MPDTY321S Specification
1
DC-DC Converter Specification
MPDTY321S
1 . Application
This specification applies to DC-DC Converter for telecommunication / data-communication equipment,
MPDTY321S.
For any other application, please contact us before using this product.
2 . Customer Reference
Customer Spec. Number
Customer Part Number
3 . Murata Part Number
MPDTY321S
4 . Appearance, Dimensions
(1.55)
P
P
P
F
P
15.8±0.2
P
P
M
(1.55)
15.4±0.2
)…reference value
P=2.54 ±0.2mm
P
Tolerance is not accumulated.
P
P
□
①
□
②
P
(
2.9max.
Marking
(1)
Pin No.1 Marking / MFG ID
(2)
Parts No.
F
(3)
Lot No.
□□
①②
①Production Year
②Production Month(1,2,3,…9,O,N,D)
※Flux may expand on PCB and attach onto
the area where the marking is printed
with laser.
In the case the marking become darker in
color since flux is unreflecting.
It may be a little hard to read, however,
the marking is not deleated nor blurred.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
2
5 . Pin Number and Function
Pin No.
Symbol
Function
1
VAR
Vout Adjustment
2
FT
Output Trim
3,9,10,11
GND
GND
4,5
Vout
Output
6
+Sense
Output +Sense
7,8
12
Vin
ON/OFF
Input Voltage
Remote ON/OFF
6. Block Diagram
7,8
Vout
Vin
4,5
6
SENSE
GND
9,10,11
12
3
GND
ON/OFF
Control Circuit
2
1
7. Environmental Conditions
7.1 Operating Temperature Range
7.2 Storage Temperature Range
7.3 Operating Humidity Range
7.4 Storage Humidity Range
VAR
-40°C ~ +85°C
-40°C ~ +85°C
20% ~ 85% (No water condenses in any cases.)
10% ~ 90% (No water condenses in any cases.)
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
3
8.Absolute Maximum Rating
Item
Input Voltage Range
VAR Pin, ON/OFF Pin Voltage Range
Unit
V
V
Absolute Rating
-0.3V∼6.3V
-0.3V∼Vin+0.3V
Remarks
No voltage, no matter how instantaneous, shall be applied beyond the absolute maximum voltage rating to this product. If you
apply any voltage over this limit the product characteristics will deteriorate or the product itself will be destroyed. Even though it
may continue operating for a while after the over-voltage event, its life will likely be shortened significantly. Reliability and life of the
module may degrade similarly if the maximum operating voltage rating is continuously exceeded. This product is designed to
operate within the maximum operating voltage rating specification.
9.
Characteristics
9.1.Electrical Characteristics
9.1.1.Input Characteristics (Ta= 25°C)
Item
Input Voltage Range
UVLO Threshold
Condition
Symbol
Vin
UVLO
Min.
4.5
-
Value
Typ.
5.0
4.3
Max.
5.5
-
Unit
V
V
9.1.2.Interface Characteristics (Ta= 25°C)
Item
Condition
Value
Unit
Min.
Typ.
Max.
ON/OFF pin is pulled up to 5V inside of the DC-DC converter. If ON/OFF pin is left
open, the DC-DC converter shall be “ON”. This pin will be pulled down to GND
inside the DC-DC converter when UVLO events occur. Please do NOT connect
this pin to power supply with low impedance line, so as not to damage the
converter.
If ON/OFF pin is pulled down to
GND, the DC-DC converter
OFF
0
0.3
V
shall be “OFF”.
Symbol
ON/OFF pin
High Voltage
VIH
ON/OFF pin
Low Voltage
VIL
9.1.3.General Characteristics (Ta= 25°C)
Item
Symbol
Output Voltage Range
Vout
Output Current
Iout
Output VoltageTolerance
Ripple Voltage
Vo tol
Vrpl
Efficiency
EFF
Operating Frequency
Frq
Short Circuit Protection
SCP
Condition
FT= Open
FT= Short
See the Thermal derating curve
in clause 9.1.4
Vout=0.8∼0.9V
FT= Open
Vout=0.9∼1.8V
Over Vin,Io,
FT= Short
Rset=1% tolerance
Vout=1.8∼3.3V
FT= Short
Vin=4.5∼5.5V, Iout=0
Vout=0.8∼1.2V
∼4A,
Vout=1.2∼3.3V
BW = 20MHz,
Vin =5.0V, Iout=4A
Vout=1.2V
Vout=2.5V
Vout=3.3V
If output is shorted to GND , DC-DC
converter shall be operated in a hiccup
mode.
After the short circuit event has cleared, the
output is automatically brought back into
regulation.
