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AX5110 Datasheet Preview

AX5110 Datasheet

Step-up PFM DC/DC Converter

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AX5110
Step-up PFM DC/DC Converter
GENERAL DESCRIPTION
The AX5110 is a Pulse Frequency Modulation (PFM) DC/DC converter. It is Low
quiescent current 30uA and shutdown current less 1uA. The AX5110 feature a wide
input voltage. The operating voltage is ranged from 1.2V to 12V. It also feature low
quiescent current, switching current limiting, low temperature coefficient.
Smaller package size and fewer tiny external components are required in the
application to save space and lower cost. AX5110 is available in SOT-23-5L package.
FEATURES
- Input voltage: 1.2V to 12V
- Low Quiescent Current: 17uA(typ.)
- Low Saturation Voltage : 200mV typical at 300mA
- 350mA typical switching current limiting
- High output voltage : up to 34V
- Low Profile SOT-23-5 Pb-Free Packaging
PIN ASSIGNMENT
The package type: SOT-23-5L; the pin assignment is given by:
Top View
VIN EN
54
AX5110
123
SW GND FB
SOT-23-5L
Name
SW
GND
FB
EN
VIN
Description
Switch pin. Connect
inductor and diode here.
Ground Pin
Feedback pin
Shutdown pin
Hnormal operation
Loperation stopped
IC power supply pin
external
1/7
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Aug.23, 2010




AXElite

AX5110 Datasheet Preview

AX5110 Datasheet

Step-up PFM DC/DC Converter

No Preview Available !

AX5110
BLOCK DIAGRAM
FB 3
VIN 5
Feedback
Comparator - A1 +
VREF
1.23V
RC
400nS
CC One Shot
EN 4
Shutdown
Driver
1 SW
Q1
Current-Limit
Comparator
Current-Limit
Reference
2 GND
ORDER/MARKING INFORMATION
Order Information
AX5110 X X
Package Type Packing
B: SOT-23-5L A : Taping
Top Marking
B1Y WX
AX5110
ID code:internal
WW:01~26 (A~Z)
27~52 (a~z)
Year: A=2010
1=2011
ABSOLUTE MAXIMUM RATINGS (at TA=25°C)
Characteristics
Symbol Rating Unit
VIN Pin Voltage
VIN 15 V
SW Voltage
VSW 36 V
Feedback Pin Voltage
VFB VIN V
EN Pin Voltage
VEN 15 V
Maximum Junction Temperature
TJ 150 V
Storage Temperature Range
TSTG -40 to +150 °C
Operating Temperature Range
TOPR -40 to +125 °C
Power Dissipation
PD ( TJ-TA ) / θJA mW
Thermal Resistance from Junction to case
θJC 110 °C/W
Thermal Resistance from Junction to ambient
θJA 250 °C/W
Note: θJA is measured with the PCB copper area of approximately 1 in2(Multi-layer) that need connect to GND
pin of the AX5110.
2/7
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Aug.23, 2010


Part Number AX5110
Description Step-up PFM DC/DC Converter
Maker AXElite
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