TD1482 반도체 회로 부품 판매점
1.6A 23V Synchronous Rectified Step-Down Converte
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 Techcode |
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
Pin Configurations
Pin Description
Figure 2 Pin Configuration of TD1482(Top View)
Pin Number Pin Name Description
1 BS
High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel
MOSFET switch. Connect a 0.01µF or greater capacitor from SW to BS to power the
high side switch.
2 IN
Power Input. IN supplies the power to the IC, as well as the step-down converter
switches. Drive IN with a 4.75V to 23V power source. Bypass IN to GND with a
suitably large capacitor to eliminate noise on the input to the IC. See Input Capacitor.
3 SW
Power Switching Output. SW is the switching node that supplies power to the output.
Connect the output LC filter from SW to the output load. Note that a capacitor is
required from SW to BS to power the high-side switch.
4 GND Ground.
5 FB
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB
with a resistive voltage divider from the output voltage. The feedback threshold
is 0.923V. See Setting the Output Voltage.
Compensation Node. COMP is used to compensate the regulation control loop.
6
COMP
Connect a series RC network from COMP to GND to compensate the regulation
control loop. In some cases, an additional capacitor from COMP to GND is
required. See Compensation Components.
7 EN
Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to
turn on the regulator, drive it low to turn it off. Pull up with 100kΩ resistor for
automatic startup.
8 SS
Soft-Start Control Input. SS controls the soft start period. Connect a capacitor from SS
to GND to set the soft-start period. A 0.1µF capacitor sets the soft-start period to 15ms.
To disable the soft-start feature, leave SS unconnected.
October, 20, 2010. Techcode Semiconductor Limited www.techcodesemi.com
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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