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AAT1500 Datasheet

  • AAT1500

  • CONSTANT CURRENT BOOST CONVERTER FOR 1 TO 4 WHITE LEDS

  • 563.83KB

  • 11頁

  • ETC

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Advanced Analog Technology, Inc.
AAT1500
Product information presented is current as of publication date. Details are subject to change without notice
CONSTANT CURRENT BOOST CONVERTER
FOR 1 TO 4 WHITE LEDS
Features
Up to 4 LEDs at 2.8V Supply
High Efficiency (85%)
Output Over Voltage Protection
HV Internal Switch
1 MHz PWM Switching Frequency
Uses Tiny 1 mm Height Inductor
2.6V to 6V Input Range
0.1碌A(chǔ) Shutdown Current
SOT-26 & VQFN-8 Package Available
General Description
The AAT1500 is a step-up converter that provides a
solution to drive 1 to 4 white LEDs with a constant
current from a Lithium Ion cell, and its switching
frequency is fixed at 1 MHz.
The AAT1500 offers a low 0.25V reference, which
minimizes power loss in the current setting resistor
and improves efficiency. Protection feature includes
output over voltage protection. The AAT1500
consists of a 0.1碌A(chǔ) shutdown current, and HV
internal switch. Input supple range allows operation
from 2.6V to 6V.
The AAT1500 is available in 6-pin SOT-26 and
8-pin VQFN-8 package.
Pin Configuration
TOP
VIEW
SW
GND
1
2
3
6
5
VDD
TOP
VIEW
OVP
1
8
7
6
5
SW
GND1
IE
NC
Applications
Palmtops
MP3 Player
Digital Still Cameras
Portable Media Player
Cell Phones and Smart Phones
Electronic Information Organizers
VDD 2
OVP
EN
IE
4
EN
3
4
GND
SOT-26 PACKAGE
VQFN-8 PACKAGE
鈥?/div>
鈥?/div>
鈥?/div>
Advanced Analog Technology, Inc
.
鈥?/div>
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