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TD8203 PDF 데이터시트 ( Data , Function )

부품번호 TD8203 기능
기능 White LED Step-up Converter
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TD8203 데이터시트, 핀배열, 회로
Techcode®
White LED Step-up Converter
DATASHEET
TD8203
General Description
Features
The TD8203 is a current-mode and fixed frequency boost
converter with an integrated N-FET to drive white LEDs.
The series connection allows the LED current to be
identical for uniform brightness. Its low on-resistance of
NFET and low feedback voltage reduce power loss and
achieve high efficiency. Fast switching frequency(1.5MHz
typical) allows using small-size inductor and both of input
and output capacitors. An over voltage protection
function,which monitors the output voltage via OVP pin,
stops switching of the IC if the OVP voltage exceeds the
over voltage threshold. An internal soft-start circuit
eliminates the inrush current during start-up.
The TD8203 also integrates under-voltage lockout,
overtemperature protection, and current limit circuits to
protect the IC in abnormal conditions. The TD8203 is
available in a SOT-23-6A
Wide Input Voltage from 2.7V to 6V
Fixed 1.5MHz Switching Frequency
Reference Voltage : 0.2V
PWM Brightness Control with Wide Frequency
Range of 100Hz to 100kHz
Build-In Power MOSFET : 0.2Ω
Open-LED Protection
Under-Voltage Lockout Protection
Over-Temperature Protection
<1mA Quiescent Current during Shutdown
SOT-23-6A
Halogen and Lead Free Available
RoHS Compliant
Applications
White LED Display Backlighting
Cell Phone and Smart Phone
PDA, PMP, MP3
Digital Camera
December, 20, 2011
Techcode Semiconductor Limited
1
www.techcodesemi.com




TD8203 pdf, 반도체, 판매, 대치품
Techcode®
White LED Step-up Converter
Absolute Maximum Ratings
Symbol
Parameter
VIN
VLX
VOVP
PD
TJ
TSTG
TSDR
VIN Supply Voltage (VIN to GND)
FB, EN to GND
LX to GND Voltage
OVP to GND
Power Dissipation
Maximum Junction Temperature
Storage Temperature
Maximum Lead Soldering Temperature, 10 Seconds
Recommended Operating Conditions
Symbol
Parameter
θ JA
Junction-to-Ambient Resistance in Free Air
θ JC
VIN
Junction-to-Case Resistance
VIN Supply Voltage(VIN to GND)
VOVP
VOUT to GND
CIN Input Capacitor
COUT
Output Capacitor
L1 Converter Output Inductor
TA Ambient Temperature
TJ Junction Temperature
DATASHEET
TD8203
Rating
-0.3 ~ 7
-0.3 ~ VIN
-0.3 ~ 27.5
-0.3 ~ 27.5
Internally Limit
150
-65 ~ 150
260
Unit
V
V
V
V
vW
Typical Value
220
120
2.7-6
VIN-22
4.7~
4.7~
2.2-10
-40~85
-40~125
Unit
oC/W
oC/W
V
V
uF
uF
uH
oC
oC
December, 20, 2011
Techcode Semiconductor Limited
4
www.techcodesemi.com

4페이지










TD8203 전자부품, 판매, 대치품
Techcode®
White LED Step-up Converter
Typical Operating Characteristics(Cont.)
DATASHEET
TD8203
Operating Waveforms
December, 20, 2011
Techcode Semiconductor Limited
7
www.techcodesemi.com

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