LT3669EUFD-2 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3669EUFD-2 Datasheet PDF : 40 Pages
| |||
LT3669/LT3669-2
TYPICAL APPLICATIONS
3.3V Buck, 3.3V LDO, COM2, 100mA Line Drivers
VOUT OR VLDO
L1
82µH
CBST
0.1µF
RESET
I/O
I/O
µC I/O
I/O
I/O
I/O
I/O
I/O
100k 100k 100k 10k 10k
fSW = 400kHz
tRST = 12.5ms
L1: CDRH4D22HPNP-820MC
LT3669
BD
FBOUT
CPOR
0.1µF
SW
CPOR
RT, 63.4k
BST
RT
SYNC
ILIM
SR
RST
SC1
SC2
WAKE
RXD1
LDO
FBLDO
AGND
LDOIN
DIO
TXEN1 EN/UVLO
TXD1
L+
TXEN2
Q2
TXD2
CQ1
GND
R3, 14k
R4
4.42k
C1
470pF
C2
470pF
R1, 32.4k
R2
10.2k
VOUT
3.3V, 100mA
COUT
22µF
CLDO
1µF
VLDO
3.3V
20mA, VL+ ≤ 30V
15mA, VL+ ≤ 40V
VL+, 7.5V TO 40V
TRANSIENT TO 60V
100mA
100mA
CL+
2
4.7µF
1
4
3
36692 TA04
5V Buck, 3.3V LDO, COM2, 500mA Line Driver (Non IO-Link)
L1
33µH
VOUT OR VLDO
RESET
I/O
µC I/O
I/O
I/O
I/O
I/O
100k 100k 100k
fSW = 600kHz
tRST = 12.5ms
L1: CDRH50D28RNP-330MC
CBST
0.22µF
LT3669-2
BST
BD
SW
FBOUT
D1
CPOR
0.1µF
10k 10k
DA
SYNC
SR
RST
SC1
SC2
WAKE
RXD1
TXEN1
CPOR
RT
ILIM
LDOIN
LDO
FBLDO
AGND
DIO
EN/UVLO
RT, 38.3k
RILIM, 42.2k
VOUT
R3, 14k
R4
4.42k
TXD1
L+
TXEN2
Q2
TXD2
CQ1
GND
C1
470pF
500mA
CL+
10µF
R1, 53.6k
R2
10.2k
VOUT, IOUT*
5V, 300mA
COUT
22µF
CLDO
1µF
VLDO, ILDO*
3.3V, 150mA
VL+, 7.5V TO 40V
TRANSIENT TO 60V
1
2
4
3
* IOUT(MAX) IS 300mA AND ILDO(MAX) IS 150mA
(REMAINING AVAILABLE IOUT IS 300mA – ILDO)
36692 TA05
For more information www.linear.com/LT3669
3669fa
37
Share Link: 