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PDF XC9505 Data sheet ( Hoja de datos )
| Número de pieza | XC9505 | |
| Descripción | Step-up / Inverting DC/DC Controller ICs | |
| Fabricantes | Torex Semiconductor | |
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Hay una vista previa y un enlace de descarga de XC9505 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
May 29, 2003 Ver 4
" 2ch DC/DC Controller (Step-Down + Inverting)
" Input Voltage Range 2.0V ~ 10.0V
" Output Voltage Externally Set-Up
" Oscillation Frequency 180kHz (±15%)
" Max Duty Ratio Step-Down : 100%
Inverting : 80% (Typ.)
" PWM, PWM/PFM Switching Control
" MSOP-10 Package
! Applications
# PDAs
# Palm Top Computers
# Portable Audio Systems
# Various Multi-function Power Supplies
! Features
2ch. DC/DC Controllers
Output 1: Step-Down DC/DC Controller
Output 2: Inverting DC/DC Controller
Power Supply Voltage Range 2.0V ~ 10V
! General Description
The XC9505 series are PWM control, PWM/PFM switching, 2
channel (step-down and inverting) DC/DC controller ICs.
With 0.9V of standard voltage supply internal, and using
externally connected components, the output 1 voltage (step-
down DC/DC controller) can be set freely within a range of 0.9V
~ 6.0V. Since output 2 (inverting DC/DC controller) has a
built-in 0.9V reference voltage (accuracy ±2), a negative voltage
can be set with the external components.
With a 180kHz frequency, the size of the external components
can be reduced. Switching frequencies of 300kHz and 500kHz
are also available as custom-designed products.
The control of the XC9505 series can be switched between
PWM control and PWM/PFM automatic switching control using
external signals. Control switches from PWM to PFM during
light loads when automatic switching is selected and the series
is highly efficient from light loads through to large output
currents. Noise is easily reduced with PWM control since the
frequency is fixed.
The series gives freedom of control selection so that control
suited to the application can be selected.
Soft-start time is internally set to 10msec (output 1)
which offers protection against rush currents and voltage
overshoot when the power is switched on .
Output Voltage Range
Output 1:
0.9V ~ 6.0V
(Step-Down DC/DC Controller) Can be set freely with 0.9V(±
2.0%) of reference voltage
supply & external components
Output 2:
(Inverting DC/DC Controller)
-30V ~ 0V
Can be set freely with 0.9V(±
2.0%) of reference voltage &
external components
Oscillation Frequency
180kHz ±15%
Output Current
300kHz & 500kHz are available as custom
Output 1 : more than 1000mA (VIN=5.0V,VOUT=3.3V)
Output 2 : more than - 100mA (VIN=5.0V,VOUT=- 7.5V)
Soft-Start Internally Set-Up (Output 1)
Stand-By Current
3.0µA (MAX)
! Typical Perfomance Characteristics
XC9505B092A (180kHz,VOUT1:3.3V,VOUT2:-7.5V)
Tr1,Tr2:XP162A12A6P, CL1, CL2=92uF(Tantalum),SD1:CMS02
SD2:MA2Q737,L1=47uH(CDRH6D28),L2=22uH(CDRH5D28)
100
