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參數(shù)資料
| 型號： | UPD16855BG |
| 廠商： | NEC Corp. |
| 英文描述： | DUAL HIGH-SIDE SWITCH FOR USB APPLICATION |
| 中文描述： | 雙高邊開關(guān)的USB應(yīng)用 |
| 文件頁數(shù)： | 10/28頁 |
| 文件大?。?/td> | 134K |
| 代理商： | UPD16855BG |
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Data Sheet S13020EJ1V0DS00
10
μ
PD16855
FUNCTION DESCRIPTION
1. Over current detection
The specification of over current detect is 0.6 to 1.25 A (typ. 900mA) in this IC. (500 mA max. in USB standard)
This function is that flag-pin turns to Low-level and reports to the USB controller when over current is detected.
At this time, output of IC is operated as followed.
μ
PD16855A/B :
Output keep ON-state and over current limited circuit is operated. This function can be
prevented from being long-time over current state.
μ
PD16855C/D : Output turns to off, and isn't based on the state of CTL-pin.
When CTL-pin turns to non-active, FLG-pin returns to High-level and Output-pin turn to OFF-state.
Immediately the controller should be inputted non-active level to CTL-pin after detecting FLG = “L” not to reach to
the state of thermal shutdown.
Then, in the case of FLG-pin is High-level and CTL-pin is active level, Output-pin turns to ON-state.
To prevent from detecting wrongly the current to the moment, over current detect delay time is set up.
This delay time is 10
μ
s (typ.).
Power consumption in this device increases rapidly at the time of current-limitter circuit operation, and channel
temperature Tch is likely to escalate. Make a CTL signal non-active, and make switch turn off before Tch of this
device exceed absolute maximum rating.
Flg
Normal Mode
more than 10 s (typ.)
Over current detect threshold
in case of current surge
less then 10 s (typ.)
Controlled by CTL-pin ( PD16855A/B)
PD16855
μ
USB Device
Instant Switch off ( PD16855C/D)
Vout
Iout
Flg
IN
+
OUT
connection to the
moment, it flow
the large current
Iout
0 V
0 V
1 A~
0.5 A
0 A
5 V
5 V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD16855DG | DUAL HIGH-SIDE SWITCH FOR USB APPLICATION |
| UPD16856 | MONOLITHIC CD-ROM 3-PHASE SPINDLE MOTOR DRIVER |
| UPD16856GS | MONOLITHIC CD-ROM 3-PHASE SPINDLE MOTOR DRIVER |
| UPD16857 | MONOLITHIC 6 channel H-BRIDGE DRIVER |
| UPD16878GS-BGG | MONOLITHIC QUAD H BRIDGE DRIVER CIRCUIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD16855C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UPD16855A/B/C/D Data Sheet | Data Sheet[02/1999] |
| UPD16855CG | 制造商:NEC 制造商全稱:NEC 功能描述:DUAL HIGH-SIDE SWITCH FOR USB APPLICATION |
| UPD16855D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UPD16855A/B/C/D Data Sheet | Data Sheet[02/1999] |
| UPD16855DG | 制造商:NEC 制造商全稱:NEC 功能描述:DUAL HIGH-SIDE SWITCH FOR USB APPLICATION |
| UPD16856 | 制造商:NEC 制造商全稱:NEC 功能描述:MONOLITHIC CD-ROM 3-PHASE SPINDLE MOTOR DRIVER |
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