900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Torex Semiconductor

XC9510 Datasheet Preview

XC9510 Datasheet

Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator In Series plus Voltage Detector

No Preview Available !

XC9510 Series
October 28, 2003 Ver. 4
Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator In Series plus Voltage Detector
Preliminary
! Input Voltage Range
! Output Voltage Range
! Switching Frequency
! Output Current
! Ultra Small Packages
! Ceramic Capacitor Compatible
2.4V ~ 6.0V
DC/DC 0.9 ~ 4.0V (±2%)
VR 0.9 ~ 4.0V (±2%)
VD 0.9 ~ 5.0V (±2%)
300kHz, 600kHz, 1.2MHz
DC/DC 800mA
VR 600mA
SOP-8
! APPLICATIONS
" CD-R / RW, DVD
" HDD
" PDAs, portable communication modem
" Cellular phones
" Palmtop computers
" Cameras, video recorders
! GENERAL DESCRIPTION
The XC9510 series consists of a step-down DC/DC converter and a
high-speed LDO regulator connected in series with the DC/DC
converter's output. A voltage detector is also built-in. A highly
efficient, low noise output is possible since the regulator is stepped-
down further from the DC/DC output.
The DC/DC converter block incorporates a P-Channel driver transistor
and a synchronous N-Channel switching transistor. With an external
coil, diode and two capacitors, the XC9510 can deliver output currents
up to 800mA at efficiencies over 90%. The XC9510 is designed for
use with small ceramic capacitors.
A choice of three switching frequencies are available, 300 kHz, 600
kHz, and 1.2 MHz.
Output voltage settings for the DC/DC and VR are set-up internally in
0.1V steps within the range of 0.9V to 4.0V (± 2.0%). For the VD, the
range is of 0.9V to 5.0V (± 2.0%).
The soft start time of the series is internally set to 5ms. With the built-
in U.V.L.O. (Under Voltage Lock Out) function, the internal P-channel
driver transistor is forced OFF when input voltage becomes 1.4 V or
lower.
The operational states of the DC/DC and the regulator blocks can be
changed by inputting three kinds of voltage level via the CE/MODE pin.
The functions of the MODE pin can be selected via the external control
pin to switch the DC/DC control mode and the disable pin to shut down
the regulator block.
! FEATURES
Input Voltage Range : 2.4V ~ 6.0V
Load Capacitors :
Ceramic Capacitors Compatible
(Low ESR Capacitors)
VD Function :
Detects output voltage from the VDOUT pin
while sensing either VDD, DCOUT,
or VROUT internally.
Nch Open Drain Output
<DC/DC Converter>
Output Voltage Range : 0.9 ~ 4.0V (Accuracy ±2%)
Output Current :
800mA
Controls :
PWM Control
PWM, PWM / PFM Automatic
Switching External
Oscillation Frequency : 300kHz, 600kHz, 1.2MHz
<Regulator>
Output Voltage Range : 0.9 ~ 4.0V (Accuracy ±2%)
Current Limit
600mA
Dropout Voltage :
240mV @ IOUT=300mA (VOUT=2.8V)
High Ripple Rejection 60dB @1kHz (VOUT=2.8V)
! TYPICAL APPLICATION CIRCUIT
SD
1 LX 8
PGND
2
CE/
MODE
DCOUT
7
L
CL1
DCOUT
3 VDD VROUT 6
CIN
4 VDOUT AGND 5
VROUT
CL2
SOP-8 (Top View)
! TYPICAL PERFORMANCE CHARACTERISTICS
XC9510Hxxxx
DC/DC Efficiency (DCOUT:3.4V, 1.2MHz), VR Efficiency (VROUT:3.0V)
VIN=5.0V, Topr=25OC, L:4.7uH(CDRH4D28C),
CIN:4.7uF(ceramic), CL1:10uF(ceramic), CL2:1uF(ceramic)
100
90
80
70
60
50
40
30
20
10
0
0.1
PWM/PFM switching control
PWM control
1 10 100
DC/DC Output Current IDOUT
VR Output Current IROUT (mA)
1000
Data Sheet
1
Semiconductor Ltd.




Torex Semiconductor

XC9510 Datasheet Preview

XC9510 Datasheet

Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator In Series plus Voltage Detector

No Preview Available !

XC9510 Series
Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator In Series plus Voltage Detector
Preliminary
! PIN CONFIGURATION
PGND 1
CE/MODE 2
VDD 3
VDOUT 4
SOP-8 (Top View)
8 LX
7 DCOUT
6 VROUT
5 AGND
! PIN ASSIGNMENT
PIN
NUMBER
PIN NAME
1 PGND
2 CE/MODE
3 VDD
4 VDOUT
5 AGND
6 VROUT
7 DCOUT
8 LX
FUNCTION
Power Ground
Chip Enable / MODE Switch
Power Supply
VD Output
Analog Ground
VR Output
DC/DC Output
Switch
! SELECTION GUIDE
" Ordering Information
XC9510 123456
The input for the voltage regulator block comes from the DC/DC.
DESIGNATOR SYMBOL
DESCRIPTION
1
23
Control Methods and MODE pins, the VD Sense pin (See the chart below)
Setting voltage and specifications of each DC/DC, VR, and VD (Based on the internal standard)
Oscillation Frequency of DC/DC :
4 3 300kHz
6 600kHz
C 1.2MHz
5 S Package Type :
SOP-8
Device Orientation :
6 R Embossed Tape : Standard feed
L Embossed Tape : Reverse feed
$ Control Methods, CE/MODE Pin, VDSENSE
SERIES
1
DC/DC CONTROL
METHODS
CE/MODE PINS
(H LEVEL)
XC9510
A
B
C
PWM Control
D
E
F
H
PWM, PFM/PWM
K Manual Switch
L
-
VR : OFF
PFM/PWM
Automatic Switch
CE/MODE PINS
(M LEVEL)
-
VR : ON
PWM Control
CE/MODE PINS
(L LEVEL)
Stand-by Mode
(Except for VD)
VD
SENSE
VDD
DCOUT
VROUT
VDD
DCOUT
VROUT
VDD
DCOUT
VROUT
Data Sheet
2
Semiconductor Ltd.


Part Number XC9510
Description Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator In Series plus Voltage Detector
Maker Torex Semiconductor
PDF Download

XC9510 Datasheet PDF





Similar Datasheet

1 XC9510 Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator In Series plus Voltage Detector
Torex Semiconductor
2 XC95108 XC95108 In-System Programmable CPLD
Xilinx
3 XC9511 Synchronous Step-Down DC/DC Converter
Torex Semiconductor
4 XC95144 XC95144 In-System Programmable CPLD
Xilinx
5 XC95144XL High Performance CPLD
Xilinx
6 XC95144XV High-Performance CPLD
Xilinx
7 XC9519 Dual Output Step-Up/Inverting DC/DC Converter
Torex





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy