XCL219/XCL220
Series
1.0A Inductor Built-in Step-Down “micro DC/DC” Converters
ETR28010-001
☆GreenOperationCompatible
■GENERAL
DESCRIPTION
The XCL219/XCL220 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control
IC in one tiny package (2.0mm×2.5mm, h=1.0mm). An internal coil simplifies the circuit and enables minimization of noise and
other operational trouble due to the circuit wiring. A wide operating voltage range of 2.5V to 5.5V enables support for
applications that require an internally fixed output voltage (0.8V to 3.6V). The XCL219/XCL220 series uses synchronous
rectification at an operating frequency of 3.0MHz. The XCL219/XCL220 series uses HiSAT-COT
(*)
synchronous rectification.
HiSAT-COT+PWM control (XCL219) or HiSAT-COT+automatic PWM/PFM switching control (XCL220) can be selected.
The series have a high speed soft-start 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 driver transistor is forced OFF when input voltage becomes 2.0V or lower. When CE=Low,
the integrated C
L
discharge function which enables the electric charge at the output capacitor C
L
to be discharged via the internal
discharge switch located between the L
X
and V
SS
pins. The power consumption will be less than 1.0μA.
(*)
HiSAT-COT is an original Torex term for High Speed Transient Response.
■APPLICATIONS
●Note
Book PC
●Tablet
PC
●SSD(Solid
State Drive)
●Mobile
phone
●Digital
still camera
●Portable
game machine
■FEATURES
Input Voltage
Output Voltage
Oscillation Frequency
Output Current
Efficiency
Control Methods
: 2.5V½5.5V
: 0.8V½3.6V(±2.0%)
: 3.0MHz
: 1.0A
: 93% (V
IN
=5.0V, V
OUT
=3.3V/300mA)
: HiSAT-COT
100% Duty Cycle
HiSAT-COT+PWM (XCL219)
HiSAT-COT+PWM/PFM (XCL220)
: Thermal Shut Down
Current Limit Circuit (Drop)
Short Circuit Protection (Latch)
: Soft-start Circuit Built-in
UVLO
C
L
Discharge
: Low ESR Ceramic Capacitor
Circuit Protection
Functions
Output Capacitor
Operating Ambient Temperature : -40℃½+105℃
Package
: CL-2025-02
Environmental Friendly
: EU RoHS Compliant, Pb Free
■TYPICAL
APPLICATION CIRCUIT
■
TYPICAL PERFORMANCE
CHARACTERISTICS
XCL219/XCL220 (V
OUT
=3.3V)
100
7
1 Lx
2 AGND
1.0A
C
L
10μF
80
XCL220
V
IN
6
PGND 5
CE 4
8
C
IN
4.7μF
Efficiency : EFFI (%)
60
3 V
OUT
40
XCL219
20
V
IN
=5.0V
0
0.1
1
10
100
Output Current : I
OUT
(mA)
1000
1/20
XCL219/XCL220
Series
■BLOCK
DIAGRAM
L2
Inductor
L1
V
OUT
R1
C
FB
Phase
Compensation
R2
Error
Amp.
Comparator
Short
Protection
High Side
Current Limit
V
IN
AGND
S
Q
Vref with
Soft Start
R
Logic
Synch
Buffer
Drive
Lx
CE
CE Control Logic,
UVLO
Thermal Shutdown
Minimum
On Time
Generator
V
IN
V
OUT
PWM/PFM
Selector
PGND
* The XCL219 offers a fixed PWM control, a Control Logic of PWM/PFM Selector is fixed at “PWM” internally.
The XCL220 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.
