MAX5019CSA

Frequency - Switching:	275kHz
Base Part Number:	MAX5019
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Enable, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	85%
Series:	--
Voltage - Supply (Vcc/Vdd):	13 V ~ 36 V
Output Phases:	1
Number of Outputs:	1
Topology:	Flyback
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MAX5019CSA is a low voltage, low power step-down DC-DC switching controller with integrated dual-power MOSFETs. It operates from a 2.3V to 5.5V supply voltage and provides up to 1.2A switch current in a so-called "fixed frequency pulse-width modulation" mode. The controller supports both fixed and adjustable operating settings, as well as internal soft-start and current limit features, for reducing component stress and improving system reliability.This controller is designed to efficiently power microprocessors and other low-voltage integrated circuits that require a regulated output voltage. Its dual-power MOSFETs provide low on-resistance which gives the controller a best-in-class efficiency over a wide range of switching frequencies.ApplicationMAX5019CSA is ideal for use in applications requiring efficient, low-power dc-dc conversion, such as cellular phone chargers, tablet and laptop power supplies, automotive battery chargers, and LED lighting systems. The controller can also be used to generate 3.3V and 5V rails in power-sensitive applications like automotive, medical, and industrial systemsWorking PrincipleThe MAX5019CSA uses fixed frequency pulse width modulation (PWM) to generate an output voltage from an input voltage. The controller adjusts the duty cycle of the switch so that the average output voltage is the desired value, which is set by an external resistor divider.The controller is driven by an oscillator with a constant period. The duty cycle of the oscillator determines the duration of the switch on period relative to the off period. The duty cycle can be adjusted by varying the oscillator frequency, or by using a frequency-compensated current-limit feature which decreases the oscillator frequency in response to increased output current. This ensures that the accurate output current is maintained, regardless of the duty cycle.To limit the duty cycle, the controller can be configured to halt switching operation at a predetermined duty cycle. The MAX5019CSA also includes a power-good output, a soft-start feature, and over-temperature protection.The MAX5019CSA is packaged in a 4mm x 4mm VQFN package, and its operation is specified over a -40°C to +105°C temperature range.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description