收藏本站
LTM4604
APPLICATIONS INFORMATION
Ratio metric modes of tracking can be achieved by selecting
different resistor values to change the output tracking ratio.
The master output must be greater than the slave output
for the tracking to work. Linear Technology Tracker Cad26
can be used to implement different tracking scenarios. The
Master and Slave data inputs can be used to implement
the correct resistor values for coincident or ratio tracking.
The master and slave regulators require load current for
Parallel Operation
The LTM4604 device is an inherently current mode con-
trolled device. Parallel modules will have very good current
sharing. This will balance the thermals on the design.
Figure 16 shows a schematic of the parallel design. The
voltage feedback changes with the variable N as more
modules are paralleled. The equation:
+ R FB
tracking down.
Power Good
V OUT
= 0 . 8 V ?
4.99k
N
R FB
The PGOOD pin is an open-drain pin that can be used to
monitor valid output voltage regulation. This pin monitors
a ±7.5% window around the regulation point.
COMP Pin
The pin is the external compensation pin. The module
has already been internally compensated for all output
voltages. Table 4 is provided for most application require-
ments. A spice model will be provided for other control
loop optimizations.
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
N is the number of paralleled modules.
Thermal Considerations and Output Current Derating
The power loss curves in Figures 4 and 5 can be used in
coordination with the load derating curves in Figures 6
through 13 for calculating an approximate θ JA for the
module with and without heat sinking methods with vari-
ous air?ow conditions. Thermal models are derived from
several temperature measurements at the bench, and are
correlated with thermal analysis software. Tables 2 and 3
provide a summary of the equivalent θ JA for the noted
conditions. These equivalent θ JA parameters are correlated
to the measured values and improve with air ?ow. The
maximum junction temperature is monitored while the
derating curves are derived.
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
5V TO 1.2V
POWER LOSS
0.4
5V TO 2.5V
POWER LOSS
0.2
0
0
1
2
3
3.3V TO 1.2V
POWER LOSS
4
5
0.2
0
0
1
2 3
3.3V TO 2.5V
POWER LOSS
4
5
LOAD CURRENT (A)
4604 F04
Figure 4. 1.2V Power Loss
LOAD CURRENT (A)
4604 F05
Figure 5. 2.5V Power Loss
4604fa
11
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
LTM4605EV#PBF IC DC/DC UMODULE 5A 141-LGA
LTM4606MPV#PBF IC DC/DC UMODULE 6A 133-LGA
LTM4607IV#PBF IC BUCK/BOOST SYNC ADJ 5A 141LGA
LTM4608AEV#PBF IC BUCK SYNC ADJ 8A 68LGA
LTM4608IV#PBF IC DC/DC UMODULE 8A 68-LGA
LTM4609IV#PBF IC BUCK/BOOST SYNC ADJ 4A 141LGA
LTM4612IV#PBF IC BUCK SYNC ADJ 5A 133LGA
LTM4613MPV#PBF IC UMODULE DC/DC 8A 133-LGA
相关代理商/技术参数
LTM4604IV#PBF 制造商:Linear Technology 功能描述:IC SWITCH MODE DC/DC POWER SUPPLY LGA-66
LTM4604IVPBF 制造商:Linear Technology 功能描述:Conv DC-DC Single-Out Step Down
LTM4604IV-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Voltage, 4A DC/DC μModuleTM with Tracking
LTM4604V 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Voltage, 4A DC/DC μModuleTM with Tracking
LTM4605 制造商:LINER 制造商全称:Linear Technology 功能描述:High Effi ciency Buck-Boost DC/DC μModule
LTM4605EV#PBF 功能描述:IC DC/DC UMODULE 5A 141-LGA 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:*
LTM4605EV#PBF 制造商:Linear Technology 功能描述:IC SMPS CONTROLLER CURRENT-MODE LGA
LTM4605EVPBF 制造商:Linear Technology 功能描述:Conv DC-DC Step Up Step Down