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| 型号： | PM6675S |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, QCC24 |
| 封装： | 4 X 4 MM, LEAD FREE, VFQFPN-24 |
| 文件页数： | 11/53页 |
| 文件大小： | 2632K |
| 代理商： | PM6675S |
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PM6675S
Device description
19/53
7
Device description
The PM6675S combines a single high efficiency step-down controller and an independent
Low Drop-Out (LDO) linear regulator in the same package.
The switching controller section is a high-performance, pseudo-fixed frequency, Constant-
On-Time (COT) based regulator specifically designed for handling fast load transient over a
wide range of input voltages.
The switching section output can be easily set to a fixed 1.5 V voltage without additional
components or adjusted in the 0.6 V to 3.3 V range using an external resistor divider. The
Switching Mode Power Supply (SMPS) can handle different modes of operation in order to
minimize noise or power consumption, depending on the application needs. Selectable low-
consumption and low-noise modes allow the highest efficiency and a 33 kHz minimum
switching frequency respectively at light loads.
A lossless current sensing scheme, based on the Low-Side MOSFET turn-on resistance,
avoids the need for an external sensing resistor.
The input of the LDO can be either the switching section output or a lower voltage rail in
order to reduce the total power dissipation. Linear regulator stability is achieved by filtering
its output with a ceramic capacitor (20
F or greater). The LDO linear regulator can sink and
source up to 2 Apk.
Two fixed current limit (±1 A-±2 A) can be chosen.
An active soft-end is independently performed on both the switching and the linear
regulators outputs when disabled.
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PM6675STR | 功能描述:低压差控制器 - LDO Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| PM6675TR | 功能描述:低压差控制器 - LDO High eff SD CNRL RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| PM6680 | 功能描述:DC/DC 开关控制器 No Rsense dual StepDwn Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| PM6680_08 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:No Rsense dual step-down controller with adjustable voltages for notebook system power |
| PM6680A | 功能描述:DC/DC 开关控制器 Dual sync controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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