LXDC32DAAC-459 [MURATA]

Low EMI noise and small footprint using inductor-imbedded ferrite substrate;
LXDC32DAAC-459
型号: LXDC32DAAC-459
厂家: muRata    muRata
描述:

Low EMI noise and small footprint using inductor-imbedded ferrite substrate

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LXDC32D series  
Micro DCDC converter  
1. Features  
Low EMI noise and small footprint using inductor-imbedded ferrite substrate  
2ch type DCDC converter  
High efficiency using synchronous rectifier technology at 3MHz operation  
PFM/PWM automatic mode switching function  
Smooth mode transition between PFM mode and PWM mode with low-ripple-voltage PFM mode  
2% DC voltage accuracy over full load current range (Vout=1.2~4V)  
Maximum Load Current: 600mA (depends on output voltage)  
Fixed output voltage: 0.8V 4V (factory setting, 50mV step)  
Internal soft start, overcurrent protection  
2. Description  
The LXDC32D series is a low power step-down DC-DC converter suitable for space-limited or noise-sensitive  
applications. The device utilizes an inductor-embedded ferrite substrate that reduces radiated EMI noise and  
conduction noise.  
By adding output capacitors, it can be used as an LDO replacement. Its low noise and easy-to-assemble features  
assure reliable power supply quality.  
The device works in PFM mode at light load for extended battery life. At heavy load, it changes to PMW mode  
automatically and maintains high efficiency using synchronous rectifying technology.  
The device provides good output voltage accuracy even in PFM mode. It maintains 2% DC voltage accuracy over  
the full current range (0-600mA, depends on output voltage), and shows very smooth mode transition between  
PFM mode and PWM mode.  
3. Typical Application Circuit  
LXDC32D  
Enable1  
Enable2  
Vin  
EN1  
EN2  
Vin  
Vout1  
Vout2  
Vout1  
Vout2  
GND  
Cout2  
Cout1  
1
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
4Mechanical Details  
4-1 Outline  
Top View  
Side View  
Bottom View  
Unit: mm  
Dimension  
Mark  
Dimension  
Mark  
L
W
T
a
b
c
3.2 ± 0.2  
2.5 ± 0.2  
g
h
i
0.5 ± 0.1  
0.15 + 0.2 / - 0.15  
0.7 ± 0.1  
1.2 MAX  
0.4 ± 0.1  
j
0.3 ± 0.1  
0.6 ± 0.1  
k
l
0.3 ± 0.1  
0.4 ± 0.1  
0.9 ± 0.1  
d
e
f
0.15 + 0.2/ - 0.15  
0.45 ± 0.1  
0.4 ± 0.1  
m
n
0.4 ± 0.1  
1.05 ± 0.1  
4-2 Pin Function  
Top View  
Bottom View  
2
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
3
1
1
3
2
2
4
8
8
4
5
7
7
5
6
6
Pin No.  
y
Description  
I
/
O
l
1, 5  
V I Vin pin supplies current to the LXDC32D internal  
i n regulator.  
n p  
u
t
This is the ON/OFF control pin of the device.  
Connecting this pin to GND keeps the device in  
shutdown mode.  
I
E n  
N p  
1 u  
t
Pulling this pin to Vin enables the device with soft start.  
This pin must not be left floating and must be  
terminated.  
If this pin is left open, the device may be off around  
100mA output.  
2
EN=H: Device ON, EN=L: Device OFF  
O Regulated voltage output pin.  
V
o
u
t
u
t
Apply output load between this pin and GND.  
3
p
u
t
1
4,8  
G - Ground pin  
N
D
This is the ON/OFF control pin of the device.  
Connecting this pin to GND keeps the device in  
shutdown mode.  
Pulling this pin to Vin enables the device with soft start.  
This pin must not be left floating and must be  
terminated.  
I
E n  
N p  
2 u  
t
6
7
If this pin is left open, the device may be off around  
100mA output.  
EN=H: Device ON, EN=L: Device OFF  
Regulated voltage output pin.  
Apply output load between this pin and GND.  
