies due to the effects of
power loss. In addition, changes in the on time due to 100% duty cycle mode are allowed. For this reason, caution must be
exercised as the characteristics of the switching frequency will vary depending on the external component characteristics,
board layout, input voltage, output voltage, load current and other parameters.
7. Due to propagation delay inside the product, the on time generated by the minimum on time generation circuit is not the same
as the on time that is the ratio of the input voltage to the output voltage.
8. With regard to the current limiting value, the actual coil current may at times exceed the electrical characteristics due to
propagation delay inside the product.
9. The CE pin is a CMOS input pin. Do not use with the pin open. If connecting to the input or ground, use the resistor not more
than 1MΩ or less. To prevent malfunctioning of the device connected to this product or the input/output due to short circuiting
between pins, it is recommended that a resistor be connected.
10. In the B type, if the output voltage drops below the short circuit protection threshold voltage at the end of the soft start
interval, operation will stop.
11. Regarding XC9261 which has PWM/PFM auto switching control method, it works with a discontinuous conduction mode at
light loads, and in this case where the voltage difference between input voltage and output voltage is low or the coil
inductance is higher than the value indicated in the standard circuit example, the coil current may reverse when the load is
light, and thus pulse skipping will not be possible and light load efficiency will worsen.
12. When the voltage difference between input voltage and output voltage is low, the load stability feature may deteriorate.
13. Torex places an importance on improving our products and their reliability.We request that users incorporate fail-safe
designs and post-aging protection treatment when using Torex products in their systems.
13/28
XC9260/XC9261Series
■NOTE ON USE (Continued)
14. Instructions of pattern layouts
The operation may become unstable due to noise and/or phase lag from the output current when the wire impedance is high,
please place the input capacitor(CIN) and the output capacitor (CL) as close to the IC as possible.
(1) In order to stabilize VIN voltage level, we recommend that a by-pass capacitor (CIN) be connected as close as possible to the
VIN pin, PGND pin and AGND pin.
(2) Please mount each external component as close to the IC as possible.
(3) Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit
impedance.
(4) Make sure that the GND traces are as thick as possible, as variations in ground potential caused by high ground currents at
the time of switching may result in instability of the IC.
(5) This series’ internal driver transistors bring on heat because of the output current and ON resistance of P-channel and
