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參數(shù)資料
| 型號： | XC910607 |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 英文描述： | PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| 中文描述： | PWM控制，PWM / PFM切換控制，升壓DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 81K |
| 代理商： | XC910607 |
Preliminary
May 23, 2002 Ver. 1-1
Externally Applied Reference Voltage (Vref)
Ceramic Capacitors Compatible
Input Voltage Range: 0.9V~10.0V
Oscillation Frequency: 300kHz, 100kHz (±15%)
PWM Control (XC9106)
PWM/PFM Automatic Switching Control (XC9107)
SOT-25 / USP-6B Package
Applications
z
Power Supply for LCD
z
PDAs
z
Cellular Phones
z
Palmtop Computers
z
Portable Audio Systems
z
Various Multi-function Power Supplies
General Description
The XC9106 / 07 series are step-up DC/DC controller ICs with
an externally applied reference voltage (Vref).
Output voltage will be set with external resistors (RFB1 and 2)
and Vref value. The series make it easy to control output
voltage externally and are suited to software applications that
need to vary voltage, such as LCD power supply for PDA.
Output will be stable no matter which load capacitors are used
but if a low ESR capacitor is used, R
SENSE
of about 0.1
will
be required and phase compensation will be achieved. This
makes the use of ceramic capacitors much easier, and allows
for lower output ripple and reduced PCB area requirements.
Tantalum and electrolytic capacitors can also be used, in which
case, R
SENSE
becomes unnecessary.
Oscillation frequencies of high clock, low ripple 300kHz and low
supply current 100kHz are available.
The XC9107 series are PWM/PFM automatic switching
controlled. Control switches from PWM to PFM during light
loads with the XC9107 and the series is highly efficient from
light loads to large output currents. By bringing the whole circuit
down while the series is in the stand-by mode (CE/PWM pin :
low), supply current can be reduced to less than 1.0
μ
A.
Features
Input Voltage Range:
Power Supply Voltage Range:
1.8V ~ 10.0V and more than Vref+0.7V
V
REF
Input Range:
0.8V ~ 2.5V (
±
2.0%)
Output Voltage:
Vref x external split resistor ratio
V
OUT
=Vref
x (RFB1+RFB2)/RFB2
Oscillation Frequency:
300kHz, 100kHz
±
15%
Output Current:
more than 30mA
(V
IN
=3.3V, V
OUT
=20V, when peripheral
components are used as in the circuits
below .)
0.9V ~ 10.0V
Controls:
PWM (XC9106)
PWM/PFM auto-switching (XC9107)
85% (TYP.)
ISTB=1
.
0
μ
A (MAX.)
Low ESR capacitors compatible
SOT-25, USP-6B
High Efficiency:
Stand-by Current:
Load Capacitors:
Packages:
Typical Application Circuit
Electrical Characteristics
XC9107D003MR
1
XC9106 / 07 Series
PWM Control, PWM/PFM Switching Control,
Step-up DC/DC Converters
Externally Applied Reference Voltage (Vref)
* R
SENSE
is of no use in light load (uncontinuous mode)
applications such as a small LCD, even using ceramic capacitor.
0
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Vref (V)
V
O
(
0
5
10
15
20
25
30
0.1
1
10
100
1000
I
OUT
(mA)
V
O
2.0V
Vref=0.8V
1.5V
2.5V
Circuit as left
V
DD
=V
IN
=3.3V, I
OUT
=30mA
XC9107D003MR
Circuit as left
V
DD
=V
IN
=3.3V
L : 10
μ
H
SD : MA737
CFB : 27pF
Nch Power
MOS FET
2SK2159
V
IN
= 3.3V
RFB2 :
30k
RFB1 :
270k
V
OUT
= 8V~25V
I
OUT
= 30mA
D/A converter
Ceramic CL :
10
μ
F
CE/Vref
CIN
RSENSE : 100m
for Ceramic CL
*
0.8V~2.5V
3
2
1
5
4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XC9106 | PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9107D3MR | PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9107D1DL | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT08; Number of Contacts:3; Connector Shell Size:8; Connecting Termination:Solder; Circular Shell Style:Right Angle Plug |
| XC9106D | PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9107D | Capacitors, Ceramic Disc & Plate; Capacitance:200pF; Capacitance Tolerance: 5%; Series:CEC; Voltage Rating:50VDC; Capacitor Dielectric Material:Ceramic; Termination:Radial Leaded; Dielectric Characteristic:NP0 RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XC9106D | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D1DL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D1DR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D1ML | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D1MR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
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