Datasheet

ManualsBrandsMURATA POWER SOLUTIONS ManualsPSU ComponentsDC/DC converter (SMD) 3.3 V 1000 mA 3 W No. of outputs: 1 x

1. Features

 Low EMI noise and small footprint

(11mm

 High efficiency using sy

nchronous rectifier technology at 4MHz operation.

 Power-Save mode / Forced

PWM automatic mode switching function

 2% DC output voltage accuracy (

PWM mode

 1A maximum load capability

 Wide input voltage range : 2.5 -

5.5V

 Fixed output voltage : 1.0

V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V

 Internal soft start

, over current protection

2. Description

The LXDC3EP series is a

1A output

noise-sensitive application.

The device

eliminates radiated EMI noise and conduction

With just this device, it

can be used as a LDO replacement

quality.

The LXDC3EP series has a mode pin that allows the user to select Forced PWM mode or Power

changes modes between pulse-

skip operation and

In Power-

Save mode, LXDC3EP series offers superior efficiency under light load condition

battery life. When Forced PWM mode is selected, it works at

advantages of this mode are easy filtering of

The integrated over current protection and the thermal shutdown protection features offer

operation.

3. Typical Application Circuit

(11mm

)using inductor-imbedded ferrite substrate

nchronous rectifier technology at 4MHz operation.

PWM automatic mode switching function

PWM mode

5.5V

V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V

, over current protection

, thermal shutdown protection

1A output

step-down DC-DC converter, which is

suitable

The device

utilizes an inductor-embedded

ferrite substrate, and the substrate

eliminates radiated EMI noise and conduction

noise efficiently.

can be used as a LDO replacement

. Its low noise feature

assures reliable power supply

The LXDC3EP series has a mode pin that allows the user to select Forced PWM mode or Power

skip operation and

PWM operation

automatically depending on the load.

Save mode, LXDC3EP series offers superior efficiency under light load condition

battery life. When Forced PWM mode is selected, it works at

fixed frequency (4MHz)

advantages of this mode are easy filtering of

the switching frequency and a

better load transient response.

The integrated over current protection and the thermal shutdown protection features offer

LXDC3EP series

Micro DC-DC converter

Dec 2014

suitable

for a space-limited or

ferrite substrate, and the substrate

assures reliable power supply

The LXDC3EP series has a mode pin that allows the user to select Forced PWM mode or Power

-Save mode that

automatically depending on the load.

Save mode, LXDC3EP series offers superior efficiency under light load condition

s, and it extends the

fixed frequency (4MHz)

within the load range. The

better load transient response.

The integrated over current protection and the thermal shutdown protection features offer

reliable power supply

Summary of content (25 pages)

