AAT15061 Advanced Analog Technology, Inc., AAT15061 Datasheet

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AAT15061

Manufacturer Part Number
AAT15061
Description
Boost Converter For Wled Driver
Manufacturer
Advanced Analog Technology, Inc.
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AAT15061-S3-T
Manufacturer:
MICRON
Quantity:
1 000
FEATURES
APPLICATIONS
Product information presented is for internal use within AAT Inc. only. Details are subject to change without notice.
Boost PWM with Internal NMOS
Wide PWM Dimming Range:100Hz to 200kHz
2.7V to 5.5V Input Voltage Range
Under-Voltage Lockout (UVLO) Protection
Internal Over Voltage and Thermal Protection
Internal Soft-Start
Fixed Switching Frequency : 1.4MHz
0.1µA Shutdown Current
Cell Phones
DSC
Small LCD Displays
Advanced Analog Technology, Inc.
BOOST CONVERTER FOR WLED DRIVER
Advanced Analog Technology, Inc. –
台 灣 類 比 科 技 股 份 有 限 公 司
Version 1.00
Page 1 of 14
GENERAL DESCRIPTION
The AAT15061 is a boost DC-DC converter for white
LED applications. This powerful device is equipped
with an internal MOSFET capable of supporting up to
13 3.2V/20mA LEDs. Additionally, the current-setting
resistor between the FB pin and GND pin maintains
consistent
brightness.
With a fixed high operation frequency of 1.4MHz, the
device design allows the use of smaller external
components and saves PCB size. The AAT15061 also
features an internal soft-start mechanism to effectively
reduce inrush current, and a fool-proof 44V OVP
protection function to prevent misuse. The AAT15061
is available in space-saving TSOT23-6 (TSOT26) and
SOT23-6 (SOT26) packages ideal for the portable
backlighting applications.
PIN CONFIGURATION
LED
currents
essential
AAT15061
for
October 2009
uniform

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AAT15061 Summary of contents

Page 1

... DSC Small LCD Displays BOOST CONVERTER FOR WLED DRIVER GENERAL DESCRIPTION The AAT15061 is a boost DC-DC converter for white LED applications. This powerful device is equipped with an internal MOSFET capable of supporting 3.2V/20mA LEDs. Additionally, the current-setting resistor between the FB pin and GND pin maintains consistent brightness ...

Page 2

... C J SYMBOL – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page AAT15061 MARKING MARKING DESCRIPTION B04AA SYMBOL VALUE OVP 275 ...

Page 3

... SYMBOL TEST CONDITION BCE – – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT15061 ° ambient MIN TYP MAX UNIT 1.2 1.4 1.6 MHz - - % ± ± ...

Page 4

... LXLV LEAKAGE LX – – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT15061 ° ambient MIN TYP MAX UNIT MIN TYP MAX UNIT 290 ...

Page 5

... Advanced Analog Technology, Inc. TYPICAL OPERATING CHARACTERISTICS – – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT15061 ...

Page 6

... Feedback Pin. The regulation voltage is 300mV. Chip Enable Input Pin Output Over Voltage Protect Pin Power Supply – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page AAT15061 FUNCTION – October 2009 ...

Page 7

... Advanced Analog Technology, Inc. FUNCTION BLOCK DIAGRAM – – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT15061 ...

Page 8

... Advanced Analog Technology, Inc. TYPICAL APPLICATION CIRCUIT PWM Dimming Control Frequency Range: 100Hz~200kHz – 台 灣 類 比 科 技 股 份 有 限 公 司 – Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT15061 ...

Page 9

... Advanced Analog Technology, Inc. DETAILED DESCRIPTION The AAT15061 is a boost converter for white LEDs. The AAT15061 switches at 1.4MHz. Optional external components may also be added if required. The optimized input and output capacitor size saves space at an economical cost. In addition, a low feedback voltage of 300mV minimizes power loss in the current-setting resistor to deliver better efficiency ...

Page 10

... LED When V DC current at 0mA to 20mA by setting R 56k , 10k , and 17.8k – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page AAT15061 , R and SET ∗ ...

Page 11

... Figure 4. Dimming Control Using Filtered PWM , R and C . The and C to supply – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc . – – Version 1.00 Page AAT15061 Signal – October 2009 ...

Page 12

... The input capacitor should be placed close to the VDD and GND pin. ▲ LED current sensor R should be placed close to SET AAT15061 to ensure LED current accuracy. ▲ LX trace should be thick and short to eliminate losses and decrease EMI disturbance. PCB Layout Figure 5. TOP Layer Figure 6. Bottom Layer – ...

Page 13

... Advanced Analog Technology, Inc. PACKAGE DIMENSION SOT23-6 (SOT26) Dimensions In Millimeters Symbol MIN A 1.05 A1 0.05 b 0.30 c 0.08 D 2.70 E 2.60 E1 1.40 e 0.85 L 0.35 TYP MAX ----- 1.30 ----- 0.15 ----- 0.50 ----- 0.20 2.90 3.10 2.80 3.00 1.60 1.80 0.95 1.05 0.45 0.55 – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc . – – Version 1.00 Page AAT15061 – October 2009 ...

Page 14

... Advanced Analog Technology, Inc. PACKAGE DIMENSION TSOT23-6(TSOT26) Dimensions In Millimeters Symbol MIN A 0.7 A1 0.05 b 0.30 c 0.08 D 2.70 E 2.60 E1 1.40 e 0.85 L 0.35 TYP MAX ----- 1.00 ----- 0.10 ----- 0.55 ----- 0.20 2.90 3.10 2.80 3.00 1.60 1.80 0.95 1.05 0.45 0.55 – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc . – – Version 1.00 Page AAT15061 – October 2009 ...

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