Specification	LM5177DCPR

Clock Sync	True
Control Features	Enable, Soft Start, Power Good, Dead Time Control, Power on Reset
Duty Cycle (Max) [Max]	100 %
Frequency - Switching [Max]	2 MHz
Frequency - Switching [Min]	100 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	150 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	0.173 in, 4.4 mm
Package / Case	38-PowerTFSOP
Supplier Device Package	38-HTSSOP
Synchronous Rectifier	False
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) [Max]	78 V
Voltage - Supply (Vcc/Vdd) [Min]	3.5 V

LM5177 Series

60-V wide VIN synchronous 4-switch buck-boost controller with bidirectional operation

Part	Output Phases	Output Configuration	Output Type	Function	Clock Sync	Control Features	Package / Case	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Duty Cycle (Max) [Max]	Synchronous Rectifier	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Supplier Device Package	Frequency - Switching [Min]	Frequency - Switching [Max]	Topology	Mounting Type
Texas Instruments LM5177DCPR	1	Positive	Transistor Driver	Step-Up/Step-Down		Dead Time Control Enable Power Good Power on Reset Soft Start	0.173 in 4.4 mm	38-PowerTFSOP	150 °C	-40 °C	100 %		1	3.5 V	78 V	38-HTSSOP	100 kHz	2 MHz	Buck-Boost	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	2500	$ 3.68
Texas Instruments	LARGE T&R	1	$ 5.15
		100	$ 4.20
		250	$ 3.30
		1000	$ 2.80

Description

General part information

LM5177 Series

The LM5177 is a four switch buck-boost controller. The device provides a regulated output voltage if the input voltage is higher, equal, or lower than the adjusted output voltage. In power save mode, the device supports high efficiency with low output loads due to its low quiescence currents. The LM5177 runs at a fixed switching frequency, which can be set through the RT or SYNC pin. The switching frequency remains the same during buck, boost, and buck-boost operation. The integrated and optional average current monitor can help monitor and limit input and output current of the LM5177. This feature also supports charging backup power elements, like batteries or capacitors, with constant current (CC) and constant voltage (CV).