XA2320B Converter Datasheet

XA2320B Datasheet, PDF, Equivalent


Part Number

XA2320B

Description

Regulated Charge Pump DC/DC Converter

Manufacture

XINNA SEMI

Total Page 11 Pages
Datasheet
Download XA2320B Datasheet


XA2320B
XA2320B
Low Noise, Regulated Charge Pump DC/DC Converter
Features
Fixed 3.3V ± 4% Output
VIN Range: 1.8V to 5V
Output Current: Up to 150mA
Constant Frequency Operation at All Loads
Low Noise Constant Frequency (1.2MHz)
Operation
Automatic Soft-Start Reduces Inrush
Current
Shutdown Current <1µA
Short-Circuit Protection
No Inductors
Available in Low Profile 6-Lead SOT23
Package
Application
2 AA Cell to 3.3V
USB On-The-Go Devices
White LED Drivers
Handheld Devices
Description
The XA2320B is a low noise, constant
frequency (1.2MHz) switched capacitor voltage
doubler. It produce a regulated output voltage
from a 1.8V to 5V input with up to 150mA of
output current. Low external parts count (one
flying capacitor and two small bypass
capacitors at VIN and VOUT) make the
XA2320B ideally suited for small,
battery-powered applications.
A new charge-pump architecture maintains
constant switching frequency to zero load and
reduces both output and input ripple. The
XA2320B have thermal shutdown capability
and can survive a continuous short circuit from
VOUT to GND. Built-in soft-start circuitry
prevents excessive inrush current during
start-up.
High switching frequency enables the use of
small ceramic capacitors. A low current
shutdown feature disconnects the load from VIN
and reduces quiescent current to <1uA.
The XA2320B is available in the 6-pin SOT23-6.
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1

XA2320B
Typical Applications
XA2320B
Figure 1: Regulated 3.3V Output
Figure 2: USB Port to Regulated 3.3V Power Supply
Figure 3: Lithium-Ion Battery to 5V White or Blue LED Drivers
Pin Description
PIN NUMBER
SOT-23-6
1
2
3
4
5
6
PIN NAME
VOUT
GND
EN
C-
VIN
C+
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Features XA2320B Low Noise, Regulated Charge Pump DC/DC Converter Features Fixed 3.3V 4% Output VIN Range: 1.8V to 5V Outpu t Current: Up to 150mA Constant Frequen cy Operation at All Loads Low Noise Con stant Frequency (1.2MHz) Operation Auto matic Soft-Start Reduces Inrush Current Shutdown Current <1µA Short-Circuit P rotection No Inductors Available in Low Profile 6-Lead SOT23 Package Applicati on 2 AA Cell to 3.3V USB On-The-Go Devi ces White LED Drivers Handheld Devices Description The XA2320B is a low noise , constant frequency (1.2MHz) switched capacitor voltage doubler. It produce a regulated output voltage from a 1.8V t o 5V input with up to 150mA of output c urrent. Low external parts count (one f lying capacitor and two small bypass ca pacitors at VIN and VOUT) make the XA23 20B ideally suited for small, battery-p owered applications. A new charge-pump architecture maintains constant switchi ng frequency to zero load and reduces b oth output and input ripple. The XA2320B have thermal shutdown .
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