Min.
0.8
0.9
Value
Typ.
-
Max.
0.9
3.3
0
-
4
-2.0
-
+2.0
-1.5
-
+1.5
-2.0
-
+2.0
-
15
30
-
25
50
-
85
91
93
600
-
kHz
-
6.5
-
A
Unit
V
A
%Vo
mV(pp)
%
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
4
External Output
Capacitor
Output Rise Time
Rising Overshoot
Output Delay
Cout
When input voltage is ideal voltage source
47
-
1000
µF
Tr
Vover
Td
Vo=10%∼90%
1
0.1
-
10
+10
8
msec
%
msec
Vin High :ON/OFF Low→High Vo=10%
!
Caution
The above electrical characteristics are guaranteed with the condition that the impedance of the input voltage source is sufficiently
low as shown in section 10. Connecting an input inductance or using an input power supply with output inductance may cause an
unstable operation of this device. Please check the proper operation of this device with the peripheral circuits on your system.
It is strongly recommended that on/off terminal should be used when you turn on/off this product.
Characteristics may be affected by turning input voltage on/off.
Please check product operation on your application with turning
input voltage on/off.
9.1.4.Thermal Derating
M PDTY321S
(Vin=4.5∼ 5.5V、 Vout=0.8∼ 3.3V、
Air Flow: 0~0.2m /s)
5
0.2m/s
4
Iout [ A ]
0m/s
3
2
1
0
20
30
40
50
60
70
80
90
Ta[℃ ]
The above derating limits apply to this product soldered directly to 101.6*180mm*1.6mm PCB . Any adjacent parts of high
temperature may cause overheating. For reliable operation, please ensure that the FET temperature of this product is
maintained below 120°C and the inductor temperature is below 106°C.
Coil measure point
M
FETmeasure point
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
5
9.2. Operation Information
9.2.1. External Output Bias Condition
External bias voltage level.
Less than Voadj
External bias current level
Less than DC7A
External output bias measurement condition
I
External bias
A
V
V
External bias voltage shall be measured when SW left
open.
External bias current shall be measured when SW left
short.
SW
9.2.2. Output voltage sensing
By connecting SENSE-pin to the load, output voltage drop in wiring shall be compensated.
Vout
MPDTY321S
Vout
MPDTY321S
SENSE
Load
SENSE
Load
GND
GND
Please do NOT connect SENSE-pin to the output of LC filter that is set to the Vout line.
When using this way, this product will not operate properly.
< Caution>
Please connect SENSE-pin to Vout-pin nearby the product, if sense function is not used.
9.2.3. ON/OFF control
By using ON/OFF function, the operation of this product can be disabled without disconnection of input voltage.
When ON/OFF-pin(12pin) is left open
…… Output Voltage =ON
When ON/OFF-pin(12pin) is connected to GND …… Output Voltage =OFF
MPDTY321S
example
GND
ON/OFF
or
< Caution>
ON/OFF pin is pulled up inside of the DC-DC
converter, so voltage appears up to Vin at ON/OFF
pin.
ON/OFF pin will be pulled down to GND inside the
DC-DC converter when UVLO events occur.
Please do NOT connect this pin to power supply, so
as not to damage the converter.
9.2.4. Parallel Operation.
This product is incapable of parallel operation
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
6
9.2.5. Output Voltage Adjustment
The output voltage can be adjusted from 0.8V to 3.3V by connecting resistors between VAR-pin(1Pin) to GND-pin.
The following equation gives the required external-resistor values to adjust the output voltage to the required Vout.
It is highly recommended that evaluation of the characteristics of this DC-DC converter’s operation under your board
conditions be thoroughly conducted.
In case output voltage is used more than 0.9V, please connect FT-pin (2pin) to GND.
MPDTY321S
Vout
(a)0.8≦ Vout <0.9V
Internal Circuit
26400
33kΩ
VAR pin
RVAR=
10kΩ
−10000 [Ω]
Voadj[V]−0.8[V]
(b)0.9≦ Vout ≦3.3V
RVAR
(FT-pin:OPEN)
Error amp
FT pin
RVAR=
(FT-pin:SHORT to GND)
26400
−10000 [Ω]
Voadj[V]−0.9[V]
<RVAR Calculation Example>
Voadj
[V]
3.3
2.5
2.0
1.8
1.5
1.2
1.1
0.9
0.8
Calculated
RVAR[Ω]
1000
6500
14000
19333
34000
78000
122000
Open
Open
RVAR Example
FT pin
1.0kΩ
4.3kΩ + 2.2kΩ
13kΩ + 1kΩ
18kΩ + 1.3kΩ
33kΩ + 1kΩ
7.5kΩ + 3kΩ
120kΩ + 2kΩ
Open
Open
Short to GND
Short to GND
Short to GND
Short to GND
Short to GND
Short to GND
Short to GND
Short to GND
Open
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
7
9.3. Reliability
9.3.1. Humidity
According to JIS-C-0022.