V O  
o u  
3
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
u t  
t p  
2 u  
t
4-3. Functional Block Diagram  
5. Ordering Information  
Part number  
Input  
Voltage[V]  
Output  
Voltage[V]  
Max Iout[mA]  
MOQ  
Vout1  
Vout2  
1.3  
Iout1  
600  
600  
600  
600  
600  
600  
Iout2  
600  
600  
600  
600  
500  
450  
LXDC32DAAC-455  
LXDC32DAAC-437  
LXDC32DAAC-440  
LXDC32DAAC-465  
LXDC32DAAC-280  
LXDC32DAAC-439  
2.3 ~ 5.5  
2.8 ~ 5.5  
2.8 ~ 5.5  
2.8 ~ 5.5  
3.5 ~ 5.5  
3.5 ~ 5.5  
1.2  
1.1  
1.2  
1.5  
1.2  
1.1  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
1.8  
1.8  
1.8  
2.5  
2.8  
4
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
LXDC32DAAC-438  
LXDC32DAAC-442  
LXDC32DAAC-145  
LXDC32DAAC-394  
LXDC32DAAC-422  
LXDC32DAAC-398  
LXDC32DAAC-393  
LXDC32DAAC-435  
LXDC32DAAC-459  
3.5 ~ 5.5  
3.7 ~ 5.5  
3.7 ~ 5.5  
3.7 ~ 5.5  
3.8 ~ 5.5  
3.8 ~ 5.5  
3.8 ~ 5.5  
3.8 ~ 5.5  
3.8 ~ 5.5  
1.2  
1.1  
2.8  
3.0  
3.0  
3.0  
3.3  
3.3  
3.3  
3.3  
3.3  
600  
600  
600  
600  
600  
600  
600  
600  
500  
450  
350  
350  
350  
300  
300  
300  
300  
300  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
T/R, 1000pcs/R  
1.35  
1.8  
0.9  
0.95  
1.0  
1.8  
2.5  
# Output voltage can be set 50mV step from 0.8V to 4.0V. Please ask Murata representative.  
6. Electrical Specification  
6-1Absolute maximum ratings  
Parameter  
Symbol  
Vin, EN  
Ta  
rating  
6.3  
Unit  
V
Input voltage  
o
Operating ambient temperature  
Operating IC temperature  
-40 to +85  
C
o
TIC  
-40 to +125  
-40 to +85  
C
o
Storage temperature  
TSTO  
C
6-2 Electrical characteristics (Ta=25)  
Parameter  
Symbol  
Condition  
Min.  
2.3  
Typ.  
5.0  
Max.  
5.5  
Unit  
V
Input voltage  
Vin  
UVLO  
UVLO  
Iin-off  
1.0  
1.4  
1.8  
3
V
Input leak current  
Vin=3.7V,EN1=0V,EN2=0V  
Vout=0.9V  
0
μ A  
0.876  
0.926  
0.976  
1.076  
0.9  
0.95  
1.0  
1.1  
0.924  
0.974  
1.024  
1.124  
Vout=0.95V  
Vin-Vout>1.0V  
Vout=1.0V  
Output voltage  
accuracy  
Vout  
%
Vout=1.1V  
Vout=1.2V~2.5V  
Vin-Vout>1.0V  
-2.0  
+2.0  
Vout=2.55V~3.25V Vin-Vout>0.7V  
5
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
Vout=3.3V  
Vin-Vout>0.5V  
Vout=0.9V~1.8V  
0
0
0
600  
500  
Vout=1.85V~2.5V  
Vout=2.55V~2.8V  
Load current  
range  
450  
mA  
Iout  
Vout=2.85V~3.0V  
0
0
350  
300  
Vout=3.05V~3.3V  
Vin=EN1=3.7V,  
Vrpl1  
Vrpl2  
15  
Iout1=600mA,BW=100MHz, EN2=0V  
Ripple voltage  
Parameter  
mV  
Vin=EN2=3.7V,  
Iout2=300mA,BW=100MHz, EN1=0V  
15  
Symbol  
Condition  
Min.  
Typ.  
TBD  
Max.  
