Datasheet

LTC3883/LTC3883-1
112
3883fa
For more information www.linear.com/LTC3883
LINEAR TECHNOLOGY CORPORATION 2012
LT 1113 REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com/LTC3883
RELATED PARTS
TYPICAL APPLICATION
High Efficiency 500kHz 1.8V Step-Down Converter with DCR Sense
GND
0.1µF
1µF
10nF10nF
10µF
V
IN
6V TO 24V
1µF
5mΩ
10k
100Ω
2200pF
4.99k
22µF
50V
+
D1
M1
M2
20k
12.7k
24.9k
9.09k
10k
23.2k
20k
17.8k
1.4k
V
DD25
1.4k
V
OUT
1.8V
20A
C
OUT
530µF
0.22µF
3883 TA02
100pF
D1: CENTRAL CMDSH-3TR
L: VISHAY IHLP-4040DZ-11 0.56µH
M1: INFINEON BSC050N03LSG
M2: INFINEON BSC011N03LSI
1.0µF
1.0µF
0.56µH
TG
BG
PGND
FREQ_CFG
I
IN_SNS
BOOST
V
IN_SNS
V
IN
PGOOD
SW
INTV
CC
LTC3883
100Ω
10k
GPIO
10k
10k
SDA
10k
PMBus
INTERFACE
V
DD33
SCL
V
OUT_CFG
V
TRIM_CFG
ASEL
I
SENSE
+
I
SENSE
–
V
SENSE
+
V
SENSE
–
V
DD25
V
DD33
TSNS
I
TH
10k
ALERT
10k
RUN
5k
SHARE_CLK
WP
SYNC
MMBT3906
10µF
1µF
C
OUT
: 330μH SANYO 4TPF330ML,
2× 100µF AVX 12106D107KAT2A
3Ω
PART NUMBER DESCRIPTION COMMENTS
LTC3880/LTC3880-1 Dual Output Multiphase Step-Down Controller with
Digital Power System Management
V
IN
Up to 24V, 0.5V ≤ V
OUT
≤ 5.5V, Analog Control Loop, I
2
C/PMBus,
Interface with EEPROM and 16-Bit ADC
LTC3866 Sub Milli-Ohm Current Mode Synchronous Step-Down
Controller with Remote Sense
PLL Fixed Frequency 250kHz to 750kHz, 4V ≤ V
IN
≤ 38V,
0.6V ≤ V
OUT
≤ 5V, 4mm × 4mm QFN-24, TSSOP-24E
LTC3867 Synchronous Step-Down Controller with Differential
Remote Sense and Nonlinear Control
PLL Fixed Operating Frequency 250kHz to 750kHz, 4V ≤ V
IN
≤ 38V,
0.6V ≤ V
OUT
≤ 14V, 4mm × 4mm QFN-24
LTC3833 Fast Accurate Step-Down Controller with Differential
Output Sensing and up to 2MHz Frequency
Very Fast Transient Response, t
ON(MIN)
= 20ns, 4.5V ≤ V
IN
≤ 38V,
0.6V ≤ V
OUT
≤ 5.5V, TSSOP-20E, 3mm × 4mm QFN-20
LTC3878/LTC3879 No R
SENSE
™ Constant On-Time Synchronous
Step-Down Controller
Ver
y Fast Transient Response, t
ON(MIN)
= 43ns, 4V ≤ V
IN
≤ 38V,
0.8V ≤ V
OUT
≤ 0.9V
IN
, SSOP-16, MSOP-16E, 3mm × 3mm QFN-16
LTC3775 High Frequency Synchronous Voltage Mode
Step-Down Controller
Fast T
ransient Response, t
ON(MIN)
= 30ns, 4V ≤ V
IN
≤ 38V,
0.6V ≤ V
OUT
≤ 0.8V
IN
, MSOP-16E, 3mm × 3mm QFN-16
LTC3861 Dual, Multiphase, Synchronous Step-Down Controller
with Diff Amp and Three-State Output Drive
Operates with Power Blocks, DR MOS Devices or External MOSFETs,
3V ≤ V
IN
≤ 24V, Up to 2.25MHz Operating Frequency
LTC2978 Octal, PMBus Compliant Power Supply Monitor
Supervisor, Sequencer and Margin Controller
Fault Logging to Internal EPROM, Monitors Eight Output Voltage Channels
and One Input Voltage
This product has a license from PowerOne, Inc. related to digital power technology as set forth in U.S. Patent 7000125 and other related patents owned by PowerOne, Inc.
This license does not extend to standalone power supply products.