收藏本站
LTM4600
OPERATION
μModule Description
The LTM4600 is a standalone non-isolated synchronous
switching DC/DC power supply. It can deliver up to 10A of
DC output current with only bulk external input and output
capacitors. This module provides a precisely regulated
output voltage programmable via one external resistor from
0.6V DC to 5.0V DC , not to exceed 80% of the input voltage.
The input voltage range is 4.5V to 20V. A simpli?ed block
diagram is shown in Figure 1 and the typical application
schematic is shown in Figure 18.
The LTM4600 contains an integrated LTC constant on-time
current-mode regulator, ultra-low R DS(ON) FETs with fast
switching speed and integrated Schottky diode. The typical
switching frequency is 850kHz at full load. With current
mode control and internal feedback loop compensation,
the LTM4600 module has suf?cient stability margins and
good transient performance under a wide range of operat-
ing conditions and with a wide range of output capacitors,
even all ceramic output capacitors (X5R or X7R).
Current mode control provides cycle-by-cycle fast current
limit. In addition, foldback current limiting is provided in
an over-current condition while V OSET drops. Also, the
LTM4600 has defeatable short circuit latch off. Internal
overvoltage and undervoltage comparators pull the open-
drain PGOOD output low if the output feedback voltage exits
a ±10% window around the regulation point. Furthermore,
in an overvoltage condition, internal top FET Q1 is turned
off and bottom FET Q2 is turned on and held on until the
overvoltage condition clears.
Pulling the RUN/SS pin low forces the controller into its
shutdown state, turning off both Q1 and Q2. Releasing
the pin allows an internal 1.2μA current source to charge
up the softstart capacitor. When this voltage reaches 1.5V,
the controller turns on and begins switching.
At low load current the module works in continuous cur-
rent mode by default to achieve minimum output voltage
ripple. It can be programmed to operate in discontinuous
current mode for improved light load ef?ciency when the
FCB pin is pulled up above 0.8V and no higher than 6V.
The FCB pin has a 4.75k resistor to ground, so a resistor
to V IN can set the voltage on the FCB pin.
When EXTV CC pin is grounded or open, an integrated 5V
linear regulator powers the controller and MOSFET gate
drivers. If a minimum 4.7V external bias supply is ap-
plied on the EXTV CC pin, the internal regulator is turned
off, and an internal switch connects EXTV CC to the gate
driver voltage. This eliminates the linear regulator power
loss with high input voltage, reducing the thermal stress
on the controller. The maximum voltage on EXTV CC pin is
6V. The EXTV CC voltage should never be higher than the
V IN voltage. Also EXTV CC must be sequenced after V IN .
4600fc
8
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
LTM4601AHVEV#PBF IC DC/DC UMODULE 12A 133-LGA
LTM4601AIY#PBF IC DC/DC UMODULE 12A 133-BGA
LTM4602IV#PBF IC DC/DC UMODULE 6A 104-LGA
LTM4603HVEV#PBF IC DC/DC UMODULE 6A 118-LGA
LTM4603IV#PBF IC DC/DC UMODULE 6A 118-LGA
LTM4604AIV#PBF IC UMODULE DC/DC LV 4A 66-LGA
LTM4604IV#PBF IC DC/DC UMODULE 4A 66-LGA
LTM4605EV#PBF IC DC/DC UMODULE 5A 141-LGA
相关代理商/技术参数
LTM4600IVPBF 制造商:Linear Technology 功能描述:DC/DC Regulator 10A 0.6-5Vout 20Vin
LTM4601 制造商:LINER 制造商全称:Linear Technology 功能描述:Low VIN, 8A DC/DC μModule Regulator
LTM4601/ 制造商:LINER 制造商全称:Linear Technology 功能描述:Low VIN, 8A DC/DC ??Module Regulator
LTM4601_12 制造商:LINER 制造商全称:Linear Technology 功能描述:LTM4601_12
LTM4601-1 制造商:LINER 制造商全称:Linear Technology 功能描述:12A DC/DC μModules with PLL, Output Tracking and Margining
LTM4601A 制造商:LINER 制造商全称:Linear Technology 功能描述:12A DC/DC μModules with PLL, Output Tracking and Margining
LTM4601A-1 制造商:LINER 制造商全称:Linear Technology 功能描述:12A DC/DC μModules with PLL, Output Tracking and Margining
LTM4601AEV#PBF 功能描述:IC DC/DC UMODULE 12A 133-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:*