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T  echcode®

DATASHEET

 

 

 

1.6A 23V Synchronous Rectified Step-Down Converte TD1482

General Description 

Features   

The TD1482 is a monolithic synchronous buck •   1.6A Output Current

regulator. The device integrates two 130mΩ •   Wide 4.75V to 23V Operating Input Range

MOSFETs, and provides 1.6A of continuous load •   Integrated 130mΩ Power MOSFET Switches

current over a wide input voltage of 4.75V to 23V. •   Output Adjustable from 0.923V to 20V

Current mode control provides fast transient •   Up to 93% Efficiency

response and cycle-by-cycle current limit.

•   Programmable Soft-Start

An adjustable soft-start prevents inrush current at

turn-on, and in shutdown mode the supply current

•  

Stable with Low ESR Ceramic Output Capacitors

drops to 1µA.

•   Fixed 340KHz Frequency

This device, availablein an SOP8

package, •   Cycle-by-Cycle Over Current Protection

provides a very compact solution with minimal external •   Input Under Voltage Lockout

components. 

Applications 

•   Distributed Power Systems

•   Networking Systems

•   FPGA, DSP, ASIC Power Supplies

•   Green Electronics/ Appliances

• Notebook Computers

Package Types 

 

 

 

 

 

 

 

 

 

 

Figure 1. Package Types of TD1482 

October,  20,  2010.                                                        Techcode  Semiconductor  Limited                                                  www.techcodesemi.com 

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T  echcode®

DATASHEET

 

 

 

1.6A 23V Synchronous Rectified Step-Down Converte TD1482

 

Absolute Maximum Ratings 

 

Parameter

Supply Voltage

Switch Node Voltage

Boost Voltage

Output Voltage

All Other Pins

Operating Junction Temperature

Storage Temperature

Lead Temperature (Soldering, 10 sec)

ESD (HBM)

MSL

Thermal Resistance-Junction to Ambient

Thermal Resistance-Junction to Case

 

  

Symbol

VIN

VSW

VBS

VOUT

TJ

TSTG

TLEAD

RθJA

RθJC

Value

-0.3 to 23

21

VSW – 0.3V to VSW+6V

0.923V to 20

–0.3V to +6V

150

-65 to 150

260

2000

Level3

90

45

Unit

V

V

V

V

V

ºC

ºC

ºC

V

ºC / W

ºC / W

October,  20,  2010.                                                        Techcode  Semiconductor  Limited                                                  www.techcodesemi.com 

4 

T  echcode®

DATASHEET

 

 

 

1.6A 23V Synchronous Rectified Step-Down Converte TD1482

 

 

Figure 6. Shutdown through Enable 

 

Figure 7. Heavy Load Operation 

 

Figure 8.Medium Load Operation 

 

 

 

  

  

  

Figure 9.Light Load Operation 

 

 

October,  20,  2010.                                                        Techcode  Semiconductor  Limited                                                  www.techcodesemi.com 

7 

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