LM25119PSQ/NOPB Texas Instruments - Yeehing Electronics

4.5-42V Wide Vin, Current Mode Dual Synchronous Buck Controller

Pricing (USD)

Quantity	Unit Price
1 — 99	5.053
100 — 249	4.119
250 — 999	3.238
1,000 +	1.55

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Switching Controllers
RoHS	Y
Topology	Buck
Number of Outputs	2 Output
Switching Frequency	50 kHz to 750 kHz
Duty Cycle - Max	95 %
Input Voltage	4.5 V to 42 V
Output Voltage	800 mV to 41.3 V
Output Current	40 A
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Mounting Style	SMD/SMT
Package / Case	WQFN-32
Packaging	Reel
Operating Temperature Range	- 40 C to + 125 C
Series	LM25119
Brand	Texas Instruments
Development Kit	LM25119EVAL/NOPB
Moisture Sensitive	Yes
Operating Supply Current	6 mA
Product Type	Switching Controllers
Factory Pack Quantity	1000
Subcategory	PMIC - Power Management ICs
Unit Weight	0.001411 oz

For more information, please refer to datasheet

Documents

LM25119PSQ/NOPB Datasheet

More Information

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 ease-of-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width 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 device drives external high-side and low-side N-channel MOS 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.