XCL210
Series
50mA/200mA Inductor Built-in Step-Down “micro DC/DC” Converters
ETR28009-002
☆GreenOperationCompatible
■GENERAL
DESCRIPTION
The XCL210 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 2.0V to 6.0V enables support for applications that
require an internally fixed output voltage from 1.0V to 4.0V(Type A/B/C/D), 0.6V to 0.95V(Type F/H) in increments of 0.05V.
During stand-by, all circuits are shutdown to reduce currentconsumption to as low as 0.1
μA
or less.
With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS driver transistor is forced OFF when
input voltage becomes UVLO ditect Voltage or lower.
The XCL210 integrate 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. When the devices enter stand-by mode, output voltage
quickly returns to the V
SS
level as a result of this function.
■APPLICATIONS
●
●
●
●
●
●
●
Wearable Devices
Smart meters
Bluetooth units
Energy Harvest devices
Back up power supply circuits
Portable game consoles
Devices with 1 Lithium cell
■FEATURES
Input Voltage
Output Voltage
Control Methods
Output Current
Supply Current
High Efficiency
Function
:
:
:
:
:
:
:
Capacitor
Operating Ambient Temperature
Packages
Environmentally Friendly
:
:
:
:
2.0V~6.0V
1.0V~4.0V (±2.0%, Type A/B/C/D)
0.6V~0.95V (±2.0%, Type F/H)
PFM control
200mA(Type A/C)
50mA(Type B/D/F/H)
0.5
μA
93% (V
IN
=3.6V,V
OUT
=3.0V/100
μA
)
UVLO
Short Circuit Protection
C
L
Discharge(Type C/D/H)
Low ESR Ceramic Capacitor
-40℃ ~ +85℃
CL-2025-02
EU RoHS Compliant, Pb Free
■TYPICAL
APPLICATION CIRCUIT
■
TYPICAL PERFORMANCE
CHARACTERISTICS
XCL210B301GR-G(V
OUT
=3.0V)
100
7
1 Lx
2 GND
C
L
50mA
22μF
V
IN
6
NC 5
CE 4
8
V
IN
Efficiency : EFFI [%]
C
IN
10μF
80
60
3 V
OUT
40
20
VIN=3.6V
VIN=4.2V
0.1
1
10
Output Current : I
OUT
[mA]
100
0
0.01
1/26
XCL210
Series
■BLOCK
DIAGRAM
XCL210 Series, Type A/Type B/Type F
L2
Inductor
L1
V
OUT
R1
CFB
PFM
Comparator
Short
Protection
V
DD
Current
Sense
R2
Vref
PFM
Controller
Synch
Buffer
Drive
Lx
CE
V
DD
CE Controller Logic
V
IN
UVLO
VIN Start Up
Controller
GND
* XCL210A and B and F type do not have C
L
Discharge function.
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
XCL210 Series, Type C/Type D/Type H
L2
Inductor
L1
V
OUT
R1
CL
Discharge
R2
Vref
CFB
PFM
Comparator
Short
Protection
V
DD
Current
Sense
PFM
Controller
CE
V
DD
Synch
Buffer
Drive
Lx
CE Controller Logic
V
IN
UVLO
VIN Start Up
Controller
GND
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
2/26
XCL210
Series
■PRODUCT
CLASSIFICATION
●Ordering
information(Type A/B/C/D)
XCL210①②③④⑤⑥-⑦ PFM control
DESIGNATOR
ITEM
SYMBOL
A
B
C
D
DESCRIPTION
I
OUT
=200mA , Without C
L
Auto Discharge
I
OUT
=50mA Without C
L
Auto Discharge
I
OUT
=200mA , With C
L
Auto Discharge
I
OUT
=50mA, With C
L
Auto Discharge
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
①
Product Type
②③
Output Voltage
10½40
④
⑤⑥-⑦
(*1)
(*1)
Fixed number
1
GR-G
Fixed number
CL-2025-02 (3,000pcs/Reel)
Package (Order Unit)
The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
●Ordering
information(Type F/H)
XCL210①②③④⑤⑥-⑦ PFM control
DESIGNATOR
①
ITEM
Product Type
SYMBOL
F
H
DESCRIPTION
I
OUT
=50mA , Without C
L
Auto Discharge
I
OUT
=50mA , With C
L
Auto Discharge
Output voltage options
e.g.) 0.6V
→ ②
= 0
③
= 6
0.95V→
②
= 0
③
= M
0.05V increments :
0.65=H, 0.75=K, 0.85=L, 0.95=M
Fixed number
CL-2025-02 (3,000pcs/Reel)
②③
Output Voltage
06½0M
④
⑤⑥-⑦
(*1)
(*1)
Fixed number
Package (Order Unit)
1
GR-G
The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
3/26
XCL210
Series
■PIN
CONFIGURATION
L1
7
V
IN
NC
CE
6
5
4
8
L2
1
2
3
Lx
GN D
V
OUT
* The dissipation pad for the CL-2025-02 package should be solder-plated in
recommended mount pattern and metal masking so as to enhance mounting
strength and heat release.
