LT3669 반도체 회로 부품 판매점
IO-Link Transceiver
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 Linear Technology Corporation |
Features
n IO-Link® PHY Compatible (COM1/COM2/COM3)
n Cable Interface Protected to ±60V
n Operation from 7.5V to 40V
n Integrated Step-Down Switching Regulator
n Max Load Current: 100mA (LT3669)/
300mA (LT3669-2)
n Synchronizable and Adjustable Switching
Frequency: 250kHz to 2.2MHz
n Output Voltage: 0.8V to 16V
n Integrated 150mA LDO Linear Regulator
n Rugged Line Drivers with Adjustable Slew Rate and
Current Limit
n Adaptive Line Driver Pulsing Scheme to Switch
Heavy Loads Safely
n Drivers Configurable as Push-Pull, Pull-Up or
Pull-Down
n Adjustable Power-On Reset Timer
n Small 28-Pin Thermally Enhanced 4mm × 5mm
QFN Package
Applications
n Industrial Sensors and Actuators
LT3669/LT3669-2
IO-Link Transceiver with
Integrated Step-Down
Regulator and LDO
Description
The LT®3669 is an industrial transceiver that includes a
step-down switching regulator and a low dropout linear
regulator. Wake-up detect functionality, as well as a pro-
grammable power-on reset timer are also included. The
current limit and slew rate of the transmitters are externally
adjustable for optimum EMC performance.
The line drivers can source/sink up to 250mA of current
each or 500mA when connected together, with a minimal
residual voltage of less than 2.1V. An internal adaptive
pulsing scheme allows the drivers to safely switch heavy
capacitive loads and incandescent bulbs. Thermal shut-
down provides additional protection. Line protection of
±60V in the line interface pins allows the use of standard
TVS diodes with L+ operating voltages up to 40V.
The switching regulator integrates the catch diode in
LT3669 (up to 100mA load current) and requires an exter-
nal catch diode in LT3669-2 (up to 300mA load current).
The LT3669 implements an IO-Link device PHY. For IO-Link
master designs, see the LTC2874.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap
is a trademark of Linear Technology Corporation. IO-Link is a registered trademark of PROFIBUS
User Organization (PNO). All other trademarks are the property of their respective owners.
Typical Application
82µH
0.1µF
RESET
I/O
I/O
µC
I/O
I/O
I/O
I/O
I/O
I/O
LT3669
BD FBOUT
LDOIN
SW CPOR
BST
SYNC
SR
RT
ILIM
RST LDO
SC1 FBLDO
SC2 AGND
WAKE
RXD1
DIO
TXEN1 EN/UVLO
TXD1
L+
TXEN2
Q2
TXD2 GND CQ1
53.6k
0.1µF 10.2k
5V
100mA
10µF
38.3k
tRST = 12.5ms
fSW = 600kHz
42.2k
14k
4.42k
3.3V
100mA
1µF
470pF
470pF
VL+, 7.5V TO 40V
TRANSIENT TO 60V
250mA
250mA
4.7µF
2
1
4
3
36692 TA01a
Operating Waveforms
TXD1
5V/DIV
RXD1
5V/DIV
CQ1
5V/DIV
10µs/DIV
(RXD1 PULL-UP RESISTOR = 10k)
0V
0V
0V
36692 TA01b
For more information www.linear.com/LT3669
3669f
1
LT3669/LT3669-2
Absolute Maximum Ratings (Notes 1 and 2)
L+, EN/UVLO Voltage (Note 3)..................... –60V to 60V
CQ1, Q2 Voltage........................................... –60V to 60V
(L+ to CQ1), (L+ to Q2) Voltage.................... –60V to 60V
DIO, LDOIN Voltage (Note 3)....................... –0.3V to 60V
DIO Above L+ Voltage................................................90V
BST Voltage...............................................................50V
BST Above SW Voltage..............................................30V
BD Voltage.................................................................30V
LDO Voltage.................................................................8V
LDO Above LDOIN Voltage........................................0.3V
FBOUT, FBLDO, SYNC Voltage........................................6V
CPOR, RT, ILIM Voltage...............................................3V
SR, TXEN1, TXD1, TXEN2, TXD2 Voltage..................30V
SC1, SC2, WAKE, RST, RXD1 Voltage........................30V
Operating Junction Temperature
Range (Notes 4 and 5)
LT3669E............................................. –40°C to 125°C
LT3669I.............................................. –40°C to 125°C
LT3669H............................................. –40°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
LT3669
TOP VIEW
28 27 26 25 24 23
SC1 1
22 RT
SC2 2
WAKE 3
RXD1 4
TXEN1 5
TXD1 6
21 FBOUT
29
GND
20 FBLDO
19 LDO
18 LDOIN
17 BD
TXEN2 7
16 BST
TXD2 8
15 SW
9 10 11 12 13 14
LT3669-2
TOP VIEW
28 27 26 25 24 23
SC1 1
22 RT
SC2 2
WAKE 3
RXD1 4
TXEN1 5
TXD1 6
21 FBOUT
29
GND
20 FBLDO
19 LDO
18 LDOIN
17 BD
TXEN2 7
16 BST
TXD2 8
15 SW
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
θJA = 44°C/W, θJC = 8°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
θJA = 44°C/W, θJC = 8°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
3669f
2 For more information www.linear.com/LT3669
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제조업체: Linear Technology Corporation
( linear )
LT3669 transceiver
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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