N-channel MOS driver transistors. Please consider the countermeasures against heat if necessary.
<Reference pattern layout>
SOT-89-5
PCB mounted
USP-6C
PCB mounted
14/28
1st
Layer
2nd
Layer
1st
Layer
2nd
Layer
XC9260/XC9261
Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Efficiency vs. Output Current
XC9260A10D / XC9261A10D
XC9260A10C / XC9261A10C
L = LQM2MPN1R0MGH(1.0μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
100
100
90
80
70
60
XC9261
50
VIN = 5.0V
VIN = 3.7V
40
XC9260
30
20
Efficiency: EFFI (%)
Efficiency: EFFI (%)
90
VIN = 5.0V
VIN = 3.7V
10
80
70
60
40
VIN = 5.0V
VIN = 3.7V
20
10
0
0.1
1
10
100
1000
0.1
10000
100
1000
XC9260A18D / XC9261A18D
XC9260A18C / XC9261A18C
90
80
80
XC9261
VIN = 5.0V
VIN = 3.7V
XC9260
40
30
VIN = 5.0V
VIN = 3.7V
20
10
Efficiency: EFFI (%)
100
70
10000
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
90
50
10
Output Current: IOUT (mA)
100
60
1
Output Current: IOUT (mA)
L = LQM2MPN1R0MGH(1.0μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
Efficiency: EFFI (%)
XC9260
30
0
70
XC9261
VIN = 5.0V
VIN = 3.7V
60
XC9260
50
40
30
VIN = 5.0V
VIN = 3.7V
20
10
0
0
0.1
1
10
100
1000
0.1
10000
1
XC9260A33D / XC9261A33D
90
Efficiency: EFFI (%)
100
90
XC9261
60
XC9260
VIN = 5.0V
1000
10000
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
100
70
100
XC9260A33C / XC9261A33C
L = LQM2MPN1R0MGH(1.0μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
80
10
Output Current: IOUT (mA)
Output Current: IOUT (mA)
Efficiency: EFFI (%)
XC9261
VIN = 5.0V
VIN = 3.7V
50
50
40
30
20
10
80
70
XC9261
60
XC9260
VIN = 5.0V
50
40
30
20
10
0
0
0.1
1
10
100
Output Current: IOUT (mA)
1000
10000
0.1
1
10
100
1000
10000
Output Current: IOUT (mA)
15/28
XC9260/XC9261Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Output Voltage vs. Output Current
XC9261A18D
XC9261A33D
L = LQM2MPN1R0MGH(1.0μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
L = LQM2MPN1R0MGH(1.0μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
3.60
Output Voltage: V OUT (V)
Output Voltage: V OUT (V)
2.00
1.90
1.80
1.70
V IN = 3.7V
3.50
3.40
3.30
3.20
V IN = 5.0V
3.10
3.00
1.60
0.1
1
10
100
1000
0.1
10000
1
10
100
1000
10000
Output Current: IOUT (mA)
Output Current: IOUT (mA)
(3) Ripple Voltage vs. Output Current
XC9260A18D / XC9261A18D
XC9260A33D / XC9261A33D
L = LQM2MPN1R0MGH(1.0μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
100
XC9261
80
Ripple Voltage: Vr(mV)
Ripple Voltage: Vr(mV)
90
L = LQM2MPN1R0MGH(1.0μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
100
XC9260
70
60
50
V IN = 3.7V
40
30
20
10
XC9260
70
60
V IN = 5.0V
50
40
30
20
0
0.1
1
10
100
1000
10000
0.1
1
10
100
1000
Output Current: IOUT (mA)
Output Current: IOUT (mA)
XC9260A18C / XC9261A18C
XC9260A33C / XC9261A33C
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
10000
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
100
100
90
XC9261
XC9260
80
70
