TD1728 Datasheet PDF

Techcode TD1728

The TD1728 is a single‐phase, constant‐on‐time, z Adjustable Output Voltage from +0.7V to +5.5V synchronous PWM controller, which drives N‐channel z 0.7V Reference Voltage MOSFETs. The TD1728 steps down high voltage to z ±1% Accuracy Over‐Temperature generate low‐voltage chipset or RAM supplies in notebook z Operates from an Input Battery Voltage Range of +1.8V computers. to +32V The TD1728 provides excellent transient response and z Power‐On‐Reset Monitoring on VCC Pin accurate DC voltage output in either PFM or PWM Mode.

Part No.	TD1728
Datasheet	TD1728 Download
Manufacturer	Techcode
Description	High-Performance PWM Controller
Buy	Stock & Price

GENERAL DESCRIPTION

FEATURES

In z Excellent Line and Load Transient Responses Pulse Frequency Mode (PFM), the TD1728 provides very high z PFM Mode for Increased Light Load Efficiency efficiency over light to heavy loads with loading‐ modulated z Selectable PWM Frequency from 4 Preset Values switching frequencies. In PWM Mode, the converter works z Integrated MOSFET Drivers nearly at constant frequency for low‐noise requirements. z Integrated Bootstrap Forward P‐CH MOSFET The TD1728 is equipped with accurate positive current‐ limit, z Adjustable Integrated Soft‐Start and Soft‐Stop output under‐voltage, and output over‐voltage z Selectable Forced PWM or Automatic PFM/PWM Mode protections, perfect for NB applications. The Power‐On‐ z Power Good Monitoring Reset function monitors the voltage on VCC to prevent z 70% Under‐Voltage Protection wrong operation during power‐on. The TD1728 has a 1ms z 125% Over‐Voltage Protection digital soft‐start and built‐in an integrated output z Adjustable Current‐Limit Protection discharge method for soft‐stop.