90 PWM/PFM Switching Control
80
70
60
50 VOUT2:-7.5V
40 VOUT1:3.3V
30
20 PWM Control
10
0 VIN=5.0V
0.1 1 10 100 1000
! Typical Application
( XC9505B092A Input: 2 Cell, Output 1: 3.3V, Output 2: -7.5V )
Output Current 1,2 IOUT1,2 (mA)
V OUT1 : 3. 3V
L1:22uH
C D R H 5D 28
Tr1:Pch M OSFET
XP162A12A6P
Tr2:Pch M OSFET
XP162A12A6P
SD 2
:M A2Q737
V OUT2 :-7.5V
SD 1
:M A2Q737
RF B11 CFB1
:2 00k Ω :62pF
CL 1 :47uF
RF B 12
: 75k Ω
VPWM 1
V EN 1
V IN
= 5.0V
C IN
:47uF
1EXT 1/ EXT 2/10
2VDD
GND 9
3FB 1
FB2 8
4PW M1 P W M27
5EN1
E N2 6
L2:22uH
CDRH5D28 CL 2 :47uF
RF B21
:150 kΩ
CF B1
:88pF
VPWM 2
V EN 2
RF B22
:43 kΩ
1
1 page  
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Electrical Characteristics
XC9505B093A
Common Characteristics
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage
VDD
Output Voltage Range
(note 1)
VDD ≥ 2.0V, IOUT1, 2=1mA
VOUTSET
Supply Current 1
IDD1 FB=0V, FB2=1.2V
Supply Current 1-1
IDD1-1 EN1=3.0V, EN2=0, FB1=0V
Supply Current 1-2
IDD1-2 EN2=3.0V, EN1=0, FB2=1.2V
Supply Current 1-3
IDD1-3 FB1=0V, FB2=0V
Supply Current 1-4
IDD1-4 FB1=1.2V, FB2=1.2V
Supply Current 2
IDD2 FB1=1.2V, FB2=0V
Stand-by Current
ISTB Same as IDD1, EN1=EN2=0V
Oscillation Frequency
FOSC Same as IDD1
EN1, 2 "High" Voltage
VENH FB1=0V, FB2=3.0V
EN1, 2 "Low" Voltage
VENL FB1=0V, FB2=3.0V
EN1, 2 "High" Current
IENH FB1=3.0V, FB2=0V
EN1, 2 "Low" Current
IENL EN1, 2=0V, FB1=3.0V, FB2=0V
PWM1, 2 "High" Current IPWMH FB1=3.0V, FB2=0V, PWM1, 2=3.0V
PWM1, 2 "Low" Current IPWML FB1=3.0V, FB2=0V, PWM1, 2=0V
FB1, 2 "High" Current
IFBH FB1=3.0V, FB2=0.8V
FB1, 2 "Low" Current
VFBL FB1=1.0V, FB2=0V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
VOUT1
VOUT2
MIN.
2.0
0.9
-
-
-
-
-
-
-
-
255
0.65
-
-
-
-
-
-
-
TYP.
-
-
-
100
60
80
80
100
80
1.0
300
-
-
-
-
-
-
-
-
MAX.
10.0
VIN
0.0
190
120
150
140
180
150
3.0
345
-
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
UNITS
V
V
µA
µA
µA
µA
µA
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
Ta=25OC
TEST CIRCUIT
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Output 1 Characteristics
Step-Down Controller
PARAMETER
SYMBOL
CONDITIONS
MIN. TYP. MAX.
FB1 Voltage
VFB1 VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
Minimum Operating Voltage VINmin1
- - 2.0
Maximum Duty Ratio1 MINDTY1 Same as IDD1
- - 100
Minimum Duty Ratio1 MAXDTY2 Same as IDD2
---
PFM Duty Ratio1
PFMDTY1 No Load, VPWM1=0V
22 30 38
Efficiency1 (note 2)
EFFI1 IOUT1= 250mA, Pch MOSFET: XP162A12A6P - 92 -
Soft-Start Time1
TSS1 VOUT1 × 0.95V, EN1=0V→0.65V
5.0 10.0 20.0
EXT1 "High" ON Resistance REXTBH1 FB1=0V, EXT1=VDD -0.4V
- 28 47
EXT1 "Low" ON Resistance REXTBL1 EN1=FB1=1.2V, EXT1=0.4V
- 22 30
PWM1 "High" Voltage VPWMH1 No Load
0.65 -
-
PWM1 "Low" Voltage VPWML1 No Load
- - 0.20
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
UNITS
V
V
%
%
%
%
msec
Ω
Ω
V
V
Ta=25OC
TEST CIRCUIT
3
1
2
2
4
4
4
5
5
4
4
Output 2 Characteristics
Inverting DC/DC Controller
PARAMETER
SYMBOL
CONDITIONS
MIN. TYP. MAX.