■PRODUCT
CLASSIFICATION
●Ordering
Information
XCL219①②③④⑤⑥-⑦
XCL220①②③④⑤⑥-⑦
DESIGNATOR
①
PWM
PWM/PFM Automatic switching control
ITEM
SYMBOL
Type
B
DESCRIPTION
Refer to Selection Guide
Output Voltage options
e.g.)1.2V
→
②=1, ③=2
1.25V
→
②=1, ③=C
②③
Output Voltage
08½36
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
④
⑤⑥-⑦
(*1)
(*1)
Oscillation Frequency
Package (Order Unit)
3
FR-G
3.0MHz
CL-2025-02 (3,000pcs/Reel)
The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
●Selection
Guide
TYPE
B
OUTPUT
VOLTAGE
Fixed
C
L
AUTO-
DISCHARGE
Yes
LATCH or
SHORT
PROTECTION
Yes
UVLO
Yes
CHIP
ENABLE
Yes
CURRENT
LIMIT
Yes
SOFT-
START
Fixed
THERMAL
SHUTDOWN
Yes
2/20
XCL219/XCL220
Series
■PIN
CONFIGURATION
* It should be connected the pin No.2 and 5 to the GND pin.
* If the dissipation pad needs to be connected to other pins, it should be
connected to the GND pin.
* Please refer to pattern layout page for the connecting to PCB.
BOTTOM VIEW
■PIN
ASSIGNMENT
PIN NUMBER
1
2
3
4
5
6
7
8
PIN NAME
Lx
AGND
V
OUT
CE
PGND
V
IN
L1
L2
FUNCTIONS
Switching Output
Analog Ground
Fixed Output Voltage PIN
Chip Enable
Power Ground
Power Input
Inductor Electrodes
Inductor Electrodes
■FUNCTION
TABLE
CE PIN Function
PIN NAME
CE
SIGNAL
Low
High
STATUS
Stand-by
Active
* Please do not leave the CE pin open.
■ABSOLUTE
MAXIMUM RATINGS
Ta=25℃
PARAMETER
V
IN
Pin Voltage
L
X
Pin Voltage
V
OUT
Pin Voltage
CE Pin Voltage
Power Dissipation
Operating Ambient Temperature
Storage Temperature
SYMBOL
V
IN
V
Lx
V
out
V
CE
Pd
Topr
T
stg
RATINGS
-0.3 ~ + 6.2
- 0.3 ~ V
IN
+ 0.3 or + 6.2
(*1)
- 0.3 ~ V
IN
+ 0.3 or + 4.0
(*2)
- 0.3 ~ + 6.2
1000
(*3)
- 40 ~ + 105
- 55 ~ + 125
UNITS
V
V
V
V
mW
℃
℃
All voltages are described based on the GND (AGND and PGND) pin.
(*1)
(*2)
(*3)
The maximum value should be either V
IN
+0.3 or +6.2 in the lowest voltage
The maximum value should be either V
IN
+0.3 or +4.0 in the lowest voltage
The power dissipation figure shown is PCB mounted (40mm×40mm, t=1.6mm, Glass Epoxy FR-4).
Please refer to page 11 for details.
3/20
XCL219/XCL220
Series
■ELECTRICAL
CHARACTERISTICS
●XCL219BxxxFR-G/XCL220BxxxFR-G
PARAMETER
Output Voltage
Operating Voltage Range
Maximum Output Current
UVLO Voltage
(*2)
Quiescent Current
(XCL220)
Quiescent Current
(XCL219)
Stand-by Current
Minimum ON time
(*2)
Thermal Shutdown
Thermal shutdown
Hysteresis
LxSW ”H” ON
Resistance
LxSW ”L” ON
Resistance
(*4)
LxSW ”H” Leakage
Current
LxSW ”L” Leakage
Current
Current Limit
(*5)
Output Voltage
Temperature
Characteristics
CE”H” Voltage
CE”L” Voltage
CE”H” Current
CE”L” Current
Soft-start Time
Short Protection
Threshold Voltage
C
L
Discharge
Inductance
Inductor Rated Current
NOTE:
(*1)
Ta=25℃
CONDITIONS
When connected to external conponets,
I
OUT
=30mA
MIN.
