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XC9257A2MCMR-G

Description
Switching Regulator,
CategoryPower/power management    The power supply circuit   
File Size5MB,30 Pages
ManufacturerTOREX
Websitehttp://www.torex.co.jp/chinese/
Environmental Compliance
Download Datasheet Parametric View All

XC9257A2MCMR-G Overview

Switching Regulator,

XC9257A2MCMR-G Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid8088783806
package instruction,
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time24 weeks
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5.5 V
Minimum input voltage2.5 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G5
JESD-609 codee3
length2.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals5
Maximum operating temperature105 °C
Minimum operating temperature-40 °C
Maximum output current1 A
Maximum output voltage3.009 V
Minimum output voltage2.891 V
Nominal output voltage2.95 V
Package body materialPLASTIC/EPOXY
encapsulated codeLSSOP
Encapsulate equivalent codeTSOP5/6,.11,37
Package shapeRECTANGLE
Package formSMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Maximum seat height1.3 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency1200 kHz
Terminal surfaceTIN
Terminal formGULL WING
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum time at peak reflow temperature10
width1.6 mm
XC9257/XC9258 Series is Not Recommended for New Designs.
XC9257/XC9258
Series
■GENERAL
DESCRIPTION
COT Control, 1.0A Synchronous Step-Down DC/DC Converters
ETR05040-003
☆GreenOperation-compatible
The XC9257/XC9258 series is a group of synchronous-rectification type DC/DC converters with a built-in P-channel MOS driver
transistor and N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. Output voltage is internally
set in a range from 0.8V to 3.6V (accuracy: ±2.0%) increments of 0.05V. The device provides a high efficiency, stable power supply
with an output current of 1.0A to be configured using only a coil and two capacitors connected externally. Oscillation frequency is
set to 1.2MHz or 6.0MHz can be selected for suiting to your particular application.
As for operation mode HiSAT-COT
(*)
control excellent in transient response, the XC9257 series is PWM control, the XC9258
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).
During stand-by, all circuits are shutdown to reduce current consumption to as low as 1.0μA or less. As for the soft-start function
as fast as 0.3ms in typical for quick turn-on. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS
driver transistor is forced OFF when input voltage becomes 2.00V or lower. The B types integrate C
L
High Speed discharge function
which enables the electric charge at the output capacitor C
L
to be discharged via the internal discharge.
Two types of package SOT-25, USP-6C are available.
(*)
HiSAT-COT is an original Torex term for High Speed Transient Response.
■APPLICATIONS
●Smart
phones / Mobile phones
●Bluetooth
●Portable
game consoles
●Digital
still cameras / Camcorders
●Point-of-Load
(POL)
●Wearable
devices
■FEATURES
Input Voltage Range
Output Voltage Range
Oscillation Frequency
Output Current
Control Methods
:
:
:
:
:
2.5V½5.5V
0.8V½3.6V (±2.0%)
1.2MHz, 6.0MHz
1A
HiSAT-COT Control
100% Duty Cycle
PWM Control (XC9257)
PWM/PFM Auto (XC9258)
Thermal Shutdown
Current Limit (Pendent character)
Short Circuit Protection (Type B)
Soft-Start
UVLO
C
L
High Speed Discharge (Type B)
Ceramic Capacitor
- 40℃
½
+ 105℃
SOT-25, USP-6C
EU RoHS Compliant, Pb Free
Protection Circuits
:
Functions
:
Capacitor
Operating Ambient Temperature
Packages
Environmentally Friendly
:
:
:
:
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
XC9257B18C/XC9258B18C
L =LTF5022T-4R7N2R0(4.7μH)
C
IN
= 10μF(GRM155R61A106M) C
L
= 10μF(GRM155R61A106M)
100
L
V
IN
V
IN
Lx
V
OUT
1.0A
90
80
Efficiency: EFFI (%)
V
IN
=3.7V
70
60
50
40
30
20
10
0
0.1
V
IN
=3.7V
V
IN
=5.0V
CE
C
IN
CE
V
SS
V
OUT
C
L
V
IN
=5.0V
XC9258
XC9257
1
10
100
1000
Output Current: I
OUT
(mA)
1/30
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