LTC3830 LINER [Linear Technology], LTC3830 Datasheet - Page 24

• Manufacturer Part Number: LTC3830
• Description: High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO
LTC3830/LTC3830-1
RELATED PARTS
PART NUMBER
LTC1430/LTC1430A High Power Step-Down Switching Regulator Controllers
LTC1530
LTC1628
LTC1702
LTC1705
LTC1709
LTC1736
LTC1773
LTC1778
LTC1873
LTC1876
LTC1929
LTC3713
LTC3831
LTC3832
No R
24
SENSE
is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
DESCRIPTION
High Power Synchronous Switching Regulator Controller
Dual High Efficiency 2-Phase Synchronous Step-Down Controller
Dual High Efficiency 2-Phase Synchronous Step-Down Controller
Dual 550kHz Synchronous 2-Phase Switching Regulator
Controller with 5-Bit VID Plus LDO
2-Phase, 5-Bit Desktop VID Synchronous Step-Down Controller
Synchronous Step-Down Controller with 5-Bit Mobile VID Control
Synchronous Step-Down Controller in MS10
Wide Operating Range/Step-Down Controller, No R
Dual Synchronous Switching Regulator with 5-Bit Desktop VID
2-Phase, Dual Step-Down Synchronous Controller with
Integrated Step-Up DC/DC Regulator
2-Phase, Synchronous High Efficiency Converter
with Mobile VID
Low Input Voltage, High Power, No R
Synchronous Controller
High Power Synchronous Switching Regulator Controller for
DDR Memory Termination
Synchronous Step-Down Controller
130k
4.7 F
100
C1
33pF
0.1 F
U
10 F
SHDN
R
18k
C
C
1500pF
0.01 F
C
www.linear.com
Typical 3.3V to 2.5V, 14A Application
V
SS
FREQSET
SHDN
COMP
PV
CC
CC2
SENSE
LTC3830
SENSE
NC
SENSE
PV
, Step-Down
–
12V
PGND
I
CC1
GND
MAX
G1
I
G2
FB
FB
+
SENSE
6.8k
NC
1k
0.1 F
C
C
D1: MBRS330T3
L
Q1, Q2: VISHAY Si7892DP
O
IN
OUT
Q2
: SUMIDA CDEP105-1R3
COMMENTS
LTC3830 is Pin-for-Pin Compatible and is Recommended for
New Designs
SO-8 with Current Limit. No R
Constant Frequency, Standby 5V and 3.3V LDOs,
3.5V V
550kHz, 25MHz GBW Voltage Mode, V
Provides CPU Core, I/O and CLK Supplies for Portable Systems
Current Mode, V
Fault Protection, Power Good, 3.5V to 36V Input, Current Mode
Up to 95% Efficiency, 550kHz, 2.65V V
0.8V V
V
1.3V to 3.5V Programmable Core Output Plus I/O Output
Step-Down DC/DC Conversion from 3V
C
Current Mode Ensures Accurate Current Sensing V
I
Minimum V
MOSFETs
V
0.6V V
: SANYO POSCAP 6TPB330M
OUT
IN
OUT
OUT
: SANYO POSCAP 4TPB470M
Up to 36V, Current Mode, Power Good
, Uses Logic-Level N-Channel MOSFETs
Up to 40A
Tracks 1/2 of V
Q1
D1
IN
OUT
OUT
1.3 H
IN
L
O
36V
: 1.5V, Uses Standard Logic-Level N-Channel
V
5V, Pin-for-Pin Compatible with the LTC3830
IN
IN
+
+
, Synchronizable to 750kHz
to 36V, I
IN
C
330 F
C
470 F
or External Reference
IN
OUT
2
3
OUT
LINEAR TECHNOLOGY CORPORATION 2001
16.5k
1%
16.9k
1%
3830 TA01
SENSE
Up to 42A
3.3V
2.5V
14A
TM
LT/TP 0103 2K • PRINTED IN USA
required
IN
IN
IN
, Minimum C
7V, No R
8.5V,
IN
SENSE
sn3830 3830fs
Up to 36V,
IN
and