LT3685 LINER [Linear Technology], LT3685 Datasheet - Page 28

• Manufacturer Part Number: LT3685
• Description: 36V, 4A, 1.5MHz Synchronous Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

LT3690
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LT3680
LT3972
LT3971
LT3991
LT3480
LT3685
LT3500
LT3507
LT3682
28
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
36V, 3.5A, 2.4MHz High Efficiency MicroPower Step-Down
DC/DC Converter
Transients to 60V, 3.5A, 2.4MHz High Efficiency Step-Down
DC/DC Converter
38V, 1.2A (I
Converter with Only 2.8µA of Quiescent Current
55V, 1.2A (I
Converter with Only 2.8µA of Quiescent Current
36V with Transient Protection to 60V, 2A (I
Efficiency Step-Down DC/DC Converter with Burst Mode Operation
36V with Transient Protection to 60V, 2A (I
High Efficiency Step-Down DC/DC Converter
36V, 40V
Converter and LDO Controller
36V 2.5MHz, Triple (2.4A + 1.5A + 1.5A (I
High Efficiency Step-Down DC/DC Converter
36V, 60V
DC/DC Converter
●
MAX
MAX
FAX: [phone]
OUT
OUT
, 2A, 2.5MHz High Efficiency Step-Down DC/DC
, 1A, 2.2MHz High Efficiency Micropower Step-Down
), 2MHz, High Efficiency Step-Down DC/DC
), 2MHz, High Efficiency Step-Down DC/DC
4.5V TO 36V
1nF
V
IN
22k
680pF
●
www.linear.com
10µF
ON OFF
0.47µF
OUT
OUT
OUT
3.3V Step-Down Converter
(FIXED FREQUENCY AT V
ƒ = 500kHz
)) with LDO Controller
UVLO
EN
SS
V
V
SYNC
), 2.4MHz, High
), 2.4MHz,
C
CCINT
V
IN
LT3690
GND
BIAS
IN
< 31V)
BST
SW
PG
FB
RT
COMMENTS
V
I
V
I
V
I
V
I
V
I
V
I
V
I
V
I
V
I
SD
SD
SD
SD
SD
SD
SD
SD
SD
IN(MIN)
IN(MIN)
IN(MIN)
IN(MIN)
IN(MIN)
IN(MIN)
IN(MIN)
IN(MIN)
IN(MIN)
0.68µF
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
<10µA, 3mm × 3mm DFN-10 Package
= 1µA, 5mm × 7mm QFN-38 Package
<1µA, 3mm × 3mm DFN-12 Package
40.2k
= 3.6V, V
= 3.6V, V
= 4.3V, V
= 4.3V, V
= 3.6V, V
= 3.6V, V
= 3.6V, V
= 4.0V, V
= 3.6V, V
3.3µH
102k
L
316k
3690 TA08
IN(MAX)
IN(MAX)
IN(MAX)
IN(MAX)
IN(MAX)
IN(MAX)
IN(MAX)
IN(MAX)
IN(MAX)
100µF
V
3.3V
4A
OUT
= 36V, V
= 33V, V
= 38V, V
= 38V, V
= 38V, V
= 36V, V
= 36V, V
= 36V, V
= 38V, V
 LINEAR TECHNOLOGY CORPORATION 2011
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
= 0.8V, I
= 0.8V, I
= 1.19V, I
= 0.78V, I
= 0.78V, I
= 0.8V, I
= 0.8V, I
= 0.8V, I
= 1.19V, I
LT 0211 • PRINTED IN USA
Q
Q
Q
Q
Q
Q
Q
= 75µA,
= 75µA,
Q
Q
= 2.5mA,
= 7mA,
= 75µA,
= 2.8µA,
= 70µA,
= 2.8µA,
= 70µA,
3690f