LT3669E View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT3669E' PDF : 40 Pages View PDF
LT3669/LT3669-2
BLOCK DIAGRAM LT3669-2
–
BASE
+
CTRL
ENABLE EN
0.794V
VLDO
CLDO
LDO
19
R3
20 FBLDO
R4
LOW DROPOUT LINEAR REGULATOR
3V
EN
SOFT START
CPOR
CPOR
27
RST
28
POWER-ON
RESET
CONTROL
RST
FBLDO
FBOUT
0.736V
–
+
SLOPE COMP
OSCILLATOR
250kHz TO 2.2MHz
RQ
S QB
SWITCH
DRIVER
EN
SYNC
DISABLE
LDOIN 18
BOOST
DIODE
BD
17
BST
16
SW
15
DA
14
VOUT
COUT
CBST
L
D1
VC
VC CLAMP
SYNC
24
RT
22
0.794V
SOFT-START
EN
RT
R1
FBOUT 21
3V
REFERENCE
R2
0.794V
GENERATOR
EN/UVLO
0.736V
TEMPERATURE
12
EN
AND VOLTAGE
THSD
MONITORING
DIO
13
WAKE
3
1 SC1
5 TXEN1
6 TXD1
RXD1
4
RX
SC2
2
TXEN2
7
TXD2
8
25 SR
26 ILIM
EN
THSD
ENABLE
THSD
RST
WAKE-UP
DETECT
WAKE
SC
Q
DRIVER 1
CONTROL
SLEW RATE
CONTROL
EN
THSD
ENABLE
THSD
SC
Q
DRIVER 2
CONTROL
SLEW RATE
CONTROL
For more information www.linear.com/LT3669
L+
11
CL+
CQ1
10
C1
L+
1
2
4 C/Q
Q2
3
L–
Q2
9
C2
GND 29
AGND 23
36692 BD2
3669fa
15
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