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LM2745MTCX
IC REG CTRLR BUCK 14TSSOP
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- Fr. Teil #LM2745MTCX
- Paket
- Datenblatt LM2745MTCX DataSheet
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Spezifikationen
| Part Status | Obsolete |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 3V ~ 6V |
| Frequency - Switching | 50kHz ~ 1MHz |
| Duty Cycle (Max) | 86% |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 14-TSSOP |
| Base Product Number | LM2745 |
Übersicht
Description
Key features of the LM2745MTCX include its ability to support input voltages from 1.26V to 16V and its capability to deliver output voltages as low as 0.6V. It offers high efficiency through synchronous rectification and employs a voltage-mode control method. The controller includes a high-side FET driver and a low-side FET driver, which helps in reducing component count and simplifying circuit design.
Additional features include adjustable output voltage, soft-start capability, and protection mechanisms such as undervoltage lockout and overcurrent protection. These features make the LM2745MTCX suitable for use in a variety of electronics, including computing, telecommunications, and industrial systems, where reliable and efficient power management is critical.
Features
It features an adjustable switching frequency, usually from 50kHz to 1MHz, enabling designers to optimize the trade-off between efficiency and component size. The LM2745MTCX includes overcurrent protection, undervoltage lockout, and thermal shutdown to enhance reliability and protect against fault conditions. The device's small footprint and the availability in a thermally enhanced TSSOP package facilitate easy integration into compact designs.
Overall, the LM2745MTCX is suitable for applications such as point-of-load converters, distributed power systems, and other scenarios requiring efficient step-down voltage regulation with robust protection features.
Package
Pinout
1. BOOT: Supplies power to the high-side MOSFET driver.
2. UGATE: Drives the gate of the high-side MOSFET.
3. PHASE: Connects to the switching node.
4. LGATE: Drives the gate of the low-side MOSFET.
5. PGND: Power ground pin for the low-side driver.
6. VCC: Supplies power to the internal control circuitry.
7. FB: Feedback input for output voltage regulation.
8. COMP: Compensation pin for stability and transient response.
9. EN: Enable input to turn the controller on or off.
10. SS/TRACK: Soft-start/tracking input for controlled startup.
11. VDD: Supply voltage for the internal logic.
12. GND: Signal ground.
13. VIN: Input voltage supply pin.
14. SYNC: Synchronization input for frequency control.
15. RT: Resistor connection to set the switching frequency.
16. NC: No connection.
This configuration ensures efficient power regulation and flexibility for various applications.
Manufacturer
Application
Equivalent
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Zahlungen
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