<E-1>
2.5
When connected to external components,
V
IN
=<C-1>
V
out
=0.6V,
Voltage which Lx pin holding ”L” level
(*6)
V
OUT
=V
OUT(E)
×1.1V
V
OUT
=V
OUT(E)
×1.1V
V
CE
=0V
When connected to external components,
V
IN
=V
CE
=<C-1>, I
OUT
=1mA
1000
1.35
-
-
-
<E-5>
-
-
V
OUT
=0.6V, I
LX
=100mA
(*3)
V
OUT
=V
OUT(T)
× 1.1V, I
LX
=100mA
(*3)
V
IN
=5.5V, V
CE
=0V, V
OUT
=0V, V
LX
=5.5V
V
IN
=5.5V, V
CE
=0V, V
OUT
=0V, V
LX
=0V
V
OUT
=0.6V, I
Lx
until Lx pin oscillates
I
OUT
=30mA
-40℃≦Topr≦85℃
V
OUT
=0.6V, Applied voltage to V
CE,
Voltage changes Lx to “H” level
(*6)
V
FB
=0.6V, Applied voltage to V
CE,
Voltage changes Lx to “L” level
(*6)
V
IN
=5.5V, V
CE
=5.5V, V
OUT
=0V
V
IN
=5.5V, V
CE
=0V, V
OUT
=0V
V
CE
=0V→5.0V, V
OUT
=V
OUT(T)
V × 0.9
After "H" is fed to CE, the time by
when clocks are generated at Lx pin.
Sweeping V
OUT
, V
OUT
voltage which Lx
becomes “L” level
(*6)
V
CE
=0V, V
OUT
=4.0V
Test Freq.=1MHz
∆T=+40deg
-
-
-
-
1.3
-
TYP.
<E-2>
-
-
2.00
25
400
0.0
<E-6>
150
30
0.24
0.16
0.0
0.0
1.5
±100
MAX.
<E-3>
5.5
-
2.48
40
825
1.0
<E-7>
-
-
0.37
0.30
30.0
1.0
2.5
-
UNITS
V
V
mA
V
μA
μA
μA
ns
℃
℃
Ω
Ω
μA
μA
A
ppm/℃
CIRCUIT
①
①
①
③
②
②
②
①
①
①
④
④
⑤
⑤
⑥
①
SYMBOL
V
OUT
V
IN
I
OUTMAX
V
UVLO
I
q
I
q
I
STB
t
ONmin
T
TSD
T
HYS
R
LXH
R
LXL
I
LeakH
I
LeakL
I
LIMH
Δ
OUT
/
V
topr)
(V
OUT
・Δ
V
CEH
V
CEL
I
CEH
I
CEL
t
SS
1.4
AGND
-0.1
-0.1
0.10
-
-
-
-
0.30
5.5
0.3
0.1
0.1
0.50
V
V
μA
μA
ms
③
③
⑤
⑤
③
V
SHORT
R
DCHG
L
I
DC
0.17
50
-
-
0.27
210
1.0
1.3
0.37
300
-
-
V
Ω
μH
A
③
⑦
-
-
Unless otherwise stated, V
IN
=5.0V, V
CE
=5.0V, V
OUT(T)
=Nominal Voltage
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)
(*3)
(*4)
(*5)
(*6)
Including UVLO detect voltage, hysteresis operating voltage range for UVLO release voltage.
R
LXH
=(V
IN
- Lx pin measurement voltage) / 100mA, R
LXL
=Lx pin measurement voltage / 100mA
Design value for the XCL220 series
Current limit denotes the level of detection at peak of coil current.
"H"=V
IN
½V
IN
- 1.2V, "L"=- 0.1V½+ 0.1V
4/20
XCL219/XCL220
Series
■ELECTRICAL
CHARACTERISTICS
●SPEC
Table (V
OUT
, t
ONmin
)
NOMINAL
OUTPUT
VOLTAGE
V
OUT(T)
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
V
OUT
<E-1>
MIN.
