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Details for LM25119PSQE/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
LM25119PSQE/NOPB
Buy Directly from Texas Instruments (3780 in stock) $2.6300
IC BUCK CNTRL DUAL SYNC 32LLP
LM25119PSQE/NOPB image

LM25119PSQE/NOPB by Texas Instruments

IC BUCK CNTRL DUAL SYNC 32LLP
Features
AEC-Q100 Qualified With the Following Results: u2013 Device Temperature Grade 1: u201340u00b0C to 125u00b0C Ambient Operating Temperature Range u2013 Device HBM ESD Classification Level 1C u2013 Device CDM ESD Classification Level C4A
Automatic Switch-Over to External Bias Supply
Channel2 Enable Logic Input
Easily Configurable for Dual Outputs or Interleaved Single Output
Emulated Peak Current Mode Control
Hiccup Mode Overload Protection
LM25119-Q1 Qualified for Automotive Applications
Leadless 32-Pin WQFN Package
Optional Diode Emulation Mode
Precision 1.5% Voltage Reference
Programmable Current Limit
Programmable Line Undervoltage Lockout
Programmable Output From 0.8 V
Programmable Soft-Start
Robust 3.3-A Peak Gate Drive
Switching Frequency Programmable to 750 kHz
Thermal Shutdown
Wide Operating Range (4.5 V to 42 V)
Part Information
LM25119PSQE/NOPB image
RoHS Compliant
Description
The LM25119 device is a dual synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting and easeof-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulsewidth modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The switching frequency is programmable from 50 kHz to 750 kHz. The LM25119 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A high voltage bias regulator with automatic switch-over to external bias further improves efficiency. Additional features include thermal shutdown, frequency synchronization, cycle-by-cycle and hiccup mode current limit and adjustable line undervoltage lockout. The device is available in a power enhanced leadless 32-pin WQFN package featuring an exposed die attach pad to aid thermal dissipation.
Specifications
Supply Voltage Min:
4.5V
Supply Voltage Max:
42V
No. of Outputs:
2 Output, 2Outputs
Duty Cycle (%):
98%
Controller IC Case Style:
LLP
No. of Pins:
32Pins
Switching Frequency:
750kHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (27-Jun-2018)
Operating Temperature Range:
-40°C to +125°C
Output Current:
20A
Primary Input Voltage:
42V
Alternate Descriptions
IC, BUCK, CNTRL, DUAL, SYNC, 32LLP; Supply Voltage Min:4.5V; Supply Voltage Max:42V; No. of Outputs:2 Output; Duty Cycle (%):98%; Controller IC Case Style:LLP; No. of Pins:32Pins; Switching Frequency:750kHz; Topology:Synchronous BuckRoHS Compliant: Yes Newark Electronics
Current Mode PWM Controller 0.8V 20A 32-Pin LLP EP T/R Avnet America
Current Mode PWM Controller 0.8V 20A 32-Pin LLP EP T/R Avnet Europe
4.5-42V Wide Vin, Current Mode Dual Synchronous Buck Controller Texas Instruments