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AXElite

AX5510A Datasheet Preview

AX5510A Datasheet

Boost Converter

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AX5510A
680K/1.2MHz, High Voltage, Boost Converter
GENERAL DESCRIPTION
The AX5510A is a high performance, high efficiency step up DC-DC Converter with
integrated 2A. The AX5510A converter input voltage ranging from 2.6 to 5.5V. The Output
voltage can be set up to 27V. The selectable frequency of 680 kHz and 1.2 MHz allows the
use of small external inductors and capacitors and provides fast transient response. Current
mode control with external compensation network makes it easy to stabilize the system and
keep maximum flexibility. Programmable soft start function minimizes impact on the input
power system. Internal power MOSFET with very low RDS(ON) provides high efficiency. The
AX5510A automatically transits from PWM to PFM during light load condition further
increasing efficiency. The converter also provides protection functions such as Current Limit
and Thermal shutdown. The AX5510A is available in space-saving MSOP-10L-EP,
MOSP-8L-EP, TDFN-10L and SOP-8L-EP packages.
FEATURES
- 2.6V to 5.5V operating input voltage range
- Adjustable output voltage range up to 27V
- Up to 2A output switch current
- 680K/1.2MHz Selectable Switching Frequency
- Programmable soft-start function
- External Compensation Network
- Current limit and Thermal shutdown protection
- Under voltage Lockout
- 1µA Shutdown Current
- Available in the Pb-Free MSOP-10L-EP, MSOP-8L-EP ,TDFN-10L and SOP-8L-EP
Packages
BLOCK DIAGRAM
VCC
7uA
Soft
Start
SS
FB
COMP
1.238V
Reference
Error
Amplifier
Summing
Comparator
Thermal
Shutdown
Control and
Driver Logic
Enable/
Disable
EN
LX
N-MOS
FREQ
Oscillator
SGND
Slope
Compensation
Current
Sense
PGND
1/16
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Oct.18, 2011




AXElite

AX5510A Datasheet Preview

AX5510A Datasheet

Boost Converter

No Preview Available !

AX5510A
PIN ASSIGNMENT
The packages of AX5510A are MSOP-10L-EP, TDFN-10L, SOP-8L-EP and MSOP-8L-EP; the
pin assignment is given by:
( Top view )
( Top View)
COMP 1
FB 2
EN 3
SGND 4
PGND 5
Exposed
Pad
(SGND)
10 SS
9 FREQ
8 VCC
7 LX
6 LX
COMP 1
FB 2
EN 3
GND 4
Exposed
AXPad
(GND)
8 SS
7 FREQ
6 VCC
5 LX
COMP 1
FB 2
EN 3
SGND 4
PGND 5
MSOP-10L-EP
Exposed
Pad
(SGND)
10 SS
9 FREQ
8 VCC
7 LX
6 LX
TDFN-10L (3*3)
TOP View
SOP/MSOP-8L-EP
Name
Description
VCC Power Input pin
EN Enable Pin
COMP Compensation Pin
FB Feedback Pin
SS
Soft start Pin. Connect a capacitor to
GND
GND Ground Pin
SGND Signal Ground
PGND Power Ground
LX Switch Output Pin
Frequency select pin. The power
FREQ
switch operates at 680kHz
connected to GND and at
if FREQ is
1.2MHz if
FREQ is connected to VCC
2/16
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Oct.18, 2011


Part Number AX5510A
Description Boost Converter
Maker AXElite
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