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參數(shù)資料
| 型號： | XC9303B93KR |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 英文描述： | Step-Up & Down DC / DC Controller ICs |
| 中文描述： | 升壓 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 244K |
| 代理商： | XC9303B93KR |
July 3, 2003 Ver. 1
!
Synchronous Step-up & down DC / DC Controller
!
Input Voltage Range
!
Output Voltage Externally Set-up
!
Oscillation Frequency
!
Maximum Duty Cycle
!
PWM, PWM/PFM Swiching Control
!
Syncronous Rectification Control
!
High Efficiency
!
Small MSOP-8 packaging
"
APPLICATIONS
2.0V ~ 10.0V
#
PDAs
300 kHz (Accuracy
±
15%)
78% (TYP.)
#
Palmtop computers
#
Portable Audio
84% (TYP.)
#
Various power supplies
"
GENERAL DESCRIPTION
The XC9303 series is highly efficient, synchronous PWM, PWM/PFM
switching step-up & down DC/DC controller ICs. A versatile, large
output current and high efficiency, step-up/down DC/DC controller
can be realized using only basic external components - transistors,
coil, diode, capacitors, and resistors for detecting voltages. High
efficiency is obtained through the use of a synchronous rectification
topology. The operation of the XC9303 series can be switched
between synchronous PWM and synchronous PWM/PFM (auto-
switching) externally using PWM pin. In PWM/PFM mode the
XC9303 automatically switches from PWM to PFM during light loads
and high efficiencies can be achieved over a wide range of output
loads conditions. Output noise can be easily reduced with PWM
control since the frequency is fixed.
"
FEATURES
Input Voltage Range
: 2.0V ~ 10V
Output Voltage Range
: 2.0V ~ 6.0V
Can be set freely with 0.9V
(
±
2.0%) of reference voltage supply
and external components.
Oscillation Frequency
: 300kHz
±
15%
Output Current
: More than 800mA
(VIN = 4.2V, VOUT=3.3V)
Stand-By Function
: 3.0
μ
A (MAX.)
Package
: MSOP-8
Soft-start time
: 10 ms (internally set)
"
TYPICAL APPLICATION CIRCUIT
<XC9303B093K, VOUT:3.3V)
"
TYPICAL PERFORMANCE CHARACTERISTICS
$
Efficiency vs. Output Current
1
The XC9303 has a 0.9V (±2.0%) internal voltage supply and using
externally connected components, output voltage can be set freely
between 2.0V to 6.0V. With an internal 300kHz switching frequency
smaller external components can be used. Soft-start time is
internally set to 10msec and offers protection against in-rush currents
when the power is switched on and prevents voltage overshoot.
XC9303 Series
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303B093K(300kHz, V
OUT
=3.3V)
0
10
20
30
40
50
60
70
80
90
100
0.1
1
10
100
1000
10000
Output Current I
OUT
(mA)
E
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
VIN=2.7V
4.2V
PWM Control
SD:CMS02
VDD
EXT1
PWM
CE
GND
EXT2
FB
PWM
CE
L:22uH
CDRH127/LD
Tr1:Pch
MOSFET
:CPH6315
RFB
:75k
Tr2:Nch
:CPH3409
MOSFET
CIN:47uF
VIN:2.0V~10V
CL:
47uFX2
RFB
:200 k
CFB
:62pF
VOUT:3.3V
Tr3:Nch
:CPH3409
MOSFET
NC
Semiconductor Ltd.
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相關代理商/技術參數(shù) |
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|---|---|
| XC9303E093KL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs |
| XC9303E093KR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs |
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