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LTC3892EFE-1#PBF

更新时间： 2024-11-05 18:48:35
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
38页 1316K
描述
LTC3892 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller; Package: TSSOP; Pins: 28; Temperature Range: -40°C to 85°C

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LTC3892EFE-1#PBF 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：TSSOP包装说明：TSSOP-28
针数：28Reach Compliance Code：compliant
风险等级：2.22Samacsys Description：Switching Voltage Regulators Low IQ 60V Dual Buck Controller w/ boost diodes and 10V drive
Base Number Matches：1

LTC3892EFE-1#PBF 数据手册

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LTC3892/  
LTC3892-1/LTC3892-2  
60V Low I , Dual, 2-Phase  
Q
Synchronous Step-Down  
DC/DC Controller  
DESCRIPTION  
FEATURES  
The LTC®3892/LTC3892-1/LTC3892-2 is a high perfor-  
mancedualstep-downDC/DCswitchingregulatorcontrol-  
n
Wide V Range: 4.5V to 60V (65V Abs Max)  
IN  
n
Wide Output Voltage Range: 0.8V ≤ V  
≤ 99% • V  
OUT  
IN  
n
n
n
n
n
Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) ler that drives all N-channel synchronous power MOSFET  
No External Bootstrap Diodes Required  
stages. Power loss and noise are minimized by operating  
the two controller output stages out-of-phase.  
Low Operating I : 29μA (One Channel On)  
Q
Selectable Gate Drive UVLO Thresholds  
The gate drive voltage can be programmed from 5V to  
10V to allow the use of logic or standard-level FETs and  
to maximize efficiency. Internal switches in the top gate  
drivers eliminate the need for external bootstrap diodes.  
Out-of-Phase Operation Reduces Required Input  
Capacitance and Power Supply Induced Noise  
Phase-Lockable Frequency: 75kHz to 850kHz  
Selectable Continuous, Pulse Skipping or Low Ripple  
Burst Mode® Operation at Light Loads  
n
n
Awide4.5Vto60Vinputsupplyrangeencompassesawide  
rangeofintermediatebusvoltagesandbatterychemistries.  
n
n
n
n
n
Selectable Current Limit (LTC3892/LTC3892-2)  
Very Low Dropout Operation: 99% Duty Cycle  
Power Good Output Voltage Monitors (LTC3892/LTC3892-2)  
Output voltages up to 99% of V can be regulated. OPTI-  
IN  
LOOP® compensation allows the transient response and  
loop stability to be optimized over a wide range of output  
capacitance and ESR values.  
Low Shutdown I : 3.6μA  
Q
Small 32-Lead 5mm × 5mm QFN Package (LTC3892/  
LTC3892-2) or TSSOP Package (LTC3892-1)  
The29μAno-loadquiescentcurrentextendsoperatingrun  
time in battery powered systems. For a comparison of the  
LTC3892 to the LTC3892-1 and LTC3892-2, see Table 1  
in the Pin Functions section of this data sheet.  
L, LT, LTC, LTM, Burst Mode, OPTI-LOOP, Linear Technology and the Linear logo are  
registered trademarks of Analog Devices, Inc. All other trademarks are the property of their  
respective owners. Protected by U.S. Patents including 5481178, 5705919, 5929620, 6144194,  
6177787, 6580258.  
APPLICATIONS  
n
Automotive and Industrial Power Systems  
n
Distributed DC Power Systems  
n
High Voltage Battery Operated Systems  
TYPICAL APPLICATION  
High Efficiency Dual 5V/12V Output Step-Down Converter  
VIN  
12.5V TO 60V  
RUN1  
TG1  
VIN  
RUN2  
TG2  
47µF  
Efficiency vs Output Current  
96  
BOOST1  
BOOST2  
0.1µF  
0.1µF  
V
OUT  
= 12V  
IN  
8mΩ  
5.6µH  
V
5mΩ  
15µH  
V
OUT2  
OUT1  
V
= 5V  
95  
94  
93  
92  
91  
90  
89  
88  
5V  
12V  
SW1  
SW2  
Burst Mode OPERATION  
8A  
5A  
BG1  
BG2  
220µF  
150µF  
LTC3892  
+
+
SENSE1  
SENSE2  
100k  
1nF  
1nF  
–
–
SENSE1  
SENSE2  
GATE DRIVE  
DRV =5V  
V
FB1  
V
CC  
FB2  
DRV =6V  
CC  
ITH1  
TRACK/SS1  
ITH2  
TRACK/SS2  
DRV =8V  
CC  
DRV =10V  
CC  
7.15k  
VPRG1  
DRVSET  
7.5k  
34.8k  
0.01  
0.1  
1
10  
DRVUV  
LOAD CURRENT (A)  
100pF  
0.1µF  
100pF  
0.1µF  
3892 F01b  
INTV  
GND  
DRV  
CC  
CC  
2.2nF  
1nF  
0.1µF  
4.7µF  
3892 TA01  
38921fc  
1
For more information www.linear.com/LTC3892  
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LTC3892EFE-1#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3892EFE-1#TRPBF Linear

完全替代

 IC REG CTRLR BUCK 28TSSOP

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