FB2 Voltage
VFB2 VDD=3.0V
0.882 0.900 0.918
Operation Start-up
Voltage2
VST1-2 IOUT2=1.0mA, RFB11=200kΩ, RFB12=75kΩ
RFB21=17.5kΩ, RFB22=10kΩ, EN1=PWM1=3.0V
-
- 2.0
Oscillation Start-up Voltage2 VST2-2 FB2=1.2V
- - 2.0
Maximum Duty Ratio2 MAXDTY2 Same as IDD1
75 80 87
Minimum Duty Ratio2 MINDTY3 Same as IDD2
- -0
PFM Duty Ratio2
PFMDTY2 No Load, VPWM2=0V
22 30 38
Efficiency2 (Note 2)
EFFI2 IOUT2= -150mA, Pch MOSFET: XP162A12A6P - 75 -
EXT2 "High" ON Resistance REXTBH2 EN2=FB2= 0V, EXT2=VDD-0.4V
- 28 47
EXT2 "Low" ON Resistance REXTBL2 FB2=3.0V, EXT2=0.4V
- 22 30
PWM2 "High" Voltage VPWMH2 No Load
0.65 -
-
PWM2 "Low" Voltage VPWML2 No Load
- - 0.20
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=3.0V
UNITS
V
V
V
%
%
%
%
Ω
Ω
V
V
Ta=25OC
TEST CIRCUIT
2
1
2
2
2
6
6
5
5
6
6
3) Please be careful not to exceed the breakdown voltage level of the peripheral parts.
4) EFFI1, 2={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
5
5 Page 
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Test Circuits
Circuit 1
VOUT1
L1
RL1
RFB11
+
47mF
RFB12
SD1
CFB1
PNP
Tr
2200pF
1mF
VPWM1
VEN1
VIN
+
CIN
1 EXT1/
2 VDD
3 FB1
4 PWM1
5 EN1
EXT2/ 10
GND 9
FB2 8
PWM2 7
EN2 6
PNP
Tr
510W
2200pF
VPPWWM22
VEN1
RFB22
CFFB2
RFBB2211
SD2
L2 CL2
+
VOUT2
RLL2
Circuit 4
VOUT1
L1
A
CL1
200k
W
V
RL
75kW
62pF
Pch
MOSFET1
SBD1
1 EXT1
2 VDD
3 FB1
4 PWM1
5 EN1
EXT2 10
GND 9
FB2 8
PWM2 7
EN2 6
A
VIN
CIN
Circuit 2
Circuit 5
OSC
A
1mF
AA
VDD
VFB1
VPWM1
11 EEXXTT11/
EXT2/ 10
2 VDD
GND 9
3 FB1
FB2 8
4 PWM1
PWM2 7
A 5 EN1
EN2 6
VEN1
A AA
VEN2
VPW M2
VFB2
OSC
Circuit 3
VOUT1
L1
A
V
RL
CL1
Pch
MOSFET1
SBD1
1 EXT1
2 VDD
3 FB1
4 PWM1
5 EN1
EXT2 10
GND 9
FB2 8
PWM2 7
EN2 6
A
VIN
CIN
OSC
Rp
1mF
VDD
VPWMM1
1 EXT1
2 VDD
3 FB1
4 PWM1
5 EN1
VEXT1
VFB1
VEN1
EXT2 10
GND 9
FB2 8
PWM2 7
EN2 6
VPW M2
VEN2
VFFBB22
Rp
VEXT2
OSC
Circuit 6
+
CIN
A
VIN
1 EXT1
2 VDD
3 FB1
4 PWM1
5 EN1
EXT2/ 10
GND 9
FB2 8
PWM2 7
EN2 6
Pch
MOSFET
L2
OSC
VEN2
VPW M2
SD2
CL2
+
20kW
20kW
4.8V
VOUT22
A
CFB2
V
RLL
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet XC9505.PDF ] | |
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