Datasheet

ManualsBrandsMURATA POWER SOLUTIONS ManualsPSU ComponentsDC/DC converter (SMD) 1.8 V 600 mA 1 W No. of outputs: 1 x

LXDC2HL series

Micro DC-DC converter

Dec 2014

1. Features

 Low EMI noise and small footprint (5mm

) using inductor-embedded ferrite substrate

 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

 Wide input voltage range : 2.3~5.5V

 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 LXDC2HL 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 input/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), and shows very smooth mode transition between PFM mode and PWM mode.

3. Typical Application Circuit

4.7uF

10uF

LXDC2HL

GND

Vin Vout

Enable

VBAT

Vout

1.8V/600mA

Summary of content (30 pages)

PAGE 1
LXDC2HL series Micro DC-DC converter 1. Features 2  Low EMI noise and small footprint (5mm ) using inductor-embedded ferrite substrate  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  Wide input voltage range : 2.3~5.
PAGE 2
LXDC2HL series Micro DC-DC converter 4. Mechanical details 4-1 Outline Device&Trace Code Top View 1 pin Mark a X X X W 1 2 4 3 Bottom View b ２あ c c L IC Side View Capacitor T Substrate Unit: mm Mark Dimension L 2.5 +/- 0.2 W 2.0 +/- 0.2 T 1.1 MAX a 0.85 +/- 0.1 b 0.60 +/- 0.1 c 0.15 +/- 0.15 4-2. Pin Function Pin 1 Symbol Vin I/O Input 2 EN Input 3 Vout Output 4 GND - Description Vin pin supplies current to the LXDC2HL internal regulator.
PAGE 3
LXDC2HL series Micro DC-DC converter 4-3. Functional Block Diagram 5. Ordering Information Part number Output Voltage Device Specific Feature MOQ LXDC2HL10A-080 1.0V Standard Type T/R, 3000pcs/R LXDC2HL11A-314 1.1V Standard Type T/R, 3000pcs/R LXDC2HL12A-050 1.2V Standard Type T/R, 3000pcs/R LXDC2HL1CA-322 1.25V Standard Type T/R, 3000pcs/R LXDC2HL13A-082 1.3V Standard Type T/R, 3000pcs/R LXDC2HL1DA-087 1.35V Standard Type T/R, 3000pcs/R LXDC2HL15A-051 1.
PAGE 4
LXDC2HL series Micro DC-DC converter 6. Electrical Specification 6-1 Absolute maximum ratings Parameter Input voltage Operating ambient temperature rating Vin, EN 6.3 Ta Operating IC temperature TIC Storage temperature 6-2 Symbol TSTO Unit V -40 to +85 o -40 to +125 o -40 to +85 o C C C Electrical characteristics (Ta=25℃) Parameter Symbol Condition Min. Typ. Max. Unit Input voltage Vin 2.3 3.6 5.5 V UVLO voltage UVLO 1.0 1.4 1.
PAGE 5
LXDC2HL series Micro DC-DC converter Parameter Symbol Condition Min. Typ. Max. Unit LXDC2HL10A-080 LXDC2HL11A-314 LXDC2HL12A-050 LXDC2HL1CA-322 LXDC2HL13A-082 0 600 LXDC2HL1DA-087 Load current range Iout mA LXDC2HL15A-051 LXDC2HL18A-052 LXDC2HL23A-323 0 500 LXDC2HL28A-243 0 450 LXDC2HL30A-054 0 400 LXDC2HL33A-055 0 300 LXDC2HL25A-053 LXDC2HL10A-080 LXDC2HL11A-314 LXDC2HL12A-050 LXDC2HL1CA-322 Vin=3.
PAGE 6
LXDC2HL series Micro DC-DC converter Parameter Symbol Condition Vin=3.6V, Iout=150mA Efficiency EFF Vin=5V, Iout=150mA EN control voltage SW Frequency VENH ON ; Enable VENL OFF ; Disable Min. Typ. LXDC2HL10A-080 78 LXDC2HL11A-314 79 LXDC2HL12A-050 80 LXDC2HL1CA-322 81 LXDC2HL13A-082 81 LXDC2HL1DA-087 82 LXDC2HL15A-051 83 LXDC2HL18A-052 85 LXDC2HL23A-323 87 LXDC2HL25A-053 88 LXDC2HL28A-243 86 LXDC2HL30A-054 87 LXDC2HL33A-055 88 Fosc Max. Unit % 1.4 Vin V 0 0.
PAGE 7
LXDC2HL series Micro DC-DC converter 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. Loss - ΔT Characteristics (Vin=3.6V, Vo=1.8V) 50 350 45 40 300 35 250 ΔT ( oC） Power Dissipation (mW) Io - Loss Characteristics (Vin=3.6V, Vo=1.
PAGE 8
LXDC2HL series Micro DC-DC converter Capacitor B1 Life vs Capacitor Case temperature 100000 Vin=5V Vin=3.6V ) s r 10000 u o H d n 1000 a s u o T ( 100 fe i L 1 B r 10 o ti c a p a C 1 Vin=3.3V Vin=2.5V 0.1 20 40 60 80 100 120 Capacitor Case Temprature (o C ) (In above chart, Y-axis label spelling should say “Thousand”, X-axis label spelling should say “Temperature”…. The following steps should be taken before the design fix of user’s set for reliable operation. o 1.
PAGE 9
LXDC2HL series Micro DC-DC converter 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.
PAGE 10
