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參數資料
| 型號： | NCP346SN1T1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | Overvoltage Protection IC |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | LEAD FREE, TSOT-23, 5 PIN |
| 文件頁數： | 1/15頁 |
| 文件大小： | 386K |
| 代理商： | NCP346SN1T1G |
Semiconductor Components Industries, LLC, 2004
December, 2004
Rev. 4
1
Publication Order Number:
NCP346/D
NCP346
Overvoltage Protection IC
The NCP346 Overvoltage Protection circuit (OVP) protects
sensitive electronic circuitry from overvoltage transients and power
supply faults when used in conjunction with an external P
channel
FET. The device is designed to sense an overvoltage condition and
quickly disconnect the input voltage supply from the load before any
damage can occur. The OVP consists of a precise voltage reference, a
comparator with hysteresis, control logic, and a MOSFET gate driver.
The OVP is designed on a robust BiCMOS process and is intended to
withstand voltage transients up to 30 V.
The device is optimized for applications that have an external
AC/DC adapter or car accessory charger to power the product and/or
recharge the internal batteries. The nominal overvoltage thresholds are
4.45 and 5.5 V and can be adjusted upward with a resistor divider
between the V
CC
, IN, and GND pins. It is suitable for single cell
Li
Ion applications as well as 3/4 cell NiCD/NiMH applications.
Features
Overvoltage Turn
Off Time of Less Than 1.0 sec
Accurate Voltage Threshold of 4.45 V and 5.5 V (Nominal)
CNTRL Input Compatible with 1.8 V Logic Levels
These are Pb
Free Devices
Typical Applications
Cellular Phones
Digital Cameras
Portable Computers and PDAs
Portable CD and other Consumer Electronics
+
OUT
IN
V
ref
GND
CNTRL
+
V
CC
Logic
FET
Driver
LOAD
AC/DC Adapter or
Accessory Charger
C1
Schottky
Diode
Microprocessor port
P
CH
Figure 1. Simplified Application Diagram
NCP346
Note: This device contains 89 active transistors
(optional)
(optional)
THIN SOT
23
5
SN SUFFIX
CASE 483
PIN CONNECTIONS &
MARKING DIAGRAM
1
3
IN
OUT
2
GND
CNTRL
4
V
CC
5
(Top View)
xxx = SQZ for NCP346SN1
xxx = SRD for NCP346SN2
Y
= Year
W
= Work Week
Device
Package
Shipping
ORDERING INFORMATION
NCP346SN1T1G SOT
23
5
(Pb
Free)
3000 / Tape & Reel
(7 inch Reel)
x
NCP346SN2T1G
1
5
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
http://onsemi.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP346SN2T1G | 功能描述:監控電路 5.5V Overvoltage Supervisor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| NCP347AE AV51D WAF | 制造商:ON Semiconductor 功能描述: |
| NCP347AI BB58A WAF | 制造商:ON Semiconductor 功能描述: |
| NCP347MTAETBG | 功能描述:電池管理 OVER VLTG PROTECTION RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| NCP347MTAFTBG | 功能描述:電池管理 OVER VLTG PROTECTION RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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