LM1770UMF/NOPB Texas Instruments - Yeehing Electronics

Low-Voltage SOT23 Synchronous Buck Controller With No External Compensation

Pricing (USD)

Quantity	Unit Price
1 — 99	1.823
100 — 249	1.506
250 — 999	1.082
1,000 +	0.57

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Switching Controllers
RoHS	Y
Number of Outputs	1 Output
Switching Frequency	0.1 MHz to 1 MHz
Duty Cycle - Max	95 %
Input Voltage	2.8 V to 5.5 V
Output Voltage	0.8 V to 4.5 V
Output Current	4 A
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Mounting Style	SMD/SMT
Package / Case	SOT-23-5
Packaging	Reel
Operating Temperature Range	- 40 C to + 125 C
Series	LM1770
Type	Synchronous Buck Controller
Brand	Texas Instruments
Product Type	Switching Controllers
Factory Pack Quantity	1000
Subcategory	PMIC - Power Management ICs
Unit Weight	0.000282 oz

For more information, please refer to datasheet

Documents

LM1770UMF/NOPB Datasheet

More Information

The LM1770 is an efficient synchronous buck switching controller in a tiny SOT-23 package. The constant on-time control scheme provides a simple design free of compensation components, allowing minimal component count and board space. It also incorporates a unique input feed-forward to maintain a constant frequency independent of the input voltage. The LM1770 is optimized for a low voltage input range of 2.8V to 5.5V and can provide an adjustable output as low as 0.8V. Driving an external high side PFET and low side NFET it can provide efficiencies as high as 95%.