XC9141 Datasheet, PDF (1/30 Pages) Torex Semiconductor – Load Disconnection Function, 0.8A Step-up DC/DC Converters

XC9141/XC9142 Series
ETR04018-001
Load Disconnection Function, 0.8A Step-up DC/DC Converters
˙GENERAL DESCRIPTION

ˑGreenOperation-compatible
XC9141/XC9142 series are synchronous step-up DC/DC converters with a 0.3Ω(TYP.) N-channel driver transistor and a
0.3Ω(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
100Ω load 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.

* D, E, and F types are under development.
˙APPLICATIONS

˙FEATURES
˔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


Input Voltage Range
Fixed Output Voltage
Oscillation Frequency
Input Current
Output Current
Control Mode Selection
Load Transient Response
Protection Circuits
Functions
: 0.65Vʙ6.0V
: 1.8Vʙ5.5V (0.1V increments)
: 1.2MHz (±15%), 3.0MHz (±20%)
: 0.8A
: 500mA @V_OUT=5.0V, V_BAT=3.3V (TYP.)
350mA @V_OUT=3.3V, V_BAT =1.8V (TYP.)
: PWM (XC9141 Series) or
Auto PWM/PFM (XC9142 Series)
: 100mV
@V_OUT=3.3V, V_BAT =1.8V,I_OUT=1mA→200mA
: 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)
Output Capacitor
Operating Ambient Temperature
Package
Environmentally Friendly










































C_L Auto Discharge Function (A,D type)
Bypass Switch Function (B,E type)
: Ceramic Capacitor
: -40ˆʙ+85ˆ
: SOT-25,USP-6C,WLP-6-01
: EU RoHS Compliant, Pb Free
* D, E, and F types are under development.
˙TYPICAL APPLICATION CIRCUIT
˙TYPICAL PERFORMANCE
CHARACTERISTICS

XC9141A33C / XC9142A33C
L=4.7μH(LQH5BPN4R7NT0L)
C_IN=10μF(GRM188R60J106M),C_L=10μF(GRM188R60J106M)
L=4.7μH
Lx
V_OUT
CE
CE
VB AT
CIN =10μF
BAT
GND
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 : I_OUT [mA]
1000
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