40 土 2°C, 90 to 95%RH, 100 hours. Leave for 4 hours at room temperature.
No damage in appearance and no deviation from electrical characteristics (section 9.1.).
9.3.2. Temperature Cycles
Repeat cycle 5 times. Leave 2 hours at room temp.
No damage in appearance and no deviation from electrical characteristics (section 9.1.)..
Step
Condition
Time
1
-40°C±3°C
30 minutes
2
Room Temp.
5-10 minutes
3
+85°C±2°C
30 minutes
4
Room Temp.
5-10 minutes
9.3.3. Vibration
10 to 55Hz, 1.5mm amplitude (1minute cycle), 1 hour for each of X, Y, Z directions.
No damage in appearance and no deviation from electrical characteristics (section 9.1.).
9.3.4. Mechanical Shock
20G, 1 time for each X, Y, Z directions.
No damage in appearance and no deviation from electrical characteristics (section 9.1.).
10. Test Circuit
In the following test circuit, the initial values under item 9.1. should be met.
10.1. General Measure Circuit
Vin
ON/OFF
C1
7,8
12
4,5
MPDTY321S
3,9,10,11
SENSE
Vout
6
VAR
1
2 F.T
RVAR
C2
RL
C1:22µF/10V
Ceramic Capacitor
C2:47µF/6.3V
Ceramic Capacitor
Please make sure to place C1 and C2 nearby input and output terminal of DC-DC converter.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
8
10.2. Ripple Noise Measurement Circuit
Coaxial cable :1.5D-2V, L=1.5m
Oscilloscope
BW:20MHz
Vout
DC-DC Converter
GND
Terminator
(Keisokugiken TRC-50F)
Ceramic Capacitor
Equivalent circuit
R:50Ω
C:0.01µF
A: Ripple Noise Voltage
B: Ripple Voltage
B
A
C: Switching Period
C
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
9
Packaging Specification
11.1. Tray Dimensions
DC-DC converter are put the trays. (See Fig.1)
Pin No.1
11.
Fig.1
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
10
11.2. Contained pieces of products per corrugated box.
Maximum contained products pieces 600pcs./corrugated box
Further plural sheets of corrugated cardboard are placed on the top of the dummy tray according to number of
contained trays in order to full up the space in a corrugated box.
11.3. Packaging Form
Trays with products are lidded and packed in a corrugated box. (See Fig.2)
Corrugated cardboard
Dummy tray
Tray
Containning products
10 tray max.
Corrugated cardboard
(330)
(68)
MURATA
PRODUCTS
(155)
Corrugated box
Lebel
Dimension [unit : mm]of
Corrugated box is reference
only.
Fig.2
※Marking on the box
1.Murata Parts No.
2.Quantity
3.Inspection No.
4.RoHS-Y
12. Production factory
Komatsu Murata Mfg.Co., Ltd.
Kanazu Murata Mfg. Co., Ltd.
Wakura Murata Mfg. Co., Ltd.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
11
13.
!
Caution
1 . Be sure to provide an appropriate fail-safe function on your product to prevent secondary damage
that may be caused due to abnormal functional or failure of this product.
2 . Inrush current protection is not a feature of this product.
3 . Please connect the input terminals with the correct polarity.If an error in polarity connection is made
this product may be damaged. If this product is damaged internally, an elevated input current may flow, and so
this product may exhibit an abnormal temperature rise, or your product may be damaged.
Please add a diode and fuse per the following diagram to protect them.
fuse
+
diode
※
+
IN
OUT
-
-
+
Load
Please select diode and fuse after confirming the operation of your product.
4. Limitation of Application
Please contact us before using this product for the applications listed below which require especially
high reliability for the prevention of defects, which might directly cause damage to the third party’s life,
body or property.
①Aircraft equipment
②Aerospace equipment
③Undersea equipment
④Power plant control equipment
⑤Medical equipment
⑥Transportation equipment (vehicles, trains, ships, etc.)
⑦Traffic signal equipment
⑧Disaster prevention /crime prevention equipment
⑨Any other application of similar complexity and/or reliability requirements to the
applications listed above.
14. Notice
14.1. Soldering
14.1.1. Flux
Please solder this product with Rosin Flux that contains of 0.2wt% or less chlorine.
