XC9260/XC9261
Series
ETR05042-001
COT Control, 1.5A Synchronous Step-Down DC/DC Converters
■GENERAL
DESCRIPTION
☆GreenOperation-compatible
The XC9260/XC9261 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.
(*)
As for operation mode HiSAT-COT control excellent in transient response, the XC9260 series is PWM control, the XC9261
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-89-5, USP-6C are available.
(*)
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
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
2.7V½5.5V
0.8V½3.6V (±2.0%)
25μA (f
OSC
=3.0MHz)
1.5A
1.2MHz, 3.0MHz
90%
(V
IN
=3.7V, V
OUT
=1.8V, I
OUT
=200mA)
HiSAT-COT Control
100% Duty Cycle
PWM Control (XC9260)
PWM/PFM Auto (XC9261)
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-89-5, USP-6C
EU RoHS Compliant, Pb Free
Protection Circuits
Functions
Capacitor
Operating Ambient Temperature
Packages
Environmentally Friendly
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
XC9260A18D / XC9261A18D
L = LQM2MPN1R0MGH(1.0
μ
H)
C
IN
=10
μ
F(GRM155R61A106M) C
L
=10
μ
F(GRM155R61A106M)
L
V
IN
CE
CE
PGND
C
IN
V
OUT
AGND
C
L
V
IN
Lx
V
OUT
1.5A
100
90
Efficiency: EFFI (%)
80
70
60
50
40
30
20
10
0
0.1
1
10
100
1000
10000
Output Current: I
OUT
(mA)
VIN = 5.0V
VIN = 3.7V
VIN = 5.0V
VIN = 3.7V
XC9261
XC9260
1/28
TOREX [ TOREX SEMICONDUCTOR ]
