Datasheet

LT3690
30
3690fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2011
LT 0911 REV A • PRINTED IN USA
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LT3680 36V, 3.5A, 2.4MHz High Efficiency MicroPower Step-Down
DC/DC Converter
V
IN(MIN)
= 3.6V, V
IN(MAX)
= 36V, V
OUT(MIN)
= 0.8V, I
Q
= 75µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3972 Transients to 60V, 3.5A, 2.4MHz High Efficiency Step-Down
DC/DC Converter
V
IN(MIN)
= 3.6V, V
IN(MAX)
= 33V, V
OUT(MIN)
= 0.8V, I
Q
= 75µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3971 38V, 1.2A (I
OUT
), 2MHz, High Efficiency Step-Down DC/DC
Converter with Only 2.8µA of Quiescent Current
V
IN(MIN)
= 4.3V, V
IN(MAX)
= 38V, V
OUT(MIN)
= 1.19V, I
Q
= 2.8µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3991 55V, 1.2A (I
OUT
), 2MHz, High Efficiency Step-Down DC/DC
Converter with Only 2.8µA of Quiescent Current
V
IN(MIN)
= 4.3V, V
IN(MAX)
= 38V, V
OUT(MIN)
= 1.19V, I
Q
= 2.8µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3480 36V with Transient Protection to 60V, 2A (I
OUT
), 2.4MHz, High
Efficiency Step-Down DC/DC Converter with Burst Mode Operation
V
IN(MIN)
= 3.6V, V
IN(MAX)
= 38V, V
OUT(MIN)
= 0.78V, I
Q
= 70µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3685 36V with Transient Protection to 60V, 2A (I
OUT
), 2.4MHz,
High Efficiency Step-Down DC/DC Converter
V
IN(MIN)
= 3.6V, V
IN(MAX)
= 38V, V
OUT(MIN)
= 0.78V, I
Q
= 70µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3500 36V, 40V
MAX
, 2A, 2.5MHz High Efficiency Step-Down DC/DC
Converter and LDO Controller
V
IN(MIN)
= 3.6V, V
IN(MAX)
= 36V, V
OUT(MIN)
= 0.8V, I
Q
= 2.5mA,
I
SD
<10µA, 3mm × 3mm DFN-10 Package
LT3507 36V 2.5MHz, Triple (2.4A + 1.5A + 1.5A (I
OUT
)) with LDO Controller
High Efficiency Step-Down DC/DC Converter
V
IN(MIN)
= 4.0V, V
IN(MAX)
= 36V, V
OUT(MIN)
= 0.8V, I
Q
= 7mA,
I
SD
= 1µA, 5mm × 7mm QFN-38 Package
LT3682 36V, 60V
MAX
, 1A, 2.2MHz High Efficiency Micropower Step-Down
DC/DC Converter
V
IN(MIN)
= 3.6V, V
IN(MAX)
= 36V, V
OUT(MIN)
= 0.8V, I
Q
= 75µA,
I
SD
<1µA, 3mm × 3mm DFN-12 Package
3690 TA08
LT3690
GND
(FIXED FREQUENCY AT V
IN
< 31V)
680pF
V
IN
BIAS
UVLO
EN
SS
V
C
V
CCINT
SYNC
PG
BST
SW
FB
RT
10µF
V
IN
4.5V TO 36V
0.47µF
ƒ = 500kHz
22k
40.2k
100µF
V
OUT
3.3V
4A
1nF
102k
316k
L
3.3µH
0.68µF
ON OFF
3.3V Step-Down Converter