The mount pattern should be connected to GND pin (No.2).
(BOTTOM VIEW)
■PIN
ASSIGNMENT
PIN NUMBER
1
2
3
4
5
6
7
8
PIN NAME
L
X
GND
V
OUT
CE
NC
V
IN
L1
L2
FUNCTIONS
Switching
Ground
Output Voltage
Chip Enable
No Connection
Power Input
Inductor Electrodes
Inductor Electrodes
■CE
PIN FUNCTION
PIN NAME
CE
SIGNAL
H
L
STATUS
Operation (All Types)
Standby (All Types)
* Please do not leave the CE pin open.
■ABSOLUTE
MAXIMUM RATINGS
Ta=25˚C
PARAMETER
V
IN
Pin Voltage
L
X
Pin Voltage
V
OUT
Pin Voltage
CE Pin Voltage
L
X
Pin Current
Power Dissipation
Operating Ambient Temperature
Storage Temperature
* All voltages are described based on the GND.
(*1)
(*2)
SYMBOL
V
IN
V
LX
V
OUT
V
CE
I
LX
Pd
Topr
Tstg
RATINGS
-0.3 ~ +7.0
-0.3 ~ V
IN
+0.3 or +7.0
-0.3 ~ +7.0
1000
1000
(*2)
-40 ~ +85
-55 ~ +125
(*1)
UNITS
V
V
V
V
mA
mW
˚C
˚C
-0.3 ~ V
IN
+0.3 or +7.0
(*1)
The maximum value is the lower of either V
IN
+ 0.3 or +7.0.
The power dissipation figure shown is PCB mounted (40mm×40mm, t=1.6mm, Glass Epoxy FR-4).
Please refer to page 15 for details.
4/26
XCL210
Series
■ELECTRICAL
CHARACTERISTICS
●XCL210Axx1GR-G,
without C
L
discharge function
PARAMETER
Input Voltage
Output Voltage
SYMBOL
V
IN
V
OUT(E) (*2)
-
Resistor connected with L
X
pin. Voltage which L
X
pin
changes “L” to “H” level while V
OUT
is decreasing.
V
CE
=V
IN
, V
OUT
=0V. Resistor connected with L
X
pin.
UVLO Release Voltage
V
UVLO(E)
Voltage which L
X
pin changes “L” to “H” level while
V
IN
is increasing.
UVLO Hysteresis
Voltage
Supply Current
Standby Current
L
X
SW “H” Leak
Current
L
X
SW “L” Leak Current
PFM Switching Current
Maximum
Duty Ratio
(*3)
Efficiency
(*4)
Efficiency
(*4)
Ta=25˚C
CONDITIONS
MIN.
2.0
TYP.
-
E1
MAX.
6.0
UNITS
V
V
CIRCUIT
①
②
1.65
1.80
1.95
V
②
V
CE
=V
IN
, V
OUT
=0V. Resistor connected with L
X
pin.
V
HYS(E)
V
UVLO(E)
- Voltage which L
X
pin changes “H” to “L”
level while V
IN
is decreasing.
