XC9262
Series
COT Control, 1.5A Synchronous Step-Down DC/DC Converters
ETR05043-001
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 1.0μ or less. As for the soft-start function
A
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.
The package is the ultra-small 1.2mm × 1.4mm × h0.3mm (LGA-8B01).
(*)
■GENERAL
DESCRIPTION
☆GreenOperation-compatible
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%)
25μ (f
OSC
=3.0MHz)
A
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
PWM/PFM Auto
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℃
LGA-8B01
EU RoHS Compliant, Pb Free
Protection Circuits
Functions
Capacitor
Operating Ambient Temperature
Package
Environmentally Friendly
■TYPICAL
APPLICATION CIRCUIT
L
V
IN
CE
CE
AGND
C
IN
PGND
NC
V
OUT
MODE
V
IN
Lx
V
OUT
1.5A
■TYPICAL
PERFORMANCE
CHARACTERISTICS
XC9262A18D
L = LQM2MPN1R0MGH(1.0
μ
H)
C
IN
= 10
μ
F(GRM155R61A106M) C
L
= 10
μ
F(GRM155R61A106M)
100
90
Efficiency: EFFI (%)
MODE
C
L
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
PFM/PWM
PWM
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XC9262
Series
■PRODUCT
CLASSIFICATION
1) Ordering Information
XC9262①②③④⑤⑥-⑦ PWM Control
⇔PWM/PFM
Automatic switching control
DESIGNATOR
①
ITEM
Type
SYMBOL
A
B
DESCRIPTION
Refer to Selection Guide
Output voltage options
e.g. 1.2V
→ ②=1, ③=2
1.25V
→ ②=1, ③=C
0.05V increments : 0.05=A, 0.15=B, 0.25=C,
0.35=D, 0.45=E, 0.55=F,
0.65=H, 0.75=K, 0.85=L,
0.95=M
1.2MHz
3.0MHz
LGA-8B01 (5,000/Reel)
②③
Output Voltage
08½36
④
⑤⑥-⑦
(*1)
Oscillation Frequency
(*1)
C
D
1R-G
Package (Order Unit)
The “-G” suffix denotes Halogen and Antimony free as well as being fully RoHS compliant.
2) Selection Guide
TYPE
A
B
OUTPUT VOLTAGE
Fixed
Fixed
C
L
AUTO-DISCHARGE
No
Yes
SHORT PROTECTION
(LATCH)
No
Yes
UVLO
Yes
Yes
TYPE
A
B
CHIP ENABLE
Yes
Yes
CURRENT LIMIT
Yes
Yes
SOFT-START TIME
Fixed
Fixed
THERMAL SHUTDOWN
Yes
Yes
3/26
XC9262
Series
■ABSOLUTE
MAXIMUM RATINGS
Ta=25℃
PARAMETER
V
IN
Pin Voltage
Lx Pin Voltage
V
OUT
Pin Voltage
CE Pin Voltage
MODE Pin Voltage
Power Dissipation
LGA-8B01
Operating Ambient Temperature
Storage Temperature
(*1)
(*2)
(*3)
SYMBOL
V
IN
V
Lx
V
OUT
V
CE
V
MDOE
Pd
Topr
Tstg
RATINGS
-0.3½+6.2
-0.3½V
IN
+0.3 or +6.2
(*1)
-0.3½V
IN
+0.3 or +4.0
(*2)
-0.3½+6.2
-0.3½+6.2
1000 (PCB mounted)
(*3)
-40½+105
-55½+125
UNITS
V
V
V
V
V
mW
℃
℃
All voltages are described based on the GND (AGND and PGND) pin.
The maximum value should be either V
IN
+0.3V or +6.2V in the lowest.
The maximum value should be either V
IN
+0.3V or +4.0V in the lowest.
This is a reference data taken by using the test board.
Please refer to page 24 for details.
5/26
FPGA/CPLD
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