XC9258 Datasheet PDF - Torex Semiconductor
Part Number | XC9258 | |
Description | 1.0A Synchronous Step-Down DC/DC Converters | |
Manufacturers | Torex Semiconductor | |
Logo | ||
There is a preview and XC9258 download ( pdf file ) link at the bottom of this page. Total 27 Pages |
Preview 1 page No Preview Available ! XC9257/XC9258 Series
COT Control, 1.0A Synchronous Step-Down DC/DC Converters
ETR05040-001
GENERAL DESCRIPTION
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 CL High Speed discharge
function which enables the electric charge at the output capacitor CL 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
FEATURES
Smart phones / Mobile phones
Input Voltage Range
Output Voltage Range
: 2.5V 5.5V
: 0.8V 3.6V (±2.0%)
Bluetooth
Oscillation Frequency
: 1.2MHz, 6.0MHz
Portable game consoles
Digital still cameras / Camcorders
Output Current
Control Methods
: 1A
: HiSAT-COT Control
100% Duty Cycle
Point-of-Load (POL)
Wearable devices
Protection Circuits
PWM Control (XC9257)
PWM/PFM Auto (XC9258)
: Thermal Shutdown
Current Limit (Pendent character)
Short Circuit Protection (Type B)
Functions
: Soft-Start
UVLO
CL High Speed Discharge (Type B)
Capacitor
: Ceramic Capacitor
Operating Ambient Temperature : - 40
+ 105
Packages
: SOT-25, USP-6C
Environmentally Friendly
: EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUIT
TYPICAL PERFORMANCE
CHARACTERISTICS
XC9257B18C/XC9258B18C
L =LTF5022T-4R7N2R0(4.7 H)
CIN = 10 F(GRM155R61A106M) CL = 10
100
F(GRM155R61A106M
90
80
70
60
50
40
30
20
10
0
0.1
1 10 100
Output Current: IOUT (mA)
1000
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ABSOLUTE MAXIMUM RATINGS
PARAMETER
VIN Pin Voltage
SYMBOL
VIN
RATINGS
-0.3 +6.2
Ta=25
UNITS
V
Lx Pin Voltage
VLx
-0.3 VIN+0.3 or +6.2(*1)
V
VOUT Pin Voltage
VOUT
-0.3 VIN+0.3 or +4.0(*2)
CE Pin Voltage
Power Dissipation
SOT-25
USP-6C
VCE
Pd
-0.3 +6.2
250
600 (PCB mounted)
120
1000 (PCB mounted)
Operating Ambient Temperature Topr
-40 +105
Storage Temperature
Tstg
-55 +125
* All voltages are described based on the GND (VSS) pin.
(*1) The maximum value should be either VIN+0.3V or +6.2V in the lowest.
(*2) The maximum value should be either VIN+0.3V or +4.0V in the lowest.
V
V
mW
XC9257/XC9258
Series
5/27
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for XC9258 electronic component. |
Information | Total 27 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ XC9258.PDF Datasheet ] |
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