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参数资料
型号： LTC3880EUJ-1#TRPBF
厂商： LINEAR TECHNOLOGY CORP
元件分类： 稳压器
英文描述： 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
封装： 6 X 6 MM, LEAD FREE, PLASTIC, WJJD-2, QFN-40
文件页数： 1/112页
文件大小： 2182K
代理商： LTC3880EUJ-1#TRPBF
LTC3880/LTC3880-1
1
3880fa
n
PMBus/I2C Compliant Serial Interface
– Telemetry Read Back includes VIN, IIN, VOUT, IOUT,
Temperature and Faults
– Programmable Voltage, Current Limit, Digital
Soft-Start/Stop, Sequencing, Margining, OV/UV
and Frequency Synchronization (250kHz to 1MHz)
n
±0.5% Output Voltage Accuracy over Temperature
n
Integrated 16-Bit ADC
n
Internal EEPROM and Fault Logging
n
Integrated Powerful N-Channel MOSFET Gate Drivers
Power Conversion
n
Wide VIN Range: 4.5V to 24V
n
VOUT Range: 0.5V to 5.5V
n
Analog Current Mode Control Loop
n
Supports Power-Up Into Pre-Biased Load
n
Accurate PolyPhase Current Sharing for Up to 6 Phases
n
Available in a 40-Pin (6mm
× 6mm) QFN Package
TYPICAL APPLICATION
DESCRIPTION
Dual Output PolyPhase
Step-Down DC/DC Controller with
Digital Power System Management
The LTC3880/LTC3880-1 are dual, PolyPhase DC/DC
synchronous step-down switching regulator controllers
with an I2C-based PMBus compliant serial interface.
The controllers use a constant frequency, current mode
architecture that is supported by LTpowerPlay software
development tool with graphical user interface (GUI).
Switching frequency, output voltage, and device address
canbeprogrammedusingexternalconfigurationresistors.
Additionally, parameters can be set via the digital interface
or stored in EEPROM. Voltage, current, internal/external
temperature and fault status can be read back through
the bus interface.
The LTC3880/LTC3880-1 can be configured for Burst
Mode operation, discontinuous (pulse-skipping) mode
or continuous inductor current mode. The LTC3880 incor-
porates a 5V linear regulator while the LTC3880-1 uses an
external 5V supply for minimum power loss.
FEATURES
APPLICATIONS
n
High Current Distributed Power Systems
n
Telecom, Datacom and Storage Systems
n
Intelligent Energy Efficient Power Regulation
VIN
TG0
0.1F
1F
10nF
6.04k
PMBus
INTERFACE
TO/FROM
OTHER LTC DEVICES
WRITE PROTECT
2200pF
FAULT MANAGEMENT
*SOME DETAILS OMITTED
FOR CLARITY
10F
1.74k
VOUT1
1.8V
20A
4.99k
10nF
530F
2.15k
0.2F
0.56H
1.0H
TG1
BG0
PGND
BG1
BOOST0
BOOST1
SW0
SW1
INTVCC
LTC3880*
TSNS0
TSNS1
ITHO
SHARE_CLK
WP
SGND
SDA
SCL
ALERT
RUN0
RUN1
GPIO0
GPIO1
VDD33
VDD25
ITH1
ISENSEO+ ISENSE1+
VSENSEO+ VSENSE1
VSENSEO–
ISENSEO– ISENSE1–
VOUT0
3.3V
15A
VIN
1F
3880 TA01a
+
530F
+
L
, LT, LTC, LTM, PolyPhase, Burst Mode, Module, Linear Technology and the Linear logo are
registered trademarks and No RSENSE and LTpowerPlay are trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners. Protected by
U.S. Patents including 5481178, 5705919, 5929620, 6144194, 6177787, 6580258, 5408150,
7420359.
LOAD CURRENT (A)
0.01
0
EFFICIENCY
(%)
POWER
LOSS
(W)
10
30
40
50
100
70
0.1
1
3880 TA01b
20
80
90
60
0
2
6
1
4
5
3
10
100
VIN = 12V
VOUT = 1.8V
Efficiency and Power Loss
vs Load Current
相关PDF资料
PDF描述
LTC3880EUJ-1#PBF 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
LTC3880IUJ-1#PBF 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
LTC3890EGN-1#PBF SWITCHING CONTROLLER, PDSO28
LTC3890IGN-1#TRPBF SWITCHING CONTROLLER, PDSO28
LTC3890IGN-1#PBF SWITCHING CONTROLLER, PDSO28
相关代理商/技术参数
参数描述
LTC3880IUJ#PBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3880IUJ#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3880IUJ-1#PBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3880IUJ-1#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3883EUH#PBF 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN 制造商:Linear Technology 功能描述:BUCK CNTRL 24V 1MHZ 0.5/5.5V 32QFN 制造商:Linear Technology 功能描述:BUCK, CNTRL, 24V, 1MHZ, 0.5/5.5V, 32QFN 制造商:Linear Technology 功能描述:PWM CONTROLLER, BUCK, 1MHZ, 24V, QFN-32, Input Voltage:24V, Output Voltage:5.5V, Output Current:30A, Supply Voltage Min:4.5V, Supply Voltage Max:24V, Digital IC Case Style:QFN, No. of Pins:32, Frequency:1MHz, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes 制造商:Linear Technology 功能描述:DP-SWREG/Controller, Digitally Programmable, Multiphase Step-Down DC/DC Controll
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