Integrated Circuits (ICs)

LM2657MTCX/NOPB

Obsolete

DC/DC CNTRLR DUAL-OUT STEP DOWN 500KHZ 28-PIN TSSOP T/R

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Integrated Circuits (ICs)

Obsolete

DC/DC CNTRLR DUAL-OUT STEP DOWN 500KHZ 28-PIN TSSOP T/R

Technical Specifications

Parameters and characteristics for this part

Specification	LM2657MTCX/NOPB

Clock Sync	False
Control Features	Current Limit, Power Good, Soft Start, Frequency Control, Enable
Duty Cycle (Max) [Max]	70 %
Frequency - Switching [Max]	500 kHz
Frequency - Switching [Min]	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	28-TSSOP
Package / Case	0.173 in
Package / Case [y]	4.4 mm
Supplier Device Package	28-TSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	28 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

Part	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Number of Outputs	Mounting Type	Control Features	Package / Case	Package / Case	Package / Case [y]	Topology	Output Phases	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Output Type	Duty Cycle (Max) [Max]	Function	Output Configuration
Texas Instruments LM2657MTCX/NOPB	4.5 V	28 V	2	Surface Mount	Current Limit Enable Frequency Control Power Good Soft Start	28-TSSOP	0.173 in	4.4 mm	Buck	2	28-TSSOP	-40 °C	125 ¯C	500 kHz	200 kHz	Transistor Driver	70 %	Step-Down	Positive
Texas Instruments LM2657MTC/NOPB	4.5 V	28 V	2	Surface Mount	Current Limit Enable Frequency Control Power Good Soft Start	28-TSSOP	0.173 in	4.4 mm	Buck	2	28-TSSOP	-40 °C	125 ¯C	500 kHz	200 kHz	Transistor Driver	70 %	Step-Down	Positive
Texas Instruments LM2657MTC	4.5 V	28 V	2	Surface Mount	Current Limit Enable Frequency Control Power Good Soft Start	28-TSSOP	0.173 in	4.4 mm	Buck	2	28-TSSOP	-40 °C	125 ¯C	500 kHz	200 kHz	Transistor Driver	70 %	Step-Down	Positive

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

General part information

Buck Regulator Positive Output Step-Down DC-DC Controller IC 28-TSSOP

Technical documentation and resources