LT1777CS#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock

Name: LT1777CS#PBF
Brand: Analog Devices
SKU: LT1777CS#PBF
Availability: InStock

The Analog Devices LT1777CS#PBF is a low-noise, current-mode PWM step-down switching regulator in a 16-pin SOIC package. It accepts a 7.4 V to 48 V input range and delivers regulated output voltages with minimal EMI, making it ideal for noise-sensitive industrial and telecom power supplies. Available from stock worldwide with lead-free RoHS-compliant construction.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LT1777CS#PBFSmall Outline Packages

Quick Facts

Manufacturer: Analog Devices
Package: Small Outline Packages
Pin Count: 16
Lifecycle: ACTIVE
Datasheet: LT1777CS#PBF Datasheet PDF
Category: Integrated Circuit
Price: From $3.6400(MOQ 19)
Temp Range: ?°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LT1777CS#PBF?

Wide 7.4 V to 48 V input range covers industrial 24 V and telecom 48 V bus voltages in a single device
Current-mode PWM control with low output noise for analog and RF power supply designs where EMI must be minimized
16-pin SOIC (S16) package with standard 1.27 mm pitch footprint enables compact layout and easy hand-soldering during prototyping
Internal slope compensation and cycle-by-cycle current limiting provide inherent short-circuit protection

What is LT1777CS#PBF used for?

The LT1777CS#PBF is designed for step-down power conversion in industrial control, test instrumentation, and telecom line-card applications where a wide input range of 7.4 V to 48 V and low output noise are simultaneously required. Its current-mode control architecture supports fast transient response for loads that switch abruptly, such as DSP or FPGA cores powered from a 24 V distribution bus. The 16-pin SOIC footprint integrates into dense power supply modules alongside filtering components.

What are the specifications of LT1777CS#PBF?

Pbfree Code	No
Manufacturer Package Code	05-08-1610 (S16)
YTEOL	9
Analog IC - Other Type	SWITCHING REGULATOR
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	48V
Input Voltage-Min	7.4V
Input Voltage-Nom	24V
JESD-30 Code	R-PDSO-G16
JESD-609 Code	e3
Number of Functions	1
Output Current-Max	1A
Package Body Material	PLASTIC/EPOXY
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Supply Current-Max (Isup)	4.5mA
Surface Mount	YES
Switcher Configuration	BUCK
Switching Frequency-Max	115kHz
Technology	BIPOLAR
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	30
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.01
Country of Origin	Malaysia

Where can I find the LT1777CS#PBF datasheet?

LT1777CS#PBF Datasheet Download

Official datasheet from Analog Devices

What are equivalent replacements for LT1777CS#PBF?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What input voltage range does LT1777CS#PBF support and which power bus standards does that cover?

The LT1777CS#PBF accepts input voltages from 7.4 V to 48 V, spanning standard 12 V, 24 V, and 48 V industrial and telecom distribution bus voltages. A single design using this regulator can be deployed across multiple product variants without changing the power conversion stage, reducing BOM complexity. The 48 V upper limit also suits PoE-powered equipment and railway auxiliary supplies.

How does the current-mode PWM control of LT1777CS#PBF benefit noise-sensitive applications?

Current-mode PWM control in the LT1777CS#PBF senses the inductor current on a cycle-by-cycle basis, allowing the regulator to respond within one switching cycle to load transients. This results in lower output voltage deviation during sudden load steps compared to voltage-mode controllers. Combined with the device's inherent low-noise switching topology, it is suitable for powering analog signal chains, ADCs, and RF modules where supply ripple below a few millivolts is required.

In which package does the LT1777CS#PBF come and what does that mean for PCB layout?

The LT1777CS#PBF is housed in a 16-pin SOIC (1.27 mm pitch, 10.3 mm body length) package. This wide-body SOIC provides adequate pin spacing to route the high-side switch, bootstrap, and feedback pins away from each other, reducing parasitic coupling. The exposed thermal pad is not present on this package, so a heat-slug PCB area is not required, but adequate copper pour around VIN and PGND pins is still recommended for thermal management at the maximum 48 V input.

Can LT1777CS#PBF be used in a 48 V telecom rack application, and what output voltages can it produce?

Yes. With a 48 V nominal input comfortably within the 7.4 V to 48 V rated range, the LT1777CS#PBF is directly applicable to telecom 48 V rack power conversion. Output voltage is set by an external resistor divider referenced to the internal 1.25 V reference, allowing output voltages from approximately 1.25 V up to several tens of volts. Common targets for 48 V step-down include 5 V, 3.3 V, and 12 V rails for mixed-logic and analog loads.

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About Analog Devices

Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.

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AvailabilityIn Stock

Reference Price (USD)

From $3.6400

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
19+	$5.8600	$111.34
50+	$3.6400	$182.00

pcs

Unit price: $5.8600 · Total: $111.34

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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Procurement Manager, VoltEdge Energy, India

LT1777CS#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock

What are the key features of LT1777CS#PBF?

What is LT1777CS#PBF used for?

What are the specifications of LT1777CS#PBF?

Compliance & Regulatory

Where can I find the LT1777CS#PBF datasheet?

What are equivalent replacements for LT1777CS#PBF?

Frequently Asked Questions

What input voltage range does LT1777CS#PBF support and which power bus standards does that cover?

How does the current-mode PWM control of LT1777CS#PBF benefit noise-sensitive applications?

In which package does the LT1777CS#PBF come and what does that mean for PCB layout?

Can LT1777CS#PBF be used in a 48 V telecom rack application, and what output voltages can it produce?

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