LTC3810-5
38
38105fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
l
FAX
: (408) 434-0507
l
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2007
LT 1210 REV D • PRINTED IN USA
PART NUMBER
DESCRIPTION
COMMENTS
LTC3891
60V, Low I
Q
, Synchronous Step-Down DC/DC
Controller
PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ V
IN
≤ 60V, 0.8V ≤ V
OUT
≤ 24V,
TSSOP-20E, 3mm
×
4mm QFN-20
LTC3890
60V, Low I
Q
, Dual Output 2-Phase Synchronous
Step-Down DC/DC Controller
PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ V
IN
≤ 60V, 0.8V ≤ V
OUT
≤ 24V,
5mm
×
5mm QFN-32
LTC3810
100V Synchronous Step-Down DC/DC Controller
Constant On-time Valley Current Mode, 4V ≤ V
IN
≤ 60V, 0.8V ≤ V
OUT
≤ 0.93V
IN
,
SSOP-28
LTC3812-5
60V Synchronous Step-Down DC/DC Controller
Constant On-time Valley Current Mode, 4V ≤ V
IN
≤ 60V, 0.8V ≤ V
OUT
≤ 0.93V
IN
,
TSSOP-16E
LTC3703
100V Synchronous Step-Down DC/DC Controller
PLL Fixed Frequency 100kHz to 600kHz, 4V ≤ V
IN
≤ 100V, 0.8V ≤ V
OUT
≤ 0.93V
IN
,
SSOP-16, SSOP-28
LT3845A
60V, Low I
Q
, Single Output Synchronous Step-Down
DC/DC Controller
Adjustable Fixed Frequency 100kHz to 500kHz, 4V≤ V
IN
≤ 60V, 1.23V ≤ V
OUT
≤
36V, TSSOP-16E
LTC3824
60V, Low I
Q
, Step-Down DC/DC Controller, 100%
Duty Cycle
Selectable Fixed Frequency 200kHz to 600kHz, 4V≤ V
IN
≤ 60V, 0.8V ≤ V
OUT
≤ V
IN
,
I
Q
= 40µA, MSOP-10E
13V to 60V Input Voltage to 12V/10A with Trickle Charger Start-Up
PGOOD
MODE_SYNC
PGOOD
V
ON
V
RNG
I
TH
SGND
UVIN
SHDN
V
FB
SGND
PGND
PGND
SS/TRACK
I
ON
PLL/LPF
C
ON
100pF
C
SS
1000pF
V
IN
13V TO 60V
V
OUT
12V
10A
C
C2
47pF
R
C
200k
R
FB2
1k
R
FB1
14k
LTC3810-5
EXTV
CC
TG
SW
SENSE
–
BG
BGRTN
SENSE
+
DRV
CC
INTV
CC
NDRV
BOOST
38105 TA05
C
B
0.1µF
C
DRVCC
0.1µF
C
VCC
1µF
R
UV2
13.3k
R
UV1
200k
R
ON
263k
R
NDRV
100k
DB
BAS19
M1
Si7850DP
M2
Si7850DP
×
2
C5
22µF
D1
B1100
C
OUT1
270µF
16V
C
OUT2
10µF
16V
L1
10µH
SHDN
31
2
3
4
5
6
7
8
9
33
12
13
27
26
25
24
20
19
18
17
16
15
14
C
C1
5pF
C
IN1
68µF
100V
C
IN2
1µF
100V
relaTeD parTs
Typical applicaTion