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參數資料
| 型號： | AAT2503IZL-BAA-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Adjustable 3-Channel Regulator |
| 中文描述： | 可調節的3通道穩壓器 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 1022K |
| 代理商： | AAT2503IZL-BAA-T1 |
AAT2503
Adjustable 3-Channel Regulator
2503.2007.04.1.1
1
SystemPower
General Description
The AAT2503 is a three-channel regulator consist-
ing of a step-down converter with an input voltage
range of 2.7V to 5.5V plus two low dropout (LDO)
linear regulators.
The step-down converter optimizes power efficien-
cy throughout the load range. Pulling the MODE/
SYNC pin high enables "PWM Only" mode, main-
taining constant frequency and low output ripple
across the operating range. Alternatively, the con-
verter may be synchronized to an external clock
input to the MODE/SYNC pin. The step-down con-
verter delivers up to 800mA of output current, while
consuming 30μA of typical no load quiescent cur-
rent. The switching frequency is 2MHz, minimizing
the size of external components.
The two LDOs (LDOA/LDOB) have independent
inputs and are capable of delivering up to 150mA
each. A Power-OK (POK) function provides an
open drain output signal when LDOA is within reg-
ulation. Both LDOs feature low quiescent current
and a low dropout voltage. The output voltages for
both LDOs are adjustable to as low as 0.6V. The
linear regulators have independent Enable pins.
The AAT2503 is available in a Pb-free 3x4mm
QFN34-20 package and is rated over the -40°C to
+85°C temperature range.
Features
800mA Step-Down Converter
— V
IN
Range: 2.7V to 5.5V
— V
OUT
Range: 0.9V to V
IN
— High Efficiency
— 2MHz Switching Frequency
Two 150mA Low Dropout Regulators
— V
OUT
Range: 0.6V to V
IN
— High Output Accuracy: ±1.5%
85μA of Total I
Q
Independent Enable Pins
Integrated Power MOSFETs
Over-Temperature and Current Limit
Protection
QFN34-20 Package
-40°C to +85°C Temperature Range
Applications
Cellular Phones
Digital Cameras
Handheld Instruments
Microprocessor/DSP Core/IO Power
PDAs and Handheld Computers
Typical Application
AAT2503
R
8
R
5
R
7
R
4
C6
2.2μF
OUTA
OUTB
POK
POK
OUTA
OUTB
AGND
VLDOA
VLDOB
LX
FB
L1
V
OUT
(Buck)
PGND
VIN
VP
FBB
FBA
R
2
R
1
C5
2.2μF
C2
10μF
ENB
EN
ENA
V
IN
R
100k
Ω
MODE/SYNC
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| AAT2506IWP-AI-T1 | 1MHz Step-Down Converter/LDO Regulator |
| AAT2506IWP-AN-T1 | 1MHz Step-Down Converter/LDO Regulator |
| AAT2506IWP-AQ-T1 | 1MHz Step-Down Converter/LDO Regulator |
| AAT2506IWP-AW-T1 | 1MHz Step-Down Converter/LDO Regulator |
| AAT2511 | Dual 600mA, 1MHz Step-Down DC/DC Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AAT2504 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Adjustable 3-Channel Regulator |
| AAT2504_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Adjustable 3-Channel Regulator |
| AAT2504IZL-BAA-T1 | 制造商:Skyworks Solutions Inc 功能描述:VOLTAGE REGULATOR |
| AAT2505 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Dual Channel, Step-Down Converter/Linear Regulator |
| AAT2505IWP-AO-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Dual Channel, Step-Down Converter/Linear Regulator |
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