PAGE 1
LXDC3EP series Micro DC-DC converter 1. Features         2 Low EMI noise and small footprint (11mm )using inductor-imbedded ferrite substrate High efficiency using synchronous nchronous rectifier technology at 4MHz operation. Power-Save mode / Forced PWM automatic mode switching function 2% DC output voltage accuracy (PWM PWM mode mode). 1A maximum load capability Wide input voltage range : 2.5 - 5.5V Fixed output voltage : 1.0V, V, 1.2V, 1.5V, 1.8V, 2.5V, 3.
PAGE 2
LXDC3EP series Micro DC-DC converter 4. Mechanical details 4-1 Out line TOP VIEW SIDE VIEW BOTTOM VIEW W W L unit (mm) Symbol Dimension Symbol Dimension L 3.5+/- 0.2 a 0.2+/- 0.2 W 3.2+/- 0.2 b 0.8+/- 0.1 T 1.3MAX c 0.4+/- 0.1 d 0.7+/- 0.1 e 0.6+/- 0.
PAGE 3
LXDC3EP series Micro DC-DC converter 4-2 Pin function Pin Symbol I/O Function EN Input This is the ON/OFF control pin of the device. The device is in shutdown mode when the voltage to this pin is below 0.4V. Pulling this pin above 1.2V turns on the device with a soft start. This pin should not be left floating. EN=H: Device ON, EN=L: Device OFF 2,3,5,6,9 GND － 4 Vout Output 7 MODE Input Regulated voltage output pin. Apply output load between this pin and GND.
PAGE 4
LXDC3EP series Micro DC-DC converter 5. Ordering Information Part number Output Voltage Device Specific Feature MOQ LXDC3EP10A-176 1.0V Standard type T/R,1000pcs/R LXDC3EP12A-104 1.2V Standard type T/R,1000pcs/R LXDC3EP15A-105 1.5V Standard type T/R,1000pcs/R LXDC3EP18A-106 1.8V Standard type T/R,1000pcs/R LXDC3EP25A-109 2.5V Standard type T/R,1000pcs/R LXDC3EP33A-107 3.3V Standard type T/R,1000pcs/R 6.
PAGE 5
LXDC3EP series Micro DC-DC converter 6-2 Electrical Characteristics (Ta=25 oC) Parameter Symbol Condition Min. Typ. Max. 2.5 3.7 5.5 Unit LXDC3EP10A-176 LXDC3EP12A-104 Input voltage UVLO Voltage Output voltage accuracy Load current range Vin LXDC3EP15A-105 V LXDC3EP18A-106 LXDC3EP25A-109 3.0 3.7 5.5 LXDC3EP33A-107 4.0 5.0 5.5 UVLO Vout 2.2 PWM Mode Vin-Vout>0.7V V LXDC3EP10A-176 0.976 1.0 1.024 LXDC3EP12A-104 1.176 1.2 1.224 LXDC3EP15A-105 1.47 1.5 1.
PAGE 6
LXDC3EP series Micro DC-DC converter Parameter Symbol Condition Min. Typ. Max. Unit SW Frequency Freq - 4 - MHz Over Current Protection OCP 1000 1200 1700 mA Start -up Time Ton - 170 - usec (*1)The above characteristics are tested using the application circuit in section 8 6-3 Thermal and Current De-rating Information The following figure shows an example of the power dissipation and temperature rise characteristics.
PAGE 7
LXDC3EP series Micro DC-DC converter Capacitor B1 Life vs Capacitor Case temperature 100000 Capacitor B1 Life (Tousand Hours) Vin=5V Vin=3.6V 10000 Vin=3.3V Vin=2.5V 1000 100 10 1 0.1 20 40 60 80 100 Capacitor Case Temprature (oC ) 120 The following steps should be taken before the designing for reliable operation. o 1. The ambient temperature of the device should be kept below 85 C 2. The case temperature should be measured on the worst condition of each application.
PAGE 8
LXDC3EP series Micro DC-DC converter 7. Detailed Description Power-Save Mode / Forced PWM Mode The MODE pin allows selecting the operating mode. If the MODE pin is pulled to logic low voltage (MODE-L), the converter operates automatic pulse-skip and PWM mode. In this mode, the converter operates pulse-skip mode at light load current, and when the load current increases, the operating mode will changes to PWM mode automatically.
PAGE 9
LXDC3EP series Micro DC-DC converter 8. Test Circuit MODE EN Vin LXDC3EP Vout Vin V-MODE (C) (Cout) V-EN RL GND *Optional：Cout: 4.7uF/6.3V (LXDC3EP33A-107) 9. Reference Land Pattern unit (mm) Symbol Dimension Symbol Dimension a 0.8 c 0.7 b 0.4 d 0.
PAGE 10
LXDC3EP series Micro DC-DC converter 10. Measurement Data Micro DC-DC Converter evaluation board (P2LX0457B) Measurement setup Enable SW Mode SW GND_S VIN_S GND V VIN A V VOUT_S GND_S Load VOUT GND A The enable switch has three positions. 1. When it is toggled “ON”, the device starts operation. 2. When it is toggled “OFF”, the device stops operation and shuts down. 3.
PAGE 11