Unit  
LXDC32DAAC-455  
LXDC32DAAC-437  
LXDC32DAAC-440  
LXDC32DAAC-465  
LXDC32DAAC-280  
LXDC32DAAC-439  
LXDC32DAAC-438  
LXDC32DAAC-442  
LXDC32DAAC-145  
LXDC32DAAC-394  
LXDC32DAAC-422  
LXDC32DAAC-398  
LXDC32DAAC-393  
LXDC32DAAC-435  
LXDC32DAAC-459  
TBD  
TBD  
TBD  
83  
Vin=3.7V,  
Iout1=Iout2=150mA  
TBD  
TBD  
TBD  
88  
Efficiency  
EFF  
%
82  
81  
81  
Vin=5.0V,  
Iout1=Iout2=150mA  
81  
84  
86  
VENH  
VENL  
ON ; Enable  
1.4  
0
Vin  
V
V
EN control  
voltage  
OFF ; Disable  
0.25  
6
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
SW Frequency  
Fosc  
2.5  
3.0  
3.5  
MHz  
Vout=0.9V~1.8V  
Vout=1.85V~2.5V  
Vout=2.55V~2.8V  
Vout=2.85V~3.0V  
Vout=3.05V~3.3V  
600  
500  
450  
350  
300  
900  
900  
900  
700  
700  
1200  
1200  
1200  
1200  
1200  
mA  
OCP  
Over current  
protection  
If the over current event continues less than Tlatch, auto-recovery.  
If the over current event continues more than Tlatch, latch-up.  
Restart by toggling EN1 voltage or Vin voltage.  
Restart by toggling EN2 voltage or Vin voltage.  
Tlatch  
Ton1  
Latch-up mask time  
20  
usec  
0.9  
2.5  
2.5  
msec  
Start-up time  
Ton2  
0.9  
msec  
(*1) External capacitors (Cout1: 10uF, Cout2: 10uF) should be placed near the module for proper operation.  
(*2) The above characteristics are tested using the test circuit in section 8.  
6-3 Thermal and Current De-rating Information  
The following figures show the power dissipation and temperature rise characteristics. These data are measured  
on Murata’s evaluation board of this device at no air-flow condition.  
Io - Loss Characteristics (Vin=3.6V, Vo=1.8V)  
Loss - ΔT Characteristics (Vin=3.6V, Vo=1.8V)  
400  
350  
300  
250  
200  
150  
100  
50  
50  
45  
40  
35  
30  
25  
20  
15  
10  
5
0
0
0
100  
200  
300  
400  
500  
600  
0
100  
200  
300  
400  
Io (mA)  
Power Dissipation (mW)  
The output current of the device may need to be de-rated if it is operated in a high ambient temperature or in a  
continuous power delivering application. The amount of current de-rating is highly dependent on the  
environmental thermal conditions, i.e. PCB design, nearby components or effective air flows. Care should  
especially be taken in applications where the device temperature exceeds 85oC.  
7
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
o
The IC temperature of the device must be kept lower than the maximum rating of 125 C. It is generally  
recommended to take an appropriate de-rating to IC temperature for a reliable operation. A general de-rating for  
the temperature of semiconductor is 80%.  
MLCC capacitor’s reliability and the lifetime is also dependant on temperature and applied voltage stress. Higher  
temperature and/or higher voltage cause shorter lifetime of MLCC, and the degradation can be described by the  
Arrhenius model. The most critical parameter of the degradation is IR (Insulation Resistance). The below figure  
shows MLCC’s B1 life based on a failure rate reaching 1%. It should be noted that wear-out mechanisms in  
MLCC capacitor is not reversible but cumulative over time.  
Capacitor B1 Life vs Capacitor Case temperature  
100000  
Vin=5V  
Vin=3.6V  
10000  
Vin=3.3V  
Vin=2.5V  
1000  
100  
10  
1
0.1  
20  
40  
60  
80  
100  
120  
e
Capacitor Case temperature(  
)
The following steps should be taken before the design fix of user’s set for reliable operation.  
1. The ambient temperature of the device should be kept below 85 oC  
2. The IC temperature should be measured on the worst condition of each application. The temperature must be  
kept below 125 oC. An appropriate de-rating of temperature and/or output current should be taken.  
3. The MLCC temperature should be measured on the worst condition of each application. Considering the above  
figure, it should be checked if the expected B1 life of MLCC is acceptable or not.  
7. Detailed Description  
PFM/PWM Mode  
If the load current decreases, the converter will enter PFM mode automatically. In PFM mode, the device operates  
in discontinuous current mode with a sporadic switching pulse to keep high efficiency at light load.  
The device uses constant on-time control in PFM operation, which produces a low ripple voltage and accurate  
output voltage compared with other PFM architectures. Because of the architecture, DC output voltage can be  
kept within +/-2% range of the nominal voltage and the output ripple voltage in PFM mode can be reduced by just  
increasing the output capacitor.  
The transition between PFM and PWM is also seamless and smooth.  
The transition current between PFM and PWM is dependent on Vin, Vout and other factors, but the approximate  
threshold is about 100-200mA.  
