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参数资料
| 型号： | LTM8023MPV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/24页 |
| 文件大小： | 0K |
| 描述： | IC BUCK SYNC ADJ 2A 50LGA |
| 产品培训模块： | LTM802x High Voltage μModule Switching Regulators Wide Temperature DC/DC Converter µModules High Voltage µModule DC/DC Regulators Power Module vs. Discrete DC to DC |
| 软件下载： | LTM8023 Spice Model |
| 产品目录绘图： | LTM8022-8023 |
| 设计资源： | LTM8023MPV#PBF Footprint.bxl |
| 特色产品： | μModule Products |
| 标准包装： | 210 |
| 系列： | µModule® |
| 类型： | 非隔离（POL） |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 3.6V |
| 电压 - 输入（最大）： | 36V |
| Voltage - Output 1： | 0.8 ~ 10 V |
| 电流 - 输出（最大）： | 2A |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 50-BLGA |
| 尺寸/尺寸： | 0.44" L x 0.35" W x 0.11" H（11.3mm x 9.0mm x 2.8mm） |
| 包装： | 托盘 |
| 工作温度： | -55°C ~ 125°C |
| 产品目录页面： | 2711 (CN2011-ZH PDF) |
| 配用： | DC1195A-ND - BOARD DEMO LTM8023 |
LTM8023
APPLICATIONS INFORMATION
PCB Layout
Most of the headaches associated with PCB layout have
been alleviated or even eliminated by the high level of
integration of the LTM8023. The LTM8023 is neverthe-
less a switching power supply, and care must be taken to
minimize EMI and ensure proper operation. Even with the
high level of integration, you may fail to achieve specified
operation with a haphazard or poor layout. See Figure 5
for a suggested layout.
GND
R T R ADJ
SHARE
SYNC
PGOOD
RUN/SS
AUX BIAS
C OUT C IN
V OUT V IN
8023 F05
Figure 5. Layout Showing Suggested External Components, GND
Plane and Thermal Vias
Ensure that the grounding and heatsinking are acceptable.
A few rules to keep in mind are:
1. Place the R ADJ and R T resistors as close as possible to
their respective pins.
2. Place the C IN capacitor as close as possible to the V IN
and GND connection of the LTM8023.
3. Place the C OUT capacitor as close as possible to the
V OUT and GND connection of the LTM8023.
4. Place the C IN and C OUT capacitors such that their
ground current flow directly adjacent or underneath
the LTM8023.
5. Connect all of the GND connections to as large a copper
pour or plane area as possible on the top layer. Avoid
breaking the ground connection between the external
components and the LTM8023.
6. Use vias to connect the GND copper area to the boards
internal ground plane. Liberally distribute these GND vias
to provide both a good ground connection and thermal
path to the internal planes of the printed circuit board.
Hot-Plugging Safely
The small size, robustness and low impedance of ceramic
capacitors make them an attractive option for the input
bypass capacitor of LTM8023. However, these capacitors
can cause problems if the LTM8023 is plugged into a live
supply (see Linear Technology Application Note 88 for
a complete discussion). The low loss ceramic capacitor
combined with stray inductance in series with the power
source forms an underdamped tank circuit, and the volt-
age at the V IN pin of the LTM8023 can ring to twice the
nominal input voltage, possibly exceeding the LTM8023’s
rating and damaging the part. If the input supply is poorly
controlled or the user will be plugging the LTM8023 into
an energized supply, the input network should be designed
to prevent this overshoot. Figure 6 shows the waveforms
that result when an LTM8023 circuit is connected to a 24V
supply through six feet of 24-gauge twisted pair. The first
plot is the response with a 2.2μF ceramic capacitor at the
input. The input voltage rings as high as 35V and the input
current peaks at 20A. One method of damping the tank
circuit is to add another capacitor with a series resistor to
the circuit. In Figure 6b an aluminum electrolytic capacitor
has been added. This capacitor’s high equivalent series
resistance damps the circuit and eliminates the voltage
overshoot. The extra capacitor improves low frequency
8023fi
14
For more information www.linear.com/LTM8023
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTM8023MPY#PBF | 功能描述:IC DC/DC UMODULE 2A 50BGA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:µModule® 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:66V 电压 - 输入（最大）:160V Voltage - Output 1:12V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:50W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包装:散装 工作温度:-25°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
| LTM8023V | 制造商:LINER 制造商全称:Linear Technology 功能描述:2A, 36V DC/DC μModule |
| LTM8025 | 制造商:LINER 制造商全称:Linear Technology 功能描述:36V, 3A Step-Down μModule Converter |
| LTM8025EV | 制造商:LINER 制造商全称:Linear Technology 功能描述:36V, 3A Step-Down μModule Converter |
| LTM8025EV#PBF | 功能描述:IC CONVERTER BUCK 3A ADJ 70LGA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:µModule® 特色产品:VYB Series High Efficiency Converters 3D 型号:VYB15W-Q48-S15 标准包装:63 系列:V-Infinity VYB15W 类型:隔离 输出数:1 电压 - 输入（最小）:18V 电压 - 输入（最大）:75V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:1A 电源（瓦） - 制造商系列:15W 电压 - 隔离:1.5kV（1500V） 特点:具有远程开/关功能和 UVLO 安装类型:通孔 封装/外壳:6-DIP 模块 尺寸/尺寸:2.00" L x 1.00" W x 0.44" H（50.8mm x 25.4mm x 11.3mm） 包装:管件 工作温度:-40°C ~ 85°C 效率:85% 电源（瓦特）- 最大:15W 其它名称:102-2329656-91325R |
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