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Torex Semiconductor

XC9142 Datasheet Preview

XC9142 Datasheet

0.8A Step-up DC/DC Converters

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XC9141/XC9142 Series
ETR04018-002
Load Disconnection Function, 0.8A Step-up DC/DC Converters
GENERAL DESCRIPTION
GreenOperation-compatible
XC9141/XC9142 series are synchronous step-up DC/DC converters with a 0.3(TYP.) N-channel driver transistor and a
0.3(TYP.) synchronous P-channel switching transistor built-in. A highly efficient and stable current can be supplied up to 0.8A
by reducing ON resistance of the built-in transistors.
The series are able to start operation under the condition which has 0.9V input voltage to generate 3.3V output voltage with a
100load resistor, suitable for mobile equipment using only one Alkaline battery or one Nickel metal hydride battery.
The output voltage can be set from 1.8V to 5.5V (±2.0%) in steps of 0.1V.With the built-in oscillator, either 1.2MHz or 3.0MHz can
be selected for suiting to your particular application.
During the devices enter stand-by mode, A, D types prevent the application malfunction by CL Discharge Function which can
quickly discharge the electric charge at the output capacitor (CL). B, E types is able to drive RTC etc. by Bypass Switch Function
to maintain continuity between the input and output. C, F types is able to connect in parallel with other power supplies by Load
Disconnection Function which breaks continuity between the input and output.
APPLICATIONS
Portable equipment
Beauty & health equipment
Wearable devices
Game & Hobby
PC Peripherals
Devices with 1~3 Alkaline,
1~3 Nickel Hydride, 1 Lithium and 1 Li-ion
FEATURES
Input Voltage Range
Fixed Output Voltage
Oscillation Frequency
Input Current
Output Current
Control Mode Selection
Load Transient Response
Protection Circuits
Functions
Output Capacitor
Operating Ambient Temperature
Package
Environmentally Friendly
: 0.65V6.0V
: 1.8V5.5V (0.1V increments)
: 1.2MHz (±15%), 3.0MHz (±20%)
: 0.8A
: 500mA @VOUT=5.0V, VBAT=3.3V (TYP.)
350mA @VOUT=3.3V, VBAT =1.8V (TYP.)
: PWM (XC9141 Series) or
Auto PWM/PFM (XC9142 Series)
: 100mV@VOUT=3.3V, VBAT =1.8V,
IOUT=1mA200mA(tr=5μs)
: Over-current limit
Integral latch method (D,E,F type)
Output short-circuit protection (D,E,F type)
: Soft-start
Load Disconnection Function (A,C,D,F type)
CL Auto Discharge Function (A,D type)
Bypass Switch Function (B,E type)
: Ceramic Capacitor
: -40+85
: SOT-25,USP-6C,WLP-6-01
: EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE
CHARACTERISTICS
XC9141A33C / XC9142A33C
L=4.7μH(LQH5BPN4R7NT0L)
CIN=10μF(GRM188R60J106M),CL=10μF(GRM188R60J106M)
L=4.7μH
Lx
VOUT
CE CE
VB AT
BAT GND
CIN =10μF
VOUT
CL=10μF
100
90
80
70
60
50
40
30
20
10
0
0.1
V BAT =0.9V
V BAT =1.2V
V BAT =1.8V
V BAT =2.5V
solid line : XC9141
dotted line : XC9142
1 10 100
Output Current : IOUT [mA]
1000
1/34




Torex Semiconductor

XC9142 Datasheet Preview

XC9142 Datasheet

0.8A Step-up DC/DC Converters

No Preview Available !

XC9141/XC9142 Series
BLOCK DIAGRAM
XC9141A/XC9142A type
Lx
CFB RFB1
Ph ase
Com pe nsa tion
Error Amp.
PWM
FB comparator
RFB2
Current sense
PWM/PFM
Controller Logic
Vref with
Soft Start
RAMP Wave
Ge ne ra tor
OS C
CE
CE Controller
Logic
Buffer
Drive r
Load disconnect
Con troller
VOUT
CL
Dischar g e
VOUT
VDD
VDD MAX
VOUT
GND
BA T
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
* XC9141 series chooses only PWM control.
XC9141B/XC9142B type
Lx
CFB RFB1
Ph ase
Com pe nsa tion
Error Amp.
PWM
FB comparator
RFB2
Current sense
PWM/PFM
Controller Logic
Vref with
Soft Start
RAMP Wave
Ge ne ra tor
OS C
CE
CE Controller
Logic
Buffer
Drive r
Load disconnect
Con tr oller
VOUT
VOUT
Bypass SW
VDD
VDD MAX
VOUT
GND
BA T
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
* XC9141 series chooses only PWM control.
XC9142C type
Lx
CFB RFB1
Ph ase
Com pe nsa tion
Error Amp.
PWM
FB comparator
RFB2
Current sense
PWM/PFM
Controller Logic
Vref with
Soft Start
RAMP Wave
Ge ne ra tor
OS C
CE
CE Controller
Logic
Buffer
Drive r
Load disconnect
Con tr oller
VOUT
VOUT
VDD
VDD MAX
VOUT
GND
BA T
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
2/34


Part Number XC9142
Description 0.8A Step-up DC/DC Converters
Maker Torex Semiconductor
Total Page 30 Pages
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