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參數(shù)資料
| 型號： | PM6675S |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, QCC24 |
| 封裝： | 4 X 4 MM, LEAD FREE, VFQFPN-24 |
| 文件頁數(shù)： | 1/53頁 |
| 文件大?。?/td> | 2632K |
| 代理商： | PM6675S |
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February 2008
Rev 1
1/53
PM6675S
High efficiency step-down controller
with embedded 2 A LDO regulator
Features
■ Switching section
– 4.5 V to 28 V input voltage range
– 0.6 V, ±1 % voltage reference
– Selectable 1.5 V fixed output voltage
– Adjustable 0.6 V to 3.3 V output voltage
– 1.237 V ±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 3 ms
– Selectable pulse skipping at light load
– Selectable No-Audible (33 kHz) pulse skip
mode
– Ceramic output capacitors supported
– Output voltage ripple compensation
– Output soft-end
■ LDO regulator section
– Adjustable 0.6 V to 3.3 V output voltage
– Selectable ±1 Apk or ±2 Apk current limit
– Dedicated power-good signal
– Ceramic output capacitors supported
– Output soft-end
Applications
■ Notebook computers
■ Graphic cards
■ Embedded computers
Description
The PM6675S 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 33 kHz for audio-sensitive
applications.
The LDO linear regulator can sink and source up
to 2 Apk. Two fixed current limits (±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.
VFQFPN-24 4x4
Table 1.
Device summary
Order codes
Package
Packaging
PM6675S
VFQFPN-24 4x4 (exposed pad)
Tube
PM6675STR
Tape and reel
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 負載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: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 負載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-6 |
| PM6680 | 功能描述:DC/DC 開關(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 安裝風格: 封裝 / 箱體:CPAK |
| PM6680_08 | 制造商:STMICROELECTRONICS 制造商全稱: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 開關(guān)控制器 Dual sync controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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 安裝風格: 封裝 / 箱體:CPAK |
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