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LTC3861IUH-1#PBF PDF预览

LTC3861IUH-1#PBF

更新时间： 2024-01-25 09:10:28
品牌 Logo 应用领域
凌特 - Linear 开关输出元件
页数 文件大小 规格书
38页 1231K
描述
LTC3861-1 - Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing; Package: QFN; Pins: 32; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3861IUH-1#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC32,.2SQ,20
针数：32Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：4.47其他特性：OUTPUT VOLATGE RANGE FROM 0.6 VOLT TO 5 VOLT, ALSO OPERATES WITH THE RANGE OF 3 VOLT TO 24 VOLT
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：5.5 V
最小输入电压：3 V标称输入电压：5 V
JESD-30 代码：S-PQCC-N32JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：32
最高工作温度：125 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC32,.2SQ,20封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：2250 kHz
技术：CMOS温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：5 mm
Base Number Matches：1

LTC3861IUH-1#PBF 数据手册

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LTC3861-1  
Dual, Multiphase Step-Down  
Voltage Mode DC/DC Controller  
with Accurate Current Sharing  
DescripTion  
FeaTures  
The LTC®3861-1 is a dual PolyPhase® synchronous step-  
down switching regulator controller for high current  
distributed power systems, digital signal processors, and  
othertelecomandindustrialDC/DCpowersupplies.Ituses  
aconstant-frequencyvoltagemodearchitecturecombined  
with very low offset, high bandwidth error amplifiers and  
a remote output sense differential amplifier for excellent  
transient response and output regulation.  
n
Operates with Power Blocks, DrMOS or External  
Gate Drivers and MOSFETs  
n
Constant-Frequency Voltage Mode Control with  
Accurate Current Sharing  
±±0.75 ±0ꢀV Voltage Reference  
n
n
Differential Remote Output Voltage Sense Amplifier  
Multiphase Capability—Up to 12-Phase Operation  
n
n
Programmable Current Limit  
n
Safely Powers a Prebiased Load  
ThecontrollerincorporateslosslessinductorDCRcurrent  
sensingtomaintaincurrentbalancebetweenphasesandto  
provide overcurrent protection. The chip operates from a  
n
Programmable or PLL-Synchronizable Switching  
Frequency Up to 2027MHz  
n
Lossless Current Sensing Using Inductor DCR or  
V
supply between 3V and 5.5V and is designed for step-  
CC  
Precision Current Sensing with Sense Resistor  
down conversion from V between 3V and 24V to output  
IN  
n
V
Range: 3V to 5.5V  
CC  
voltages between 0.6V and V – 0.5V.  
CC  
n
n
n
n
n
V Range: 3V to 24V  
IN  
Inductor current reversal is disabled during soft-start to  
safely power prebiased loads. The constant operating  
frequency can be synchronized to an external clock or  
linearly programmed from 250kHz to 2.25MHz. Up to six  
LTC3861-1controllerscanoperateinparallelfor1-, 2-, 3-,  
4-, 6- or 12-phase operation.  
Power Good Output Voltage Monitor  
Output Voltage Tracking Capability  
Programmable Soft-Start  
Available in a 32-Pin 5mm × 5mm QFN Package  
applicaTions  
TheLTC3861-1ispin-to-pincompatiblewiththeLTC3860.  
It is available in a 32-pin 5mm × 5mm QFN package. The  
LTC3861is a 36-pin QFN version of the LTC3861-1, which  
has dual differential output voltage sense amplifiers.  
L, LT, LTC, LTM, PolyPhase, Linear Technology and the Linear logo are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners. Protected by U.S. Patents, including 6144194, 5055767  
n
High Current Distributed Power Systems  
n
DSP, FPGA and ASIC Supplies  
n
Datacom and Telecom Systems  
Industrial Power Supplies  
n
Typical applicaTion  
V
IN  
, 7V TO 14V  
LTC4449  
GND  
180µF  
IN  
V
V
V
, 7V TO 14V  
IN  
TG  
TS  
BG  
V
LOGIC  
CC  
BOOST  
CC  
V
CC  
V
VINSNS  
PWM1  
CC  
0.47µH  
2.87k  
FREQ  
FB2  
1µF  
28.7k  
LTC3861-1  
59k  
0.22µF  
RUN1,2  
I
LIM2  
I
LIM1  
VSNSOUT  
VSNSP  
ISNS1P  
ISNS1N  
ISNS2N  
ISNS2P  
V
1.2V  
60A  
0.22µF  
0.22µF  
OUT  
V
OUT  
VSNSN  
330µF  
× 6  
100µF  
× 4  
CONFIG  
V
IN  
2.87k  
1nF  
LTC4449  
PWM2  
IN  
V
CC  
BOOST  
GND  
TG  
20k 221Ω  
0.47µH  
V
CC  
FB1  
LOGIC  
I
AVG  
38611 TA01  
V
TS  
COMP1,2 SS1,2 SGND CLKIN  
BG  
1nF  
20k  
13k 220pF  
100pF  
0.1µF  
0.22µF  
38611fb  
1
For more information www.linear.com/LTC3861-1  
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