参数资料
型号: LTM8052AIV#PBF
厂商: Linear Technology
文件页数: 19/30页
文件大小: 0K
描述: IC UMODULE 36VIN 5A CVCC 81LGA
产品培训模块: LTM8026 and LTM8052 Step-Down uModule Regulators
标准包装: 119
系列: *
LTM8052/LTM8052A
APPLICATIONS INFORMATION
C (V IN 2 ? V TRIP 2 ) = 27.5μJ
27.5μJ = 10μF(V IN 2 ? 15V 2 )
Figures 5a through 5c are crowbar circuits, which attempt
to prevent the input voltage from rising above some level
by clamping the input to GND through a power device. In
some cases, it is possible to simply turn off the LTM8052/
LTM8052A when the input voltage exceeds some thresh-
old. This is possible when the voltage power source that
drives current into V OUT never exceeds V IN . An example
of this circuit is shown in Figure 5d. When the power
source on the output drives V IN above a predetermined
threshold, the comparator pulls down on the RUN pin
and stops switching in the LTM8052/LTM8052A. When
this happens, the input capacitance needs to absorb the
energy stored within the LTM8052/LTM8052A’s internal
inductor, resulting in an additional voltage rise. As shown
in the Block Diagram, the internal inductor value is 2.2uH.
If the LTM8052/LTM8052A negative current limit is set
to 5A, for example, the energy that the input capacitance
must absorb is 1/2 LI 2 = 27.5μJ. Suppose the comparator
circuit in Figure 5d is set to pull the RUN pin down when
V TRIP = 15V. The input voltage will rise according to the
capacitor energy equation:
1
2
If the total input capacitance is 10μF, the input voltage
will rise to:
1
2
V IN = 15.2V
For applications where only sourcing current (one quadrant
operation) is desired, use LTM8026.
LOAD
CURRENT
SCR
ZENER
DIODE
V IN
V OUT
LTM8052
GND
FUSE
SOURCING
LOAD
8052 F05a
Figure 5c. The SCR Latches On When the Activation Threshold is
Reached, So a Fuse or Some Other Method of Disconnecting the
Load Should be Used
LOAD
CURRENT
V IN
V OUT
LTM8052
10μF
RUN
GND
SOURCING
LOAD
+
EXTERNAL
REFERENCE
VOLTAGE
8052 F05d
Figure 5d. This Comparator Circuit Turns Off the LTM8052/LTM8052A
if the Input Rises Above a Predetermined Threshold. When the
LTM8052/LTM8052A Turns Off, the Energy Stored in the Internal
Inductor Will Raise V IN a Small Amount Above the Threshold.
19
For more information www.linear.com/LTM8052
8052fc
相关PDF资料
PDF描述
TRME336M035R0050 CAP TANT 33UF 35V 20% 2917
VE-JWM-CW-B1 CONVERTER MOD DC/DC 10V 100W
TLE4270D IC REG LDO 5V .55A DPAK-5
LTC4221CGN#PBF IC CTLR HOT SWAP DUAL 16SSOP
7-1734857-5 PCI EXP STRADDLE 98P BLK 30U"
相关代理商/技术参数
参数描述
LTM8052EV#PBF 功能描述:IC DC/DC UMODULE BUCK 5A 81LGA 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:*
LTM8052IV#PBF 功能描述:IC UMODULE CVCC STEP DOWN 81LGA 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):55V 电压 - 输入(最大):100V Voltage - Output 1:5.8V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出(最大):* 电源(瓦) - 制造商系列:100W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9 针半砖 BusMod 尺寸/尺寸:2.36" L x 2.28" W x 1.08" H(59.9mm x 57.9mm x 27.4mm) 包装:散装 工作温度:-25°C ~ 100°C 效率:* 电源(瓦特)- 最大:*
LTM8061 制造商:LINER 制造商全称:Linear Technology 功能描述:32V, 2A μModule Li-Ion/ Polymer Battery Charger
LTM8061EV-4.1#PBF 功能描述:IC BATTERY CHARGER 4.1V 77-LGA RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:µModule® 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料,电量检测计/监控器 电池化学:锂离子(Li-Ion) 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP,8-MSOP(0.118",3.00mm 宽) 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2
LTM8061EV-4.1PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:32V, 2A μModule Li-Ion/ Polymer Battery Charger