60
50
40
30
V IN = 3.7V
20
Ripple Voltage: Vr(mV)
90
Ripple Voltage: Vr(mV)
XC9261
80
10
0
XC9261
XC9260
80
70
60
50
40
30
V IN = 5.0V
20
10
10
0
0
0.1
1
10
100
Output Current: IOUT (mA)
16/28
90
1000
10000
0.1
1
10
100
Output Current: IOUT (mA)
1000
10000
XC9260/XC9261
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) FB Voltage vs. Ambient Temperature
(5) UVLO Voltage vs. Ambient Temperature
XC9261B18D
XC9260A08D
1.95
V IN = 3.7V
UVLO Voltage: UVLO (V)
Feedback Voltage: VFB (V)
2.00
1.90
1.85
1.80
1.75
1.70
1.65
1.60
-50
-25
0
25
50
75
100
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
-50
125
-25
0
25
50
75
100
125
100
125
Ambient Temperature: Ta ( ℃)
Ambient Temperature: Ta ( ℃)
(6) Quiescent Current vs. Ambient Temperature
100
90
80
70
60
50
40
30
20
10
0
-50
XC9261A08C
Quiescent Current: Iq (μ A)
Quiescent Current: Iq (μ A)
XC9261A08D
V IN = 5.0V, 3.7V, 2.7V
-25
0
25
50
75
100
125
100
90
80
70
60
50
40
30
20
10
0
-50
V IN = 5.0V, 3.7V, 2.7V
-25
Ambient Temperature: Ta ( ℃)
0
25
50
Quiescent Current: Iq (μ A)
Quiescent Current: Iq (μ A)
50
75
XC9260A08C
V IN = 5.0V
V IN = 3.7V
V IN = 2.7V
-25
25
Ambient Temperature: Ta ( ℃)
XC9260A08D
1000
900
800
700
600
500
400
300
200
100
0
-50
0
75
Ambient Temperature: Ta ( ℃)
100
125
1000
900
800
700
600
500
400
300
200
100
0
-50
V IN = 5.0V
V IN = 3.7V
V IN = 2.7V
-25
0
25
50
75
100
125
Ambient Temperature: Ta ( ℃)
17/28
XC9260/XC9261Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(7) Stand-by Current vs. Ambient Temperature
(8) Oscillation Frequency vs. Ambient Temperature
XC9261A08D
XC9260A08D
L = LQM2MPN1R0MGH(1.0μH)
CIN = 10μF(GRM155R61A106M) CL = 10μF(GRM155R61A106M)
6.0
4.0
3.0
V IN = 5.0V
2.0
V IN = 3.7V, 2.7V
1.0
Oscillation Freqency: fOSC (kHz)
Standby Current: ISTB (μ A)
5.0
0.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
V IN = 5.0V
V IN = 3.6V
V IN = 3.0V
2.0
1.5
1.0
-50
-25
0
25
50
75
100
0.0
125
500.0
XC9260A18D
V IN = 5.0V, 3.6V
3.5
3.0
V IN = 3.0V
1.5
1.0
0.0
500.0
1000.0
1500.0
2000.0
L = LQM2MPN1R0MGH(1.0μH)
CIN = 10μF(GRM155R61A106M) CL = 10μF(GRM155R61A106M)
6.0
5.5
5.0
4.5
V IN = 5.0V, 5.5V
4.0
3.5
3.0
2.5
V IN = 4.2V
2.0
1.5
1.0
0.0
500.0
1000.0
1500.0
2000.0
Oscillation Freqency: fOSC (kHz)
Oscillation Freqency: fOSC (kHz)
5.5
2.5
2.0
Output Current: IOUT (mA)
Output Current: IOUT (mA)
XC9260A08C
XC9260A18C
3.0
2.5
V IN = 5.0V, 3.6V
1.5
1.0
V IN = 3.0V
0.5
0.0
0.0
500.0
1000.0
1500.0
Output Current: IOUT (mA)
18/28
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
Oscillation Freqency: fOSC (kHz)
Oscillation Freqency: fOSC (kHz)
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
2.0
2000.0
XC9260A33D
L = LQM2MPN1R0MGH(1.0μH)
CIN = 10μF(GRM155R61A106M) CL = 10μF(GRM155R61A106M)
6.0
4.0
1500.0
Output Current: IOUT (mA)
Ambient Temperature: Ta ( ℃)
5.0
4.5
1000.0
2000.0
3.0
V IN = 5.0V
V IN = 3.6V
V IN = 3.0V
2.5
2.0
1.5
1.0
0.5
0.0
0.0
500.0
1000.0
