XC6403/XC6404Series
ETR1002_003
High Current, High Speed LDO Regulators, Voltage Detector Function
■GENERAL DESCRIPTION
The XC6403/04 series are highly precise, low noise, high current, positive voltage low dropout regulators with built-in voltage
detector. They are fabricated using Torex’s 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 5.6V and the LDO output voltage is selectable
within a range of 0.9V to 5.6V (XC6403) 0.9V to 5.1V (XC6404), 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
(XC6403/04 A to C series). The whole IC can be put in to stand-by mode via the CE function with the XC6403/04D series
(semi-custom). In the stand-by mode, power consumption is greatly reduced. The XC6403/04A and B series features the
toggle operation function. The regulator output can be OFF when the XC6403/04B series detects voltage (semi-custom). The
XC6403/04E series can monitor another power source by using the VSEN pin (semi-custom). The XC6403/04F series can
delay the detector output: the delay time can be controlled by the use of an external capacitor (semi-custom).
■APPLICATIONS
●CD-ROM, CD-R / RW drive
●DVD drive
■FEATURES
Maximum
Output Current
: More than 300mA (380mA limit)
(1.8≦VROUT≦5.3V) [XC6403]
More than 500mA (600mA limit)
(2.5V≦VROUT≦4.9V) [XC6404]
: 200mV @ 100mA
●HDD drive
Dropout Voltage
Operating Voltage Range : 2.0V ~ 6.0V
●Cameras, Video recorders
●Portable AV equipment
●Battery powered equipment
VR Output Voltage
: 0.9V ~ 5.6V [XC6403]
0.9V ~ 5.1V [XC6404]
: 0.9V ~ 5.5V (±2%)
Detect Voltage
More than 2.0V (VIN sensing)
VR.VD Temp. Coefficient : ±100ppm/℃(TYP.)
Low Power Consumption: 35μA (TYP.)
High Ripple Rejection
Highly Accurate
: 65dB @10kHz
: ±2%
Operating Temperature : - 40 ~ 85℃
Low ESR Capacitor Compatible
Ultra Small Packages
: SOT-25
SOT-89-5
USP-6B
: EU RoHS Compliant, Pb Free
Environmentally Friendly
■TYPICAL APPLICATION CIRCUITS
Rpull
220k
Rpull
220k
Rpull
220k
XC6403A ~ D Series
XC6403E Series
XC6403F Series
Rpull-u
p
Rpull-u
p
Rpull-u
p
XC6404A ~ D Series
XC6404E Series
XC6404F Series
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