Datasheet

LTC3880/LTC3880-1
116
3880fc
For more information www.linear.com/LTC3880
 LINEAR TECHNOLOGY CORPORATION 2011
LT 0514 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com/LTC3880
RELATED PARTS
TYPICAL APPLICATION
High Efficiency Dual 425kHz 2.5V/1.8V Step-Down Converter
V
IN
V
DD33
V
DD25
SGND
TG0
0.1µF
4.99k
0.1µF
1µF
1µF
L0, L1: VISHAY IHLP-4040DZ-11 1µH, 0.56µH
M1, M2: INFINEON BSC050N03LS
M3, M4: INFINEON BSC010NE2LS
1µF
2200pF
0.22µF
0.22µF
2200pF
22µF
V
IN
6V TO 24V
10µF
+
530µF
D2
M2
M4
20k
15k
V
DD25
M1
M3
V
OUT1
1.8V
20A
6.04k 4.99k
2.0k
1µF
L1
0.56µH
L0
1.0µH
D1
TG1
BG0
SYNC
10k
24.9k
11.3k
10k
1µF
1.58k
15.8k
16.2k
17.4k
GPIO0
10k
GPIO1
10k
SDA
10k
SCL
10k
ALERT
10k
RUN0
FREQ_CFG
V
OUT0_CFG
V
OUT1_CFG
V
TRIM0_CFG
V
TRIM1_CFG
ASEL
10k
RUN1
WP
10k
2.0k 1.58k
SHARE_CLK
V
DD33
BG1
PGND
BOOST0 BOOST1
SW0 SW1
INTV
CC
LTC3880
TSNS0 TSNS1
I
THO
I
TH1
I
SENSEO
+
I
SENSE1
+
V
SENSEO
+
V
SENSE1
V
SENSEO
–
I
SENSEO
–
I
SENSE1
–
V
OUT0
2.5V
20A
V
OUT1
1.8V
15A
+
530µF
3880 TA02
220pF 220pF10nF
10nF
PART NUMBER DESCRIPTION COMMENTS
LTC3883/LTC3883-1 Single Output PolyPhase Step-Down Controller with Input Current
Sense and Digital Power Sytem Management
V
IN
Up to 24V, 0.5V ≤ V
OUT
≤ 5.4V, Analog CM Control Loop,
I
2
C/PMBus Interface with EEPROM and 16-Bit ADC
LTC2977 Octal, PMBus Compliant Power-Supply Monitor, Supervisor,
Sequencer and Margin Controller
Fault Logging to Internal EEPROM Monitors Eight Output
Channels and One Input Voltage
LTC3850/LTC3850-2 Dual 2-Phase, Synchronous Step-Down DC/DC Controller, R
SENSE
or DCR Current Sensing and Tracking
PLL Fixed 250kHz to 780kHz Frequency, 4V ≤ V
IN
≤ 30V,
0.8V ≤ V
OUT
≤ 5.25V
LTC3855 Dual, Multiphase, Synchronous Step-Down DC/DC Controller with
Diff Amp and DCR Temperature Compensation
PLL Fixed Frequency 250kHz to 770kHz, 4.5V ≤ V
IN
≤ 38V,
0.8V ≤ V
OUT
≤ 12V
LTC3869 Dual 2-Phase, Synchronous Step-Down DC/DC Controller, with
Excellent Current Balance when Paralleled
PLL Fixed Frequency 250kHz to 770kHz, 4V ≤ V
IN
≤ 38V,
0.6V ≤ V
OUT
≤ 12.5V
LTC3861 Dual, Multiphase, Synchronous Step-Down DC/DC Controller with
Diff Amp and Three-State Output Drive
Operates with Power Blocks, DRMOS Devices or External
MOSFETs 3V ≤ V
IN
≤ 24V, t
ON(MIN)
= 20ns
LTC3833 Fast Accurate Synchronous Step-Down DC/DC Controller Controlled On-time, Synchronizable, 4.5V ≤ V
IN
≤ 38V,
0.6V ≤ V
OUT
≤ 5.25V
LTC3856 2-Phase, Single Output Synchronous Step-Down DC/DC Controller
with Diff Amp and DCR Temp Compensation
PLL Fixed 250kHz to 770kHz Frequency, 4.5V ≤ V
IN
≤ 38V,
0.6V ≤ V
OUT
≤ 5.25V
LTC3870 PolyPhase Step-Down Slave Controller for the LTC3880/LTC3883
with Digital Power System Management
LTC3880/LTC3883 Extender, 4.5V ≤ V
IN
≤ 60V, PLL 100kHz to
1MHz Frequency, 4mm × 5mm QFN-28
LTC3890 60V, Low I
Q
, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controller
PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ V
IN
≤ 60V,
0.8V ≤ V
OUT
≤ 24V, 5mm × 5mm QFN-32
LTM
®
4676 Dual 13A or Single 26A µModule
®
Power Supply with Digital
Power Sytem Management
4.5V ≤ V
IN
≤ 26V, 0.5V ≤ V
OUT
≤ 5.4V,
16mm × 16mm × 5.01mm BGA
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.