Datasheets
LMR14203XMK/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 LMR14203XMK/NOPB by Texas Instruments

Results Overview of LMR14203XMK/NOPB by Texas Instruments

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LMR14203XMK/NOPB Information

LMR14203XMK/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 LMR14203XMK/NOPB

Part # Distributor Description Stock Price Buy
DISTI # 29AH1070
Newark Buck, 0.3A, 42Vin, Topology:Buck (Step Down), Input Voltage Min:4.5V, Input Voltage Max:42V, No. Of Outputs:1Outputs, Dc/Dc Converter Ic Case:Sot-23, No. Of Pins:6Pins, Output Current:300Ma, Output Voltage Min:765Mv, Output Voltagerohs Compliant: Yes |Texas Instruments LMR14203XMK/NOPB RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 0 Container: Cut Tape 416
  • 1 $2.5600
  • 10 $2.5600
  • 25 $2.5600
  • 50 $2.5600
  • 100 $2.5600
  • 250 $2.5600
  • 500 $2.5600
$2.5600 Buy Now
DISTI # 296-35194-1-ND
DigiKey IC REG BUCK ADJ 300MA SOT23 Min Qty: 1 Lead time: 6 Weeks Container: Digi-Reel®, Cut Tape (CT), Tape & Reel (TR) 1116
In Stock
  • 1 $2.4600
  • 10 $1.8310
  • 25 $1.6732
  • 100 $1.4990
  • 250 $1.4160
  • 500 $1.3660
  • 1,000 $1.3248
  • 2,000 $1.2909
  • 3,000 $1.2739
  • 5,000 $1.2551
  • 7,000 $1.2441
$1.2441 / $2.4600 Buy Now
DISTI # 926-LMR14203XMK/NOPB
Mouser Electronics Switching Voltage Regulators SIMPLE SWITCHER 42 V in 0.3A SD Vltg Reg A 926-LMR14203XMKENOPB RoHS: Compliant 1072
  • 1 $2.4600
  • 10 $1.8400
  • 25 $1.6800
  • 100 $1.5000
  • 250 $1.4200
  • 500 $1.3700
  • 1,000 $1.3200
  • 2,000 $1.2400
  • 5,000 $1.2100
$1.2100 / $2.4600 Buy Now
Bristol Electronics   2117
RFQ
Quest Components SWITCHING REGULATOR, 1500 KHZ SWITCHING FREQ-MAX, PDSO6 800
  • 1 $3.6596
  • 355 $1.5096
  • 663 $1.3724
$1.3724 / $3.6596 Buy Now
DISTI # LMR14203XMK/NOPB
TME PMIC, DC/DC converter, Uin: 4.5÷42VDC, Uout: 0.765÷34VDC, 0.3A Min Qty: 1000 0
  • 1,000 $1.5600
$1.5600 RFQ
NexGen Digital   1
RFQ
LCSC Step-down type Adjustable 765mV34V 300mA 4.5V42V SOT-23-6 DC-DC Converters ROHS 20
  • 1 $1.1159
  • 10 $0.8987
  • 30 $0.8037
  • 100 $0.7103
  • 500 $0.6545
  • 1,000 $0.6258
$0.6258 / $1.1159 Buy Now
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 40220
  • 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 LMR14203XMK/NOPB

LMR14203XMK/NOPB CAD Models

LMR14203XMK/NOPB Part Data Attributes

LMR14203XMK/NOPB Texas Instruments
Buy Now Datasheet
Compare Parts:
LMR14203XMK/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 LMR14203XMK/NOPB

This table gives cross-reference parts and alternative options found for LMR14203XMK/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 LMR14203XMK/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 LMR14203XMK/NOPB vs LMR14203XMKE/NOPB

LMR14203XMK/NOPB Related Parts

LMR14203XMK/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 thermal conductivity between the device and the PCB. A 2-layer or 4-layer PCB with a solid ground plane is recommended. Additionally, placing vias under the device can help to dissipate heat more efficiently.

  • To ensure stability and prevent oscillations in the output voltage, it is recommended to use a minimum output capacitance of 10uF, and to place the output capacitor close to the output pin. Additionally, using a low-ESR capacitor and minimizing the distance between the output capacitor and the output pin can help to reduce oscillations.

  • The recommended input capacitor value is 10uF to 22uF, and a low-ESR ceramic capacitor (X5R or X7R dielectric) is recommended. The input capacitor should be placed close to the input pin to minimize noise and ensure optimal performance.

  • To protect the device from overvoltage and undervoltage conditions, it is recommended to use a voltage supervisor or a reset IC to monitor the input voltage and reset the device if it falls outside the recommended operating range. Additionally, using a TVS diode or a zener diode can help to protect the device from voltage spikes and transients.

  • The recommended operating temperature range for the LMR14203XMK/NOPB is -40°C to 125°C. However, the device can operate up to 150°C with reduced performance and reliability.

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