사양
| 속성 | 가치 |
| Supplier | Analog Devices Inc. |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Down, Step-Up/Step-Down |
| OutputConfiguration | Positive or Negative |
| Topology | Buck, Buck-Boost |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 4V ~ 36V |
| SynchronousRectifier | Yes |
| ClockSync | Yes |
| ControlFeatures | Enable, Power Good, Soft Start |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 16-SSOP (0.154, 3.90mm Width) |
개요
Description
LTC1778EGN#TRPBF is an Analog Devices Linear Technology buck (step-down) DC-DC switching regulator controller. It is not a complete regulator by itself—you use it with external components (inductor, diode or synchronous FETs, input/output caps, feedback resistors) to build a high-efficiency buck supply. Key features typically include current-mode PWM control, programmable switching frequency, soft-start, enable/UVLO, overcurrent protection, and thermal shutdown. It is designed to drive external MOSFETs and regulate an output voltage from a higher-voltage input.
The suffixes indicate packaging/production details: EGN denotes the Pb-free RoHS variant in an 8-pin package, and #TRPBF means Tape-and-Reel packaging (Pb-free). For exact electrical specs (input range, switching frequency, current limit, pinout) see the LTC1778 datasheet and the specific ordering information.
The suffixes indicate packaging/production details: EGN denotes the Pb-free RoHS variant in an 8-pin package, and #TRPBF means Tape-and-Reel packaging (Pb-free). For exact electrical specs (input range, switching frequency, current limit, pinout) see the LTC1778 datasheet and the specific ordering information.
Features
Here are the typical features of the LTC1778EGN#TRPBF (dual, 2-phase synchronous buck regulator):
- Dual, interleaved, synchronous buck regulators
- Wide input range: 4V to 36V
- Two independently adjustable outputs with remote sensing
- Integrated high-side and low-side MOSFETs (no external Schottky needed)
- 2-phase switching around ~2 MHz
- Current-mode control with programmable soft-start
- Enable input and power-good status
- Protections: UVLO, overcurrent/short-circuit protection, thermal shutdown, and overvoltage protection/latch
- High efficiency and fast transient response
- 20-pin TSSOP (EGN) package; RoHS-compliant with TRPBF (tape-and-reel)
Note: Exact numbers (e.g., current per channel, switching frequency, UVLO thresholds) are in the official datasheet; consult it for precise specifications.
- Dual, interleaved, synchronous buck regulators
- Wide input range: 4V to 36V
- Two independently adjustable outputs with remote sensing
- Integrated high-side and low-side MOSFETs (no external Schottky needed)
- 2-phase switching around ~2 MHz
- Current-mode control with programmable soft-start
- Enable input and power-good status
- Protections: UVLO, overcurrent/short-circuit protection, thermal shutdown, and overvoltage protection/latch
- High efficiency and fast transient response
- 20-pin TSSOP (EGN) package; RoHS-compliant with TRPBF (tape-and-reel)
Note: Exact numbers (e.g., current per channel, switching frequency, UVLO thresholds) are in the official datasheet; consult it for precise specifications.
Pinout
Pin count: 28 pins (LTC1778EGN is a 28‑lead package, typically a TSSOP-28). Function: Dual PWM switching regulator controller for DC‑DC power supplies; drives external MOSFETs (two‑channel buck topology), with features such as current‑mode control, enable/power‑good, soft‑start, and protection.
Manufacturer
- Manufacturer: Analog Devices, Inc. (ADI). The LTC prefix comes from Linear Technology, which ADI acquired in 2017; LTC1778 is now under Analog Devices.
- What kind of company: A global American semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits. It is publicly traded (NYSE: ADI).
- What kind of company: A global American semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits. It is publicly traded (NYSE: ADI).
Application
Applications of LTC1778EGN#TRPBF:
- CPU/GPU core voltage regulation (VRMs) in desktops, laptops, and servers
- Power rails for FPGAs, ASICs, DSPs and other high-performance ICs
- Telecom and networking equipment power supplies (multi-rail DC-DC)
- Automotive 12V to low-voltage rails and battery-management systems
- Industrial, automotive, and instrumentation equipment requiring compact, high-efficiency DC-DC converters
- Portable/battery-powered devices needing multiple synchronized buck regulators
- CPU/GPU core voltage regulation (VRMs) in desktops, laptops, and servers
- Power rails for FPGAs, ASICs, DSPs and other high-performance ICs
- Telecom and networking equipment power supplies (multi-rail DC-DC)
- Automotive 12V to low-voltage rails and battery-management systems
- Industrial, automotive, and instrumentation equipment requiring compact, high-efficiency DC-DC converters
- Portable/battery-powered devices needing multiple synchronized buck regulators
Package
An 8-pin MSOP package (MSOP-8). The #TRPBF suffix indicates Tape-and-Reel Pb-free packaging.
