LM2642MTC - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LM2642MTC
Manufacturer

TI
ChipWorker Part#

CW69032100
Category

Power Management IC
Package

TSSOP-28
Description

DC-DC Controller, 2-Phase, 4.5V to 30V, 2Outputs, Synchronous Buck, 340kHz, TSSOP-28
Documentation

Datasheet

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LM2642MTC Specifications

Attribute	Attribute Value

Part Number	LM2642MTC
Manufacturer	TI
ChipWorker Part#	CW69032100
Category	Power Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	28 Pin
Case/Package	TSSOP-28
Frequency	300 kHz
Supply Voltage (DC)	4.50V (min)
Number of Outputs	2 Output
Output Voltage	5 V
Output Current	20 A
Supply Current	1 mA
Number of Channels	2 Channel
Number of Positions	28 Position
Power Dissipation	1100 mw
Quiescent Current	1.00 mA
Number of Regulated Outputs	2 Output
Switching Frequency	340 kHz
Topology	Buck
Duty Cycle	98 %
Input Voltage (Max)	30 V
Input Voltage (Min)	4.5 V
Output Voltage (Max)	27 V
Output Voltage (Min)	1.238 V
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1100 mW
Supply Voltage	4.5V ~ 30V
Supply Voltage (Max)	30 V
Supply Voltage (Min)	4.5 V
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Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Cut Tape (CT)
RoHS	Non-Compliant
Lead-Free Status	Contains Lead
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15

Product Description

The LM2642MTC is a 2-phase emulated two current-mode synchronous Buck Controller with a switching frequency of 300kHz. It operates 180° out of phase. This feature reduces the input ripple RMS current, there by significantly reducing the required input capacitance. The two switching regulator outputs can also be paralleled to operate as a dual-phase single output regulator. The output of each channel can be independently adjusted from 1.3 to VIN maximum duty cycle. An internal 5V rail is also available externally for driving bootstrap circuitry. Current-mode feedback control assures excellent line and load regulation and a wide loop bandwidth for excellent response to fast load transients. Current is sensed across either the Vds of the top FET or across an external current-sense resistor connected in series with the drain of the top FET. Current limit is independently adjustable for each channel.
0.04% Typical line and load regulation error
Current mode control with or without a sense resistor
Independent enable/soft-start pins allow simple sequential startup configuration
Configurable for single output parallel operation
Adjustable cycle-by-cycle current limit
Input under-voltage lockout
Output over-voltage latch protection
Output under-voltage protection with delay
Thermal shutdown
Self-discharge of output capacitors when the regulator is OFF
Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

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