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LT3782EUFD PDF预览

LT3782EUFD

更新时间: 2024-02-28 07:41:37
品牌 Logo 应用领域
凌特 - Linear 开关控制器
页数 文件大小 规格书
20页 224K
描述
2-Phase Step-UP DC/DC Controller

LT3782EUFD 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:TSSOP包装说明:HTSSOP, TSSOP28,.25
针数:28Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.16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:40 V最小输入电压:6 V
标称输入电压:13 VJESD-30 代码:R-PDSO-G28
JESD-609代码:e3长度:9.7 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最大输出电流:4 A
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装等效代码:TSSOP28,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.2 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:533 kHz
技术:BIPOLAR温度等级:AUTOMOTIVE
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:4.4 mm
Base Number Matches:1

LT3782EUFD 数据手册

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LT3782  
2-Phase Step-UP  
DC/DC Controller  
FEATURES  
DESCRIPTION  
The LT®3782 is a current mode two phase step-up DC/DC  
converter controller. Its high switching frequency (up to  
500kHz) and 2-phase operation reduce system filtering  
capacitance and inductance requirements.  
n
2-Phase Operation Reduces Required Input and  
Output Capacitance  
n
Programmable Switching Frequency:  
150kHz to 500kHz  
6V to 40V Input Range  
10V Gate Drive with V ≥13V  
High Current Gate Drive (4A)  
Programmable Soft-Start and Current Limit  
Programmable Slope Compensation for  
High Noise Immunity  
MOSFET Gate Signals with Programmable  
Falling Edge Delay for External Synchronous  
Drivers  
n
With 10V gate drive (V ≥13V) and 4A peak drive current,  
CC  
n
CC  
the LT3782 can drive most industrial grade high power  
MOSFETs with high efficiency. For synchronous applica-  
tions, the LT3782 provides synchronous gate signals with  
programmable falling edge delay to avoid cross conduc-  
tion when using external MOSFET drivers. Other features  
include programmable undervoltage lockout, soft-start,  
current limit, duty cycle clamp (50% or higher) and slope  
compensation.  
n
n
n
n
n
n
n
Programmable Undervoltage Lockout  
Programmable Duty Cycle Clamp (50% or Higher)  
Thermally Enhanced 28-Lead TSSOP and 4mm × 5mm  
QFN Packages  
The LT3782 is available in thermally enhanced 28-lead  
TSSOP and 4mm × 5mm QFN packages.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 6144194.  
APPLICATIONS  
n
Industrial Equipment  
n
n
Telecom Infrastructure  
Interleaved Isolated Power Supply  
TYPICAL APPLICATION  
50V 4A Boost Converter  
V
V
IN  
10V TO 36V  
OUT  
50V, 4A  
L1  
C
D1  
OUT1  
V
GBIAS1  
CC  
Efficiency and Power Loss  
vs Load Current  
10μF  
50V  
2x  
30BQ060  
1μF  
R6  
+
GBIAS2  
GBIAS  
L2  
C3  
2μF  
825k  
D2  
+
C
97  
95  
93  
91  
89  
87  
85  
18  
15  
12  
9
OUT2  
220μF  
C
30BQ060  
IN  
RUN  
M1  
10μF  
50V  
2x  
V
= 24V  
IN  
EFFICIENCY  
BGATE1  
Si7852dp  
2x  
R8  
274k  
V
= 12V  
= 12V  
IN  
R
LT3782  
S1  
0.004Ω  
V
R
EE1  
SLOPE  
59k  
V
IN  
M2  
Si7852dp  
2x  
SLOPE  
DELAY  
DCL  
BGATE2  
L1, L2: PB2020.223  
, C : X7R, TDK  
V
IN  
= 24V  
6
C
R
FREQ  
80k  
IN OUT1  
R
S2  
POWER LOSS  
0.004Ω  
R
SET  
3
V
EE2  
+
10Ω  
10Ω  
10nF  
SS  
0
SENSE1  
SENSE1  
0.1μF  
0
1
2
3
4
5
10nF  
I
(A)  
OUT  
R
F1  
475k  
V
C
3782 TA01b  
+
13k  
6.8nF  
SENSE2  
SENSE2  
100pF  
R
F2  
24.9k  
FB  
GND  
3782 TA01  
3782ff  
1

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