Product Introduction

Product parameters

Funtion:PFM Step-Up DC-DC Controller IC

Opration Mode:PFM BOOST

Vout Range:Output Voltage up to 18V

Vin Range:2.7V-5.5V

Operating Current:32uA@5V

Chip Temperature Regulation:No


Max Output Power:35W

Chip Enable:Yes

On-chip Power MOSFET:No

General Description

The CN5318 is a simple, compact PFM boost controller designed for applications where extremely low cost and small size are top priorities. The output voltage can be adjusted by the external resistor divider with 1% feedback voltage accuracy from an input voltage range of +2.7V to +6.5V.

Low current consumption of 32uA typical makes CN5318 ideal for battery-powered applications.

The CN5318 is designed specifically to provide a simple application circuit and minimize the size and number of external components, making them ideal for consumer electronics applications.

The CN5318 adopts PFM operating mode, which provides excellent efficiency over a wide-range of input voltage and load currents. The on-time and off-time are tuned to permit optimization of external component size.

Chip enable input can make CN5318 into ultra-low-current shutdown mode.

The CN5318 is available in a space-saving 6-pin SOT23 package.



l  Hand-held Devices

l  Power Bank

l  Medical Equipment

l  Charger


l  Operating voltage range2.7V to 5.5V

l  Low Operating Current: 32uA@5V

l  Adjustable Output Voltage

l  Output Voltage up to 18V

l  Feedback Voltage Accuracy±1%

l  Output Power: up to 35W

l  High Efficiency: up to 94%

l  Chip Enable Input

l  Operating Temperature Range

      -40°C to +85°C

l  Available in SOT23-6

l  Pb-free, rohs-Compliant and Halogen-free

Tools and Documents




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