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LTC3788IGN-1#TRPBF PDF预览

LTC3788IGN-1#TRPBF

更新时间： 2024-11-06 21:21:19
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管输出元件
页数 文件大小 规格书
30页 390K
描述
LTC3788-1 - 2-Phase, Dual Output Synchronous Boost Controller; Package: SSOP; Pins: 28; Temperature Range: -40°C to 85°C

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LTC3788IGN-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：5.21其他特性：ALSO HAS OUTPUT VOLTAGES UP TO 60V
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：38 V
最小输入电压：4.5 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G28JESD-609代码：e3
长度：9.9 mm湿度敏感等级：1
功能数量：1端子数量：28
最高工作温度：125 °C最低工作温度：-40 °C
标称输出电压：5.4 V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：900 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：30
宽度：3.9 mmBase Number Matches：1

LTC3788IGN-1#TRPBF 数据手册

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LTC3788-1  
2-Phase, Dual Output  
Synchronous Boost Controller  
FEATURES  
DESCRIPTION  
The LTC®3788-1 is a high performance 2-phase dual  
synchronous boost converter controller that drives all  
N-channel power MOSFETs. Synchronous rectification  
increases efficiency, reduces power losses and eases  
thermal requirements, allowing the LTC3788-1 to be used  
in high power boost applications.  
n
Synchronous Operation for Highest Efficiency and  
Reduced Heat Dissipation  
n
Wide Input Range: 4.5V to 38V (40V Abs Max) and  
Operates Down to 2.5V After Start-Up  
n
Output Voltages Up to 60V  
±±1 ±.2V Reference Voltage  
n
n
R
or Inductor DCR Current Sensing  
SENSE  
A constant-frequency current mode architecture allows  
a phase-lockable frequency of up to 850kHz. OPTI-LOOP  
compensationallowsthetransientresponsetobeoptimized  
over a wide range of output capacitance and ESR values.  
The LTC3788-1 features a precision 1.2V reference and a  
power good output indicator. A 4.5V to 38V input supply  
range encompasses a wide range of system architectures  
and battery chemistries.  
n
n
n
n
n
n
n
n
n
±001 Duty Cycle Capability for Synchronous MOSFET  
Low Quiescent Current: 125μA  
Phase-Lockable Frequency (75kHz to 850kHz)  
Programmable Fixed Frequency (50kHz to 900kHz)  
Adjustable Output Voltage Soft-Start  
Power Good Output Voltage Monitor  
Low Shutdown Current I : <8ꢀA  
Internal LDO Powers Gate Drive from VBIAS or EXTV  
Available in a Narrow SSOP Package  
Q
CC  
Independent SS pins for each controller ramp the output  
voltages during start-up. The PLLIN/MODE pin selects  
among Burst Mode operation, pulse-skipping mode or  
continuous inductor current mode at light loads.  
APPLICATIONS  
n
Industrial  
Foraleadless32-pinQFNpackagewithadditionalfeatures  
of adjustable current limit, clock out, phase modulation  
and two PGOOD outputs, see the LTC3788 data sheet.  
L, LT, LTC, LTM, Linear Technology, OPTI-LOOP, Burst Mode and the Linear logo are registered  
n
Automotive  
n
Medical  
Military  
n
trademarks and No R  
and ThinSOT are trademarks of Linear Technology Corporation.  
SENSE  
All other trademarks are the property of their respective owners. Protected by U. S. Patents,  
including 5408150, 5481178, 5705919, 5929620, 6144194, 6177787, 6580258.  
TYPICAL APPLICATION  
V
4.5V TO 12V START-UP VOLTAGE  
IN  
OPERATES THROUGH TRANSIENTS DOWN TO 2.5V  
V
IN  
Efficiency and Power Loss  
vs Load Current  
4.7μF  
TG2  
4.7μF  
220μF  
3mΩ  
4mΩ  
100  
90  
10000  
1000  
100  
10  
TG1 VBIAS INTV  
BOOST1  
CC  
3.3μH  
1.25μH  
BOOST2  
SW2  
V
V
80  
OUT  
12V AT 5A  
OUT  
0.1μF  
0.1μF  
24V AT 3A  
SW1  
70  
LTC3788-1  
60  
50  
BG1  
BG2  
+
+
SENSE1  
SENSE2  
40  
30  
20  
10  
0
–
–
SENSE1  
SENSE2  
PGND  
VFB2  
V
V
= 12V  
IN  
OUT  
1
= 24V  
110k  
232k  
Burst Mode OPERATION  
FIGURE 9 CIRCUIT  
VFB1  
0.1  
FREQ  
PLLIN/MODE  
0.00001 0.0001 0.001 0.01  
0.1  
1
10  
OUTPUT CURRENT (A)  
37881 TA01b  
ITH1 SS1 SGND SS2 ITH2  
15nF  
220μF  
220μF  
15nF  
2.7k  
100pF  
0.1μF  
220pF  
12.1k  
8.66k  
12.1k  
0.1μF  
37881 TA01a  
37881fc  
1
1234567...30

中文翻译

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LTC3788IGN-1#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3788IGN-1#PBF Linear

完全替代

 LTC3788-1 - 2-Phase, Dual Output Synchronous Boost Controller; Package: SSOP; Pins: 28; Te

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