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PDF XC6365 Data sheet ( Hoja de datos )

Número de pieza XC6365
Descripción PWM/PFM Switchable Step-Down DC/DC Controllers
Fabricantes TOREX 
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No Preview Available ! XC6365 Hoja de datos, Descripción, Manual

XC6365/XC6366 Series
ETR0501_006
PWM Controlled, PWM/PFM Switchable Step-Down DC/DC Controllers
GreenOperation Compatible
GENERAL DESCRIPTION
The XC6365/XC6366 series are multi-functional step-down DC/DC controllers which have 1A output current capability by
using an externally connected transistor, coil, diode and capacitor.
Output voltage is programmable in 0.1V increments between 1.5V to 6.0V (VOUT) (±2.5% accuracy). Further, with 1.0V of
standard voltage supply internal and using externally connected components, output voltage can be set up freely (FB). With
a 300kHz switching frequency, the size of the external components can be reduced.
Control switches from PWM to PFM during light loads with the XC6366 (PWM/PFM switchable) and the series is highly
efficient from light loads to large output currents.
Soft start time of XC6365/ XC6366A, B series is internally set to 10ms and XC6365/66C, D series regulate soft-start time by
connecting resistors and capacitors externally.
During stand-by time (CE pin "Low" ), current consumption is reduced to less than 0.5μA.
With UVLO internal, the external transistor will be forcibly switched off if used below the stipulated voltage.
APPLICATIONS
E-book Reader / Electronic dictionaries
Smart phones / Mobile phones
Note PCs / Tablet PCs
Digital audio equipments
Multi-function power supplies
FEATURES
Input Voltage Range : 2.2V ~ 10V (VOUT type)
Output Voltage Range : 1.5V ~ 6.0V (0.1V increments) (±2.5%)
Oscillation Frequency : 300kHz (±15%)
Custom products for 180, 500kHz
Output Current
High Efficiency
: More than 1.0A (VIN=5.0V, VOUT=3.0V)
: 92% (TYP.)
Stand-by Capability : ISTB=B 0.5μA (MAX.)
Selection
: Soft-start set-up external
Output voltage set-up internal (VOUT)
Output voltage set-up external (FB)
PWM/PFM Control (XC6366)
Maximum Duty Cycle : 100%
Packages
: SOT-25, USP-6C
Environmentally Friendly : EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE
CHARACTERISTICS
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XC6365 pdf
XC6365/XC6366
Series
ABSOLUTE MAXIMUM RATINGS
PARAMETER
VIN Pin Voltage
VOUT Pin Voltage
FB Pin Voltage
CE Pin Voltage
EXT/ Pin Voltage
EXT/ Pin Current
Power Dissipation
SOT-25
USP-6C
Operating Temperature Range
Storage Temperature Range
SYMBOL
VDD
VOUT
VFB
VCE
VEXT/
IEXT/
Pd
Topr
Tstg
RATINGS
-0.3 ~ +12
-0.3 ~ VIN +0.3
-0.3 ~ VIN +0.3
-0.3 ~ VIN +0.3
-0.3 ~ VIN +0.3
±100
150
100
-30 ~ +80
-40 ~ +125
Ta = 25
UNITS
V
V
V
V
V
mA
mW
Note: Voltage is all ground standardized.
ELECTRICAL CHARACTERISTICS
XC6365A333MR, XC6366A333MR
PARAMETER
Output Voltage
Maximum Input Voltage
UVLO Voltage
(Minimum Operating
Voltage)
Supply Current 1
SYMBOL
VOUT
VIN
VUVLO
IDD1
Supply Current 2
IDD2
Stand-by Current
ISTB
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio
fOSC
MAXDTY
PFMDTY
CE "High" Voltage
VCEH
CE "Low" Voltage
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency
VCEL
REXTBH
REXTBL
EFFI
Soft-Start Time
tSS
(VOUT=3.3V,
CONDITIONS
fOSC=300kHz)
MIN. TYP.
3.218 3.300
10.0 -
Same as IDD1,
Voltage which EXT/pin voltage holding “H” level
0.9
-
No external components, CE=VDD, VOUT=0V
No external components,
XC6365
CE=VOUT=VDD
XC6366
No external components, CE=VOUT=0V
Measuring of EXT/ waveform,
VIN=output voltage + 0.1V
No load (XC6366 only)
No external components, VOUT=0V,
Voltage which EXT/pin voltage holding “L” level
No external components, VOUT=0V,
Voltage which EXT/pin voltage holding “H” level
Same as IDD2, VEXT/=VDD-0.4V
Same as IDD1, VEXT/=0.4V
Use of a XP162A12A6 transistor
recommended
Connect RSS, CSS, CE, 0V3.0V
(When VIN3.0V, VIN=3.0V)
-
-
-
-
255
100
15
0.65
-
-
-
-
5
57
57
15
-
300
-
25
-
-
16
14
92
10
Ta=25
MAX. UNITS
3.383 V
-V
2.2 V
102 μA
102 μA
27 μA
0.5 μA
345 kHz
-%
35 %
-V
0.20 V
22 μA
19 μA
-%
20 ms
Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 5.0V, IOUT = 220mA
2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ
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XC6365 arduino
XC6365/XC6366
Series
NOTES ON USE
1. Take ample care to ensure that none of the IC's, nor the external component's, absolute maximum ratings are exceeded.
2. Be extremely careful when selecting parts and do not limit your reference to the specifications and characteristics for the
DC/DC converter alone. The IC also depends, to a great extent, upon the external components.
3. Arrange the peripherals in the environs of the IC. In order to reduce wiring impedance, use short, thick wires. In particular,
wire the load capacitor as close as possible and strengthen the ground wiring sufficiently.
4. Ground current during switching may cause the IC's operations to become unstable due to changes in ground voltage, so
please strengthen the IC's GND pin surroundings.
External Components
1. Setting soft start time
To set a longer soft start time, please use XC6365C or XC6365D series which soft start function is externally set up.
For the measurement of soft start time TSS, the time is needed to be between the maximum and the minimum value indicated
in the chart below. Please set a soft start capacitor CSS according to the application.
2. Setting RFB1 and CFB
fzfb=1 ÷ (2 π × CFB × RFB1)
As the combination of RFB1 and CFB enable to set fzfb between 0.5kHz to 20kHz, within the realm of fzfb=0.5kHz to
fzfb=20kHz as the chart below can be effective.
Under normal condition, please set the combination to configure around fzfb=10kHz.
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