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參數資料
| 型號： | AAT1217 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 600mA, 1.2MHz, Micropower Synchronous Step-Up Converter |
| 中文描述： | 600mA的，1.2MHz的，微功耗同步升壓轉換器 |
| 文件頁數： | 1/13頁 |
| 文件大?。?/td> | 292K |
| 代理商： | AAT1217 |
General Description
The AAT1217 a high efficiency, synchronous, fixed
frequency, step-up converter designed for single-
cell or dual-cell alkaline, NiMH, or NiCd battery-
powered applications. The high 1.2MHz switching
frequency and completely integrated control cir-
cuitry minimize the total solution footprint area
while maintaining excellent regulation, ripple, and
transient response throughout the full load range.
Pulse skipping mode operation and low quiescent
current allow the AAT1217 to maintain high effi-
ciency performance for light load and sleep mode
conditions. With a 1.2A peak switch current limit,
the AAT1217 is capable of delivering 100mA to the
load from a singleAAcell or up to 400mAfrom dual
AA cells. The AAT1217 has a 0.85V start-up volt-
age with operation down to 0.5V.
The AAT1217 is available in a Pb-free, space-sav-
ing low profile (1mm) 6-pin TSOT23 package and
is rated over the -40°C to +85°C ambient tempera-
ture range.
Features
V
IN
Operation Range: 0.5V to V
OUT
V
OUT
Range: 2.5V to 5.5V
100mA Output from a Single AA Cell Input
400mA Output from a Dual AA Cell Input
High Efficiency: Up to 93% Efficiency
Low Start-Up Voltage: 0.85V Typical
Internal Synchronous Rectifier
— V
OUT
≤ 4.5V: No External Schottky Diode
Fixed Frequency Pulse Width Modulation
(PWM) Current-Mode Control Scheme with
Internal Compensation
1.2MHz Fixed Switching Frequency
1.2A Current Limit
Light Load Pulse Skipping Mode Operation
Low 80μA No Load Input Current
Over-Current Protection
EMI Reduction Anti-Ringing Control Circuitry
Low Shutdown Current: <1.0μA
-40°C to +85°C Ambient Temperature Range
Low Profile (1mm) TSOT23-6 Package
Applications
Cellular and Smart Phones
Digital Still and Video Cameras
Microprocessors and DSP Core Supplies
MP3 Player
Portable Instruments
Wireless and DSL Modems
AAT1217
600mA, 1.2MHz, Micropower
Synchronous Step-Up Converter
Typical Application
FB
VIN
SHDN
GND
VOUT
AAT1217-1.2
C
4.7μF
V
IN
: 0.85V
L1
4.7μH
R1
1.02M
R2
604k
V
:
3.3V,100mA
SW
R3
1M
C
4.7μF
FB
VIN
SHDN
GND
VOUT
AAT1217-3.3
C
4.7μF
V
IN
: 0.85V
L1
4.7μH
V
:
3.3V,100mA
SW
R3
1M
C
4.7μF
1217.2007.07.1.0
1
SwitchReg
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AAT1217_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:600mA, 1.2MHz, Micropower Synchronous Step-Up Converter |
| AAT1217ICA-1.2-T1 | 功能描述:開關變換器、穩(wěn)壓器與控制器 1.2MHz ADJ Step Up Converter RoHS:否 制造商:Skyworks Solutions, Inc. 輸出電壓: 輸出電流: 輸出功率: 輸入電壓: 開關頻率: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Reel |
| AAT1217ICA-3.3-T1 | 功能描述:電源開關 IC - 配電 600mA 1.2MHz Synch Boost Converter RoHS:否 制造商:Freescale Semiconductor 輸出端數量: 開啟電阻（最大值）: 開啟時間（最大值）: 關閉時間（最大值）: 工作電源電壓: 電源電流（最大值）: 最大工作溫度: 安裝風格: 封裝 / 箱體: |
| AAT1217ICA-5.0-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1217IGU-3.3-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
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