MAX5003ESE+

Frequency - Switching:	50kHz ~ 300kHz
Base Part Number:	MAX5003
Supplier Device Package:	16-SO
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control, On Time Control, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	75%
Series:	--
Voltage - Supply (Vcc/Vdd):	10.75 V ~ 18.75 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive, Isolation Capable
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Not For New Designs
Packaging:	Tube

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MAX5003ESE+ Application Field and Working Principle

The MAX5003ESE+ is a high-efficiency, low-power, DC-DC switching controller. It is specifically designed to drive external power MOSFETs in buck or boost type switching Regulators. This device is a fully integrated, single-chip controller that delivers enhanced efficiency and power saving performance for a range of consumer and computing applications.The MAX5003ESE+ belongs to the PMIC – Voltage Regulators – DC DC Switching Controllers family. It is designed to be used in different battery-powered consumer and computing applications where efficient step-down or step-up power delivery is required. Common applications include: Smartphones, Wearable Devices, Tablets, Notebooks/Netbooks, DSC/DVC, LCD Monitor/TV, Replaceable (printed) Battery/Coin Cell, Industrial Controllers, Medical Instruments, DC Motor Control and Lighting Applications. The MAX5003ESE+ provides regulated output voltage with programming methods to accommodate the widely varying conditions that the device will actually experience in the real life. The device includes the necessary control and monitoring functions such as feed-forward and cycles-by-second switching for improved transient response, soft start for protecting the input source from inrush current, and input under-voltage lock-out (UVLO) to prevent damage from engine start-up and Brown-Out conditions. Moreover, it has built-in overcurrent protection (OCP) and following the input current limit, and output over-voltage protection (OVP) to ensure the safety and reliability in power delivery. The MAX5003ESE+ provides synchronous or asynchronous operation with internal oscillator (typical oscillator frequency is 300 KHz/500 KHz asymmetrical pulses, adjustable frequency range of 300 KHz~1 MHz). In addition, it integrates auto-skip operation under light load conditions with excellent power efficiency performance. The device also has variable output voltage option with the ON/OFF enable pin. In addition, the programmable frequency hopping (FH) reduces the electromagnetic interference (EMI) spectrum and improves the system variability. The MAX5003ESE+ operates from a wide-range input voltage (4 V~60 V), providing a 90% superior efficiency for step-down and step-up topologies. To improve the system performance, it programs the Duty Cycle (DC) parameters separately for light load and heavy load operation. Moreover, it features a shutdown mode to reduce the input current of the system to 10 MT and an adjustable UVLO for low Iq applications. To sum up, the MAX5003ESE+ is an ideal choice for efficient and power saving performance in High Input voltage Step-Down and Step-Up Regulators Applications. It offers robust and reliable performance in a variety of applications.

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