Document
XCL210 Series
ETR28009-005a
50mA/200mA Inductor Built-in Step-Down “micro DC/DC” Converters
☆Green Operation Compatible
■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 in increments of 0.05V. During stand-by, all circuits are shutdown to reduce current consumption to as low as 0.1μA 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 detect Voltage or lower.
The XCL210 integrate CL discharge function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge switch located between the LX and VSS pins. When the devices enter stand-by mode, output voltage quickly returns to the VSS level as a result of this function.
■APPLICATIONS
● Wearable Devices ● Smart meters ● Bluetooth units ● Energy Harvest devices ● Backup power supply circuits ● Portable game consoles ● Devices with 1 Lithium cell
■FEATURES
Input Voltage
: 2.0V ~ 6.0V
Output Voltage
: 1.0V ~ 4.0V (±2.0%)
Control Methods
: PFM control
Output Current
: 200mA (Type A/C)
50mA (Type B/D)
Supply Current
: 0.5μA
High Efficiency Function
: 93% (VIN=3.6V,VOUT=3.0V/100μA) : UVLO
Short Circuit Protection
Capacitor
CL Discharge(Type C/D) : Low ESR Ceramic Capacitor
Operating Ambient Temperature : -40℃ ~ 85℃
Packages
: CL-2025-02
Environmentally Friendly
: EU RoHS Compliant, Pb Free
■TYPICAL APPLICATION CIRCUIT
7
CL
50mA 22μ F
1 Lx 2 GND
VIN 6 NC 5
3 VOUT
CE 4
8
VIN
CIN 10μ F
■ TYPICAL PERFORMANCE CHARACTERISTICS
XCL210B301GR-G (VOUT=3.0V)
100
80
Efficiency : EFFI [%]
60
40
20
0 0.01
VIN=3.6V VIN=4.2V
0.1
1
10
100
Output Current : IOUT [mA]
1/25
XCL210 Series
■BLOCK DIAGRAM
XCL210 Series, Type A/B
L2 VOUT
CE VIN
Inductor
Short Protection
R1
CFB PFM
Comparator
Current Sense
R2 Vref
CE Controller Logic
PFM Controller
VDD
UVLO VIN Start Up
Controller
VDD
Synch Buffer Drive
* XCL210A and B type do not have CL Discharge function. * Diodes inside the circuits are ESD protection diodes and parasitic diodes.
L1
Lx GND
XCL210 Series, Type C/D
L2 VOUT
CE VIN
Inductor
R1
CL Discharge
R2
CFB
PFM Comparat
or
Short Protection
Current Sense
Vref
CE Controller Logic
PFM Controller
VDD
UVLO VIN Start Up
Controller
VDD
Synch Buffer Drive
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
L1
Lx GND
2/25
XCL210
Series
■PRODUCT CLASSIFICATION
●Ordering information XCL210①②③④⑤⑥-⑦ PFM control
DESIGNATOR
ITEM
SYMBOL
A
①
B Product Type
C
D
②③
Output Voltage
10.