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参数资料
| 型号： | DC1453A |
| 厂商： | Linear Technology |
| 文件页数： | 8/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LTM4619 |
| 软件下载： | LTM4619 Spice Model |
| 设计资源： | DC1453A Design Files DC1453A Schematic |
| 标准包装： | 1 |
| 系列： | LTM®, uModule® |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 1.8V，3.3V |
| 电流 - 输出： | 4A |
| 输入电压： | 4.5 ~ 28 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 500kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LTM4619 |
| 相关产品： | LTM4619IV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA LTM4619EV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA |
LTM4619
OPERATION
The LTM4619 is a dual-output standalone non-isolated
switching mode DC/DC power supply. It can deliver up to
4A (DC current) for each output with few external input and
output capacitors. This module provides precisely regulated
output voltages programmable via external resistors from
0.8VDC to 5.0VDC over 4.5V to 26.5V input voltages. The
typical application schematic is shown in Figure 18.
The LTM4619 has integrated constant frequency current
mode regulators and built-in power MOSFET devices with
fast switching speed. The typical switching frequency is
780kHz. To reduce switching noise, the two outputs are
interleaved with 180° phase internally and can be synchro-
nized externally using the MODE/PLLIN pin.
With current mode control and internal feedback loop
compensation, the LTM4619 module has sufficient stabil-
ity margins and good transient performance with a wide
range of output capacitors, even with all ceramic output
capacitors.
Current mode control provides cycle-by-cycle fast current
limit and current foldback in a short-circuit condition.
Internal overvoltage and undervoltage comparators pull
the open-drain PGOOD output low if the output feedback
voltage exits a ±7.5% window around the regulation point.
The power good pin is disabled during start-up.
Pulling the RUN pin below 1.2V forces the controller into
its shutdown state, by turning off both MOSFETs. The
TK/SS pin is used for programming the output voltage
ramp and voltage tracking during start-up. See the Ap-
plications Information section.
The LTM4619 is internally compensated to be stable over
all operating conditions. LTpowerCAD? is available for
transient and stability analysis. The V FB pin is used to
program the output voltage with a single external resistor
to ground. Multiphase operation can be easily employed
with the synchronization.
High efficiency at light loads can be accomplished with
selectable Burst Mode operation or pulse-skipping mode
using the MODE/PLLIN pin. Efficiency graphs are provided
for light load operations in the Typical Performance Char-
acteristics section.
4619fb
8
For more information www.linear.com/LTM4619
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1459A | 功能描述:BOARD EVALUATION FOR LTC3588 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| DC1459B-A | 制造商:Linear Technology 功能描述:ENERY HARVESTING EVAL. BOARD 制造商:Linear Technology 功能描述:LTC3588, ENERGY HARVESTING PWR SUPPLY, DEMO BOARD; Silicon Manufacturer:Linear Technology; Kit Application Type:Power Management; Application Sub Type:Energy Harvesting; Kit Contents:Board |
| DC1459B-B | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC3588 ENERGY HARVESTING PO 制造商:Linear Technology 功能描述:EVAL BOARD, LTC3588 ENERGY HARVESTING POWER SUPPLY; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC3588; Kit Application Type:Power Management; Application Sub Type:Energy Harvesting; Kit Contents:Board, Guide |
| DC1460A | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC3620 BUCK REGULATOR, Silicon Manufacturer:Linear Technology, Sili |
| DC1466A-A | 功能描述:BOARD DAC LTC2636-12 RoHS:是 类别:编程器，开发系统 >> 评估板 - 数模转换器 (DAC) 系列:QuikEval™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率（每秒）:- 数据接口:串行，SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
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