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부품번호 | TD1534 기능 |
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기능 | 2A 380KHz 20V PWM Buck DC/DC Converter | ||
제조업체 | Techcode | ||
로고 | |||
전체 16 페이지수
T echcode®
2A 380KHz 20V PWM Buck DC/DC Converter
DATASHEET
TD1534
General Description
Features
The TD1534 is a 380 KHz fixed frequency monolithic
step down switch mode regulator with a built in internal
Power MOSFET. It achieves 2A continuous output
current over a wide input supply range with excellent
load and line regulation.
The device includes a voltage reference, oscillation
circuit, error amplifier, internal PMOS and etc.
The PWM control circuit is able to adjust the duty ratio
linearly from 0 to 100%. An enable function, an over
current protection function and a short circuit protection
function are built inside. An internal compensation block
is built in to minimize external component count.
z 2A Constant Output Current
z 140mΩ RDSON Internal Power PMOSFET Switch
z Up to 95% Efficiency
z Fixed 380KHz Frequency
z Wide 1.0V to 20V Input Voltage Range
z Output Adjustable from 0.8V to 18V
z Built in Frequency Compensation
z Built in Thermal Shutdown Function
z Built in Current Limit Function
z SOP-8 Package is Available
z The minimum dropout up to 0.3V
The TD1534 serves as ideal power supply units for Applications
portable devices.
z Portable DVD
z LCD Monitor / TV
z Battery Charger
z ADSL Modem
z Telecom / Networking Equipment
Package Types
Figure 1. Package Types of TD1534
December, 20, 2005. Techcode Semiconductor Limited www.techcodesemi.com
1
T echcode®
2A 380KHz 20V PWM Buck DC/DC Converter
DATASHEET
TD1534
Absolute Maximum Ratings
Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device
at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
reliability.
Parameter
Symbol
Value
Unit
Input Voltage
Feedback Pin Voltage
Enable Pin Voltage
Switch Pin Voltage
VIN
-0.3 to 20
V
VFB
-0.3 to Vin
V
VEN
-0.3 to 12
V
VSW
-0.3 to Vin
V
Power Dissipation
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
ESD (HBM)
PD
TJ
TSTG
TLEAD
Internally limited
150
-65 to 150
260
2000
mW
ºC
ºC
ºC
V
MSL
Thermal Resistance-Junction to Ambient
Thermal Resistance-Junction to Case
RθJA
RθJC
Level3
85
45
ºC / W
ºC / W
Recommended Operating Conditions
Parameter
Input Voltage
Operating Junction Temperature
Operating Ambient Temperature
Symbol
VIN
TJ
TA
Min.
3.6
-40
-40
Max.
20
125
85
Unit
V
ºC
ºC
December, 20, 2005. Techcode Semiconductor Limited www.techcodesemi.com
4
4페이지 T echcode®
2A 380KHz 20V PWM Buck DC/DC Converter
Typical Application Circuit
DATASHEET
TD1534
Fig8. TD1534 Typical Application Circuit @ 0.8V/2A
Note:In PCB layout. Reserved an area for CFF.
Fig9. TD1534 Typical Application Circuit (with ceramic output capacitor) @ 0.8V/2A
Note:In PCB layout. Reserved an area for CFF.
December, 20, 2005. Techcode Semiconductor Limited www.techcodesemi.com
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