Please do not use high activity acid flux or water-soluble flux as they may reduce the reliability
of this product.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
12
14.1.2. PCB Land Pattern Recommendation
1pin
8.0
2.8
2.54
8.0
1.5
There are wiring coppers or through-hole via at the bottom side of the DC-DC converter.
When you design your PCBs, please be careful not to short the circuit of the DC-DC converter or PCBs.
14.1.3. Soldering Conditions Recommendation
Reflow Soldering
This product is RoHS compliant. The following profile is recommended for the reflow of this
product using Pb-free solder paste (Sn-Ag-Cu).
Method
: Full convection reflow soldering
Reflow Soldering Profile
JEDEC IPC/JEDEC J-STD-020D
Table 5-2 Classification Reflow Profile
Pb-Free Assembly Large Body
Profile details
Soldering temperature
Soldering time
Heating time
Preheating time
Programming rate
Descending rate
Total soldering time
Times
:
:
:
:
:
:
:
:
245ºC+0/-5ºC
30 seconds, 240 to 245ºC
60 to 150 seconds, over217ºC
60 to 120 seconds,150 to 200ºC
3ºC/ sec. Max., 217 to 245ºC
6ºC/ sec. Max.
8 minutes Max., 25 to 245ºC
1 time
245oC
Parts surface temperature [ºC]
217 oC
200 oC
60∼150
(seconds)
150oC
60∼120 (seconds)
Times
※Do not vibrate for the products on reflow.
Please need to take care temperature control because mounted parts may come off if the product are left
under the high temperature.
Do not reflow DC-DC converter as follows, because DC-DC converter may fall down from a substrate
Substrate
during reflowing.
DC-DC Converter
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19
MPDTY321S Specification
13
14. 2. Cleaning
Please use no-cleaning type flux and do not wash this product.
14.3. Storage
14.3.1. Please store the products in room where the temperature/humidity is stable and direct sunlight cannot
come in, and use the products within 6 months after delivery.
Please avoid damp and heat or such places where the temperature greatly changes, as water may
condense on this product, and the quality of characteristics may be reduced, and/or be the solderability
may be degraded.
If this product needs to be stored for a long time (more than 1 year), this product may be degraded in
solderability and/or corroded. Please test the solderability of this product regularly.
Baking before reflow process is unnecessary to store the products under 30℃,60%RH or less up to 6
months.
In case the storage condition is over above mentioned, if these are unpacked condition, please bake them
at 125℃±5℃/24hour. If these are packed in a tape, please bake them before soldering at 60℃±5℃
/168hour.
14.3.2. Please do not store this product in places such as :
A dusty place, a place exposed directly to sea breeze, or in an atmosphere containing corrosive gas
(Cl2,NH3,SO2,NOX and so on).
14. 4. Operational Environment and Operational Conditions
14.4.1. Operational Environment
This product is not water-, chemical- or corrosion-proof.
In order to prevent leakage of electricity and abnormal temperature rise of the product,do not operate
under the following environmental conditions:
(1) An atmosphere containing corrosive gas (Cl2, NH3, SO2, NOX and so on)
(2) A high-dust environment
(3) Under the exposure of direct sunlight
(4) A location where the likelihood of exposure to water or water condensation exists.
(5) A location exposed to ocean air
(6) Any locations similar to the above
14.4.2. Operational Conditions
Please use this product within specified values (power supply, temperature, input, output and load
condition, and so on). If the product is exposed to conditions outside of the specified values reliability of
the product may be adversely effected.
14.4.3. Note prior to use
Diminished reliability and/ or failure may result if the product is exposed to a high-level static charge,
over-rated voltage or reverse voltage. Please avoid the following conditions be avoided prior to use of the
product:
(1) Supply of power outside of rated values (see section 8)
(2) Supply of reverse power or inadequate connection of a 0 V(DC)line
(3) Electrostatic discharge from production line and/ or operator
(4) Electrification of the product from electrostatic induction
(5) Excessive mechanical shock
14.5. Transportation
Murata recommends that when transporting this product, it be packed so as to avoid damage by mechanical
vibration or exposure to adverse conditions such as ocean air, high humidity. It is additionally recommended
that appropriate instructions and guidelines be communicated to carriers to prevent exposure to these same
conditions.
15. ! Note
1. Murata recommends that customers ensure that the evaluation and testing of these devices are completed with
this product actually assembled on their product.
2. All the items and parameters in this product specification have been prescribed on the premise that Murata’s
product is used for the purpose, under the condition and in the environment mutually agreed upon.
This document is for reference only and subject to revision without prior of subsequent notice.
Please contact Murata for latest documentation.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2009.8.19