8
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
PFM mode at light load  
PWM mode at heavy load  
Nominal output voltage  
UVLO (Under Voltage Lock Out)  
The input voltage (Vin) must reach or exceed the UVLO voltage (1.4Vtyp) before the device begins the start up  
sequence even when the EN pin is kept high. The UVLO function protects against unstable operation at low Vin  
levels .  
Soft Start  
The device has an internal soft-start function that limits the inrush current during start-up. The soft-start system  
progressively increases the switching on-time from a minimum pulse-width to that of normal operation. Because of  
this function, the output voltage increases gradually from zero to nominal voltage at start-up event. The nominal  
soft-start time is 0.9msec. If you prefer a faster soft-start time, please contact a Murata representative.  
Enable  
The device starts operation when EN is set high and starts up with soft start. For proper operation, the EN pin must  
be terminated to logic high and must not be left floating. If the pin is left open, the device may operate at light load  
but will not work at heavy load.  
Pulling the EN pin to logic low forces the device into shutdown. The device does not have a discharge function  
when it turns off. If you prefer a discharge function, please contact a Murata representative.  
100% Duty Cycle Operation  
The device can operate in 100% duty cycle mode, in which the high-side switch is constantly turned ON, thereby  
providing a low input-to-output voltage difference.  
When Vin and Vout become close and the duty cycle approaches 100%, the switching pulse will skip the nominal  
switching period and the output voltage ripple may be larger than other conditions. It should be noted that this  
condition does not mean a failure of the device.  
Over Current Protection  
When the output current reaches the OCP threshold, the device narrows the switching duty and decreases the  
output voltage. If the OCP event is removed within the mask time (20usec typ), the output voltage recovers to the  
nominal value automatically. If the OCP event continues over the mask time, the device will shutdown. After it is  
shut down, it can be restarted by toggling the Vin or EN voltage.  
9
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
8. Test Circuit  
Cout1  
Cout2  
: 10uF/6.3V (GRM188B30J106M)  
: 10uF/6.3V (GRM188B30J106M)  
10  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
9. Micro DC-DC Converter evaluation board  
Measurement setup  
Vin_s  
EN1  
Vin  
Vout2_s  
Vout1_s  
Vout1  
LOAD  
LOAD  
Vout2  
GND  
GND  
EN2  
GND_s  
The enable switch has three positions.  
1. When it is toggled to “ON” side, the device starts operation.  
2. When it is toggled to “OFF” side, the device stops operation and remains in shut down status.  
3. When it is set to middle of “ON” and “OFF”, the EN pin floats and an external voltage can be applied to the  
EN terminal pin on the EVB. If you don’t apply an external voltage to EN pin, the enable switch should not to  
be set to the middle position.  
The 47uF capacitor is for the evaluation kit only, and has been added to compensate for the long test cables.  
10.Reliability Tests  
Result  
(NG)  
No.  
1
Items  
Specifications  
Test Methods  
QTY  
Vibration  
Resistance  
Appearance :  
No severe damages  
Solder specimens on the testing jig  
(glass fluorine boards) shown in  
appended Fig.1 by a Pb free solder.  
The soldering shall be done either by  
iron or reflow and be conducted with  
care so that the soldering is uniform  
and free of defect such as by heat  
shock.  
G
(0)  
18  
Frequency : 10~2000 Hz  
Acceleration : 196 m/s2  
Direction : X,Y,Z 3 axis  
Period  
: 2 h on each  
direction Total 6 h.  
11  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
2
Deflection  
Solder specimens on the testing jig  
(glass epoxy boards) shown in  
appended Fig.2 by a Pb free solder.  
The soldering shall be done either by  
iron or reflow and be conducted with  
care so that the soldering is uniform  
and free of defect such as by heat  
shock.  
G
(0)  
18  
Deflection : 1.6mm  
3
Soldering strength (Push  
Strength)  
9.8 N Minimum  
Solder specimens onto test jig shown  
below. Apply pushing force at 0.5mm/s  
until electrode pads are peeled off or  
ceramics are broken. Pushing force is  
applied to longitudinal direction.  
G
(0)  
Pushing Direction  
18  
Specimen  
Jig  
4
5
Solderability of  
Termination  
75%  
of  
the Immerse specimens first an ethanol  
solution of rosin, then in a Pb free  
solder solution for 3±0.5 sec. at 245±5  
°C.  
terminations is to be  
soldered evenly and  
continuously.  
