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AXElite

AX2016 Datasheet Preview

AX2016 Datasheet

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AX2016/A
40V, 1.7A, Boost for 10 White LED Driver
GENERAL DESCRIPTION
The AX2016/A is a step-up converter designed for driving up to 10 series white LEDs
for backlighting application. The AX2016/A uses current mode, 1MHZ fixed frequency
architecture to regulate the LED current, which is set through an external current sense
resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The
OV pin monitors the output voltage and turns off the converter if an over-voltage condition is
present due to an open circuit condition. The AX2016/A includes under-voltage lockout,
current limiting and thermal shutdown protection preventing damage in the event of an
output overload. The driver is available in small 6-pin TSOT-23 and 8-pin TDFN (2mm x
2mm) packages.
FEATURES
- 2.5V to 5.5V operating input voltage range
- Drives up to 10 series White LEDs
- 1MHz Fixed Switching Frequency
- Wide range for PWM dimming (200Hz to 200KHz)
- Internal 1.7A switching current limit
- Over Voltage Protection (OVP)
- Internal Soft-start Function
- Current limit and Thermal shutdown protection
- Under voltage Lockout
- Available in the 6-pin TSOT-23 and 8-pin TDFN Packages
Axelite Confidential Materials, do not copy or distribute without written consent.
1/11




AXElite

AX2016 Datasheet Preview

AX2016 Datasheet

Boost

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AX2016/A
BLOCK DIAGRAM
VCC
EN
UVLO
Soft Start
Reference
1.238V
300mV
Enable
Logic
10ms
Summing
Comparator
Shutdown
Thermal
Shutdown
OVP
OV
SW
FB
Error Amplifier
Control and
N-MOS
Driver Logic
Oscillator
1MHz
Slope
Compensation
Current
Sense
GND
PIN ASSIGNMENT
The packages of AX2016/A are TSOT-23-6L and TDFN-8L; the pin assignment is given by:
GND 1
8 SW
VCC 2
OV 3
EN 4
(GND)
7 NC
6 FB
5 GND
TDFN-8L (2*2)
(Top View)
SW 1
GND 2
FB 3
6 VCC
5 OV
4 EN
Name
Description
GND Ground Pin
VCC Power Input Pin
OV OVP Sense Pin
EN
Enable with Dimming Pin; Internal
Pull-Low; Logic High Active
FB
Feedback Pin; Put a Resistor to GND to
Setting the Current
NC No Connect Pin
SW Switch Output Pin
TSOT-23-6L
2/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Nov.26, 2012


Part Number AX2016
Description Boost
Maker AXElite
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AX2016 Datasheet PDF





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