XCL101
Series
Inductor Built-in Step-up “micro DC/DC” Converter
ETR28004-003
☆GreenOperation
Compatible
■GENERAL
DESCRIPTION
The XCL101 series is a synchronous step-up micro DC/DC converter which integrates an inductor and a control IC in one
tiny package (2.5mm×2.0mm, H=1.0mm). A stable step-up power supply is configured using only two capacitors connected
externally. An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the
circuit wiring. The XCL101 series can be used in applications that start from a single alkaline or nickel-metal hydride battery
because the input voltage range is 0.9V ~ 5.5V. The output voltage can be set from 1.8V to 5.0V (±2.0%) in steps of 0.1V.
PFM control enables a low quiescent current, making these products ideal for portable devices that require high efficiency.
The XCL101 features a load disconnect function to break continuity between the input and output at shutdown (XCL101A),
and a bypass mode function to maintain continuity between the input and output (XCL101C).
■APPLICATIONS
●Wearable
devices
●Mobile
phones, Smart phones
●Mouses,
Keyboards
●Remote
controls
●Portable
information devices
●Game
consoles
■FEATURES
Input Voltage Range
Output Voltage Range
Output Current
Supply Current
Control Method
PFM Switching Current
Functions
:
:
:
:
:
:
:
0.9V~5.5V
1.8V~5.0V (±2.0%) 0.1V increment
100mA＠V
OUT
=3.3V, V
BAT
=1.8V (TYP.)
6.3μA (V
BAT
=
V
OUT
+0.5V)
PFM Control
350mA
Load Disconnection Function or
Bypass Mode Function
Ceramic Capacitor Compatible
Operating Ambient Temperature
Package
Environmentally Friendly
:
:
:
-40ºC ~ +85ºC
CL-2025, CL-2025-02
EU RoHS Compliant, Pb Free
■TYPICAL
APPLICATION CIRCUIT
XCL101 Series
■
TYPICAL PERFORMANCE
CHARACTERISTICS
XCL101C501BR-G
7 L1
1 Lx
V
OUT
C
L
10μF
2 V
OUT
3 V
BAT
8 L2
V
IN
C
IN
10μF
V
SS
6
Efficiency:EFFI(%)
100
80
60
40
20
V
OUT
=5.0V
4.2V
3.6V
V
IN
= 3.0V
NC 5
CE 4
V
CE
0
0.01
(TOP VIEW)
0.1
1
10
100
1000
Output Current:I
OUT
(mA)
“L1 and Lx”, “L2 and V
BAT
” is connected by PCB pattern.
1/19
XCL101
Series
■BLOCK
DIAGRAM
XCL101A / XCL101C
L2
Inductor
L1
Load
Disconnection
Controller
L
X
R
FB1
C
FB
PFM
Comparator
Current
Error
Sense
Amp.
Logic
PFM
Controller
Logic
Synch
Buffer
Drive
V
OUT
R
FB2
V
SS
V
REF
CE
CE and Bypass
Controller
Logic
V
DD
V
DD
MAX
V
BAT
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
■PRODUCTION
CLASSIFICATION
●Ordering
Information
XCL101①②③④⑤⑥-⑦
(*1)
PFM control
DESIGNATOR
①
ITEM
Product Type
SYMBOL
A
C
18½50
1
BR-G
(*2)
ER-G
(*3)
Load Disconnection
V
BAT
Bypass
Output Voltage
e.g. V
OUT
=1.8V
⇒ ②=1、③=8
1.2MHz
CL-2025 (3,000/Reel)
CL-2025-02 (3,000/Reel)
DESCRIPTION
②③
Output Voltage
Oscillation Frequency
Package
(Order Unit)
④
⑤⑥-⑦
(*1)The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
(*2) BR-G is storage temperature range "-40
℃
~ + 105
℃".
(*3) ER-G is storage temperature range "-40
℃
~ + 125
℃".
2/19
XCL101
Series
■PIN
CONFIGURATION
7 L1
V
SS
6
NC 5
CE 4
1 L
X
2 V
OUT
3 V
BAT
* If the dissipation pad needs to be connected to other pins, it should be
connected to the V
SS
pin.
* Please refer to pattern layout page for the connecting to PCB.
