Images are for reference only
LTC3850EUF#TRPBF
+BOMIC REG CTRLR BUCK 28QFN
-
ManufacturerAnalog Devices Inc.
-
Mfr. Part #LTC3850EUF#TRPBF
-
Datasheet LTC3850EUF#TRPBF DataSheet
-
Package QFN-28
-
In Stock7226
365 Days Quality Guarantee
7*24 hours service quarantee
90-day after-sales guarantee
Genuine Product Guarantee
Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 2 |
| Output Phases | 2 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 24V |
| Frequency - Switching | 250kHz ~ 780kHz |
| Duty Cycle(Max) | 97.2% |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Control Features | Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
Overview
Description
Key features include a programmable switching frequency, typically from 250kHz to 780kHz, and the ability to synchronize to an external clock. It offers both voltage-mode and current-mode control architectures. The LTC3850EUF#TRPBF supports PolyPhase operation, allowing multiple ICs to run out-of-phase, reducing input and output capacitor requirements.
It includes fault protection features such as overvoltage, overcurrent, and thermal shutdown. The controller provides soft-start capability and tracking for startup sequencing. Offered in a compact 4mm x 5mm QFN-28 package, the LTC3850EUF#TRPBF is well-suited for space-constrained applications while delivering reliable and efficient power conversion solutions.
Equivalent
1. LM5116 by Texas Instruments: A wide input voltage synchronous buck controller.
2. ISL8117 by Renesas: A synchronous buck PWM controller with wide input voltage.
3. TPS40170 by Texas Instruments: Wide input synchronous buck controller.
When selecting an equivalent, ensure compatibility in terms of input/output voltage, current requirements, and additional features.
Features
1. Wide Input Voltage Range: Operates from 4V to 24V, accommodating a variety of power sources.
2. Dual Outputs: Supports two independent output voltages, providing design flexibility.
3. Synchronous Rectification: Enhances efficiency by minimizing power loss during switching.
4. Current Mode Control: Ensures stable operation and fast transient response.
5. High Switching Frequency: Adjustable from 250kHz to 780kHz to optimize efficiency and component size.
6. Configurable Features: Includes programmable output voltage, soft-start, and frequency synchronization.
7. Protection Mechanisms: Built-in overvoltage, undervoltage, and overcurrent protection for enhanced reliability.
8. Compact Package: Available in a 4mm x 4mm QFN package, suitable for space-constrained applications.
These features make it suitable for a wide range of applications, including telecom, industrial, and automotive systems requiring efficient power management.
Pinout
The LTC3850 is packaged in a 28-lead (pin) 4mm x 5mm plastic QFN (Quad Flat No-Lead) package. The pins serve various functions including power input and output, feedback, compensation, and control inputs. Key functions include voltage feedback for regulation, a clock input for synchronization, RUN pins to enable or disable channels, and switching control for external MOSFETs.
This device's design allows for high-efficiency power conversion and can provide high current outputs, making it ideal for powering processors, FPGAs, ASICs, and other digital logic circuits.