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參數資料
| 型號： | PM6685TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, VFQFPN-32 |
| 文件頁數： | 1/52頁 |
| 文件大小： | 2536K |
| 代理商： | PM6685TR |
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October 2007
Rev 7
1/52
52
PM6685
Dual step-down main supply controller
with auxilary voltages for notebook system power
Features
■ 6V to 28V input voltage range
■ Fixed 5V - 3.3V output voltages
■ 5V and 3.3V voltage always available to deliver
100mA of peak current
■ 1.237V ±1% reference voltage available
■ Lossless current sensing using low side
■ MOSFETs' RDS(on)
■ Negative current limit
■ Soft-start internally fixed at 2ms
■ Soft output discharge
■ Latched OVP and UVP
■ Selectable pulse skipping at light loads
■ Selectable minimum frequency (33kHz) in
pulse skip mode
■ 4mW maximum quiescent power
■ Independent power good signals
■ Output voltage ripple compensation
Applications
■ Notebook computers
■ Tablet PC or slates
■ Mobile system power supply
■ 3 and -4 Cells Li+ battery-powered devices
Description
PM6685 is a dual step-down controller specifically
designed to provide extremely high efficiency
conversion with loss-less current sensing
technique. The constant on-time 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. The pulse skipping technique
increases efficiency for very light loads. Moreover,
a minimum switching frequency of 33kHz is
selectable in order 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.
VFQFPN-32 (5mm x 5mm)
Table 1.
Device summary
Order code
Package
Packaging
PM6685
VFQFPN-32 (5mm x 5mm)
Tube
PM6685TR
VFQFPN-32 (5mm x 5mm)
Tape and Reel
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PM6686 | 制造商:STMicroelectronics 功能描述: |
| PM6686TR | 功能描述:DC/DC 開關控制器 Step-down Controller w/adj. voltages-dual RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 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 產品:Junction Box - Wire to Wire 系列:9826 線規:26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點電鍍:Tin over Nickel 觸點材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp |
| PM6-6R-D | 制造商:Panduit Corp 功能描述: |
| PM6-6R-L | 功能描述:端子 Metric Ring Terminal non-insulated, 2.5 RoHS:否 制造商:AVX 產品:Junction Box - Wire to Wire 系列:9826 線規:26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點電鍍:Tin over Nickel 觸點材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp |
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