LM5140QRWGTQ1

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Details for Texas Instruments

LM5140QRWGTQ1

Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller
Buy Directly from Texas Instruments (2877 in Stock)
$3.2200 per unit
Series Information for LM5140QRWGTQ1 - Texas Instruments

Description

DC/DC CTRL SYNC BUCK 2.2MHZ
The LM5140-Q1 is a dual synchronous buck controller intended for high voltage wide VIN stepdown converter applications. The control method is based on current mode control. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting, and easier loop compensation. The LM5140-Q1 features adjustable slew rate control to simplify compliance with the CISPR and automotive EMI requirements. The LM5140-Q1 operates at selectable switching frequencies of 2.2 MHz or 440 kHz with the two controller channels switching 180º out of phase. In light or no-load conditions, the LM5140-Q1 operates in skip cycle mode for improved low power efficiency. The LM5140-Q1 includes a high voltage bias regulator with automatic switchover to an external bias supply to improve efficiency and reduce input current. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overloads, independent power good outputs, and independent enable inputs.

Specifications

Supply Voltage Min:
3.8V
Supply Voltage Max:
65V
No. of Outputs:
2Outputs
Duty Cycle (%):
50%
Controller IC Case Style:
VQFNP
No. of Pins:
40Pins
Switching Frequency:
2.2MHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
150°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (27-Jun-2018)
Input Voltage Max:
65V

Alternate Descriptions

Avnet America

Current Mode PWM Controller 1.5V to 15V 40mA 40-Pin VQFNP T/R

Avnet America product

Avnet Europe

Current Mode PWM Controller 1.5V to 15V 40mA 40-Pin VQFNP T/R

Avnet Europe product

Texas Instruments

Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller

Texas Instruments product