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LMR14203XMKX/NOPB +BOM

Buck Switching Regulator IC Positive Adjustable 0.765V 1 Output 300mA SOT-23-6 Thin, TSOT-23-6

Manufacturer:

TI
Mfr.Part #:

LMR14203XMKX/NOPB
Datasheet:

LMR14203XMKX/NOPB Datasheet (PDF)
Vin (min) (V):

4.5
Vin (max) (V):

42
Vout (min) (V):

0.765
Vout (max) (V):

34
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LMR14203XMKX/NOPB General Description

The LMR14203 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low R_DSON (0.9Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 1.25 MHz allowing the use of small external components while still being able to have low output voltage ripple. Soft-start can be implemented using the shutdown pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.

The LMR14203 is optimized for up to 300 mA load current.

Additional features include: thermal shutdown, V_IN under-voltage lockout, and gate drive under-voltage lockout. The LMR14203 is available in a low profile SOT-6L package.

Key Features

Input Voltage Range of 4.5V to 42V
Output Voltage Range of 0.765V to 34V
Output Current up to 0.3A
1.25 MHz Switching Frequency
Low Shutdown Iq, 16 µA Typical
Short Circuit Protected
Internally Compensated
Soft-Start Function
Thin SOT-23-6 Package (2.97 x 1.65 x 1mm)
Fully Enabled for WEBENCH® Power Designer

Performance Benefits

Tight Accuracy for Powering Digital ICs
Extremely Easy to Use
Tiny Overall Solution Reduces System Cost

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Specifications

Vin (min) (V)	4.5	Vin (max) (V)	42
Vout (min) (V)	0.765	Vout (max) (V)	34
Iout (max) (A)	0.3	Iq (typ) (mA)	1.3
Switching frequency (min) (kHz)	950	Switching frequency (max) (kHz)	1500
Features	Enable, Over Current Protection	Operating temperature range (°C)	-40 to 125
Rating	Catalog	Regulated outputs (#)	1
Control mode	current mode	Duty cycle (max) (%)	87
Type	Converter