深圳市科瑞芯电子有限公司

微源半导体 LP6462SF SOT23-6 30V/2A同步降压转换器

General Description

The LP6462SF is a synchronous buck converter supporting up to 2A output current. The LP6462SF employs an adaptive constant-on-time (COT) control scheme to achieve fast load transient response. The external components are minimized, requiring only one inductor, two resistors, and two capacitors.

The LP6462 supports both aluminum polymer capacitors and ceramic capacitors without extra compensation components.

The LP6462 integrates PFM (Pulse Frequency Modulation) operation, which helps maintain the system efficiency at light load. The LP6462 also integrates multiple protection functions, i.e., over-current protection (OCP), overtemperature protection (OTP), under-voltage lockout (UVLO), and short circuit protection (SCP).

The LP6462 is available in a small 6-pin 1.6mmx2.9mm SOT23-6 package.

Features

◆ Wide input voltage range: 4.5V – 30V

◆ High efficiency operation

- Integrated an 80-mΩ LS-MOSFET and an 115-mΩ HS-MOSFET

- 91% efficiency at 2A load from 12V to 5V conversion

◆ Automatic PFM mode at light load (LP6462S, LP6462SH) and FPWM mode over all load range (LP6462SF, LP6462SHF)

◆ ±1% Vref accuracy

◆ Support 1.0-MHz and 500kHz different switching frequency versions

◆ COT control scheme with fast load transient response

◆ Hiccup protection

◆ Integrated UVLO, OVP, OCP, SCP, and OTP protections

◆ 600us typical soft-start time

◆ 1.6mm x 2.9mm SOT23-6 package

◆ RoHS Compliant and Lead (Pb) Free

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