DC/DC Converters. XC9232 Datasheet

XC9232 Converters. Datasheet pdf. Equivalent

XC9232 Datasheet
Recommendation XC9232 Datasheet
Part XC9232
Description 600mA Synchronous Step-Down DC/DC Converters
Feature XC9232; XC9232 Series ETR0525-001a 600mA Synchronous Step-Down DC/DC Converters Preliminary ■GENERAL DESC.
Manufacture Torex Semiconductor
Datasheet
Download XC9232 Datasheet




Torex Semiconductor XC9232
XC9232 Series
ETR0525-001a
600mA Synchronous Step-Down DC/DC Converters
Preliminary
GENERAL DESCRIPTION
GreenOperation Compatible
The XC9232 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.42ΩP-channel MOS driver
transistor and 0.52ΩN-channel MOS switching transistor, designed to allow the use of ceramic capacitors. Operating voltage
range is from 2.5V~5.5V. The device provides a high efficiency, stable power supply with an output current of 600mA to be
configured using only a coil and two capacitors connected externally. As for operation mode, the series is automatic
PWM/PFM switching control, allowing fast response, low ripple and high efficiency over the full range of loads (from light load to
heavy load).
The soft start and current control functions are internally optimized. During stand-by, all circuits are shutdown to reduce
current consumption to as low as 1.0μA or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal
P-channel MOS driver transistor is forced OFF when input voltage becomes 1.4V or lower.
APPLICATIONS
Mobile phones, Smart phones
Bluetooth headsets
Mobile WiMAX PDAs, MIDs, UMPCs
Portable game consoles
Digital cameras, Camcorders
MP3 Players, Portable Media Players
Notebook computers
FEATURES
Driver Transistor Built-In
: 0.42Ω P-ch driver transistor
0.52Ω N-ch switch transistor
Input Voltage
: 2.5V ~ 5.5V
Output Voltage
: 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, .3V, 3.6V
High Efficiency
: 92% (TYP.)
Output Current
: 600mA
Oscillation Frequency
: 1.2MHz (+15%)
Maximum Duty Cycle
: 100%
Control Methods
: PWM/PFM Auto
Function
: Current Limiter Circuit Built-In
(Constant Current & Latching)
Soft Start
Capacitor
: Low ESR Ceramic Capacitor
Packages
: SOT-25J
Environmentally Friendly
: EU RoHS Compliant, Pb Free
* Performance depends on external components and wiring on the PCB.
TYPICAL APPLICATION CIRCUIT
SOT-25J
TYPICAL PERFORMANCE
CHARACTERISTICS
Efficiency vs. Output CurrentfOSC=1.2MHz, VOUT=1.8V
XC9232A18C
L=4.7μH(NR4018) CIN=4.7μF CL=10μF
100
90
80
70
60
50
40
30
20
10
0
0.1
VIN= 4.2V
3.6V
2.4V
PWM/PFM Automatic Switching Control
1 10 100
Output Current:IOUT(mA)
1000
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Torex Semiconductor XC9232
XC9232 Series
PIN CONFIGURATION
SOT-25J
(TOP View)
PIN ASSIGNMENT
PIN NUMBER
SOT-25J
1
2
3
4
5
PIN NAME
VIN
VSS
CE
VOUT
Lx
FUNCTION
Power Input
Ground
High Active Enable
Fixed Output Voltage Pin
Switching Output
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Torex Semiconductor XC9232
XC9232
Series
PRODUCT CLASSIFICATION
Ordering Information
XC9232①②③④⑤⑥-⑦(*1) PWM / PFM automatic switching control
DESIGNATOR
ITEM
Product Type
SYMBOL
A
DESCRIPTION
VIN2.0V, No CL discharge, Low speed soft-start
②③
Fixed Output Voltage
(VOUT)
Oscillation Frequency
10
12
15
18
25
28
30
33
36
C
1.0V
1.2V
1.5V
1.8V
2.5V
2.8V
3.0V
3.3V
3.6V
1.2MHz
⑤⑥-
Package (Order Unit) (*1)
VR-G
SOT-25J (3,000/Reel)
(*1) The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
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