收藏本站
LTM4604A
APPLICATIONS INFORMATION
+ R FB
= 0.8V ?
V OUT
pinmustgobeyond0.8Vtoensuretheslaveoutputhas
reached its final value. Load current must be present for
proper tracking.
Ratiometric 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 ratiometric tracking to work. LTspice ? 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 tracking down.
Power Good
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 COMP pin is the external compensation pin. The
LTM4604A has already been internally compensated for
all output voltages. Table 4 is provided for most applica-
tion requirements. The LTpowerCAD GUI is available for
other control loop optimizations.
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
Parallel Operation
The LTM4604A device is an inherently current mode
controlled device. Parallel modules will have very good
current sharing. This will balance the thermals on the de-
sign. Figure 16 shows a schematic of the parallel design.
The voltage feedback changes with the variable N as more
modules are paralleled. The equation:
4.99k
N
R FB
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 airflow 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 flow. 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
0.2
0
0
1
2
3
5V TO 1.2V
POWER LOSS
3.3V TO 1.2V
POWER LOSS
4
5
0.4
0.2
0
0
1
2 3
5V TO 2.5V
POWER LOSS
3.3V TO 2.5V
POWER LOSS
4
5
LOAD CURRENT (A)
4604A F04
Figure 4. 1.2V Power Loss
LOAD CURRENT (A)
4604A F05
Figure 5. 2.5V Power Loss
12
For more information www.linear.com/LTM4604A
4604afa
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
LTM4604IV#PBF IC DC/DC UMODULE 4A 66-LGA
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
相关代理商/技术参数
LTM4604AIV#PBF 制造商:Linear Technology 功能描述:DC/DC MODULE IC
LTM4604AIVPBF 制造商:Linear Technology 功能描述:DC/DC Regulator 4A 2.375-5.5V Tracking
LTM4604AIV-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Voltage, 4A DC/DC μModule with Tracking
LTM4604EV#PBF 功能描述:IC DC/DC UMODULE 4A 66-LGA 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
LTM4604EV#PBF 制造商:Linear Technology 功能描述:DC/DC ?Module IC 制造商:Linear Technology 功能描述:IC SWITCH MODE DC/DC POWER SUPPLY LGA-66
LTM4604EV-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Voltage, 4A DC/DC μModuleTM with Tracking
LTM4604EVPBF-ES 制造商:Linear Technology 功能描述:4A 3.3V DCDC uModule LTM4604
LTM4604IV#PBF 功能描述:IC DC/DC UMODULE 4A 66-LGA 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