Product parameters

Funtion：500 mA PFM Step-Up DC-DC Controller

Opration Mode：PFM BOOST

Vin Range：2.7V-6V

Max Output Current：500mA

Operating Current：85uA

Chip Temperature Regulation：No

Package：SOT23-5

Chip Enable：No

On-chip Power MOSFET：Yes

General Description

CN5136 is a high-efficiency pulse frequency modulation (PFM) DC-DC converter, and the maximum output current capability is up to 500mA. CN5136 has an on-chip power transistor, thus greatly reduces the external component count. Other features include the maximum inductor current limit, soft-start circuit.

CN5136 output voltage can be set by external resistors. High accuracy on-chip voltage reference ensures the accuracy of the output voltage and low temperature drift.

CN5136 can operate from the voltage of 2.7V to 6V, which is very suitable for lithium and three nickel-metal hydride battery-powered applications.

The device is available in 5 pin SOT23 package and is fully specified over the -40°C to +85°C extended temperature range.

Applications

l  Mobile power

l  PDA and other portable products

l  Electric toys

l  Computer peripheral products

Features

l  Operating voltage range：2.7V to 6V

l  Integrated power transistor

l  Maximum inductor current limit function

l  Output voltage can be set by external resistor

l  Output voltage accuracy：±2%

l  High efficiency: 90%

l  On-chip soft-start circuit

l  Operating Temperature Range

      -40°C to +85°C

l  Available in SOT23-5

l  Pb-free