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AAT3112 の電気的特性と機能

AAT3112のメーカーはAATです、この部品の機能は「High Efficiency Charge Pump」です。


製品の詳細 ( Datasheet PDF )

部品番号 AAT3112
部品説明 High Efficiency Charge Pump
メーカ AAT
ロゴ AAT ロゴ 




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AAT3112 Datasheet, AAT3112 PDF,ピン配置, 機能
AAT3112
500mA High Efficiency Charge Pump
for White LED Flash Applications
General Description
Features
ChargePump
The AAT3112 is a member of AnalogicTech's Total
• Input Voltage Range:
Power Management IC™ (TPMIC™) family. It is a
— AAT3112-5.0: 2.7V to 5.0V
dual voltage doubling charge pump that provides a
— AAT3112-4.5: 2.7V to 4.5V
regulated output voltage. It operates with an input
• Up to 500mA Peak Output Current
voltage range of 2.7 to 5.0 volts. The device can
• 200mA Continuous Output Current
deliver a constant 200mA output load current and up
to 500mA of pulsed current. The 500mA peak cur-
• IQ <1μA in Shutdown
• Regulated 4.5V or 5.0V Output
rent capability of the AAT3112 makes it ideal for
• 26μA of Quiescent Current
white LED flash applications. A low external parts
• Small Application Circuit
count (two 1μF flying capacitors and two small
• Automatic Soft Start
capacitors at VIN and VOUT) makes the AAT3112 ide-
ally suited for small battery-powered applications.
• No Inductors
• Short-Circuit/Over-Temperature Protection
The AAT3112 has a thermal management system
to protect the device in the event of a short-circuit
• 16-Pin 3x3mm QFN Package
• Temperature Range: -40°C to +85°C
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.
Applications
A low current shutdown feature disconnects the
load from VIN and reduces quiescent current to less
than 1μA. The AAT3112 is available in a Pb-free
16-pin 3x3mm QFN package and is rated over thewww.DataSheet4U.com
General-Purpose High-Current Boost Supply
White LED Backlighting
White LED Photo Flash
-40°C to +85°C temperature range.
Typical Application
VIN
CIN
Enable Light
Enable Flash
C1 = 1μF C2 = 1μF
C1+ C1- C2+ C2-
VIN VOUT1
VOUT2
AAT3112
EN1
EN2
GND
C OUT
D1 D2 D3 D4
RB
3112.2007.01.1.5
1

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AAT3112 pdf, ピン配列
AAT3112
500mA High Efficiency Charge Pump
for White LED Flash Applications
Absolute Maximum Ratings1
Symbol
VIN
VOUT
VEN
TJ
TLEAD
Description
Input Voltage
Charge Pump Output
EN to GND Voltage
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6
-0.3 to 6
-0.3 to 6
-40 to 150
300
Units
V
V
V
°C
°C
Thermal Information
Symbol
PD
θJA
Description
Maximum Power Dissipation
Maximum Thermal Resistance2
Value
2.0
50
Units
W
°C/W
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions
other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on an FR4 board.
3112.2007.01.1.5
3


3Pages


AAT3112 電子部品, 半導体
AAT3112
500mA High Efficiency Charge Pump
for White LED Flash Applications
Typical Characteristics-AAT3112-4.5V
VIN = 3.5V, CIN = COUT = 10μF, C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
Output Voltage vs. Output Current
5.0
4.9
4.8 VIN = 3.6V VIN = 3.9V
4.7
4.6
4.5
4.4 VIN = 4.2V
4.3
4.2
4.1
4.0
0
50 100 150 200
Output Current (mA)
250
300
Supply Current vs. Supply Voltage
(No Load, No Switching)
30
25
20
15
10
5
0
2.5 3.0 3.5 4.0
Supply Voltage (V)
4.5
Startup Time with 100mA Load
EN
(2V/div)
VOUT
(1V/div)
Time (50µs/div)
Startup Time with 200mA Load
EN
(2V/div)
VOUT
(1V/div)
Time (50µs/div)
Maximum Current Pulse vs. Input Voltage
(50ms pulse; VOUT > 4.0V)
800
700
600
500
400
300
3
3.2 3.4 3.6 3.8
Input Voltage (V)
4
4.2
6
Efficiency vs. Input Voltage
85
80 50mA
75
70
65 200mA
60 100mA
55
50
45
40
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
Input Voltage (V)
3112.2007.01.1.5

6 Page



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