1500.0
Output Current: IOUT (mA)
2000.0
XC9260/XC9261
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(8) Oscillation Frequency vs. Ambient Temperature (Continued)
(9) Pch Driver ON Resistance vs. Ambient Temperature
XC9260A08D
Oscillation Freqency: fOSC (kHz)
L = LTF5022T-4R7N2R0-LC(4.7μ H)
CIN = 10μ F(GRM155R61A106M) CL = 10μ F(GRM155R61A106M)
3.0
2.5
2.0
V IN = 5.0V, 5.5V
1.5
1.0
V IN = 4.2V
0.5
0.0
0.0
500.0
1000.0
1500.0
Lx SW Pch ON Resistance: RLxH (mΩ)
XC9260A33C
300
250
200
150
V IN = 5.0V
V IN = 3.7V
V IN = 2.7V
100
50
0
2000.0
-50
-25
Output Current: IOUT (mA)
0
LxSW”H” Leakage Current: LeakH
I
(μA)
Lx SW Nch ON Resistance: RLxL (mΩ)
150
100
50
0
-50
-25
0
25
50
75
100
125
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
-50
Ambient Temperature: Ta ( ℃)
V IN = 5.5V
-25
0
LxSW”H” Leakage Current: LeakL
I
(μA)
1.2
CE”H” Voltage VCEH (V)
1.4
9.0
8.0
7.0
6.0
5.0
4.0
V IN = 5.5V
3.0
2.0
25
50
50
75
100
125
100
125
XC9261A08D
10.0
0
25
(13) CE ”H” Voltage vs. Ambient Temperature
XC9260A08D
-25
125
Ambient Temperature : Ta ( ℃)
(12) LxSW ”L” Leakage Current vs. Ambient Temperature
1.0
0.0
-50
100
XC9260A08D
V IN = 5.0V
V IN = 3.7V
V IN = 2.7V
200
75
(11) LxSW ”H” Leakage Current vs. Ambient Temperature
XC9260A08D
250
50
Ambient Temperature: Ta ( ℃)
(10) Nch Driver ON Resistance vs. Ambient Temperature
300
25
75
Ambient Temperature : Ta ( ℃)
100
125
1.0
0.8
0.6
0.2
V IN = 5.0V
V IN = 3.7V
V IN = 2.7V
0.0
-50
-25
0.4
0
25
50
75
Ambient Temperature: Ta ( ℃)
19/28
XC9260/XC9261Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(14) CE”L” Voltage vs. Ambient Temperature
(15) Soft-Start Time vs. Ambient Temperature
XC9261B08D
1.4
500
1.2
450
400
Soft-Start Time: tSS (us)
CE”L” Voltage VCEL (V)
XC9261A08D
1.0
0.8
0.6
V IN = 5.0V
V IN = 3.7V
V IN = 2.7V
0.4
0.2
0.0
-50
-25
0
25
50
75
100
V IN = 5.0V
350
300
250
200
150
100
50
0
-50
125
-25
Ambient Temperature: Ta ( ℃)
0
50
75
100
125
Current Limit: ILIMH (mA)
(18) Short Protection Threshold vs. Ambient Temperature
Short Protection Threshold VSHORT (mV)
XC9261B08D
500
400
300
200
V IN = 5.0V, 3.7V, 2.7V
0
-50
-25
0
25
50
75
Ambient Temperature: Ta ( ℃)
20/28
125
300
250
200
V IN = 5.0V
150
100
50
0
-50
-25
0
25
50
75
Ambient Temperature: Ta ( ℃)
Ambient Temperature : Ta ( ℃)
100
CL Discharge Resistance: RDCHG (Ω)
25
100
XC9261B08D
V IN = 5.0V
V IN = 3.7V
V IN = 2.7V
0
75
(17) CL Discharge Resistance vs. Ambient Temperature
XC9261A08D
-25
50
Ambient Temperature: Ta ( ℃)
(16) Current Limit vs. Ambient Temperature
4000
3800
3600
3400
3200
3000
2800
2600
2400
2200
2000
-50
25
100
125
100
125
XC9260/XC9261
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response
XC9260A12D
XC9261A12D
V IN = 5.0V V OUT = 1.2V f OSC = 3.0MHｚ IOUT = 10mA ⇒ 1.0A
L = LQM2MPN1R0MGH(1.0μ H) CIN = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
V IN = 5.0V V OUT = 1.2V f OSC = 3.0MHｚ IOUT = 10mA ⇒ 1.0A
