XC6214 Series
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
November 2, 2004 V3
APPLICATIONS
CMOS Low Power Consumption
Maximum Output Current
8µA (TYP.)
more than 500mA
DVD, CD-ROM, HDD drive equipment
Portable AV equipment (cameras, VCRs, etc.)
Current Limit Circuit Built-In
Wireless Communication equipment (Mobile & Cordless phone, etc.)
Thermal Shutdown Circuit Built-In
Desktop computers, note book computer, PDAs
Ceramic Capacitor Compatible
Network equipment (wireless LAN etc.)
Reference voltage
Battery powered equipment
GENERAL DESCRIPTION
FEATURES
The XC6214 series are highly precise, low noise, high current, positive
Maximum Output Current
: more than 500mA (800mA limit)
voltage low dropout regulators.
Dropout Voltage
: 500mV @ IOUT = 500mA (VOUT=3V)
Operating Voltage Range
: 1.8V ~ 6.0V
Output Voltage
: 1.5V, 2.5V, 3.3V (standard)
process.
They are fabricated using Torex’s CMOS
The series features a voltage reference, an error amplifier, a
current limiter, a thermal protection circuit, and a phase compensation
circuit plus a driver transistor.
Other voltages between 1.5V to 5.0V
The output voltage is selectable in 100mV increments within the range of
1.5V to 5.0V.
(semi-custom)
(Output voltage 1.5V, 2.5V, and 3.3V are standard products.
High Accuracy
: Setting voltage accuracy + 2%
Other than these voltages are available as semi-custom products.)
Low Power Consumption
: 8µA (TYP.)
The series is also compatible with low ESR ceramic capacitors, which give
Ripple Rejection Rate
: 40dB @ 1kHz
Operating Temperature Range
: - 40 OC ~ 85 OC
Packages
: SOT-26
added output stability.
This stability can be maintained even during load
fluctuations due to the excellent transient response of the series.
The over protection and thermal shutdown circuit inside the IC
SOT-89
The over current protection circuit and the thermal shutdown circuit are built
in.
The over current protection circuit will operate when the output current
reaches current limit level.
The thermal shutdown circuit will operate when
the junction temperature reaches temperature limit level.
TYPICAL APPLICATION CIRCUIT
VIN
VIN
Data Sheet
CIN
1.0uF
VOUT
VSS
CL
1.0uF
RL
1
R000033
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
PIN CONFIGURATION
6
5
4
1
2
3
1
SOT-26 (TOP VIEW)
2
3
SOT-89 (TOP VIEW)
** The 2, 4 and 5 pins of the SOT-26 package are the common VSS pins in the package.
For a heat design, in connecting the heat dissipation pad to a circuit,
Please use the 2, 4, and 5 pins as the VSS pin on the PCB board.
PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTIONS
2
VIN
Power Input
2, 4, 5
1
VSS
Ground
3
-
NC
No Connection
6
3
VOUT
Output
SOT-26
SOT-89
1
PRODUCT CLASSIFICATION
Ordering Information
XC6214P 12345
DESIGNATOR
1
2
3
4
5
Data Sheet
DESCRIPTION
SYMBOL
Output Voltage
Integer
Output Voltage Accuracy
2
Package
Device Orientation
DESCRIPTION
ex.) 2.5V products D 1=2, 2=5
Within + 2%
ex.) 2.50V products D 1=2, 2=5, 3=2
M
SOT-26
P
SOT-89
R
Embossed tape: standard feed
L
Embossed tape: reverse feed
2
R000033
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
BLOCK DIAGRAM
VIN
VOUT
Current Limit
Thermal
Shutdown
+
Voltage
Reference
VSS
ABSOLUTE MAXIMUM RATINGS
Ta=25 OC
PARAMETER
SYMBOL
RATINGS
UNITS
Input Voltage
VIV
- 0.3 ~ + 6.5
V
Output Current
IOUT
800 *
mA
Output Voltage
VOUT
VSS – 0.3 ~ VIN + 0.3
V
SOT-26
Power Dissipation
Refer to page 8
Pd
SOT-89
mW
500
Operating Temperature Range
Topr
- 40 ~ + 85
O
C
Storage Temperature Range
Tstg
- 55 ~ + 125
O
C
* IOUT > Pd / (VIN – VOUT)
Data Sheet
3
R000033
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
ELECTRICAL CHARACTERISTICS
XC6214P152 [VOUT(T)=1.5V]
Ta= 25OC
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
CIRCUIT
Output Voltage
VOUT(E) (*2)
VIN=2.5V, IOUT=50mA
1.470
1.500
1.530
V
1
Maximum Output Current
IOUTmax
VIN=2.5V, VOUT=VOUT(E) x 0.90
500
-
-
mA
1
Load Regulation
UVOUT
VIN=2.5V, 1mA<IOUT<200mA
-
20
50
mV
1
Dropout Voltage (*3)
Vdif
IOUT=500mA
-
800
1200
mV
1
-
8
15
µA
2
-
0.05
0.20
%/V
1
1.8
-
6.0
V
-
-
+ 100
-
ppm / OC
1
-
50
-
mA
1
Supply Current
Line Regulation
ISS
VIN=2.5V
UVOUT /
IOUT=50mA
UVIN VOUT
2.5V<VIN<6.0V
Input Voltage
VIN
Output Voltage
UVOUT /
IOUT=50mA
Temperature Characteristics
UTopr VOUT
- 40 OC < Topr < 85 OC
Short-Circuit Current
Ilim
VIN=2.5V, VOUT=0V
(*1) VOUT(T) : Setting output voltage
(*2) VOUT(E): Effective output voltage (i.e. the output voltage when “VOUT(T)+1.0V” is provided at the VIN pin while maintaining a certain IOUT value.)
