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XC6405 Datasheet

  • XC6405

  • High Current, High Speed LDO Regulators, Voltage Detector Fu...

  • 555.24KB

  • 54页

  • TOREX

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XC6405 Series
High Current, High Speed LDO Regulators,
Voltage Detector Function
October 2, 2003 V6
!
Low Power Consumption
!
Dropout Voltage
!
Maximum Output Current
!
!
!
!
Highly Accurate
VR Setting Output Voltage Range
Detect Voltage Setting Range
Low ESR capacitor compatible
: 90
碌A
(TYP.)
: 200mV @ 100mA
: 400mV @ 200mA
!
APPLICATIONS
"
"
"
"
"
"
CD-ROM, CD-R/RW drive
DVD drive
HDD drive
Cameras, Video recorders
Portable AV equipment
Battery powered equipment
: more than 500mA (600mA limit)
(2.5V<VROUT<4.9V)
:
卤
2%
: 0.9V ~ 5.1V
: 0.9V ~ 5.5V (V
IN
: >2.0V)
!
GENERAL DESCRIPTION
The XC6405 series are precise, low noise, high speed, high current,
positive voltage low dropout regulators with built-in voltage detector.
They are fabricated using Torex鈥檚 CMOS process. Performance features
of the series includes high ripple rejection and low dropout voltage, and
the series features a voltage reference, an error amplifier, a current
limiter and a phase compensation circuit plus a driver transistor.
Detect voltage is selectable in 100mV increments within the range of
0.9V to 5.5V and the LDO output voltage is selectable within a range of
0.9V to 5.1V, also in 100mV increments.
The series is also compatible with low ESR ceramic capacitors which
give added output stability. This stability can be maintained even during
load fluctuations due to the excellent transient response of the series.
The current limiter's foldback circuit also operates as a short circuit
protection for the output current limiter and the output pin.
The series provides options to the user to select from a variety of circuit
features, such as detector monitoring, detector output logic, CE and EN
pin input logic, internal pull-up / down resistance, and power ready.
The IC's internal regulator circuit can be placed in stand-by mode via the
EN function (XC6405 A to C series). The whole IC can be put in to
stand-by mode via the CE function with the XC6405D series (semi-
custom). In the stand-by mode, power consumption is greatly reduced.
The XC6405 A and B series features the toggle operation function. The
regulator output can be OFF when the XC6405B series detects voltage
(semi-custom).
The XC6405E series can monitor another power source by using the
VSEN pin (semi-custom).
The XC6405F series can delay the detector output: the delay time can be
controlled by the use of an external capacitor (semi-custom).
!
FEATURES
Maximum Output Current
more than 500mA
(600mA limit)
(2.5V<VROUT<4.9V)
Dropout Voltage
Operating Voltage Range
VR Setting Output Voltage Range
200mV (IROUT=100mA)
2.0V ~ 6.0V
0.9V ~ 5.1V
(100mV step,
卤
2%)
Detect Voltage Setting Range
0.9V ~ 5.5V
(100mV step,
卤
2%)
When monitoring VIN
VR.VD Temperature Coefficient
Low Power Consumption
High Ripple Rejection
Ultra Small Packages
more than 2.0V
卤100ppm/
O
C (TYP.)
90碌A (TYP.)
65dB (@10kHz)
SOT-25 (SOT-23-5)
SOT-89-5
Operating Temperature Range
Low ESR Capacitor Compatible
- 40 ~ 85
O
C
!
TYPICAL APPLICATION CIRCUITS
Rpull-up
200K
CIN
1uF
Rpull-up
200K
1
2
VIN
VSEN
VSS
VROUT
VDOUT
4
5
CIN
1uF
1
2
VROUT
3
VIN
VSS
VROUT
VDOUT
VDOUT
4
Cd
Cd
5
Rpull-up
200K
CIN
1uF
1
2
VIN
EN/CE
VSS
VROUT
VDOUT
5
VROUT
3
CL
4
VROUT
3
CL
XC6405A ~ D Series
XC6405E Series
XC6405F Series
Semiconductor Ltd.
Data Sheet
1

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