24
LTC3830/LTC3830-1
3830fa
© LINEAR TECHNOLOGY CORPORATION 2001
LT/LT 0305 • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC1530 High Power Synchronous Switching Regulator Controller SO-8 with Current Limit. No R
SENSE
TM
Required
LTC1628/LTC3728 Dual High Efficiency 2-Phase Synchronous Step-Down Controller Constant Frequency, Standby 5V and 3.3V LDOs,
3.5V ≤ V
IN
≤ 36V
LTC1702 Dual High Efficiency 2-Phase Synchronous Step-Down Controller 550kHz, 25MHz GBW Voltage Mode, V
IN
≤ 7V, No R
SENSE
LTC1709 2-Phase, 5-Bit Desktop VID Synchronous Step-Down Controller Current Mode, V
IN
to 36V, I
OUT
Up to 42A
LTC1736 Synchronous Step-Down Controller with 5-Bit Mobile VID Control Fault Protection, Power Good, 3.5V to 36V Input, Current Mode
LTC1773 Synchronous Step-Down Controller in MS10 Up to 95% Efficiency, 550kHz, 2.65V ≤ V
IN
≤ 8.5V,
0.8V ≤ V
OUT
≤ V
IN
, Synchronizable to 750kHz
LTC1778 Wide Operating Range/Step-Down Controller, No R
SENSE
V
IN
Up to 36V, Current Mode, Power Good
LTC1873 Dual Synchronous Switching Regulator with 5-Bit Desktop VID 1.3V to 3.5V Programmable Core Output Plus I/O Output
LTC1876 2-Phase, Dual Step-Down Synchronous Controller with Step-Down DC/DC Conversion from 3V
IN
, Minimum C
IN
and
Integrated Step-Up DC/DC Regulator C
OUT
, Uses Logic-Level N-Channel MOSFETs
LTC1929/LTC3729 2-Phase, Synchronous High Efficiency Converter Current Mode Ensures Accurate Current Sensing V
IN
Up to 36V,
with Mobile VID I
OUT
Up to 40A
LTC3713 Low Input Voltage, High Power, No R
SENSE
, Step-Down Minimum V
IN
: 1.5V, Uses Standard Logic-Level N-Channel
Synchronous Controller MOSFETs
LTC3770 Fast DC/DC Step-Down Synchronous Controller with Margining, 4V ≤ V
IN
≤ 32V, 0.6V ≤ V
OUT
≤ 28V, Powerful Gate Drivers
Tracking and PLL
LTC3831 High Power Synchronous Switching Regulator Controller for V
OUT
Tracks 1/2 of V
IN
or External Reference
DDR Memory Termination
LTC3832 Synchronous Step-Down Controller 0.6V ≤ V
OUT
≤ 5V, Pin-for-Pin Compatible with the LTC3830
No R
SENSE
is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
U
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
Typical 3.3V to 2.5V, 14A Application
G1
I
MAX
I
FB
G2
PGND
GND
SENSE
+
FB
V
CC
SS
FREQSET
SHDN
COMP
PV
CC2
12V
6.8k
1k
0.1µF
L
O
1.3µH
Q2
NC
C
IN
: SANYO POSCAP 6TPB330M
C
OUT
: SANYO POSCAP 4TPB470M
D1: MBRS330T3
L
O
: SUMIDA CDEP105-1R3
Q1, Q2: VISHAY Si7892DP
D1
C
OUT
470µF
×3
2.5V
14A
3.3V
16.5k
1%
16.9k
1%
3830 TA01
Q1
LTC3830
10µF
SHDN
4.7µF
PV
CC1
SENSE
–
NC
+
C
IN
330µF
× 2
+
0.1µF
C1
33pF
0.01µF
100Ω
C
C
1500pF
130k
R
C
18k