(*3) Vdif={VIN1
(note5)
(note 4)
-VOUT1
}
(*4) VOUT1= A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
(*5) VIN1=The Input Voltage when VOUT1 appears as input voltage is gradually decreased.
Ta= 25OC
XC6214P182 [VOUT(T)=1.8V]
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
CIRCUIT
Output Voltage
VOUT(E) (*2)
VIN=2.8V, IOUT=50mA
1.764
1.800
1.836
V
1
Maximum Output Current
IOUTmax
VIN=2.8V, VOUT=VOUT(E) x 0.90
500
-
-
mA
1
Load Regulation
UVOUT
VIN=2.8V, 1mA<IOUT<200mA
-
20
50
mV
1
Dropout Voltage (*3)
Vdif
IOUT=500mA
-
700
1050
mV
1
-
8
15
µA
2
-
0.05
0.20
%/V
1
1.8
-
6.0
V
-
-
+ 100
-
ppm / OC
1
-
50
-
mA
1
Supply Current
Line Regulation
ISS
VIN=2.8V
UVOUT /
IOUT=50mA
UVIN VOUT
2.8V<VIN<6.0V
Input Voltage
VIN
Output Voltage
UVOUT /
IOUT=50mA
Temperature Characteristics
UTopr VOUT
- 40 C < Topr < 85 OC
Short-Circuit Current
Ilim
VIN=2.8V, VOUT=0V
O
(*1) VOUT(T): Setting output voltage
(*2) VOUT(E): Effective output voltage (i.e. the output voltage when “VOUT(T)+1.0V” is provided at the VIN pin while maintaining a certain IOUT value.)
(*3) Vdif={VIN1
(note5)
(note 4)
-VOUT1
}
(*4) VOUT1= A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
(*5) VIN1=The Input Voltage when VOUT1 appears as input voltage is gradually decreased
Data Sheet
4
R000033
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
ELECTRICAL CHARACTERISTICS
XC6214P252 [VOUT(T)=2.5V]
Ta= 25OC
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
CIRCUIT
Output Voltage
VOUT(E) (*2)
VIN=3.5V, IOUT=50mA
2.450
2.500
2.550
V
1
Maximum Output Current
IOUTmax
VIN=3.5V, VOUT=VOUT(E) x 0.93
500
-
-
mA
1
Load Regulation
UVOUT
VIN=3.5V, 1mA<IOUT<200mA
-
20
50
mV
1
Dropout Voltage (*3)
Vdif
IOUT=500mA
-
600
900
mV
1
-
8
15
µA
2
-
0.05
0.20
%/V
1
1.8
-
6.0
V
-
-
+ 100
-
ppm / OC
1
-
50
-
mA
1
Supply Current
Line Regulation
ISS
VIN=3.5V
UVOUT /
IOUT=50mA
UVIN VOUT
3.5V<VIN<6.0V
Input Voltage
VIN
Output Voltage
UVOUT /
IOUT=50mA
Temperature Characteristics
UTopr VOUT
- 40 OC < Topr < 85 OC
Short-Circuit Current
Ilim
VIN=3.5V, VOUT=0V
(*1) VOUT(T): Setting output voltage
(*2) VOUT(E): Effective output voltage (i.e. the output voltage when “VOUT(T)+1.0V” is provided at the VIN pin while maintaining a certain IOUT value.)
(*3) Vdif={VIN1
(note5)
(note 4)
-VOUT1
}
(*4) VOUT1= A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
(*5) VIN1=The Input Voltage when VOUT1 appears as input voltage is gradually decreased.
