TPP36409

3-V to 36-V Input, 4-A, Low Quiescent Current Synchronous Step-Down Regulator

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概述

The TPP36409 is a high-efficiency synchronous stepdown regulator with integrated high-side and low-side MOSFETs. It provides up to 4-A output current with constant frequency, peak current mode control for fast loop response. The switching frequency is resistor programmable from 200 kHz to 2.2 MHz.

The TPP36409 operates over a wide input voltage range from 3 V to 36 V with ultra-low quiescent current. It is ideal for battery-powered systems due to its extremely low quiescent current. The switching frequency automatically foldbacks to improve efficiency in the light load or standby operation. With external bias option and low integrated MOSFET resistance, the device can also ensure high efficiency in the full load range.

The TPP36409 features 55-ns minimum on time and low drop-out mode, which can maintain stable operation for high-frequency conditions. EMI performance is specially optimized in TPP36409. The device features a frequency spread spectrum method, adjustable switch node slew rate, optimized symmetrical pinout, and EMI friendly package to optimize the EMI emissions.

The TPP36409 integrates soft recovery from low-dropout mode to reduce the output overshoot. The TPP36409 has built-in robust protections such as thermal shutdown, UVLO, OVP, enable (EN) control, and power good (PG) indicator. Additionally, during the overload or short circuit condition, the accurate cycle by cycle current limit and hiccup protection are provided. Thermal shutdown provides reliable and fault-tolerant operation.

The TPP36409 is available in the QFN4x3.5-14 package.

Status

Production
Rating

Industrial
VIN (V)

3~36
Output (V)

1~36
Max Output Current (A)

4
Control Mode

Peak Current Mode
Switching Frequency (kHz)

200-2200
Features

Low Iq, Spread Spectrum
Temperature Range (℃)

-40 to +125
Package

QFN4X3.5-14

开发资源

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- 思瑞浦模拟产品选型册
  
  选型手册
  
  中文
  
  01/19/2024
- Datasheet_TPP36409
  
  数据手册
  
  英文
  
  11/04/2025
  
  3-V to 36-V Input, 4-A, Low Quiescent Current Synchronous Step-Down Regulator
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- Application Tips on ESD-EOS
  
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