G
(0)  
18  
18  
Preheat  
: 150 °C, 60 sec.  
Solder Paste : Sn-3.0Ag-0.5Cu  
Flux : Solution of ethanol and rosin  
(25 % rosin in weight proportion)  
Resistance to  
Soldering Heat  
(Reflow)  
Appearance  
No severe damages Preheat Temperature : 150-180 °C  
Preheat Period : 90+/-30 sec. High  
Satisfy  
specifications listed High Temp. Period  
in paragraph 6-2.  
Temperature : 220 °C  
: 20sec.  
Electrical  
specifications  
G
(0)  
Peak Temperature  
: 260+5/-0 °C  
Specimens are soldered twice with the  
above condition, and then kept in  
room condition for 24  
measurements.  
h before  
Result  
(NG)  
No. Items  
Specifications  
Test Methods  
QTY  
18  
6
High Temp.  
Appearance  
No severe damages  
Temperature85±2  
Period1000+48/-0 h  
Room Condition224h  
G
(0)  
Exposure  
Electrical  
specifications  
Satisfy  
specifications listed  
in paragraph 6-2.  
7
Temperature  
Cycle  
Condition100 cycles in the following  
table  
Step  
Temp(°C)  
Time(min)  
30±3  
Min.  
Operating  
Temp.+0/-3  
G
(0)  
1
18  
Max.  
2
Operating  
Temp.+3/-0  
30±3  
12  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
8
9
Humidity  
(Steady State)  
Temperature85±2 ℃  
Humidity8090%RH  
Period1000+48/-0 h  
Room Condition224h  
G
18  
(0)  
Low Temp.  
Exposure  
Temperature-40±2 ℃  
Period1000+48/-0 h  
Room Condition224h  
G
18  
(0)  
10  
11  
C200pFR0Ω  
ESD(Machine  
Model)  
G
(0)  
TEST Voltage +/-100V  
Number of electric discharges1  
5
C100pFR1500Ω  
ESD(Human  
Body Model)  
G
(0)  
TEST Voltage +/-1000V  
Number of electric discharges1  
5
Fig.1  
Land Pattern  
Top View  
Unit:mm  
Mark  
a
Dimension  
Mark  
Dimension  
0.4  
0.6  
f
g
h
i
0.5  
b
0.15  
0.7  
c
0.15  
0.45  
d
1.5  
13  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
e
0.4  
*Reference purposes only  
Fig.2  
Testing board  
Unitmm  
Land pattern is same as  
figure1  
Glass-fluorine board t=  
1.6mm  
Copper thickness over 35  
m
Mounted situation Unitmm  
Device チップ  
45  
45  
Test method  
Unitmm  
14  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
11. Tape and Reel Packing  
1) Dimensions of Tape (Plastic tape)  
Unit: mm  
Feeding direction  
2)  
Dimensions of Reel  
Unit: mm  
2 0.5  
±
60  
180  
φ
φ
13 0.2  
φ
±
(13.0)  
15.4±1.0  
3)  
Packing (Moisture-proof packing)  
Tape and reel must be sealed with the anti-humidity plastic bag. The bag contains the desiccant and the humidity  
indicator.  
15  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
Label  
Desiccant  
Humidity  
Indicator  
Label  
Anti-humidity  
Aluminum foil pack  
16  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
4)  
Taping Diagrams  
Feeding Hole  
Feeding Direction  
Chip  
Symbol  
Items  
Ratings(mm)  
17  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
A
B
C
No components at trailer  
No components at leader  
Whole leader  
min 160  
min 100  
min 400  
6The tape for chips are wound clockwise, the feeding holes to the right side as the tape is pulled toward  
the user.  
7Packaging unit: 1,000pcs/reel  
8Material:  
Reel  
Base Tape Plastic  
Plastic  
Antistatic coating for both base tape and reel  
Peeling of force  
0.1~1.3N  
165 to 180 °  
Cover Tape  
Base Tape  
10The number of the omissions is to two, and there is no consecutive missing part.  
NOTICE  
1. Storage Conditions:  
The product shall be stored without opening the packing under the ambient temperature from 5 to 35  
deg.C and humidity from 20 to 70%RH.  
(Packing materials, in particular, may be deformed at the temperature over 40 deg.C.)  
The product left more than 6 months after reception, it needs to be confirmed the solderbility before  
used.  
- The product shall be stored in non corrosive gas (Cl2, NH3, SO2, Nox, etc.).  
