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參數(shù)資料
| 型號： | AAT1150IKS-1.5-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | GT 4C 4#4 PIN RECP |
| 中文描述： | 1MHz的第1A降壓型DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 279K |
| 代理商： | AAT1150IKS-1.5-T1 |
AAT1150
1MHz 1A Step-Down DC/DC Converter
1150.2005.03.1.2
9
Functional Block Diagram
V
P
= 2.7V- 5.5V
V
CC
EN
SGND
PGND
LOGIC
1.0V REF
Temp.
Sensing
OSC
OP. AMP
LX
FB
DH
DL
CMP
1M
Applications Information
Control Loop
The AAT1150 is a peak current mode buck con-
verter. The inner wide bandwidth loop controls the
peak current of the output inductor. The output
inductor current is sensed through the P-channel
MOSFET (high side) and is also used for short-cir-
cuit and overload protection. A fixed slope com-
pensation signal is added to the sensed current to
maintain stability. The loop appears as a voltage-
programmed current source in parallel with the out-
put capacitor.
The voltage error amplifier output programs the
current loop for the necessary inductor current to
force a constant output voltage for all load and line
conditions. The feedback resistive divider is inter-
nal, dividing the output voltage to the error amplifi-
er reference voltage of 1.0V. The error amplifier
does not have a large DC gain typical of most error
amplifiers. This eliminates the need for external
compensation components while still providing suf-
ficient DC loop gain for load regulation. The
crossover frequency and phase margin are set by
the output capacitor value only.
Soft Start/Enable
Soft start increases the inductor current limit point in
discrete steps when the input voltage or enable
input is applied. It limits the current surge seen at the
input and eliminates output voltage overshoot. The
enable input, when pulled low, forces the AAT1150
into a low power, non-switching state. The total input
current during shutdown is less than 1μA.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT1150IKS-1.8-T1 | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:4; Connector Shell Size:32; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight |
| AAT1150IKS-2.5-T1 | 1MHz 1A Step-Down DC/DC Converter |
| AAT1150IKS-3.3-T1 | 1MHz 1A Step-Down DC/DC Converter |
| AAT1151 | 850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-1.0-T1 | 850kHz 700mA Synchronous Buck DC/DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1150IKS-2.5-T1 | 制造商:SKYWORKS SOLUTIONS 功能描述:AAT1150 Series 5.5 V 1 MHz 1 A Synchronous Buck DC/DC Converter - MSOP-8 |
| AAT1150IKS-3.3-T1 | 制造商:Skyworks Solutions Inc 功能描述:Voltage Regulators - Switching Regulators 1MHz 1A Synchronous Buck DC/DC Converter |
| AAT1151 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151_07 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
| AAT1151IKS-1.0-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 700mA Synchronous Buck DC/DC Converter |
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