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LTC3703IG-5#PBF

更新时间： 2024-09-15 21:15:47
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
32页 311K
描述
LTC3703-5 - 60V Synchronous Switching Regulator Controller; Package: SSOP; Pins: 28; Temperature Range: -40°C to 85°C

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LTC3703IG-5#PBF 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,.3
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：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：15 V最小输入电压：4.1 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G28
JESD-609代码：e3长度：10.2 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：5 A
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP28,.3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：2 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：330 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：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：5.3 mm
Base Number Matches：1

LTC3703IG-5#PBF 数据手册

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LTC3703  
100V Synchronous  
Switching Regulator  
Controller  
FEATURES  
DESCRIPTION  
The LTC®3703 is a synchronous step-down switching  
regulator controller that can directly step down voltages  
from up to 100V, making it ideal for telecom and automo-  
tive applications. The LTC3703 drives external N-channel  
MOSFETs using a constant frequency (up to 600kHz),  
voltage mode architecture.  
n
High Voltage Operation: Up to 100V  
n
Large 1Ω Gate Drivers  
n
No Current Sense Resistor Required  
n
Step-Up or Step-Down DC/DC Converter  
n
Dual N-Channel MOSFET Synchronous Drive  
n
Excellent Line and Load Transient Response  
n
Programmable Constant Frequency: 100kHz to  
A precise internal reference provides 1% DC accuracy.  
A high bandwidth error amplifier and patented line feed-  
forward compensation provide very fast line and load  
transient response. Strong 1Ω gate drivers allow the  
LTC3703todrivemultipleMOSFETsforhighercurrentap-  
plications.Theoperatingfrequencyisuserprogrammable  
from 100kHz to 600kHz and can also be synchronized to  
an external clock for noise-sensitive applications. Cur-  
rent limit is programmable with an external resistor and  
utilizesthevoltagedropacrossthesynchronousMOSFET  
to eliminate the need for a current sense resistor. For ap-  
plications requiring up to 60V operation with logic-level  
MOSFETS, refer to the LTC3703-5 data sheet.  
600kHz  
n
1% Reference Accuracy  
n
Synchronizable up to 600kHz  
n
Selectable Pulse-Skip Mode Operation  
n
Low Shutdown Current: 50μA Typ  
n
Programmable Current Limit  
n
Undervoltage Lockout  
n
Programmable Soft-Start  
n
16-Pin Narrow SSOP and 28-Pin SSOP Packages  
APPLICATIONS  
n
48V Telecom and Base Station Power Supplies  
n
Networking Equipment, Servers  
PARAMETER  
Maximum V  
LTC3703-5  
60V  
LTC3703  
100V  
n
Automotive and Industrial Control  
IN  
L, 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  
5408150, 5055767, 6677210, 5847554, 5481178, 6304066, 6580258.  
MOSFET Gate Drive  
4.5V to 15V  
3.7V  
9.3V to 15V  
8.7V  
+
V
CC  
V
CC  
UV  
UV  
–
3.1V  
6.2V  
TYPICAL APPLICATION  
V
CC  
9.3V TO 15V  
+
V
22μF  
25V  
IN  
Efficiency vs Load Current  
BAS19  
0.1μF  
15V TO 100V  
100  
95  
90  
85  
80  
MODE/SYNC  
V
IN  
+
30k  
68μF  
V = 25V  
IN  
f
BOOST  
TG  
SET  
V
= 50V  
LTC3703  
Si7456DP  
IN  
10k  
COMP  
8μH  
1000pF  
470pF  
15k  
V
= 75V  
IN  
V
12V  
5A  
OUT  
FB  
SW  
+
270μF  
16V  
I
V
MAX  
CC  
8.06k  
1%  
10Ω  
INV  
DRV  
CC  
0.1μF  
Si7456DP  
MBR1100  
RUN/SS  
GND  
BG  
113k  
1%  
10μF  
100Ω  
2200pF  
BGRTN  
0
1
2
3
4
5
1μF  
LOAD (A)  
3703 F01b  
3703 F01  
Figure 1. High Efficiency High Voltage Step-Down Converter  
3703fb  
1
1234567...32

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