Datasheets
LMR14203XMKX/NOPB by: Texas Instruments

4.5V to 42V, 0.3A Step-Down DC/DC Switching Regulator in SOT-23 6-SOT-23-THIN -40 to 125

Part Details for LMR14203XMKX/NOPB by Texas Instruments

Results Overview of LMR14203XMKX/NOPB by Texas Instruments

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LMR14203XMKX/NOPB Information

LMR14203XMKX/NOPB by Texas Instruments is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Price & Stock for LMR14203XMKX/NOPB

Part # Distributor Description Stock Price Buy
DISTI # 296-38769-1-ND
DigiKey IC REG BUCK ADJ 300MA SOT23 Min Qty: 1 Lead time: 12 Weeks Container: Digi-Reel®, Cut Tape (CT), Tape & Reel (TR) 2989
In Stock
  • 1 $2.0900
  • 10 $1.5480
  • 25 $1.4108
  • 100 $1.2604
  • 250 $1.1886
  • 500 $1.1453
  • 1,000 $1.1098
  • 3,000 $1.0658
  • 6,000 $1.0443
  • 9,000 $1.0335
$1.0335 / $2.0900 Buy Now
DISTI # 926-LMR14203XMKXNOPB
Mouser Electronics Switching Voltage Regulators SIMPLE SWITCHER 42 V in 0.3A SD Vltg Reg A 926-LMR14203XMKENOPB RoHS: Compliant 1408
  • 1 $2.0900
  • 10 $1.5500
  • 25 $1.4200
  • 100 $1.2700
  • 250 $1.1900
  • 500 $1.1500
  • 1,000 $1.1100
  • 3,000 $1.0300
  • 6,000 $1.0100
$1.0100 / $2.0900 Buy Now
Bristol Electronics   9000
RFQ
DISTI # LMR14203XMKX/NOPB
TME PMIC, DC/DC converter, Uin: 4.5÷42VDC, Uout: 0.765÷34VDC, 0.3A Min Qty: 3000 0
  • 3,000 $1.3000
$1.3000 RFQ
LCSC Step-down type Adjustable 765mV34V 4.5V42V 300mA SOT-23-6 DC-DC Converters ROHS 1966
  • 1 $0.7753
  • 10 $0.6245
  • 30 $0.5484
  • 100 $0.4737
  • 500 $0.4296
  • 1,000 $0.4052
$0.4052 / $0.7753 Buy Now
Vyrian Other Function Semiconductors 17248
RFQ
Win Source Electronics Conv DC-DC 4.5V to 42V Step Down Single-Out 0.765V to 34V 0.3A 6-Pin TSOT-23 T/R / IC REG BUCK ADJ 0.3A 6TSOT 41290
  • 65 $0.5381
  • 135 $0.5035
  • 210 $0.4861
  • 300 $0.4514
  • 385 $0.4340
  • 480 $0.4167
$0.4167 / $0.5381 Buy Now

Part Details for LMR14203XMKX/NOPB

LMR14203XMKX/NOPB CAD Models

LMR14203XMKX/NOPB Part Data Attributes

LMR14203XMKX/NOPB Texas Instruments
Buy Now Datasheet
Compare Parts:
LMR14203XMKX/NOPB Texas Instruments 4.5V to 42V, 0.3A Step-Down DC/DC Switching Regulator in SOT-23 6-SOT-23-THIN -40 to 125
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code SOT-23
Package Description TSOT-23, 6 PIN
Pin Count 6
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer Texas Instruments
Additional Feature ALSO OPERATES IN ADJUSTABLE MODE FROM 0.765 TO 34V
Analog IC - Other Type SWITCHING REGULATOR
Control Mode CURRENT-MODE
Control Technique PULSE WIDTH MODULATION
Input Voltage-Max 42 V
Input Voltage-Min 4.5 V
Input Voltage-Nom 12 V
JESD-30 Code R-PDSO-G6
JESD-609 Code e3
Length 2.97 mm
Moisture Sensitivity Level 1
Number of Functions 1
Number of Outputs 1
Number of Terminals 6
Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C
Output Current-Max 0.3 A
Output Voltage-Max 34 V
Output Voltage-Min 0.765 V
Package Body Material PLASTIC/EPOXY
Package Code VSSOP
Package Equivalence Code TSOP6,.11,37
Package Shape RECTANGULAR
Package Style SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Seated Height-Max 1 mm
Surface Mount YES
Switcher Configuration BUCK
Switching Frequency-Max 1500 kHz
Temperature Grade AUTOMOTIVE
Terminal Finish Matte Tin (Sn)
Terminal Form GULL WING
Terminal Pitch 0.95 mm
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) 30
Width 1.65 mm

Alternate Parts for LMR14203XMKX/NOPB

This table gives cross-reference parts and alternative options found for LMR14203XMKX/NOPB. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LMR14203XMKX/NOPB, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LMR14203XMKE/NOPB Texas Instruments $1.1587 4.5V to 42V, 0.3A Step-Down DC/DC Switching Regulator in SOT-23 6-SOT-23-THIN -40 to 125 LMR14203XMKX/NOPB vs LMR14203XMKE/NOPB
LMR14203XMK/NOPB Texas Instruments $2.5659 4.5V to 42V, 0.3A Step-Down DC/DC Switching Regulator in SOT-23 6-SOT-23-THIN -40 to 125 LMR14203XMKX/NOPB vs LMR14203XMK/NOPB

LMR14203XMKX/NOPB Related Parts

LMR14203XMKX/NOPB Frequently Asked Questions (FAQ)

  • A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, and ensuring good copper pour coverage around the device. Additionally, using a 2-3 layer PCB with a solid ground plane can help to reduce thermal resistance.

  • To ensure stability and prevent oscillations, it's essential to follow the recommended component values and PCB layout guidelines. Additionally, adding a small ceramic capacitor (e.g., 10nF) between the output and ground can help to filter out high-frequency noise and improve stability.

  • The maximum input voltage that can be applied to the LMR14203XMKX/NOPB is 42V. Exceeding this voltage can cause damage to the device.

  • The output voltage ripple and noise can be calculated using the equations provided in the datasheet. Additionally, the output voltage ripple can be measured using an oscilloscope and a low-pass filter can be added to reduce the ripple.

  • The recommended input capacitor value is 10uF to 22uF, and a low-ESR ceramic capacitor (e.g., X5R or X7R) is recommended for optimal performance.

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