LM5642MTC - TI

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

Part No

LM5642MTC
Manufacturer

TI
ChipWorker Part#

CW50702733
Category

DC to DC Converter
Package

TSSOP-28
Description

TEXAS INSTRUMENTS LM5642MTC DC-DC Controller, Current Mode, 4.5V to 36V, 2Outputs, Synchronous Buck, 250kHz, TSSOP-28
Documentation

Datasheet

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LM5642MTC Specifications

Attribute	Attribute Value

Part Number	LM5642MTC
Manufacturer	TI
ChipWorker Part#	CW50702733
Category	DC to DC Converter
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	28 Pin
Case/Package	TSSOP-28
Frequency	200 kHz
Supply Voltage (DC)	4.50V (min)
Number of Outputs	2 Output
Output Voltage	1.3V ~ 32.4V
Output Current	20 A
Number of Channels	2 Channel
Number of Positions	28 Position
Power Dissipation	1100 mW
Quiescent Current	1.10 mA
Number of Regulated Outputs	2 Output
Switching Frequency	200 kHz
Topology	Buck
Duty Cycle	98.9 %
Input Voltage (Max)	36 V
Input Voltage (Min)	4.5 V
Maximum Duty Cycle	0.989
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1100 mW
Supply Voltage	4.5V ~ 36V
Supply Voltage (Max)	36 V
Supply Voltage (Min)	4.5 V
Input Voltage	4.5V ~ 36V
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Operating Temperature	-40℃ ~ 125℃ (TJ)
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 LM5642MTC is a current-mode Buck Controller with oscillator synchronization. It consists of two current-mode synchronous buck regulator controllers operating 180° out of phase with each other at a normal switching frequency of 200kHz. Out of phase operation reduces the input RMS ripple current, thereby significantly reducing the required input capacitance. The switching frequency can be synchronized to an external clock between 150 and 250kHz. 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 1.3V to 90% of Vin. An internal 5V rail is also available externally for driving bootstrap circuitry. Current-mode feedback control assures excellent line and load regulation and wide loop bandwidth for excellent response to fast load transients.
Two synchronous buck regulators
180° Out-of-phase operation
50µA Shutdown current
0.04% Typical line and load regulation accuracy
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
Green product and no Sb/Br
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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