XCL209 PDF даташит
Спецификация XCL209 изготовлена «Torex Semiconductor» и имеет функцию, называемую «400mA Inductor Built-in Step-Down micro DC/DC Converters». |
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Детали детали
Номер произв | XCL209 |
Описание | 400mA Inductor Built-in Step-Down micro DC/DC Converters |
Производители | Torex Semiconductor |
логотип |
22 Pages
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XCL208/XCL209 Series
400mA Inductor Built-in Step-Down “micro DC/DC” Converters
ETR28003-002
■GENERAL DESCRIPTION
☆GreenOperation Compatible
The XCL208/XCL209 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in
one tiny package (2.5mm×2.15mm, h=1.05mm). A stable power supply with an output current of 400mA 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.
A wide operating voltage range of 1.8V (2.0V) to 6.0V enables support for applications that require an alkaline battery (2-cell) or
AC adapter (5V) power supply. An internally fixed output voltage (0.8V to 4.0V) or an externally set output voltage can be selected.
The XCL208/XCL209 series uses synchronous rectification at an operating frequency of 3.0MHz. PWM control (XCL208) or
automatic PWM/PFM switching control (XCL209) can be selected. The XCL208 series has a fixed frequency, enabling the
suppression of output ripple. The XCL209 series achieves high efficiency while holding down output ripple across the full range of
loads, from light to heavy, enabling the extension of battery operation time.
Soft start and on/off functions with CL discharge are provided, and the IC can be put in the standby state by inputting a Low level
signal into the CE pin.
■APPLICATIONS
●Mobile phones, Smart phones
●Bluetooth Headsets
●Tablet PCs
●PND
●PC peripheral devices
●DSC, Camcorders
■TYPICAL APPLICATION CIRCUIT
■FEATURES
Input Voltage
Fixed Output Voltage
High Efficiency
Output Current
Oscillation Frequency
CE Function
Protection Circuits
Control Methods
Operating Ambient Temperature
Package
Environmentally Friendly
: 1.8V ~ 6.0V (Type F)
: 2.0V ~ 6.0V (Type A/B)
: 0.8V ~ 4.0V (±2.0%)
: 90% (VIN=4.2V, VOUT=3.3V)
: 400mA
: 3.0MHz (±15%)
: Active High
Soft-start Circuit Built-in
CL High Speed Auto Discharge
: Current Limiter Built-in
(Constant Current & Latching)
: PWM (XCL208)
PWM/PFM (XCL209)
: -40℃~+85℃
: USP-10B03
: EU RoHS Compliant, Pb Free
XCL208A / XCL208B / XCL209A / XCL209B Type
XCL208F / XCL209F Type
■ TYPICAL PERFORMANCE
CHARACTERISTICS
●Efficiency vs. Output Current
XCL208x333DR/XCL209x333D
100
XCL209(PWM/PFM)
80
60
40
20
0
0.01
VIN= 4.2V
5.0V
XCL208(PWM)
V OUT =3.3V
0.1 1
10 100
Output Current:IOUT (mA)
1000
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XCL208/XCL209 Series
■BLOCK DIAGRAM
1)XCL208A / XCL209A Type
L1
VO UT
L2
LX
VIN PVSS
2) XCL208B / XCL209B Type
L1
VO UT
VIN
AVSS
CE AVSS
L2
LX
PVSS
CE
3)XCL208F / XCL209F Type
L1
FB
VIN
L2
LX
PVSS
AVSS
CE
NOTE:
The XCL208 offers a fixed PWM control, a signal from CE Control Logic to PWM/PFM Selector is fixed to "L" level inside. The XCL209 control
scheme is PWM/PFM automatic switching, a signal from CE Control Logic to PWM/PFM Selector is fixed to "H" level inside. The diodes placed
inside are ESD protection diodes and parasitic diodes.
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■PRODUCT CLASSIFICATION
XCL208①②③④⑤⑥ Fixed PWM
XCL209①②③④⑤⑥ PWM/PFM Auto Switching
XCL208/XCL209
Series
DESIGNATOR
ITEM
SYMBOL
DESCRIPTION
A
VIN≧2.0V Fixed Output Voltage
Standard soft-start , No CL auto discharge
①
Type
B
VIN≧2.0V Fixed Output Voltage
CL auto discharge, High speed soft-start
F
VIN≧1.8V Output Voltage External Setting
CL auto discharge, High speed soft-start
10 1.0V
12 1.2V
15 1.5V
18 1.8V
②③
Output Voltage (*1)
25 2.5V
28 2.8V
2L 2.85V
30 3.0V
33 3.3V
08 External Setting 0.8V (XCL208F/XCL209F)
④ Oscillation Frequency 3 3.0MHz
⑤⑥ (*2)
Package (Order Unit)
DR USP-10B03 (3,000/Reel)
(*1) When other output voltages (semi-custom) are needed, please contact your local Torex sales office for more information.
Output voltage range is 0.8~4.0V.
(*2) Halogen free and EU RoHS compliant.
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