8 L2
(BOTTOM VIEW)
■PIN
ASSIGNMENT
PIN NUMBER
1
2
3
4
5
6
7
8
PIN NAME
L
X
V
OUT
V
BAT
CE
NC
V
SS
L1
L2
FUNCTIONS
Switching
Output Voltage
Power Input
Chip Enable
No Connection
Ground
Inductor Electrodes
■CE
PIN FUNCTION
PIN NAME
SIGNAL
H
CE
L
STATUS
Operation (All Series)
XCL101A Series：Stand-by
XCL101C Series：Bypass Mode
* Please do not leave the CE pin open.
■
ABSOLUTE MAXIMUM RATINGS
Ta=25ºC
PARAMETER
V
BAT
Pin Voltage
L
X
Pin Voltage
V
OUT
Pin Voltage
CE Pin Voltage
L
X
Pin Current
Power Dissipation
Operating Ambient Temperature
Storage
Temperature
(*3)
CL-2025
CL-2025-02
SYMBOL
V
BAT
V
LX
V
OUT
V
CE
I
LX
Pd
Topr
Tstg
RATINGS
-0.3
½
+7.0
-0.3
½
V
OUT
+0.3 or +7.0
(*1)
-0.3
½
+7.0
-0.3
½
+7.0
700
1000
(*2)
- 40
½
+85
- 40
½
+105
- 40
½
+125
UNITS
V
V
V
V
mA
mW
ºC
ºC
ºC
All voltages are described based on the GND.
(*1) The maximum value should be either VOUT+0.3V or +7.0V in the lowest.
(*2) The power dissipation figure shown is PCB mounted (40mm x 40mm, t=1.6mm, Glass Epoxy FR-4).
(*3) Storage temperature, are divided by the product specification of the package.
3/19
XCL101
Series
■ELECTRICAL
CHARACTERISTICS
XCL101Axx1BR-G/XCL101Axx1ER-G
Ta=25 ºC
PARAMETER
Input Voltage
Output Voltage
Operation Start Voltage
Operation Hold Voltage
Supply Current
Input Pin Current
Stand-by Current
L
X
Leak Current
PFM Switching Current
Maxixmum On Time
L
X
SW “Pch” ON
Resistance
(*3)
L
X
SW “Nch” ON
Resistance
(*4)
SYMBOL
V
BAT
V
OUT(E)(*2)
V
ST1
V
HLD
Iq
I
BAT
I
STB
I
LXL
I
PFM
t
ONMAX
R
LXP
R
LXN
-
V
PULL
=1.5V, Voltage to strat oscillation
while V
OUT
is decreasing
I
OUT
=1mA
R
L
=1kΩ
Oscillation stops, V
BAT
=V
CE
=1.5V
V
OUT
=V
OUT(T) (*1)
+0.5V
V
OUT
=V
OUT(T) (*1)
+0.5V
V
BAT
=V
LX
=V
OUT(T) (*1)
, V
OUT
=V
CE
=0V
V
BAT
=V
LX
=V
OUT(T) (*1)
, V
OUT
=V
CE
=0V
I
OUT
=3mA
V
PULL
=1.5V, V
OUT
=V
OUT(T) (*1)
×0.98V
V
BAT
=V
CE
=V
LX
=V
OUT(E) (*2)
+ 0.5V,
I
OUT
=200mA
V
BAT
=V
OUT(E) (*2)
=3.3V, V
OUT
=1.7V
V
BAT
=V
PULL
=1.5V
V
OUT
=V
OUT(T) (*1)
×0.98V
While V
CE
= 0.3→0.75V,
Voltage to start oscillation
V
BAT
=V
PULL
=1.5V
V
OUT
=V
OUT(T) (*1)
× 0.98V
While V
CE
=0.75
→
0.3V,
Voltage to stop oscillation
V
BAT
=V
CE
=V
LX
=V
OUT
=5.5V
V
BAT
=V
LX
=V
OUT
=5.5V, V
CE
=0V
Test Frequency=1MHz
∆T=+40℃
-
-
-
-
295
3.1
-
-
CONDITIONS
MIN.
-
TYP.
-
<E1>
-
0.7
<E2>
0.25
0.1
0.1
350
4.6
<E3>
0.6
-
1.0
1.0
1.0
405
6.0
0.9
-
MAX.
