XC9141/XC9142
Series
Load Disconnection Function, 0.8A Step-up DC/DC Converters
ETR04018-002
■GENERAL
DESCRIPTION
☆GreenOperation-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 C
L
Discharge Function which can
quickly discharge the electric charge at the output capacitor (C
L
). 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
: 0.65V½6.0V
: 1.8V½5.5V (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(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)
C
L
Auto Discharge Function (A,D type)
Bypass Switch Function (B,E type)
: Ceramic Capacitor
: -40℃½+85℃
: SOT-25,USP-6C,WLP-6-01
: EU RoHS Compliant, Pb Free
Functions
Output Capacitor
Operating Ambient Temperature
Package
Environmentally Friendly
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
XC9141A33C / XC9142A33C
L=4.7μH(LQH5BPN4R7NT0L)
C
IN
=10μF(GRM188R60J106M),C
L
=10μF(GRM188R60J106M)
L=4.7μH
Lx
CE
V
B AT
C
IN
=10μF
BAT
GND
V
OUT
V
OUT
Efficiency : EFFI [%]
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Output Current : I
OUT
[mA]
1000
solid line : XC9141
dotted line : XC9142
V
BAT
=0.9V
V
BAT
=1.2V
V
BAT
=1.8V
V
BAT
=2.5V
CE
C
L
=10μF
1/34
XC9141/XC9142
Series
■BLOCK
DIAGRAM (Continued)
●XC9141D/XC9142D
type
Lx
C
FB
R
FB1
Error Amp.
FB
R
FB2
Vref with
Soft Start
CE Controller
Logic
Phase
Compensation
PWM
comparator
Current sense
Short-circuit protect ion
Latch Timer
PWM/PFM
Controller Logic
Load disconnect
Controller
V
OUT
V
OUT
C
L
Discharge
Buffer
Driver
GND
RAMP Wave
Generator
OSC
CE
V
OUT
V
DD
V
DD
MAX
BAT
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
* XC9141 series chooses only PWM control.
●XC9141E/XC9142E
type
Lx
C
FB
R
FB1
Error Amp.
FB
R
FB2
Vref with
Soft Start
CE Controller
Logic
Phase
Compensation
PWM
comparator
Current sense
Short-circuit protection
Latch Timer
Load disconnect
Controller
V
OUT
V
OUT
PWM/PFM
Controller Logic
Buffer
Driver
GND
RAMP Wave
Generator
OSC
Bypass SW
CE
V
OUT
V
DD
V
DD
MAX
BAT
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
* XC9141 series chooses only PWM control.
●XC9142F
type
Lx
C
FB
R
FB1
Error Amp.
FB
R
FB2
Vref with
Soft Start
CE Controller
Logic
Phase
Compensation
PWM
comparator
Current sense
Short-circuit protection
Latch Timer
Load disconnect
Controller
V
OUT
V
OUT
PWM/PFM
Controller Logic
Buffer
Driver
GND
RAMP Wave
Generator
OSC
CE
V
OUT
V
DD
V
DD
MAX
BAT
* Diodes inside the circuits are ESD protection diodes and parasitic diodes
3/34
XC9141/XC9142
Series
■PRODUCT
CLASSIFICATION
●
Ordering Information
XC9141①②③④⑤⑥-⑦ PWM control
DESIGNATOR
ITEM
SYMBOL
A
①
Type
B
D
E
Output Voltage
(XC9141A,B Type)
Output Voltage
(XC9141D,E Type)
Oscillation Frequency
18½55
22½55
C
D
MR-G
⑤⑥-⑦
(*1)
(*1)
DESCRIPTION
Refer to Selection Guide
Output voltage options e.g. 1.8V
→
②=1,
③=8
Output voltage options e.g. 2.2V
→
②=2,
③=2
1.2MHz
3.0MHz
SOT-25 (3,000pcs/Reel)
USP-6C (3,000pcs/Reel)
WLP-6-01 (5,000pcs/Reel)
②③
④
Packages (Order Unit)
ER-G
0R-G
The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
XC9142①②③④⑤⑥-⑦ PWM/PFM automatic switching control
DESIGNATOR
ITEM
SYMBOL
A
B
①
Type
C
D
E
F
Output Voltage
(XC9142A,B,C Type)
Output Voltage
(XC9142D,E,F Type)
Oscillation Frequency
18½55
22½55
C
D
MR-G
⑤⑥-⑦
(*1)
(*1)
DESCRIPTION
Refer to Selection Guide
Output voltage options e.g. 1.8V
→
②=1,
③=8
Output voltage options e.g. 2.2V
→
②=2,
③=2
1.2MHz
3.0MHz
SOT-25 (3,000pcs/Reel)
USP-6C (3,000pcs/Reel)
WLP-6-01 (5,000pcs/Reel)
②③
④
Packages (Order Unit)
ER-G
0R-G
The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
4/34
微控制器 MCU
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