0.784
0.833
0.882
0.931
0.980
1.029
1.078
1.127
1.176
1.225
1.274
1.323
1.372
1.421
1.470
1.519
1.568
1.617
1.666
1.715
1.764
1.813
1.862
1.911
1.960
2.009
2.058
2.107
2.156
<E-2>
TYP.
0.800
0.850
0.900
0.950
1.000
1.050
1.100
1.150
1.200
1.250
1.300
1.350
1.400
1.450
1.500
1.550
1.600
1.650
1.700
1.750
1.800
1.850
1.900
1.950
2.000
2.050
2.100
2.150
2.200
<E-3>
MAX.
0.816
0.867
0.918
0.969
1.020
1.071
1.122
1.173
1.224
1.275
1.326
1.377
1.428
1.479
1.530
1.581
1.632
1.683
1.734
1.785
1.836
1.887
1.938
1.989
2.040
2.091
2.142
2.193
2.244
<C-1>
V
IN
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.75
2.83
2.92
3.00
3.08
3.17
3.25
3.33
3.42
3.50
3.58
3.67
t
ONmin
f
OSC
=3.0MHz
<E-5> <E-6> <E-7>
MIN.
TYP.
MAX.
71
72
73
74
86
91
95
99
104
108
112
117
121
125
130
134
138
140
140
140
140
140
140
140
140
140
140
140
140
119
121
122
123
123
130
136
142
148
154
160
167
173
179
185
191
198
200
200
200
200
200
200
200
200
200
200
200
200
166
169
171
172
160
169
177
185
193
201
209
217
225
233
241
249
257
260
260
260
260
260
260
260
260
260
260
260
260
NOMINAL
OUTPUT
VOLTAGE
V
OUT(T)
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.75
2.80
2.85
2.90
2.95
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.60
V
OUT
<E-1>
MIN.
2.205
2.254
2.303
2.352
2.401
2.450
2.499
2.548
2.597
2.646
2.695
2.744
2.793
2.842
2.891
2.940
2.989
3.038
3.087
3.136
3.185
3.234
3.283
3.332
3.381
3.430
3.479
3.528
<E-2>
TYP.
2.250
2.300
2.350
2.400
2.450
2.500
2.550
2.600
2.650
2.700
2.750
2.800
2.850
2.900
2.950
3.000
3.050
3.100
3.150
3.200
3.250
3.300
3.350
3.400
3.450
3.500
3.550
3.600
<E-3>
MAX.
2.295
2.346
2.397
2.448
2.499
2.550
2.601
2.652
2.703
2.754
2.805
2.856
2.907
2.958
3.009
3.060
3.111
3.162
3.213
3.264
3.315
3.366
3.417
3.468
3.519
3.570
3.621
3.672
<C-1>
V
IN
3.75
3.83
3.92
4.00
4.08
4.17
4.25
4.33
4.42
4.50
4.58
4.67
4.75
4.83
4.92
5.00
5.08
5.17
5.25
5.33
5.42
5.50
5.50
5.50
5.50
5.50
5.50
5.50
t
ONmin
f
OSC
=3.0MHz
<E-5> <E-6> <E-7>
MIN.
TYP.
MAX.
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
142
144
146
148
151
153
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
203
206
209
212
215
218
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
260
264
268
272
276
280
284
■TYPICAL
CIRCUIT
VALUE
7
1 Lx
C
L
10μF
PRODUCT NUMBER
LMK105BBJ475MVLF(Taiyo Yuden)
LMK107BJ475KA (TaiyoYuden)
C1608X5R1A475K (TDK)
C2012X7R1A475M(TDK)
LMK105CBJ106MVLF(Taiyo Yuden)
LMK107BBJ106MALT (TaiyoYuden)
C1608X5R1A106K (TDK)
C2012X7R1A106M(TDK)
V
IN
6
PGND 5
CE 4
8
C
IN
4.7μF
C
IN
10V/4.7μF
2 AGND
3 V
OUT
1.0A
C
L
10V/10μF
NOTE:
The integrated Inductor can be used only for this DC/DC
converter. Please do not use this inductor for other
reasons.
5/20
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