LXDC3EP series Micro DC-DC converter Typical Measurement Data (reference purpose only) (Ta=25℃) Efficiency Vin=3.7V, Vout=1.2V 100 100 90 90 80 80 70 70 EFF [%] EFF [%] Vin=3.7V, Vout=1.0V 60 60 50 50 40 40 30 30 1 10 100 1,000 1 10 Iout [mA] 100 1,000 100 1,000 Vin=3.7V, Vout=1.8V 100 100 90 90 80 80 70 70 EFF [%] EFF [%] 1,000 Iout [mA] Vin=3.7V, Vout=1.5V 60 60 50 50 40 40 30 30 1 10 100 1,000 1 10 Iout [mA] Iout [mA] Vin=3.7V, Vout=2.
PAGE 12
LXDC3EP series Micro DC-DC converter Road Requlation Vin=3.7V, Vout=1.2V 1.02 1.224 1.01 1.212 Vout [V] Vout [V] Vin=3.7V, Vout=1.0V 1 0.99 1.2 1.188 1.176 0.98 0 100 200 300 400 500 0 600 100 200 400 500 600 400 500 600 400 500 600 Vin=3.7V, Vout=1.8V 1.53 1.836 1.515 1.818 Vout [V] Vout [V] Vin=3.7V, Vout=1.5V 1.5 1.485 1.8 1.782 1.47 1.764 0 100 200 300 400 500 600 0 100 200 Iout [mA] 300 Iout [mA] Vin=3.7V, Vout=2.5V Vin=5.0V, Vout=3.3V 2.
PAGE 13
LXDC3EP series Micro DC-DC converter Output Ripple-Noise Vin=3.7V, Vout=1.2V 60 60 50 50 40 40 Vrpl [mVpp] Vrpl [mVpp] Vin=3.7V, Vout=1.0V 30 20 10 30 20 10 0 0 0 200 400 600 800 1000 0 200 400 Iout [mA] 800 1000 Vin=3.7V, Vout=1.8V 60 60 50 50 40 40 Vrpl [mVpp] Vrpl [mVpp] Vin=3.7V, Vout=1.5V 30 20 10 30 20 10 0 0 0 200 400 600 800 1000 0 200 400 Iout [mA] 600 800 1000 800 1000 Iout [mA] Vin=3.7V, Vout=2.5V Vin=5.0V, Vout=3.
PAGE 14
LXDC3EP series Micro DC-DC converter Typical Measurement Data (reference purpose only) Load Transient Response ・Vin=2.3V,Vout=1.2V Vin=3.7V,Vout=1.
PAGE 15
LXDC3EP series Micro DC-DC converter Vin=5.5V,Vout=1.2V Vin=5.0V,Vout=3.
PAGE 16
LXDC3EP series Micro DC-DC converter Vin=5.5V,Vout=3.
PAGE 17
LXDC3EP series Micro DC-DC converter 11.Reliability Tests No. 1 2 3 Items Vibration Resistance Result (NG) 18 G (0) Frequency : 10~2000 Hz 2 Acceleration : 196 m/s Direction : X,Y,Z 3 axis Period : 2 h on each direction Total 6 h. 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. Deflection : 1.
PAGE 18
LXDC3EP series Micro DC-DC converter No. 6 7 8 9 Items Specifications Test Methods High Temp. Exposure Temperature：85±2 ℃ Period：1000+48/-0 h Room Condition：2～24h Temperature Cycle Condition：100 cycles in the following table Humidity (Steady State) Appearance No severe damages Electrical specifications Satisfy specifications listed in paragraph 6-2. Low Temp. Exposure Step Temp(°C) Time(min) 1 Min. Operating Temp.+0/-3 30±3 2 Max. Operating Temp.
PAGE 19
LXDC3EP series Micro DC-DC converter 12. Tape and Reel Packing 1）Dimensions of Tape (Plastic tape) Unit: mm Φ1.5+0.1 0 ｃ (0.30) 1.75±0.1 (5.5) (3.8) 12.0±0.2 2.0±0.05 (3.5) (1.35) 4.0±0.1 8.0±0.1 Feeding direction 2） Dimensions of Reel Unit: mm 2±0.5 φ60 φ180 φ13±0.2 (13.0) 15.4±1.
PAGE 20
LXDC3EP series Micro DC-DC converter 3）Taping Diagrams [1] Feeding Hole : [2] Hole for chip : As specified in (1) [3] Cover tape : 50um in thickness [4] Base tape : As specified in (1) [3] [3] As specified in (1) [1] [1] [2] [2] [3] [3] [4] [4] Feeding Hole Feeding Direction Chip 20 Dec 2014
PAGE 21
LXDC3EP series Micro DC-DC converter 4）Leader and Tail tape A B Components 部品収納部 Symbol C Items Ratings(mm) A No components at trailer min 160 B No components at leader min 100 C Whole leader min 400 5）The tape for modules is wound clockwise with the feeding holes to the right side as the tape is pulled towards the user. 6）Packaging unit: 1,000 pcs./ reel 7） Material： Base Tape Reel … Plastic … Plastic Antistatic coating for both base tape and reel 8）Peeling of force 0.7 N max. 0.1~1.
PAGE 22
LXDC3EP series Micro DC-DC converter NOTICE 1. Storage Conditions: To avoid damaging the solderability of the external electrodes, be sure to observe the following points. - Store products where the ambient temperature is 15 to 35 °C and humidity 45 to 75% RH. (Packing materials, In particular, may be deformed at the temperature over 40 °C.). - Store products in non corrosive gas (Cl2, NH3,SO2, Nox, etc.). - Stored products should be used within 6 months of receipt.
PAGE 23
LXDC3EP series Micro DC-DC converter 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.
PAGE 24
LXDC3EP series Micro DC-DC converter 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.
PAGE 25
LXDC3EP series Micro DC-DC converter 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.