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參數(shù)資料
型號(hào)： PM6675ATR
廠(chǎng)商： STMICROELECTRONICS
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, QCC24
封裝： 4 X 4 MM, VFQFPN-24
文件頁(yè)數(shù)： 1/50頁(yè)
文件大小： 782K
代理商： PM6675ATR
Preliminary Data
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
January 2007
Rev 1
1/47
47
PM6675
High efficiency step-down controller
with embedded 2A LDO regulator
Features switching
■ Switching section
– 4.5V to 28V input voltage range
– 0.6V, ±1% voltage reference
– Selectable 1.5V fixed output voltage
– Adjustable 0.6V to 3.3V output voltage
– 1.237V ±1% reference voltage available
– Very fast load transient response using
constant on-time control loop
–No RSENSE current sensing using low side
MOSFETs' RDS(ON)
– Negative current limit
– Latched OVP and UVP
– Soft start internally fixed at 3ms
– Selectable pulse skipping at light load
– Selectable No-Audible (33KHz) pulse skip
mode
– Ceramic output capacitors supported
– Output voltage ripple compensation
– Output soft-end
■ LDO regulator section
– Adjustable 0.6V to 3.3V output voltage
– Selectable ±1Apk or ±2Apk current limit
– Dedicated Power-Good signal
– Ceramic output capacitors supported
– Output soft-end
Applications
■ Notebook computers
■ Graphic cards
■ Embedded computers
Description
The PM6675 device consists of a single high
efficiency step-down controller and an
independent Low Drop-Out (LDO) linear
regulator.
The Constant On-Time (COT) architecture
assures fast transient response supporting both
electrolytic and ceramic output capacitors. An
embedded integrator control loop compensates
the DC voltage error due to the output ripple.
A selectable low-consumption mode allows the
highest efficiency over a wide range of load
conditions. The low-noise mode sets the minimum
switching frequency to 33kHz for audio-sensitive
applications.
The LDO linear regulator can sink and source up
to 2Apk. Two fixed current limits (±1A-±2A) can be
chosen.
An active Soft-End is independently performed on
both the switching and the linear regulators
outputs when disabled.
VFQFPN-24 4x4
Order codes
Part number
Package
Packaging
PM6675
VFQFPN-24 4x4 (Exposed Pad)
Tube
相關(guān)PDF資料
PDF描述
PM6675TR SWITCHING CONTROLLER, QCC24
PM6675 SWITCHING CONTROLLER, QCC24
PM6680ATR 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
PM6680A 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
PM6680TR 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM6675S 功能描述:DC/DC 開(kāi)關(guān)控制器 DDR 2/3 Memory Pwr Cntrl RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
PM6675STR 功能描述:低壓差控制器 - LDO Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類(lèi)型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6
PM6675TR 功能描述:低壓差控制器 - LDO High eff SD CNRL RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類(lèi)型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6
PM6680 功能描述:DC/DC 開(kāi)關(guān)控制器 No Rsense dual StepDwn Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
PM6680_08 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:No Rsense dual step-down controller with adjustable voltages for notebook system power
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