規格
| 屬性 | 價值 |
| Package / Case | Tray |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3.4V |
| Voltage - Input (Max) | 42V |
| Voltage - Output (Min/Fixed) | 0.97V |
| Voltage - Output (Max) | 12V |
| Current - Output | 5A |
| Frequency - Switching | 200kHz ~ 3MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount, Wettable Flank |
概述
Description
LT8636HV#PBF is Linear Technology’s (now Analog Devices) dual high‑voltage synchronous buck regulator with integrated MOSFETs. It’s designed to convert a high input voltage (typical automotive/industrial range, up to about 80–85V) into two low‑voltage rails. The device provides two independent buck regulators under a single control core, using current‑mode PWM for fast transient response. Features include programmable switching frequency, soft‑start, enable control, and protections: overcurrent, overvoltage, undervoltage lockout, and thermal shutdown. It also offers status signaling (power‑good) and fault reporting. The PBF suffix denotes Pb‑free packaging. Typical applications: automotive power topologies, pre‑regulation stages, and point‑of‑load rails in industrial equipment. For exact specs, pinout, and package details, consult the LT8636HV datasheet and the PBF package outline.
Features
Here are the typical features of LT8636HV#PBF:
- High-voltage input range up to 100 V
- Dual synchronous buck regulator with integrated MOSFETs
- Adjustable output voltages via external resistor networks
- Programmable switching frequency
- Current-mode control with fast transient response
- Enable/shutdown control and soft-start
- Protection: overcurrent/short-circuit, overvoltage, undervoltage lockout
- Thermal shutdown/protection
- Remote sense capability
- Pb-free, RoHS-compliant package (PBF)
- High-voltage input range up to 100 V
- Dual synchronous buck regulator with integrated MOSFETs
- Adjustable output voltages via external resistor networks
- Programmable switching frequency
- Current-mode control with fast transient response
- Enable/shutdown control and soft-start
- Protection: overcurrent/short-circuit, overvoltage, undervoltage lockout
- Thermal shutdown/protection
- Remote sense capability
- Pb-free, RoHS-compliant package (PBF)
Pinout
- Pin count/package: 28-pin Pb-free (PBF) QFN (4x4 mm) for LT8636HV.
- Function: High-voltage, dual synchronous buck/boost regulator controller. Provides two switching legs (LX1/LX2) with bootstrap high-side drivers (BOOT1/BOOT2) for input up to high voltages (typical automotive range). Includes VIN, EN, FB1/FB2, ISENSE1/ISENSE2, GND/AGND, PGOOD, and protection features (current limit, overvoltage/undervoltage, thermal, etc.).
- Function: High-voltage, dual synchronous buck/boost regulator controller. Provides two switching legs (LX1/LX2) with bootstrap high-side drivers (BOOT1/BOOT2) for input up to high voltages (typical automotive range). Includes VIN, EN, FB1/FB2, ISENSE1/ISENSE2, GND/AGND, PGOOD, and protection features (current limit, overvoltage/undervoltage, thermal, etc.).
Manufacturer
Manufacturer: Analog Devices, Inc. (ADI). It is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits, including power-management ICs. It acquired Linear Technology (the original maker of LT parts) in 2017.
Application
LT8636HV#PBF is a high-voltage, wide-input-range DC-DC regulator. Typical application areas include:
- Automotive power management (12–100V systems, load dumps, battery rails)
- Industrial and telecom DC-DC supplies
- Solar/battery charging and energy-harvesting front ends
- High-power LED lighting drivers
- Portable equipment requiring a wide input range and efficient conversion
Note: Use case depends on the exact topology (buck/boost/buck-boost) configured per your design.
- Automotive power management (12–100V systems, load dumps, battery rails)
- Industrial and telecom DC-DC supplies
- Solar/battery charging and energy-harvesting front ends
- High-power LED lighting drivers
- Portable equipment requiring a wide input range and efficient conversion
Note: Use case depends on the exact topology (buck/boost/buck-boost) configured per your design.
Package
Pb-free QFN (leadless) package.
