LXDC2HN typeA 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 transient 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 LXDC2HN series is a low power step-down DC-DC converter, which is suitable for a space-limited or a
noise-sensitive application. The device utilizes an inductor-embedded ferrite substrate, and the substrate
eliminates radiated EMI noise and conduction noise efficiently.
By just putting input/output capacitors, it can be used as a LDO replacement. Its low noise feature and easy to
assembly feature assures reliable power supply quality.
The device works in PFM mode at light load and it extends the battery life. At heavy load, its control mode
changes to PMW mode automatically and it keeps high efficiency using synchronous rectifying technology.
The device keeps good output voltage accuracy even in PFM mode. It keeps 2% DC voltage accuracy over full
current range (0-600mA), and shows very smooth mode transient between PFM mode and PWM mode.
LXDC2HN series has resin top coast to make it easy to be picked up in factory assembly.
3. Typical Application Circuit
1
July
2015
LXDC2HN typeA series
Micro DC-DC converter
4. Mechanical details
4-1 Outline
Top View
Device &Trace
Code
1 pin Mark
a
Bottom View
2
3
b
W
X X
X X X
L
Resin
1
c
4
c
Side View
T
Substrate
Unit: mm
Mark
L
W
T
a
b
c
2.5 +/- 0.2
2.0 +/- 0.2
1.2 MAX
0.85 +/- 0.1
0.60 +/- 0.1
0.15 +/- 0.15
Dimension
4-2. Pin Function
Pin
1
Symbol
Vin
I/O
Input
Description
Vin pin supplies current to the LXDC2HN internal regulator.
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.
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.
Ground pin
2
EN
Input
3
4
Vout
GND
Output
-
2
July
2015
LXDC2HN typeA series
Micro DC-DC converter
4-3. Functional Block Diagram
5. Ordering Information
Part number
LXDC2HN10A-132
LXDC2HN11A-214
LXDC2HN12A-099
LXDC2HN1CA-261
LXDC2HN13A-236
LXDC2HN1DA-133
LXDC2HN15A-126
LXDC2HN18A-097
LXDC2HN23A-324
LXDC2HN25A-134
LXDC2HN28A-235
LXDC2HN30A-135
LXDC2HN33A-136
Output Voltage
1.0V
1.1V
1.2V
1.25V
1.3V
1.35V
1.5V
1.8V
2.3V
2.5V
2.8V
3.0V
3.3V
Device Specific Feature
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Standard type
Please ask Murata representative.
MOQ
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
T/R, 3000pcs/R
# Output voltage can be set 50mV step from 0.8V to 4.0V.
6. Electrical Specification
6-1
Absolute maximum ratings
Parameter
Input voltage
Operating ambient temperature
Operating case temperature
Storage temperature
symbol
Vin, EN
Ta
T
C
T
STO
3
July
2015
rating
6.3
-40 to +85
-40 to +125
-40 to +85
Unit
V
o
o
o
C
C
C
MCU
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