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XC9262 Datasheet Preview

XC9262 Datasheet

Step-Down DC/DC Converter

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XC9262 Series
ETR05043-004
HiSAT-COT® Control 1.5A Synchronous Step-Down DC/DC Converters
GENERAL DESCRIPTION
Green Operation compatible
The XC9262 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 1.5A to be configured using only a coil and two capacitors connected externally. Oscillation frequency is set to 1.2MHz
or 3.0MHz can be selected for suiting to your particular application.
The operation mode is HISAT-COT (*) control, which has an excellent transient response. PWM control or PWM/PFM auto
switching control can be selected at the MODE pin, and a high-speed response, low ripple, and high efficiency are achieved across
the entire load range (from light loads to heavy loads).
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.
The package is the ultra-small 1.2mm × 1.4mm × h0.3mm (LGA-8B01).
(*) HiSAT-COT is a proprietary high-speed transient response technology for DC/DC converter which was developed by Torex. It is Ideal for the
LSI's that require high precision and high stability power supply voltage.
APPLICATIONS
Communication equipment / Communication
Module (Bluetooth/Wi-Fi/GPS
MCU / FPGA / ASIC for power supplies (POL)
Smart phones / Mobile phones
DSC/Camcorder
Smart card
Active cable / Active optical cable
TYPICAL APPLICATION CIRCUIT
L
VOUT
VIN
1.5A
VIN
Lx
CE
CE
VOUT
AGND
MODE
CIN
MODE
CL
PGND
NC
FEATURES
Input Voltage Range
Output Voltage Range
Quiescent Current
Output Current
Oscillation Frequency
Efficiency
Control Methods
Protection Circuits
Functions
Capacitor
Operating Ambient Temperature
Package
Environmentally Friendly
: 2.7V ~ 5.5V
: 0.8V ~ 3.6V (±2.0%)
: 25μA (fOSC=3.0MHz)
: 1.5A
: 1.2MHz, 3.0MHz
90%
:
(VIN=3.7V, VOUT=1.8V, IOUT=200mA)
: HiSAT-COT Control
: 100% Duty Cycle
: PWM Control
: PWM/PFM Auto
: Thermal Shutdown
: Current Limit (Pendent character)
: Short Circuit Protection (Type B)
: Soft-Start
: UVLO
: CL High Speed Discharge (Type B)
: Ceramic Capacitor
: -40~ 105
: LGA-8B01
: EU RoHS Compliant, Pb Free
TYPICAL PERFORMANCE
CHARACTERIXSC92T62IAC18DS
L = LQM2MPN1R0MGH(1.0μH)
CIN = 10μF(GRM155R61A106M) CL = 10μF(GRM155R61A106M)
100
90
80
70
60
50
40
30
20
10
0
0.1
VIN = 5.0V
VIN = 3.7V
PFM/PWM
PWM
VIN = 5.0V
VIN = 3.7V
1
10
100
1000 10000
Output Current: IOUT (mA)
1/25




Torex

XC9262 Datasheet Preview

XC9262 Datasheet

Step-Down DC/DC Converter

No Preview Available !

XC9262 Series
BLOCK DIAGRAM
1) XC9262 Series Type A
VOUT
AGND
CE
CFB
R1
Phase
Compensation
Error Amp.
Comparator
+
-
-
+
R2
Vref with
Soft Start
CE Control Logic,
UVLO,
Thermal Shutdown
SQ
R
Minimum
On Time
Generator
High Side
Current Limit
Logic
Synch.
Buffer
Driver
VIN
VOUT
PWM/PFM
Selector
* Diodes inside the circuit are an ESD protection diode and a parasitic diode.
VIN
Lx
PGND
MODE
2) XC9262 Series Type B
VOUT
AGND
CE
CFB
R1
Phase
Compensation
Error Amp.
Comparator
+
-
-
+
R2
Vref with
Soft Start
CE Control Logic,
UVLO,
Thermal Shutdown
Short
Protection
High Side
Current Limit
SQ
R
Logic
Minimum
On Time
Generator
VIN
VOUT
Synch.
Buffer
Driver
PWM/PFM
Selector
* Diodes inside the circuit are an ESD protection diode and a parasitic diode.
VIN
Lx
PGND
MODE
2/25



Part Number XC9262
Description Step-Down DC/DC Converter
Maker Torex
Total Page 3 Pages
PDF Download

XC9262 Datasheet PDF





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