深圳市宏德伟创科技有限公司(美国泰德授权代理可看证）
（原厂原装，美国设计，原厂技术支持，质量保证）
联系人：张小姐 QQ:1027977946
General Description
The
TD1730
is
a
single‐phase,
constant‐on‐time,
synchronous PWM controller, which drives N‐channel
MOSFETs. The TD1730 steps down high voltage to
generate low‐voltage chipset or RAM supplies in notebook
computers.
The TD1730 provides excellent transient response and
accurate DC voltage output in either PFM or PWM Mode. In
Pulse Frequency Mode (PFM), the TD1730 provides very high
efficiency over light to heavy loads with loading‐ modulated
switching frequencies. In PWM Mode, the converter works
nearly at constant frequency for low‐noise requirements.
The TD1730 is equipped with accurate positive current‐ limit,
output
under‐voltage,
and
output
over‐voltage
protections, perfect for NB applications. The Power‐On‐
Reset function monitors the voltage on VCC to prevent
wrong operation during power‐on. The TD1730 has a 1ms
digital soft‐start and built‐in an integrated output
discharge method for soft‐stop. An internal integrated
soft‐start ramps up the output voltage with programmable
slew rate to reduce the start‐up current. A soft‐stop function
actively discharges the output capacitors with controlled
reverse inductor current.
The TD1730 is available in 10pin TDFN 3x3 package.
Features
z Adjustable Output Voltage from +0.7V to +5.5V
z 0.7V Reference Voltage
z ±1% Accuracy Over‐Temperature
z Operates from an Input Battery Voltage Range of +1.8V
to +32V
z Power‐On‐Reset Monitoring on VCC Pin
z Excellent Line and Load Transient Responses
z PFM Mode for Increased Light Load Efficiency
z Selectable PWM Frequency from 4 Preset Values
z Integrated MOSFET Drivers
z Integrated Bootstrap Forward P‐CH MOSFET
z Adjustable Integrated Soft‐Start and Soft‐Stop
z Selectable Forced PWM or Automatic PFM/PWM Mode
z Power Good Monitoring
z 70% Under‐Voltage Protection
z 125% Over‐Voltage Protection
z Adjustable Current‐Limit Protection
z Using Sense Low‐Side MOSFET’s R
DS(ON)
z Over‐Temperature Protection
z Auto Rework from Protection Mode
z TDFN‐10 3x3 Package
z Lead Free and Green Devices Available (RoHS Compliant)
Applications
z Notebook
z Table PC
z Hand‐Held Portable
z AIO PC
z LCD Monitor / TV
z Battery Charger
z ADSL Modem
z Telecom / Networking Equipment
