收藏本站
LTM4606
APPLICATIONS INFORMATION
V OUT(MARGIN) =
? V OUT
R PGM =
V OUT 1.18V
The typical LTM4606 application circuit is shown in Fig-
ure 20. External component selection is primarily deter-
mined by the maximum load current and output voltage.
Refer to Table 2 for specific external capacitor requirements
for a particular application.
V IN to V OUT Step-Down Ratios
Under the default frequency, there are restrictions in
the maximum V IN and V OUT step-down ratio that can be
achieved for a given input voltage. These constraints are
caused by the limitation of the minimum on and off time in
the internal switches. Refer to the Frequency Adjustment
section to change the switching frequency and get wider
input and output ranges. See the Thermal Considerations
and Output Current Derating section in this data sheet for
the current restrictions.
Output Voltage Programming and Margining
R PGM resistor on the MPGM pin programs the current.
Calculate V OUT(MARGIN) :
%V OUT
100
where %V OUT is the percentage of V OUT you want to
margin, and V OUT(MARGIN) is the margin quantity in volts:
? ? 10k
0.6V V OUT(MARGIN)
where R PGM is the resistor value to place on the MPGM
pin to ground.
The margining voltage, V OUT(MARGIN) , will be added or
subtracted from the nominal output voltage as determined
by the state of the MARG0 and MARG1 pins. See the truth
table below:
The PWM controller has an internal 0.6V reference voltage.
As shown in the Block Diagram, a 60.4k internal feedback
resistor connects the V OUT and V FB pins together. Adding
a resistor R FB from the V FB pin to the SGND pin programs
the output voltage:
MARG1
LOW
LOW
HIGH
HIGH
MARG0
LOW
HIGH
LOW
HIGH
MODE
NO MARGIN
MARGIN UP
MARGIN DOWN
NO MARGIN
V OUT = 0.6V
60.4k + R FB
=
R FB
V OUT
0.6V
R FB
(kΩ)
V OUT
(V)
or equivalently,
R FB
60.4k
–1
Table 1 . R FB Standard 1% Resistor Values v s V OUT
Open 60.4 40.2 30.1 25.5 19.1
0.6 1.2 1.5 1.8 2 2.5
13.3
3.3
8.25
5
Input Capacitors and Input EMI Noise Attenuation
The LTM4606 is designed to achieve low input conducted
EMI noise due to the fast switching of turn-on and turn-off.
In the LTM4606, a high frequency inductor is integrated
to the input line for noise attenuation. V D and V IN pins
are available for external input capacitors to form a high
frequency π filter. As shown in Figure 19, the ceramic
capacitor C1 on the V D pins is used to handle most of
the RMS current into the converter, so careful attention
is needed for capacitor C1 selection.
V OUT
The MPGM pin programs a current that when multiplied
by an internal 10k resistor sets up the 0.6V reference ±
offset for margining. A 1.18V reference divided by the
For a buck converter, the switching duty cycle can be
estimated as:
D =
V IN
4606fd
For more information www.linear.com/LTM4606
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
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
LTM4614IV#PBF IC UMODULE DC/DC DUAL 4A 144LGA
LTM4615IV#PBF IC SWIT REG BUCK 4A ADJ 144LGA
相关代理商/技术参数
LTM4606MPV-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Ultralow EMI 28VIN, 6A DC/DC μModule
LTM4606V 制造商:LIN 功能描述:MODULE 133-LGA LINEAR, 0843
LTM4607 制造商:LINER 制造商全称:Linear Technology 功能描述:High Effi ciency, Synchronous, 4-Switch Buck-Boost Controller
LTM4607EV#PBF 功能描述:IC BUCK/BOOST SYNC ADJ 5A 141LGA 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:*
LTM4607EV#PBF 制造商:Linear Technology 功能描述:DC/DC Converter IC
LTM4607EVPBF 制造商:Linear Technology 功能描述:Conv DC-DC Step Up Step Down
LTM4607EV-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:36VIN, 24VOUT High Effi ciency Buck-Boost DC/DC μModule
LTM4607IV#PBF 功能描述:IC BUCK/BOOST SYNC ADJ 5A 141LGA 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:*