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LTC3785EUF#TRPBF PDF预览

LTC3785EUF#TRPBF

更新时间: 2024-09-15 19:14:59
品牌 Logo 应用领域
凌特 - Linear 开关
页数 文件大小 规格书
20页 273K
描述
LTC3785 - 10V, High Efficiency, Synchronous, No RSENSE Buck-Boost Controller; Package: QFN; Pins: 24; Temperature Range: -40°C to 85°C

LTC3785EUF#TRPBF 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, LCC24,.16SQ,20
针数:24Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:2.82其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 2.7V TO 10V
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:10 V
最小输入电压:2.7 V标称输入电压:3.6 V
JESD-30 代码:S-PQCC-N24JESD-609代码:e3
长度:4 mm湿度敏感等级:1
功能数量:1端子数量:24
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:3 A标称输出电压:4.35 V
封装主体材料:PLASTIC/EPOXY封装代码:HVQCCN
封装等效代码:LCC24,.16SQ,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):250
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:PHASE-SHIFT最大切换频率:1000 kHz
技术:CMOS温度等级:INDUSTRIAL
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:4 mm
Base Number Matches:1

LTC3785EUF#TRPBF 数据手册

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LTC3785  
10V, High Efficiency,  
Synchronous, No R  
SENSE  
Buck-Boost Controller  
FeaTures  
DescripTion  
The LTC®3785 is a high power synchronous buck-boost  
controller that drives all N-channel power MOSFETs from  
input voltages above, below and equal to the output volt-  
age. With an input range of 2.7V to 10V, the LTC3785 is  
well suited for a wide variety of single or dual cell Li-Ion  
or multicell alkaline/NiMH applications.  
n
Single Inductor Architecture Allows V Above,  
IN  
Below or Equal to V  
OUT  
n
n
n
n
n
n
n
n
n
n
n
2.7V to 10V Input and Output Range  
Up to 96% Efficiency  
Up to 10A of Output Current  
All N-channel MOSFETs, No R  
SENSE  
True Output Disconnect During Shutdown  
Programmable Current Limit and Soft-Start  
Optional Short-Circuit Shutdown Timer  
Output Overvoltage and Undervoltage Protection  
Programmable Frequency: 100kHz to 1MHz  
Selectable Burst Mode® Operation  
The operating frequency can be programmed from  
100kHz to 1MHz. The soft-start time and current limit are  
also programmable. The soft-start capacitor doubles as  
the fault timer which can program the IC to latch off or  
recycle after a determined off time. Burst Mode opera-  
tion is user controlled and can be enabled by driving the  
MODE pin high.  
Available in 24-Lead (4mm × 4mm) Exposed Pad  
QFN Package  
Protection features include foldback current limit, short-  
circuit and overvoltage protection.  
applicaTions  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
of Linear Technology Corporation. No R  
is a trademark of Linear Technology Corporation.  
SENSE  
n
Palmtop Computers  
All other trademarks are the property of their respective owners.  
n
Handheld Instruments  
n
Wireless Modems  
Cellular Telephones  
n
Typical applicaTion  
V
IN  
2.7V  
V
OUT  
Efficiency vs Input Voltage  
4.7µF  
TO 10V  
V
IN  
V
CC  
100  
V
= 3.3V  
= 500kHz  
OUT  
OSC  
205k  
I
SVIN  
TG1  
F
22µF  
V
SENSE  
1.3k  
270pF  
205k 121k  
95  
90  
85  
V
BST1  
I
= 2A  
LOAD  
0.22µF  
SW1  
FB  
I
= 1A  
LOAD  
I
SSW1  
121k 12k  
1nF  
V
DRV  
BG1  
4.7µH  
LTC3785  
I
V
C
V
3.3V  
5A  
59k  
OUT  
RT  
SVOUT  
TG2  
MODE  
2.5  
5.5  
7
8.5  
10  
4
V
(V)  
IN  
3785 TA01b  
V
BST2  
0.22µF  
RUN/SS  
SW2  
100µF  
I
I
LSET  
SSW2  
42.2k  
CCM  
BG2  
1nF  
GND  
3785 TA01a  
3785fc  

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