LM5119PSQE/NOPB Texas Instruments - Yeehing Electronics

5.5-65V Wide Vin, Current Mode Dual Synchronous Buck Controller

Pricing (USD)

Quantity	Unit Price
1 — 99	6.315
100 — 249	5.148
250 — 999	4.046
1,000 +	2.40

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
Output Voltage	0.8 V
Output Current	3300 mA
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	LM5119
Type	Current Mode PWM Controllers
Brand	Texas Instruments
Development Kit	LM5119EVAL/NOPB
Fall Time	5 ns
Moisture Sensitive	Yes
Operating Supply Current	6 mA
Operating Supply Voltage	5.5 V to 65 V
Product Type	Switching Controllers
Rise Time	6 ns
Factory Pack Quantity	250
Subcategory	PMIC - Power Management ICs
Unit Weight	0.002092 oz

For more information, please refer to datasheet

Documents

LM5119PSQE/NOPB Datasheet

More Information

The LM5119 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 LM5119 device 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.