Ta= 25OC
XC6214P332 [VOUT(T)=3.3V]
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
CIRCUIT
Output Voltage
VOUT(E) (*2)
VIN=4.3V, IOUT=50mA
3.234
3.300
3.366
V
1
Maximum Output Current
IOUTmax
VIN=4.3V, VOUT=VOUT(E) x 0.96
500
-
-
mA
1
Load Regulation
UVOUT
VIN=4.3V, 1mA<IOUT<200mA
-
20
50
mV
1
Dropout Voltage (*3)
Vdif
IOUT=500mA
-
500
750
mV
1
-
8
15
µA
2
-
0.05
0.20
%/V
1
1.8
-
6.0
V
-
-
+ 100
-
ppm / OC
1
-
50
-
mA
1
Supply Current
Line Regulation
ISS
VIN=4.3V
UVOUT /
IOUT=50mA
UVIN VOUT
4.3V<VIN<6.0V
Input Voltage
VIN
Output Voltage
UVOUT /
IOUT=50mA
Temperature Characteristics
UTopr VOUT
- 40 C < Topr < 85 OC
Short-Circuit Current
Ilim
VIN=4.3V, VOUT=0V
O
(*1) VOUT(T): Setting output voltage
(*2) VOUT(E): Effective output voltage (i.e. the output voltage when “VOUT(T)+1.0V” is provided at the VIN pin while maintaining a certain IOUT value.)
(*3) Vdif={VIN1
(note5)
(note 4)
-VOUT1
}
(*4) VOUT1= A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
(*5) VIN1=The Input Voltage when VOUT1 appears as input voltage is gradually decreased
Data Sheet
5
R000033
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
TEST CIRCUITS
Circuit 1
VIN
V
VSS
CIN=1.0uF
(ceramic)
A
VOUT
CL=1.0uF
(ceramic)
V
RL
Circuit 2
A
CIN=1.0uF
(ceramic)
Data Sheet
VIN
VOUT
OPEN
VSS
6
R000033
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
OPERATIONAL EXPLANATION
<Output voltage regulator control>
The voltage, divided by resistors R1 & R2, which are connected to the VOUT pin is compared with the internal reference voltage by the error amplifier.
The P-Channel MOSFET, which is connected to the VOUT pin, is then driven by the subsequent output signal.
controlled & stabilized by negative feedback.
The output voltage at the VOUT pin is
The current limit circuit and over current protection operate in relation to the level of output current and heat.
VIN
VOUT
Current Limit
Thermal
Shutdown
+
Voltage
Reference
VSS
<Low ESR Capacitors>
With the XC6214 series regulator, a stable output voltage is achievable even if low ESR capacitors are used, as a phase compensation circuit is built-in to the
regulator.
In order to ensure the stability of the load transient response and line transient response, we suggest that an output capacitor (CL) be connected as
close as possible, between the output pin (VOUT) and the VSS pin. Please use an output capacitor (CL) with a capacitance more than 0.1µF.
We also
suggest an input capacitor (CIN) of 0.1µF: this should be connected between VIN and VSS in order to stabilize input power source.
<Current Limiter, Short-Circuit Protection>
The XC6214 series regulator offers a combination of current limit and circuit protection by means of a built-in fixed current limiter circuit and a foldback circuit.
When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops.
voltage, the foldback circuit operates, the output voltage drops further and output current decreases.
As a result of this drop in output
When the output pin is shorted, a current of about 50mA
flows.
<Thermal Shutdown>
When the junction temperature of the built-in driver transistor reaches the temperature limit level (TYP.: 150OC), the thermal shutdown circuit operates and the
driver transistor will be set to OFF.
The thermal shutdown function will be released (automatically recovered) when the junction temperature decreases to the
thermal shutdown release temperature level and the IC re-starts the operation.
NOTES ON USE
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be exceeded.
2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current.
Please strengthen VIN and VSS wiring in particular.
3. Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
Should rapid input fluctuation or load fluctuation occur, please increase the capacitor value such as CIN or CL to stabilize the operation.
Data Sheet
7
R000033
XC6214 Series
High Speed LDO Regulators,
Thermal Shutdown Function, Ceramic Capacitor Compatible
Preliminary
POWER DISSIPATION
The 2, 4 and 5 pins of the SOT-26 package are the common VSS pins at the heat dissipation pads.
For increasing power dissipation of the package, please use the 2, 4, and 5 pins as the VSS pin on the PCB board.
600
Power Dissipation (mW)
500
400
300
200
100
0
0
25
50
75
100
125
Ambient Temperature (OC)
SOT-26 PCB Specification
Material
: Glass epoxy G10
Size
: 25mm x 25mm
Board Thickness
: 1.0mm
Heat Dissipation Wire Size
: 23mm x 23mm
Through Holes (eleven)
:
O
0.5mm
Screw Cramp Hole
(BOTTOM VIEW)
(TOP VIEW)
Data Sheet
25
25
23
25
23
23
25
23
8
R000033
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