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LTC3890IGN-1#TRPBF

更新时间： 2024-09-13 20:37:51
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
36页 865K
描述
LTC3890-1 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller; Package: SSOP; Pins: 28; Temperature Range: -40°C to 85°C

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LTC3890IGN-1#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP, SSOP28,.25
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.16其他特性：OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 24V, ALSO OPERATES AS LDO REGULATOR
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：60 V
最小输入电压：4 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G28JESD-609代码：e3
长度：9.893 mm湿度敏感等级：1
功能数量：2端子数量：28
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：SSOP
封装等效代码：SSOP28,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：835 kHz
技术：CMOS温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.899 mm
Base Number Matches：1

LTC3890IGN-1#TRPBF 数据手册

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LTC3890-1  
60V Low I , Dual, 2-Phase  
Q
Synchronous Step-Down  
DC/DC Controller  
DESCRIPTION  
FEATURES  
The LTC®3890-1 is a high performance dual step-down  
switching regulator DC/DC controller that drives all  
N-channelsynchronouspowerMOSFETstages.Aconstant  
frequency current mode architecture allows a phase-  
lockablefrequencyofupto850kHz.Powerlossandsupply  
noiseareminimizedbyoperatingthetwocontrolleroutput  
stages out-of-phase.  
n
Wide V Range: 4V to 60V (65V Abs Max)  
IN  
n
Low Operating I : 50µA (One Channel On)  
Q
n
n
n
Wide Output Voltage Range: 0.8V ≤ V  
≤ 24V  
OUT  
R
SENSE  
or DCR Current Sensing  
Out-of-Phase Controllers Reduce Required Input  
Capacitance and Power Supply Induced Noise  
Phase-Lockable Frequency (75kHz to 850kHz)  
Programmable Fixed Frequency (50kHz to 900kHz)  
Selectable Continuous, Pulse-Skipping or Low Ripple  
Burst Mode® Operation at Light Loads  
Very Low Dropout Operation: 99% Duty Cycle  
Adjustable Output Voltage Soft-Start or Tracking  
Power Good Output Voltage Monitor  
Output Overvoltage Protection  
Low Shutdown I : <14µA  
Internal LDO Powers Gate Drive from V or EXTV  
No Current Foldback During Start-Up  
Narrow SSOP Package  
n
n
n
The50μAno-loadquiescentcurrentextendsoperatinglife  
in battery-powered systems. OPTI-LOOP® compensation  
allows the transient response to be optimized over a wide  
range of output capacitance and ESR values. A wide 4V  
to 60V input supply range encompasses a wide range of  
intermediate bus voltages and battery chemistries.  
n
n
n
n
n
n
n
n
Independent TRACK/SS pins for each controller ramp the  
output voltages during start-up. Current foldback limits  
MOSFET heat dissipation during short-circuit conditions.  
ThePLLIN/MODEpinselectsamongBurstModeoperation,  
pulse-skipping mode, or continuous conduction mode at  
light loads.  
Q
IN  
CC  
APPLICATIONS  
Foraleadless32-pinQFNpackagewithadditionalfeatures  
of adjustable current limit, clock out, phase modulation  
and two PGOOD outputs, see the LTC3890 data sheet.  
L, LT, LTC, LTM, Linear Technology, Burst Mode, OPTI-LOOP 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 5481178, 5705919, 5929620,  
6100678, 6144194, 6177787, 6304066, 6580258, 7230497.  
n
Automotive Always-On Systems  
n
Battery Operated Digital Devices  
n
Distributed DC Power Systems  
TYPICAL APPLICATION  
High Efficiency Dual 8.5V/3.3V Output Step-Down Converter  
Efficiency and Power Loss  
V
vs Output Current  
IN  
9V TO 60V  
22µF  
10000  
1000  
100  
100  
90  
80  
70  
60  
50  
40  
30  
20  
4.7µF  
V
V
= 12V  
IN  
OUT  
V
IN  
INTV  
CC  
= 3.3V  
TG1  
TG2  
0.1µF  
0.1µF  
BOOST1  
SW1  
BOOST2  
SW2  
4.7µH  
8µH  
BG1  
BG2  
LTC3890-1  
PGND  
10  
+
+
SENSE1  
SENSE1  
SENSE2  
0.01Ω  
0.008Ω  
1
–
–
V
8.5V  
3A  
SENSE2  
10  
0
OUT2  
V
OUT1  
3.3V  
5A  
V
V
FB1  
FB2  
0.1  
10  
100k  
470µF  
100k  
10.5k  
ITH1  
ITH2  
0.0001 0.001  
0.01  
0.1  
1
1000pF  
34.8k  
1000pF  
OUTPUT CURRENT (A)  
330µF  
TRACK/SS1 SGND TRACK/SS2  
0.1µF  
38901 TA01b  
31.6k  
34.8k  
0.1µF  
38901 TA01a  
38901fb  
1
1234567...36

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LTC3890IGN-1#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3890IGN-1#PBF Linear

完全替代

 LTC3890-1 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller; Package: SSO

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