Iq
I
STB
I
LEAKH
I
LEAKL
I
PFM
MAXDTY
EFFI
EFFI
EFFI
R
LXP
R
LXN
∆V
OUT
/
(V
OUT
・∆Topr)
V
IN
=V
CE
=V
OUT(T)
+0.5V
(*1)
, V
IN
=2.0V, if V
OUT(T)
≦1.5V
(*1)
0.11
0.15
0.24
V
②
, V
OUT
=V
OUT(T)
+0.5V
(*1)
, L
X
=Open.
-
-
-
260
100
-
-
-
-
-
E2
0.1
0.1
0.1
330
-
93
93
87
0.4
0.4
(*6)
1.0
1.0
1.0
400
-
-
-
-
0.65
-
μA
μA
μA
μA
mA
%
%
%
%
Ω
Ω
③
③
③
③
①
②
⑥
⑥
⑥
④
-
V
IN
=5.0V, V
CE
=V
OUT
=0V, L
X
=Open.
V
IN
=5.0V, V
CE
=V
OUT
=0V, V
LX
=0V.
V
IN
=5.0V, V
CE
=V
OUT
=0V, V
LX
=5.0V.
V
IN
=V
CE
=V
OUT(T)
+2.0V
(*1)
, I
OUT
=10mA.
V
IN
=V
OUT
=V
OUT(Ｔ)
×0.95V
(*1)
, V
CE
=1.2V
Resistor connected with L
X
pin.
V
IN
=V
CE
=5.0V, V
OUT(T)
=4.0V
(*1)
, I
OUT
=30mA.
V
IN
=V
CE
=3.6V, V
OUT(T)
=3.3V
(*1)
, I
OUT
=30mA.
Efficiency
(*4)
L
X
SW “Pch”
ON Resistance
(*5)
L
X
SW “Nch”
ON Resistance
Output Voltage
Temperature
Characteristics
CE “High” Voltage
V
IN
=V
CE
=3.6V, V
OUT(T)
=1.8V
(*1)
, I
OUT
=30mA.
V
IN
=V
CE
=5.0V, V
OUT
=0V, I
LX
=100mA.
V
IN
=V
CE
=5.0V.
-40℃≦Topr≦85℃.
V
OUT
=0V. Resistor connected with L
X
pin.
-
±100
-
ppm/℃
②
V
CEH
Voltage which L
X
pin changes “L” to “H” level while
V
CE
=0.2→1.5V.
V
OUT
=0V. Resistor connected with L
X
pin.
1.2
-
6.0
V
⑤
CE “Low” Voltage
CE “High” Current
CE “Low” Current
Short Protection
Threshold Voltage
Inductance Value
Inductor Rated Current
(*1)
(*2)
V
CEL
I
CEH
I
CEL
V
SHORT
L
I
DC_L
Voltage which L
X
pin changes “H” to “L” level while
V
CE
=1.5→0.2V.
V
IN
=V
CE
=5.0V, V
OUT
=0V, L
X
=Open.
V
IN
=5.0V, V
CE
=V
OUT
=0V, L
X
=Open.
Resistor connected with L
X
pin.
Voltage which L
X
pin changes “H” to “L” level while
V
OUT
= V
OUT(T)
+0.1V→0V
Test Frequency=1MHz
∆T=+40℃
(*1)
GND
-0.1
-0.1
0.4
-
-
-
-
-
0.5
8.0
600
0.3
0.1
0.1
0.6
-
-
V
μA
μA
V
μH
mA
⑤
⑤
⑤
②
.
Unless otherwise stated, V
IN
=V
CE
=5.0V
V
OUT(T)
=Nominal Output Voltage
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)
(*4)
(*5)
(*6)
Not applicable to the products with V
OUT(T)
< 2.15V since it is out of operational volatge range.
L
X
SW “Pch” ON resistance = (V
IN
– V
LX
pin measurement voltage) / 100mA
EFFI=[{ (Output Voltage)×(Output Current)] / [(Input Voltage)×(Input Current)}]×100
Designed value
5/26
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