5.5
UNITS
V
V
V
V
μA
μA
μA
μA
mA
μs
Ω
Ω
CIRCUIT
-
①
②
②
③
③
④
⑤
②
①
⑦
⑧
CE “High” Voltage
V
CEH
0.75
-
5.5
V
①
CE “Low” Voltage
V
CEL
V
SS
-
0.3
V
①
CE “High” Current
CE “Low” Current
Inductance Value
(Inductor) Rated Current
I
CEH
I
CEL
L
I
DC
-0.1
-0.1
-
-
-
-
4.7
700
0.1
0.1
-
-
μA
μA
μH
mA
①
①
-
-
Unless otherwise stated, V
BAT
= V
CE
= 1.5V
(*1)
V
OUT(T)
=Nominal Output Voltage
(*2)
V
OUT(E)
=Effective Output Voltage
The actual output voltage value V
OUT(E)
is the PFM comparator threshold voltage in the IC. Therefore, the DC/DC circuit output
voltage, including the peripheral components, is boosted by the ripple voltage average value. Please refer to the characteristic
example.
(*3)
L SW “Pch” ON resistance =（V -V
X
LX OUT
pin measurement voltage） / 200mA
(*4)
L SW “Nch” ONresistance measurement method is shown in the measurement circuit diagram.
X
4/19
XCL101
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
XCL101Cxx1BR-G/XCL101Cxx1ER-G
Ta=25 ºC
PARAMETER
Input Voltage
Output Voltage
Operation Start Voltage
Operation Hold Voltage
Supply Current
Input Pin Current
Bypass Mode Current
PFM Switching Current
Maxixmum On Time
L
X
SW “Pch” ON
Resistance
(*3)
L
X
SW “Nch” ON
Resistance
(*4)
SYMBOL
V
BAT
V
OUT(E)(*2)
V
ST1
V
HLD
Iq
I
BAT
I
BYP
I
PFM
t
ONMAX
R
LXP
R
LXN
-
V
PULL
=1.5V, Voltage to strat oscillation
while V
OUT
is decreasing
I
OUT
=1mA
R
L
=1kΩ
Oscillation stops,
V
OUT
=V
OUT(T)
+0.5V
(*1)
CONDITIONS
MIN.
-
TYP.
-
<E1>
MAX.
5.5
UNITS
V
V
CIRCUIT
-
①
②
②
③
③
⑥
②
①
⑦
⑧
-
-
-
0.7
<E2>
0.9
-
V
V
μ
A
V
BAT
=V
CE
=1.5V, V
OUT
=V
OUT(E)(*2)
+0.5V
V
BAT
=V
LX
=5.5V, V
CE
=0V
I
OUT
=3mA
V
PULL
=1.5V, V
OUT
=V
OUT(T)(*1)
×0.98V
V
BAT
=V
LX
=V
CE
=V
OUT(E)(*2)
+ 0.5V,
I
OUT
=200mA
V
BAT
=V
OUT(E)(*2)
=3.3V, V
OUT
=1.7V
V
BAT
=V
PULL
=1.5V
V
OUT
=V
OUT(T)(*1)
×0.98V
While V
CE
=0.3→0.75V,
Voltage to start oscillation
V
BAT
=V
PULL
=1.5V
V
OUT
=V
OUT(T) (*1)
× 0.98V
While V
CE
=0.75
→
0.3V,
Voltage to stop oscillation
V
BAT
=V
CE
=V
LX
=V
OUT
=5.5V
V
BAT
=V
LX
=V
OUT
=5.5V, V
CE
=0V
Test Frequency=1MHz
∆T=+40℃
-
-
295
3.1
0.25
3.5
350
4.6
<E3>
1.0
6.1
405
6.0
μ
A
μ
A
mA
μ
s
Ω
-
0.6
-
Ω
CE “High” Voltage
V
CEH
0.75
-
5.5
V
①
CE “Low” Voltage
V
CEL
V
SS
-
0.3
V
①
CE “High” Current
CE “Low” Current
Inductance Value
(Inductor) Rated Current
I
CEH
I
CEL
L
I
DC
-0.1
-0.1
-
-
-
-
4.7
700
0.1
0.1
-
-
μ
A
μ
A
μ
H
mA
①
①
-
-
Unless otherwise stated, V
BAT
= V
CE
= 1.5V
(*1)
V
OUT(T)
=Nominal Output Voltage
(*2)
V
OUT(E)
=Effective Output Voltage
The actual output voltage value V
OUT(E)
is the PFM comparator threshold voltage in the IC. Therefore, the DC/DC circuit output
voltage, including the peripheral components, is boosted by the ripple voltage average value. Please refer to the characteristic
example.
(*3)
L
X
SW “Pch” ON resistance =（V
LX
-V
OUT
pin measurement voltage） / 200mA
(*4)
L SW “Nch” ONresistance measurement method is shown in the measurement circuit diagram.
X
5/19
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