L = LQM2MPN1R0MGH(1.0μ H) CIN = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
IOUT : 1.0A
IOUT : 1.0A
IOUT : 10mA
IOUT : 10mA
VOUT : 50mV/div
VOUT : 50mV/div
50μs/div
50μs/div
XC9260A18D
XC9261A18D
V IN = 5.0V V OUT = 1.8V f OSC = 3.0MHｚ IOUT = 10mA ⇒ 1.0A
L = LQM2MPN1R0MGH(1.0μ H) CIN = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
V IN = 5.0V V OUT = 1.8V f OSC = 3.0MHｚ IOUT = 10mA ⇒ 1.0A
L = LQM2MPN1R0MGH(1.0μ H) CIN = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
IOUT : 1.0A
IOUT : 1.0A
IOUT : 10mA
IOUT : 10mA
VOUT : 50mV/div
VOUT : 50mV/div
50μs/div
50μs/div
XC9260A33D
XC9261A33D
V IN = 5.0V V OUT = 3.3V f OSC = 3.0MHｚ IOUT = 10mA ⇒ 1.0A
L = LQM2MPN1R0MGH(1.0μH) CIN = 10μF(GRM155R61A106M)
CL = 10μF(GRM155R61A106M)
V IN = 5.0V V OUT = 3.3V f OSC = 3.0MHｚ IOUT = 10mA ⇒ 1.0A
L = LQM2MPN1R0MGH(1.0μH) CIN = 10μF(GRM155R61A106M)
CL = 10μF(GRM155R61A106M)
IOUT : 1.0A
IOUT : 1.0A
IOUT : 10mA
IOUT : 10mA
VOUT : 50mV/div
VOUT : 50mV/div
50μs/div
50μs/div
21/28
XC9260/XC9261Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response (Continued)
XC9260A12C
XC9261A12C
V IN = 5.0V V OUT = 1.2V f OSC = 1.2MHｚ IOUT = 10mA ⇒ 1.0A
V IN = 5.0V V OUT = 1.2V f OSC = 1.2MHｚ IOUT = 10mA ⇒ 1.0A
L = LTF5022T-4R7N2R0-LC(4.7μH) CIN = 10μ F(GRM155R61A106M) L = LTF5022T-4R7N2R0-LC(4.7μH) CIN = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
IOUT : 1.0A
IOUT : 1.0A
IOUT : 10mA
IOUT : 10mA
VOUT : 100mV/div
VOUT : 100mV/div
50μs/div
50μs/div
XC9260A18C
XC9261A18C
V IN = 5.0V V OUT = 1.8V f OSC = 1.2MHｚ IOUT = 10mA ⇒ 1.0A
V IN = 5.0V V OUT = 1.8V f OSC = 1.2MHｚ IOUT = 10mA ⇒ 1.0A
L = LTF5022T-4R7N2R0-LC(4.7μH) CIN = 10μ F(GRM155R61A106M) L = LTF5022T-4R7N2R0-LC(4.7μH) CIN = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
IOUT : 1.0A
IOUT : 1.0A
IOUT : 10mA
IOUT : 10mA
VOUT : 100mV/div
VOUT : 100mV/div
50μs/div
50μs/div
XC9260A33C
XC9261A33C
V IN = 5.0V V OUT = 3.3V f OSC = 1.2MHｚ IOUT = 10mA ⇒ 1.0A
V IN = 5.0V V OUT = 3.3V f OSC = 1.2MHｚ IOUT = 10mA ⇒ 1.0A
L = LTF5022T-4R7N2R0-LC(4.7μ H) CIN = 10μ F(GRM155R61A106M) L = LTF5022T-4R7N2R0-LC(4.7μ H) CIN = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
CL = 10μ F(GRM155R61A106M)
IOUT : 1.0A
IOUT : 1.0A
IOUT : 10mA
IOUT : 10mA
VOUT : 200mV/div
VOUT : 200mV/div
50μs/div
22/28
50μs/div
XC9260/XC9261
Series
■PACKAGING INFORMATION
●USP-6C (unit:mm)
1.8±0.05
1pin INDENT
0.05
0.30±0.05
(0.1)
0.20±0.05
(0.50)
0.10±0.05
1.4±0.05
●SOT-89-5 (unit:mm)
4.5±0.1
+0.15
1.6 -0.2
0.42±0.06
0.42±0.06
0.42±0.06
2
5
+0.03
0.4 -0.02
4
Φ1.0
1
0.42±0.06
2
3
0.47±0.06
0.42±0.06
0.4
+0.03
-0.02
（1.7)
（1.6)
1.5±0.1
1.5±0.1
23/28
XC9260/XC9261Series
■PACKAGING INFORMATION (Continued)
●USP-6C
24/28
Reference Pattern Layout (unit: mm)
●USP-6C Reference Metal Mask Design (unit: mm)
XC9260/XC9261
Series
■PACKAGING INFORMATION (Continued)
●
SOT-89-5 Power Dissipation
Power dissipation data for the SOT-89-5 is shown in this page.
