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參數(shù)資料
| 型號： | PM6685 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DUAL STEP-DOWN CONTROLLER WITH AUXILARY VOLTAGES FOR NOTEBOOK SYSTEM POWER |
| 中文描述： | 雙通道降壓控制器，紡織印染助劑用于筆記本系統(tǒng)的電源電壓 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 889K |
| 代理商： | PM6685 |
Preliminary Data
This is preliminary information on a new product now in development or undergoing evaluation.
Details are subject to change without notice.
Rev 1
1/16
September 2005
16
PM6685
DUAL STEP-DOWN CONTROLLER WITH AUXILARY VOLTAGES
FOR NOTEBOOK SYSTEM POWER
Features
■
CONSTANT ON TIME TOPOLOGY ALLOWS
VERY FAST LOAD TRANSIENTS
■
6V TO 28V INPUT VOLTAGE RANGE
■
FIXED 5V-3.3V OUTPUT VOLTAGES
■
5V AND 3.3V ALWAYS VOLTAGES
AVAILABLE DELIVER 100mA PEAK
CURRENT
■
1.23V
±
1% REFERENCE VOLTAGE
AVAILABLE
■
NO R
SENSE
CURRENT SENSING USING
LOW SIDE MOSFETs’ R
DS(on)
■
ACCURATE CURRENT SENSE WITH
R
SENSE
■
NEGATIVE CURRENT LIMIT
■
SOFT START INTERNALLY FIXED AT 2ms
■
SOFT OFF FOR OUTPUT DISCHARGE
■
LATCHED OVP AND UVP
■
SELECTABLE PULSE SKIPPING AT LIGHT
LOADS
■
SELECTABLE MINIMUM FREQUECY
(25kHz) IN PULSE SKIP MODE
■
4 mW MAXIMUM QUIESCENT POWER
■
INDIPENDENT POWER GOOD SIGNALs
■
OUTPUT VOLTAGE RIPPLE
COMPENSATION
Description
PM6685
specifically designed to provide extremely high
efficiency conversion, with lossless current
sensing
technique.
The
architecture assures fast load transient response
and the embedded voltage feed-forward provides
nearly constant switching frequency operation. An
embedded integrator control loop compensates
the DC voltage error due to the output ripple.
Pulse skipping technique increases efficiency at
very light load. Moreover a minimum switching
frequency of 25kHz is selectable to avoid audio
noise issues. The PM6685 provides a selectable
switching frequency, allowing either 200kHz/
300kHz, 300kHz/400Khz or 400kHz/500kHz
operation of the 5V/3.3V switching sections...
is
a
dual
step-down
controller
constant
on-time
Applications
■
NOTEBOOK COMPUTERS
■
TABLET PC OR SLATES
■
MOBILE SYSTEM POWER SUPPLY
■
3-4 CELLS Li+ BATTERY POWERED
DEVICES
VFQFPN-32 5X5
Order codes Part number
Marking
Package
Packing
PM6685
PM6685
VFQFPN-32 5X5
TAPE & REEL
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PM6685_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual step-down main supply controller with auxilary voltages for notebook system power |
| PM6685TR | 功能描述:DC/DC 開關(guān)控制器 Monolithic VR 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(fēng)格: 封裝 / 箱體:CPAK |
| PM6686 | 制造商:STMicroelectronics 功能描述: |
| PM6686TR | 功能描述:DC/DC 開關(guān)控制器 Step-down Controller w/adj. voltages-dual 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(fēng)格: 封裝 / 箱體:CPAK |
| PM6-6F-L | 功能描述:端子 Metric Fork Terminal non-insulated, 4.0 RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp |
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