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參數(shù)資料
| 型號(hào)： | SP6122ACU-15 |
| 英文描述： | Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
| 中文描述： | 低電壓，微8，PFET的，降壓控制器適合第1A至5A，占地面積小，DC - DC電源轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 4/19頁(yè) |
| 文件大小： | 174K |
| 代理商： | SP6122ACU-15 |
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4
Date: 10/02/04
SP6122 Low Voltage, Micro 8, PFET, Buck Controller Copyright 2004 Sipex Corporation
PIN DESCRIPTION
PIN #
1
PIN NAME
V
CC
DESCRIPTION
Main Supply Pin: A RC filter as shown in the application circuit is
recommended. The decoupling capacitor needs to be close to the pin.
Fault Flag Pull-down Pin: Sinks current during a fault condition. Can
be hooked up to ENABLE to initiate Hiccup Timing.
Regulated Output Voltage: This voltage is divided internally and
compared to a 1.5%, 1.25V reference at the PFM comparator.
Enable Input: Floating this pin or pulling above 1.45V enables the
part. Pulling this pin to less than 0.9V will disable the part. A minimum
100pF capacitor is required between this pin and Ground to ensure
proper startup. If FFLAG is hooked to ENABLE, the capacitor on
ENABLE will control hiccup timing.
Negative Input to the Over Current Amplifier/Comparator: This input
is subtracted from the I
SET
input and gained by a factor of 3.3. The
output of this amplifier is compared with a 0.5V threshold, yielding a
150mV threshold. This threshold has a 3800 ppm/
°
C temperature
coefficient. If the subtraction exceeds 150mV, charge is pumped into
a capacitor until the capacitor hits V
CC
/2. At this time, the over current
fault is activated. If I
SET
= 0V and I
SENSE
= V
CC
, the part enters an
unprotected, 150
μ
A quiescent current mode.
Positive Input to the Over Current Amplifier: 20
μ
A flows into the I
SET
pin if it is pulled through a resistor to V
IN
. This current has a
4300ppm/
°
C temperature coefficient and can be used via external
resistor to raise the overcurrent trip point from 150mV to some higher
value. If I
SET
= 0V and I
SENSE
= 0V, the part enters an unprotected,
250
μ
A quiescent current mode.
Power and Analog Ground: Hook directly to output ground.
Drive for PFET High Side Switch: 1nF/20ns Output Driver.
2
FFLAG
3
V
OUT
4
ENABLE
5
I
SENSE
6
I
SET
7
8
GND
PDRV
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6122CU | Evaluation Board Manual |
| SP6122EB | Evaluation Board Manual |
| SP6122UEB | Evaluation Board Manual |
| SP6122ACU-1.5 | Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
| SP6122 | Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6122ACU-15/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Voltage, Micro 8, PFET, Buck Controller Ideal for 1A to 5A, Small Footprint, DC-DC Power Converters |
| SP6122ACU-L | 功能描述:DC/DC 開(kāi)關(guān)控制器 Low Voltage, Micro 8 PFET Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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 |
| SP6122ACU-L/TR | 功能描述:DC/DC 開(kāi)關(guān)控制器 Low Voltage, Micro 8 PFET Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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 |
| SP6122ACU-L-1-5 | 制造商:Exar Corporation 功能描述:BUCK CONTROLLER LOW VOLT PFET 6122 |
| SP6122CU | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
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