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TD6817 데이터시트 PDF




Techcode에서 제조한 전자 부품 TD6817은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 TD6817 기능
기능 1.5MHz 2A Synchronous Step-Down Regulator Dropout
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TD6817 데이터시트, 핀배열, 회로
Techcode®
1.5MHz 2A Synchronous Step-Down Regulator Dropout
DATASHEET
TD6817
General Description
Features
The TD6817 is a high efficiency monolithic synchronous
buck regulator using a constant frequency, current mode
architecture. The device is available in an adjustable
version and fixed output voltages of 1.5V and 1.8V.
Supply current during operation is only 20mA and drops
to 1mA in shutdown. The 2.5V to 5.5V input voltage
range makes the TD6817 ideally suited for single Li-Ion
battery-powered applications. 100% duty cycle provides
low dropout operation, extending battery life in portable
systems.Automatic Burst Mode operation increases
efficiency at light loads, further extending battery life.
Switching frequency is internally set at 1.5MHz, allowing
the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode. Low
output voltages are easily supported with the 0.6V
feedback reference voltage. The TD6817 is available in
TSOT23-5 package.
High Efficiency: Up to 96%
High Efficiency at light loads
Very Low Quiescent Current: Only 20uA During
Operation
2A Output Current
2.5V to 5.5V Input Voltage Range
1.5MHz Constant Frequency Operation
No Schottky Diode Required
Low Dropout Operation: 100% Duty Cycle
0.6V Reference Allows Low Output Voltages
Shutdown Mode Draws 1uA Supply Current
Current Mode Operation for Excellent Line and Load
Transient Response
Overtemperature Protected
TSOT23-5 Package is Available
Applications
Cellular Telephones
Personal Information Appliances
Wireless and DSL Modems
Digital Still Cameras
MP3 Players
Portable Instruments
Package Types
December, 20, 2009
TSOT23-5
Figure 1. Package Types of TD6817
America Techcode Semiconductor, Inc.
1
www.techcodesemi.c
om




TD6817 pdf, 반도체, 판매, 대치품
Techcode®
1.5MHz 2A Synchronous Step-Down Regulator Dropout
Absolute Maximum Ratings
DATASHEET
TD6817
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
Input Supply Voltage
RUN, VFB Voltages
SW Voltage
P-Channel Switch Source Current (DC)
N-Channel Switch Sink Current (DC)
Peak SW Sink and Source Current
Operating Temperature Range
Junction Temperature
Lead Temperature (Soldering, 10 sec)
Storage Temperature Range
Value
-0.3 ~6
-0.3 ~ VIN
-0.3V ~(VIN+0.3)
2250
2250
2.5
-40~+85
125
300
-65~150
Unit
V
V
V
mA
mA
A
ºC
ºC
ºC
ºC
Electrical Characteristics
Unless otherwise specified, VIN= 3.6V TA=25 ºC.
Symbol
IVFB
VFB
VOUT
Parameter
Conditions
Min.
Feedback Current
Regulated Feedback
Voltage
TA = 25C
0C TA 85C
40C TA 85C
0.5880
0.5865
0.5850
Reference Voltage Line
VIN = 2.5V to 5.5V
Regulation
Regulated Output
Voltage
TD6817-1.5, IOUT = 150mA 1.455
TD6817-1.8, IOUT = 150mA 1.746
Output Voltage Line
Regulation
VIN = 2.5V to 5.5V
Typ.
0.6000
0.6000
0.6000
0.04
1.500
1.800
0.04
Max.
0.6120
0.6135
0.6150
0.4
1.545
1.854
0.4
Unit
nA
V
%/ V
V
%/ V
December, 20, 2009
America Techcode Semiconductor, Inc.
4
www.techcodesemi.c
om

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TD6817 전자부품, 판매, 대치품
Techcode®
1.5MHz 2A Synchronous Step-Down Regulator Dropout
Typical Operating Characteristics(Cont.)
DATASHEET
TD6817
RDS(ON) vs Input Voltage
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
December, 20, 2009
America Techcode Semiconductor, Inc.
7
www.techcodesemi.c
om

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