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XCL202B081BR-G

Description
Switching Regulator/Controller,
CategoryPower/power management    The power supply circuit   
File Size781KB,22 Pages
ManufacturerTOREX
Websitehttp://www.torex.co.jp/chinese/
Environmental Compliance
Download Datasheet Parametric View All

XCL202B081BR-G Overview

Switching Regulator/Controller,

XCL202B081BR-G Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerTOREX
Reach Compliance Codecompli
XCL201/XCL202
Series
Inductor Built-in Step-Down “micro DC/DC” Converters
ETR2802-007
☆GreenOperation
Compatible
■GENERAL
DESCRIPTION
The XCL201/XCL201 series is a synchronous step-down 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 power supply with an output current of 400mA is configured using
only two capacitors connected externally.
Operating voltage range is from 2.0V to 6.0V. Output voltage is internally set in a range from 0.8V to 4.0V in increments of
0.05V. The device is operated by 1.2MHz, and includes 0.42Ω P-channel driver transistor and 0.52Ω N-channel switching
transistor. As for operation mode, the XCL201 series is PWM control, the XCL202 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, the device is shutdown to reduce current consumption to as low as 1.0μ or less. With the built-in UVLO
A
(Under Voltage Lock Out) function, the internal driver transistor is forced OFF when input voltage becomes 1.4V or lower.
The series provide short-time turn-on by the soft start function internally set in 0.25ms (TYP). The series integrate C
L
auto
discharge function which enables the electric charge stored at the output capacitor C
L
to be discharged via the internal auto-
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
●Mobile
phones, Smart phones
●Bluetooth
Headsets
●WiMAX
PDAs, MIDs, UMPCs
●Portable
game consoles
●Digital
cameras, Camcorders
●SSD(Solid
State Drive)
●PND(Portable
Navigation Device)
■FEATURES
Ultra Small
Input Voltage
Output Voltage
High Efficiency
Output Current
Oscillation Frequency
Maximum Duty Cycle
Output Capacitor
Function
: 2.5mm×2.0mm, h=1.0mm
: 2.0V ~ 6.0V
: 0.8V ~ 4.0V (±2.0%)
: 92%(V
IN
=4.2V,V
OUT
=3.3V)
: 400mA
: 1.2MHz (±15%)
: 100%
: Low ESR Ceramic
: Current Limiter Circuit
(Constant Current & Latching)
Soft-Start Circuit Built-In
C
L
Discharge
Control Methods
: PWM (XCL201)
PWM/PFM Auto (XCL202)
Operating Ambient Temperature : -40℃ ~ +85℃
Environmentally Friendly
: EU RoHS Compliant, Pb Free
■TYPICAL
APPLICATION CIRCUIT
XCL201/XCL202 Series
TYPICAL PERFORMANCE
CHARACTERISTICS
XCL201B331BR/XCL202B331BR
100
XCL202(PWM/PFM)
L1
L
X
V
IN
C
IN
4.7μF
80
Efficency:EFFI(%)
60
VIN= 5.5V
C
L
10μF
400mA
Vss
V
OUT
L2
Vss
CE
40
5.0V
XCL201(PWM)
20
4.2V
VOUT=3.3V
(TOP VIEW)
* “L1 and L
X
”, and “L2 and V
OUT
” is connected by wiring.
0
0.01
0.1
1
10
100
1000
Output Current:I
OUT
(mA)
1/22
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