The value of power dissipation varies with the mount board conditions.
Please use this data as the reference data taken in the following condition.
1. Measurement Condition
Condition:
Ambient:
Soldering:
Board:
Mount on a board
Natural convection
Lead (Pb) free
2
Dimensions 40 x 40 mm (1600 mm in one side)
Copper (Cu) traces occupy 50% of the board area
In top and back faces
Thickness:
1.6mm
5 x 0.8 Diameter
2.5
Through-hole
Glass Epoxy (FR-4)
40.0
Material:
28.9
Package heat-sink is tied to the copper traces
Evaluation Board (Unit: mm)
2. Power Dissipation vs. Ambient Temperature (105℃)
Board Mount (Tjmax=125℃)
Ambient Temperature (℃)
Power Dissipation Pd (mW)
25
1300
105
260
Thermal Resistance (℃/W)
76.92
Power
Dissipation: Pd (mW)
許容損失Pd（mW）
Pd vs. Ta
Pd-Ta特性グラフ
1400
1200
1000
800
600
400
200
0
25
45
65
85
周囲温度Ta（℃）
Ambient
Temperature: Ta (℃)
105
125
25/28
XC9260/XC9261Series
■PACKAGING INFORMATION (Continued)
●
USP-6C Power Dissipation
Power dissipation data for the USP-6C is shown in this page.
The value of power dissipation varies with the mount board conditions.
Please use this data as the reference data taken in the following condition.
1. Measurement Condition
Condition:
Ambient:
Soldering:
Board:
Mount on a board
Natural convection
Lead (Pb) free
2
Dimensions 40 x 40 mm (1600 mm in one side)
Copper (Cu) traces occupy 50% of the board area
In top and back faces
Package heat-sink is tied to the copper traces
Material:
Thickness:
Through-hole
Glass Epoxy (FR-4)
1.6mm
4 x 0.8 Diameter
Evaluation Board (Unit: mm)
2. Power Dissipation vs. Ambient Temperature (105℃)
Board Mount (Tjmax=125℃)
Ambient Temperature (℃)
Power Dissipation Pd (mW)
25
1000
105
200
Thermal Resistance (℃/W)
100.00
Power
Dissipation: Pd (mW)
許容損失Pd（mW）
Pd vs. Ta
Pd-Ta特性グラフ
1200
1000
800
600
400
200
0
25
26/28
45
65
85
周囲温度Ta（℃）
Ambient
Temperature: Ta (℃)
105
125
XC9260/XC9261
Series
■MARKING RULE
① represents products series
SOT89-5
⑤
④
4
③
2
②
5
MARK
PRODUCT SERIES
A
B
XC9260A*****-G, XC9261A*****-G
XC9260B*****-G, XC9261B*****-G
①
② represents integer and oscillation frequency of the output voltage
MARK
1
2
3
USP-6C
②
⑤
③
3
④
2
①
1
VOUT(V)
XC9260 Series
XC9261 Series
fOSC=1.2MlHz
fOSC=3.0MlHz
fOSC=1.2MlHz
fOSC=3.0MlHz
0.x
1.x
A
B
E
F
N
P
U
V
2.x
C
L
R
X
3.x
D
M
T
Y
6
5
4
③ represents decimal number of the output voltage
VOUT(V)
MARK
VOUT(V)
MARK
X.00
X.10
0
1
X.05
X.15
A
B
X.20
2
X.25
C
X.30
3
X.35
D
X.40
4
X.45
E
X.50
5
X.55
F
X.60
6
X.65
H
X.70
7
X.75
K
X.80
8
X.85
L
X.90
9
X.95
M
④⑤ represents production lot number
01～09, 0A～0Z, 11～9Z, A1～A9, AA～AZ, B1～ZZ in order.
(G, I, J, O, Q, W excluded)
* No character inversion used.
27/28
XC9260/XC9261Series
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 not developed, 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.
28/28