TPS563300集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

1 Features

• Configured for a wide range of applications

– 3.8-V to 28-V input voltage range

– 0.8-V to 22-V output voltage range

– 3-A continuous output current

– 0.8V ± 1.5 reference voltage (25°C)

– –40°C to 150°C operating junction temperature

– Integrated 76-mΩ and 32-mΩ MOSFETs

– 20-μA low quiescent current (typical)

– Maximum 98 duty cycle operation

– Precision EN threshold

• Ease of use and small solution size

– Peak current control mode with internal

compensation

– Pulse frequency modulation (PFM) for high

light-load efficiency

– 500-kHz fixed switching frequency

– EMI friendly with frequency spread spectrum

– Support start-up with prebiased output

– Cycle-by-cycle OC limit for both high-side and

low-side MOSFETs

– Non-latched protections for OTP, OCP, OVP,

UVP, and UVLO

– 1.6-mm × 2.1-mm SOT583 package

• Create a custom design using the TPS563300 with

the WEBENCH® Power Designer

2 Applications

• Building automation, appliances, industrial PC

• Multifunction printers, enterprise projectors

• Portable electronics, connected peripherals

• Smart speakers, monitors

• Distributed power systems with 5-V, 12-V, 19-V,

and 24-V input

3 Description

The TPS563300 is a high-efficiency, easy-to-use

synchronous buck converter with a wide input voltage

range of 3.8 V to 28 V, and supports up to 3-A

continuous output current and 0.8-V to 22-V output

voltage.

The device employs fixed-frequency peak current

control mode for fast transient response and good

line and load regulation. The optimized internal

loop compensation eliminates external compensation

components over a wide range of output voltage

and operation frequency. Pulse frequency modulation

(PFM) mode maximizes the light load efficiency. The

low quiescent current feature is beneficial for long

battery life time in low-power operation. The device

also has a frequency spread spectrum feature, which

helps with lowering down EMI noise.

The device provides complete protections including

OTP, OVP, UVLO, cycle-by-cycle OC limit, and UVP

with hiccup mode. This device is in a small SOT583

(1.6-mm × 2.1-mm) package with 0.5-mm pin pitch,

and has an optimized pinout for easy PCB layout and

promotes good EMI performance.