- Any excess mechanical shock including, but not limited to, sticking the packing materials by sharp object  
and dropping the product, shall not be applied in order not to damage the packing materials.  
After the packing opened, the product shall be stored at < 30 deg.C / < 60 %RH and the product shall be  
used within 168 hours.  
When the color of the indicator in the packing changed, the product shall be baked before  
soldering.  
This product is applicable to MSL3 (Based on IPC/JEDEC J-STD-020)  
18  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
2. Handling Conditions:  
Be careful in handling or transporting the product. Excessive stress or mechanical shock may damage the  
product because of the nature of ceramics structure.  
Do not touch the product, especially the terminals, with bare hands. Doing so may result in poor  
solderability.  
3. Standard PCB Design (Land Pattern and Dimensions):  
All the ground terminals should be connected to ground patterns. Furthermore, the ground pattern should  
be provided between IN and OUT terminals. Please refer to the specifications for the standard land  
dimensions.  
The recommended land pattern and dimensions are shown for a reference purpose only.  
Electrical, mechanical and thermal characteristics of the product shall depend on the pattern design and  
material / thickness of the PCB. Therefore, be sure to check the product performance in the actual set.  
When using underfill materials, be sure to check the mechanical characteristics in the actual set.  
4. Soldering Conditions:  
Soldering is allowed up through 2 times.  
Carefully perform preheating T less than 130 °C.  
When products are immersed in solvent after mounting, pay special attention to maintain the temperature  
difference within 100 °C. Soldering must be carried out by the above mentioned conditions to prevent  
products from damage. Contact Murata before use if concerning other soldering conditions.  
Reflow soldering standard conditions (example)  
19  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
Use rosin type flux or weakly active flux with a chlorine content of 0.2 wt % or less.  
5. Cleaning Conditions:  
The product is not designed to be cleaned after soldering.  
6. Operational Environment Conditions:  
Products are designed to work for electronic products under normal environmental conditions (ambient  
temperature, humidity and pressure). Therefore, products have no problems to be used under the similar  
conditions to the above-mentioned. However, if products are used under the following circumstances, it may  
damage products and leakage of electricity and abnormal temperature may occur.  
- In an atmosphere containing corrosive gas ( Cl2, NH3, SOx, NOx etc.).  
- In an atmosphere containing combustible and volatile gases.  
- In a dusty environment. - Direct sunlight  
- Water splashing place.  
- Humid place where water condenses. - In a freezing environment.  
If there are possibilities for products to be used under the preceding clause, consult with Murata before  
actual use.  
If static electricity is added to this product, degradation and destruction may be produced.  
Please use it after consideration enough so that neither static electricity nor excess voltage is added at the  
time of an assembly and measurement.  
If product malfunctions may result in serious damage, including that to human life, sufficient fail-safe  
measures must be taken, including the following:  
(1) Installation of protection circuits or other protective device to improve system safety  
(2) Installation of redundant circuits in the case of single-circuit failure.  
7. Input Power Capacity:  
Products shall be used in the input power capacity as specified in this specifications.  
Inform Murata beforehand, in case that the components are used beyond such input power capacity range .  
8. Limitation of Applications:  
The products are designed and produced for application in ordinary electronic equipment  
(AV equipment, OA equipment, telecommunication, etc). If the products are to be used in devices requiring  
extremely high reliability following the application listed below, you should consult with the Murata staff in  
advance.  
- Aircraft equipment. - Aerospace equipment - Undersea equipment.  
- Power plant control equipment.  
- Medical equipment.  
- Transportation equipment (vehicles, trains, ships, etc.).  
20  
Feb. 2016  
LXDC32D series  
Micro DCDC converter  
- Automobile equipment which includes the genuine brand of car manufacture, car factory-installed option  
and dealer-installed option.  
- Traffic signal equipment.  
- Disaster prevention / crime prevention equipment.  
- Data-procession equipment.  
- Application which malfunction or operational error may endanger human life and property of assets.  
- Application which related to occurrence the serious damage  
- Application of similar complexity and/ or reliability requirements to the applications listed in the above.  
!
Note:  
Please make sure that your product has been evaluated and confirmed against your specifications when  
our product is mounted to your product.  
Product specifications are subject to change or our products in it may be discontinued without advance  
notice.  
This catalog is for reference only and not an official product specification document, therefore, please  
review and approve our official product specification before ordering this product.  
21  
Feb. 2016  

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