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参数资料
| 型号： | LTC3536IMSE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 23/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST SYNC ADJ 12MSOP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.8 V ~ 5.5 V |
| 输入电压： | 1.8 V ~ 5.5 V |
| PWM 型： | 电压模式，混合 |
| 频率 - 开关： | 300kHz ~ 2MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-TSSOP （0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 12-MSOP，裸露焊盘 |
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LTC3536
APPLICATIONS INFORMATION
Switching Frequency Selection
Higher switching frequencies facilitate the use of smaller
inductors as well as smaller input and output filter capaci-
tors which results in a smaller solution size and reduced
component height. However, higher switching frequencies
also generally reduce conversion efficiency due to the
increased switching losses. In addition, the maximum
voltage step-up ratio is reduced slightly at higher switching
frequencies as shown in the maximum duty cycle versus
switching frequency curve in the Typical Performance
Characteristics section of this data sheet.
PCB Layout Considerations
The LTC3536 buck-boost converter switches large currents
at high frequencies. Special attention should be paid to the
PC board layout to ensure a stable, noise-free and efficient
application circuit. A few key guidelines are provided:
1. The parasitic inductance and resistance of all circulating
high current paths should be minimized. This can be
accomplished by keeping the routes as short and as
wide as possible. Capacitor ground connections should
via down to the ground plane by way of the shortest
route possible. The bypass capacitors on PV IN and
V OUT should be placed as close to the IC as possible
and should have the shortest possible paths to ground.
2. The exposed pad is the electrical power ground connec-
tion for the LTC3536 in the DD package. Multiple vias
should connect the backpad directly to the ground plane.
In addition, maximization of the metallization connected
to the backpad will improve the thermal environment
and improve the power handling capabilities of the IC
in either package.
3. The components their connections with high current
should all be placed over a complete ground plane to
minimize loop cross-sectional areas. This minimizes
EMI and reduces inductive drops.
4. Connections to all of the components with high current
should be made as wide as possible to reduce the series
resistance. This will improve efficiency and maximize the
output current capability of the buck-boost converter
5. To prevent large circulating currents in the ground plane
from disrupting operation of the LTC3536, all small-
signal grounds should return directly to GND by way
of a dedicated Kelvin route. This includes the ground
connection for the RT pin resistor and the ground con-
nection for the feedback network.
6. Keep the routes connecting to the high impedance,
noise sensitive inputs FB and RT as short as possible
to reduce noise pick-up. Example from MODE route in
case the chip is synchronized with external clock.
3536fa
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3537 | 制造商:LINER 制造商全称:Linear Technology 功能描述:2.2 MHz, 600mA Synchronous Step-Up DC/DC Converter and 100mA LDO |
| LTC3537EUD#PBF | 功能描述:IC REG DL BST/LINEAR SYNC 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LTC3537EUD#TRPBF | 功能描述:IC REG DL BST/LINEAR SYNC 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LTC3537EUD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2.2 MHz, 600mA Synchronous Step-Up DC/DC Converter and 100mA LDO |
| LTC3537EUD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2.2 MHz, 600mA Synchronous Step-Up DC/DC Converter and 100mA LDO |
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