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參數(shù)資料
| 型號： | AAT3112 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 500mA High Efficiency Charge Pump for White LED Flash Applications |
| 中文描述： | 500mA的高效率電荷泵白光LED閃光燈應(yīng)用 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 354K |
| 代理商： | AAT3112 |
AAT3112
500mA High Efficiency Charge Pump
for White LED Flash Applications
Typical Application
AAT3112
C1
+
C1
-
C2
+
C2
-
C1 = 1
μ
F
C2 = 1
μ
F
EN1
EN2
Enable Light
Enable Flash
D1
D2
D3
D4
V
OUT1
V
IN
V
OUT2
C
OUT
R
B
GND
C
IN
V
IN
3112.2004.12.1.2
1
ChargePump
General Description
The AAT3112 is a member of AnalogicTech's Total
Power Management IC (TPMIC) family. It is a
dual voltage doubling charge pump that provides a
regulated output voltage. It operates with an input
voltage range of 2.7 to 5.0 volts. The device can
deliver a constant 200mAoutput load current and up
to 500mA of pulsed current. The 500mA peak cur-
rent capability of the AAT3112 makes it ideal for
white LED flash applications. A low external parts
count (two 1μF flying capacitors and two small
capacitors at V
IN
and V
OUT
) makes the AAT3112 ide-
ally suited for small battery-powered applications.
The AAT3112 has a thermal management system
to protect the device in the event of a short-circuit
condition at the output pin. Built-in soft-start circuit-
ry prevents excessive inrush current during start-
up. A high charge pump switching frequency
enables the use of very small external capacitors.
A low current shutdown feature disconnects the
load from V
IN
and reduces quiescent current to less
than 1μA. The AAT3112 is available in a 16-pin
3x3mm QFN package and is rated over the -40°C
to +85°C temperature range.
Features
Input Voltage Range:
AAT3112-5.0: 2.7V to 5.0V
AAT3112-4.5: 2.7V to 4.5V
Up to 500mA Peak Output Current
200mA Continuous Output Current
I
Q
<1μA in Shutdown
Regulated 4.5V or 5.0V Output
26μA of Quiescent Current
Small Application Circuit
Automatic Soft Start
No Inductors
Short-Circuit/Over-Temperature Protection
16-Pin 3x3mm QFN Package
Temperature Range: -40°C to +85°C
Applications
General-Purpose High-Current Boost Supply
White LED Backlighting
White LED Photo Flash
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT3112IVN-4.5-T1 | 500mA High Efficiency Charge Pump for White LED Flash Applications |
| AAT3112IVN-5.0-T1 | 500mA High Efficiency Charge Pump for White LED Flash Applications |
| AAT3113 | High Efficiency 1.5X Fractional Charge Pumps For White LED Applications |
| AAT3113ISN-20-T1 | High Efficiency 1.5X Fractional Charge Pumps For White LED Applications |
| AAT3113ITP-20-T1 | High Efficiency 1.5X Fractional Charge Pumps For White LED Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3112_07 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:500mA High Efficiency Charge Pump for White LED Flash Applications |
| AAT3112IVN-4.5-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:500mA High Efficiency Charge Pump for White LED Flash Applications |
| AAT3112IVN-5.0-T1 | 制造商:SKYWORKS SOLUTIONS INC 功能描述:5.0V REG CHPMP, QFN33-16TR TR 制造商:Skyworks Solutions Inc 功能描述:LED DRIVER IC |
| AAT3113 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency 1.5X Fractional Charge Pumps For White LED Applications |
| AAT3113_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency 1.5X Fractional Charge Pumps For White LED Applications |
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