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XC6367F Datasheet

  • XC6367F

  • PWM Controlled, PWM/PFM Switchable Step-Up DC/DC Controllers

  • 28頁

  • TOREX

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Series
PWM Controlled, PWM/PFM Switchable Step鈥怳p DC/DC Controllers
NInput
Voltage Range : 0.9~10.0V
NOutput
Voltage Range : 1.5~6.5V(鹵2.5%)
NOscillator
Frequency : 300kHz(鹵15%)
NPWM/PFM
Switching Control (XC6368)
NHigh
Efficiency
NSOT-25
Package
: 84% (typ.)
鈻燗pplications
GElectronic
Information Organizers
GPalmtops
GCellular
and portable phones
GPortable
Audio Systems
GVarious
Multi-function Power Supplies
4
鈻燜eatures
Input voltage range
: 0.9V~10V
Operating voltage range
: 2.0V~10V
Output voltage range
: 1.5V~6.5V programmable in 0.1V
steps (鹵2.5%)
Oscillator frequency
: 300, 100kHz (鹵15%)
Custom products for 180, 500kHz
Output Current
: 200mA + (V
IN
=1.8V, V
OUT
=3.3V)
High Efficiency
: 84% (typ.)
Stand-by capability
: I
STB
=0.5A (max.)
Selection
: Soft start set-up external
Output Voltage set-up internal (V
OUT
)
Output Voltage set-up external (FB)
Package
: SOT-25
鈻燝eneral Description
The XC6367/68 series are multi-functional step-up DC/DC converter
controllers with built-in high speed, low ON resistance drivers.
Large output currents are possible using an externally connected
transistor, coil, diode and condenser.
Output voltage is selectable in 0.1 steps within a 1.5V ~ 6.5V range
(鹵2.5%). For output voltages outside this range, we recommend this FB
version, which has a 1.0V internal reference voltage. Using this version,
the required output voltage can be set-up using 2 external resistors.
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 XC6368
(PWM/PFM switchable) and the series is highly efficient from light loads
to large output currents.
Soft start time of XC6367/68A, B, and C series is internally set to
10msec and XC6367/68C, D, and F series regulate soft start time by
connecting resistors and capacitors exteranally.
During stand-by time (CE pin "Low"), current consumption is reduced to
less than 0.5碌A.
鈻燭ypical Application Circuit
SD
L
V
DD
V
OUT
鈻燭ypical Performance
Characteristic
XC6368A333MR (300kHz,3.3V)
L=22渭H(CR54), C
L
=94渭F(Tantalum)
SD:MA737, Tr:XP161A1355P
EXT
Tr
V
IN
C
IN
GND
CE
100
C
L
錛圱antalum錛?/div>
R
L
2.7V
V
OUT
Efficiency:EFFI (%)
80
60
40
20
0
0.1
1
10
100
1000
V
IN
=0.9V 1.2V
1.5V 1.8V
Output Current:I
OUT
(mA)
407

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