XC9262 Datasheet, PDF (1/26 Pages) Torex Semiconductor – COT Control, 1.5A Synchronous Step-Down DC/DC Converters

XC9262 Series
ETR05043-001
COT Control, 1.5A Synchronous Step-Down DC/DC Converters
☆GreenOperation-compatible
■GENERAL DESCRIPTION
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 an original Torex term for High Speed Transient Response.}
■APPLICATIONS
●Mobile phones
●Bluetooth headsets
●Smart phones, Personal digital assistance
●Portable game consoles
●Digital still cameras, Camcorders
●Codeless phones
●Point-of-Load (POL)
■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 APPLICATION CIRCUIT
L
VOUT
VIN
1.5A
VIN
Lx
CE
CE
VOUT
AGND
MODE
CIN
MODE
CL
PGND
NC
■TYPICAL PERFORMANCE
CHARACTERISTICS
XC9262A18D
L = LQM2MPN1R0MGH(1.0μH)
C_IN = 10μF(GRM155R61A106M) C_L = 10μF(GRM155R61A106M)
100
90
80
70
60
VIN = 5.0V
50
VIN = 3.7V
PFM/PWM
PWM
40
30
20
VIN = 5.0V
VIN = 3.7V
10
0
0.1
1
10
100 1000 10000
Output Current: I_OUT (mA)
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