LXDC2HL series Micro DC-DC converter 8. Test Circuit Cin : 4.7uF/6.3V (GRM188B30J475K) Cout : 10uF/6.3V (GRM188B30J106M) 9. Reference Land Pattern Unit: mm Mark Dimension a 0.85 b 0.60 c 0.5 d 0.2 Notes: this land layout is for reference purpose only.
PAGE 11
LXDC2HL series Micro DC-DC converter 10. Measurement Data Micro DC-DC Converter evaluation board (P2LX0244) Measurement setup 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 3. When it is set to middle of “ON” and “OFF”, the EN pin floats and shut down status. an external voltage can be applied to the EN terminal pin on the EVB.
PAGE 12
LXDC2HL series Micro DC-DC converter Typical Measurement Data (reference purpose only) (Ta=25℃) Efficiency ・Vin=3.6V, Vout=1.0V ・Vin=3.6V, Vout=1.2V Efficiency 85 75 80 EFF [%] EFF [%] Efficiency 80 70 65 75 70 60 65 1 10 100 1000 1 10 Iout [mA] 100 1000 100 1000 ・Vin=3.6V, Vout=1.5V Efficiency Efficiency 85 85 80 80 EFF [%] EFF [%] 1000 Iout [mA] ・Vin=3.6V, Vout=1.35V 75 70 75 70 65 65 1 10 100 1000 1 10 Iout [mA] Iout [mA] ・Vin=3.6V, Vout=1.8V ・Vin=3.
PAGE 13
LXDC2HL series Micro DC-DC converter ・Vin=5.0V, Vout=3.0V ・Vin=5.0V, Vout=3.
PAGE 14
LXDC2HL series Micro DC-DC converter Typical Measurement Data (reference purpose only) (Ta=25℃) Load Regulation ・Vin=3.6V, Vout=1.0V Load Regulation 1.024 Load Regulation 1.224 1.012 Vout [V] Vout [V] ・Vin=3.6V, Vout=1.2V 1.000 0.988 1.212 1.200 1.188 0 100 200 300 400 500 600 0 100 200 Iout [mA] Load Regulation 600 500 600 500 600 Load Regulation 1.530 1.515 Vout [V] Vout [V] 500 ・Vin=3.6V, Vout=1.5V 1.364 1.350 1.500 1.485 1.337 1.470 1.
PAGE 15
LXDC2HL series Micro DC-DC converter ・Vin=5.0V, Vout=3.0V ・Vin=5.0V, Vout=3.3V Load Regulation 3.060 3.333 Vout [V] 3.030 Vout [V] Load Regulation 3.366 3.000 3.300 2.970 3.267 2.940 3.
PAGE 16
LXDC2HL series Micro DC-DC converter Typical Measurement Data (reference purpose only) Output Ripple-Noise ・Vin=3.6V, Vout=1.0V, BW : 150MHz ・Vin=3.6V, Vout=1.2V, BW: 150MHz Output Ripple Noise Vrpl [mV] Vrpl [mV] Output Ripple Noise 50 45 40 35 30 25 20 15 10 5 0 0 100 200 300 400 500 50 45 40 35 30 25 20 15 10 5 0 600 0 100 200 Iout [mA] 300 400 500 600 0 100 200 600 500 600 Output Ripple Noise Vrpl [mV] Vrpl [mV] Output Ripple Noise 300 400 ・Vin=3.6V, Vout=2.
PAGE 17
LXDC2HL series Micro DC-DC converter ・Vin=5.0V, Vout=3.0V, BW: 150MHz ・Vin=5.0V, Vout=3.
PAGE 18
LXDC2HL series Micro DC-DC converter Typical Measurement Data (reference purpose only) (Ta=25℃) Load Transient Response ・Vin=3.6V, Vout=1.0V 100mV/div 58mV -88mV ΔIo=600mA ・Vin=3.6V, Vout=1.
PAGE 19
LXDC2HL series Micro DC-DC converter ・Vin=3.6V, Vout=1.35V 66mV 100mV/div -86mV ΔIo=600mA ・Vin=3.6V, Vout=1.
PAGE 20
LXDC2HL series Micro DC-DC converter ・Vin=3.6V, Vout=1.8V 100mV/div 76mV -108mV ΔIo=600mA ・Vin=3.6V, Vout=2.
PAGE 21
LXDC2HL series Micro DC-DC converter ・Vin=5.0V, Vout=3.0V 100mV/div 106mV -128mV ΔIo=400mA Vin=5.0V, Vout=3.
PAGE 22
LXDC2HL series Micro DC-DC converter 8.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 23
LXDC2HL 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 24
LXDC2HL series Micro DC-DC converter 9. Tape and Reel Packing 1）Dimensions of Tape (Plastic tape) Unit: mm Feeding direction Unit: mm 2） Dimensions of Reel 2±0.5 Φ60 Φ13±0.2 Φ180 (9.0) 13.0±1.
PAGE 25
LXDC2HL series Micro DC-DC converter 3）Taping Diagrams [1] Feeding Hole : As specified in (1) [2] Hole for chip : As specified in (1) [3] Cover tape : 50um in thickness [4] Base tape : As specified in (1) [3] [1] [2] [3] [4] Feeding Hole Feeding Direction Chip 25 Dec 2014
PAGE 26
LXDC2HL 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 chips are wound clockwise and the feeding holes are to the right side as the tape is pulled toward the user. 6）Packaging unit: 3,000 pcs./ reel 7） Material： Reel Base Tape … Plastic … Plastic Antistatic coating for both base tape and reel 8）Peeling of force 0.7 N max. 0.1~1.
PAGE 27
LXDC2HL 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 28
LXDC2HL 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 29
LXDC2HL 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 30
LXDC2HL 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.