XA5202 Converter Datasheet

XA5202 Datasheet, PDF, Equivalent


Part Number

XA5202

Description

2A 1.5MHz Synchronous Step-Down DC/DC Converter

Manufacture

XINNA SEMI

Total Page 9 Pages
Datasheet
Download XA5202 Datasheet


XA5202
XA5202
____________________________________________________________________________________________________________________________
2A 1.5MHz Synchronous Step-Down DC/DC Converter
GENERAL DESCRIPTION
The XA5202 synchronous buck
converter is a high frequency step-down
voltage regulator with current control mode.
It can output continuous 2A with excellent
line and load regulation. The current is only
130uA at operating and less than 1uA at
shutdown. This device is the ideally
solution for small space and board level
power supply application.
This device integrates PWM controller,
power switch and compensation network,
required only three components to
implement a switching power supply. It
has internal fixed 1.5MHz frequency and
makes application circuit smaller.
The XA5202 is available in fixed output
voltage version, 1.2V, 1.8V, 3.3V, and is
also available in an adjustable output
voltage version. The adjustable version
has wide output range from 0.6V to VIN.
The XA5202 series products are available
in a SOP8-PP package.
FEATURES
2A Continuous Output Capability
High Efficiency up to 95%
2.5V to 5.5V Input Range
Adjustable Output Voltage from 0.6V to
VIN
Low Quiescent Current 130uA
Required Only 3 External Components
1.5MHz Constant Frequency Operation
Low Dropout Operation: 100% Duty
Cycle
Under Voltage Lockout, Over Current,
Short Current, and Thermal Protection
Operating Temperature: -40oC to +85°C
Available in tiny SOP8-PP Package
APPLICATIONS
Handheld Instruments
Digital Cameras
DSP Core Supplies
Board Mounted Power Supplies
Figure 1. Typical Application Circuit
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XA5202
__________________________________________________________________________________________
ORDERING INFORMATION
XA5202
PART
TEMP
NUMBER RANGE
XA5202
-40°C to
85°C
SWICHING
FREQUENCY
1.5MHz
OUTPUT
VOLTAGE (V)
Adjustable
OUTPUT
CURRENT
(A)
2
PACKA
GE
PINS
SOP8-
PP
8
TOP MARK
5202ADJYW
PIN CONFIGURATION
PIN DESCRIPTION
SOP8-PP
Figure 2. PIN Configuration
PIN #
1
2
3
4
5
6
7
8
NAME
NC
VIN
SW
GND
FB
NC
EN
NC
FUNCTION
No Connect
Power Input. VIN supplies the power to the IC, as well as the step-down
converter switches. Driver VIN with a 2.5 to 5.5V power source. Bypass VIN to
GND with a suitably large capacitor to eliminate noise on the input to the IC.
Power Switching Output. SW is the switching node that supplies power to the
output. Connect the output LC filter from SW to the output load.
Ground
Feedback Input. FB senses the output voltage to regulator that voltage. Drive FB
with a resistive voltage divider from the output voltage. The feedback threshold is
0.6V
No Connect
Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high
to turn on the regulator, driver it low to turn it off.
No Connect
ABSOLUTE MAXIMUM RATINGS
(Note: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating
conditions for long periods may affect device reliability.)
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Features XA5202 _________________________________ _______________________________________ _______________________________________ _____________ 2A 1.5MHz Synchronous Ste p-Down DC/DC Converter GENERAL DESCRIP TION The XA5202 synchronous buck conver ter is a high frequency step-down volta ge regulator with current control mode. It can output continuous 2A with excel lent line and load regulation. The curr ent is only 130uA at operating and less than 1uA at shutdown. This device is t he ideally solution for small space and board level power supply application. This device integrates PWM controller, power switch and compensation network, required only three components to imple ment a switching power supply. It has i nternal fixed 1.5MHz frequency and make s application circuit smaller. The XA52 02 is available in fixed output voltage version, 1.2V, 1.8V, 3.3V, and is also available in an adjustable output volt age version. The adjustable version has wide output range from 0.6V to VIN. The XA5202 series products.
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