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PDF XC6230 Data sheet ( Hoja de datos )
| Número de pieza | XC6230 | |
| Descripción | Adjustable Voltage Output Multifunction 2A High Speed LDO Regulator | |
| Fabricantes | Torex Semiconductor | |
| Logotipo |  |
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XC6230 Series
ETR03084-003a
Adjustable Voltage Output Multifunction 2A High Speed LDO Regulator
■GENERAL DESCRIPTION
The XC6230 series are low on-resistance / low dropout voltage, highly precise, low noise, high PSRR, and large current High Speed LDO regulator IC.
Internal circuitry includes a reference voltage supply, error amplifier, driver transistor, over-current protection circuit, in-rush current prevention circuit,
reverse current protection circuit, thermal shutdown circuit, and phase compensation circuit.
A built-in 0.17Ω low ON-resistance Pch driver transistor which can output up to a maximum output current 2.0A are also enclosed in a small
surface-mount PKG, even in applications that input and output voltage difference is you use a very small state, it is possible to use in the space-saving.
A low ESR ceramic capacitor can be used for the output capacitor (CL).
Then, the output voltage is possible to set the output voltage value to 1.2V ~ 5.0V by connecting the external resistors to VOFB terminal.
The over current protection circuit will operate when the output current reaches its current limit. The thermal shutdown circuit will operate when the
junction temperature reaches its limit temperature. The current limit is possible to arbitrarily set in a range of external resistor in 0.3 ~ 2.5A to ILIM terminal.
The inrush current prevention circuit perform the function of suppressing the variation of the VIN line and It is possible to suppress the current (inrush
current), which is charged in the output capacitor (CL) during IC start rising (when the IC control in CE). In addition, the CE function enables the output to
be turned off and the IC becomes a stand-by mode resulting in greatly reduced power consumption. When in standby mode, the output capacitor (CL)
to be discharged at high speed it can be returned to the VSS level.
The IC has further built-in reverse current prevention circuit, to prevent backflow current when the voltage state of more than input terminal (VIN) to the
output terminal (VOUT).
■APPLICATIONS
●Industrial equipment
●Mobile modules
●Wireless modules
■FEATURES
Output current
: 2.0A
Current Limit setting range
: 0.3A ～2.5A
Dropout Voltage
: 0.17V @ IOUT =1.0A / VOUT_SET =3.3V
Input voltage range
: 1.7V～6.0V
Adjustable Output Voltage Accuracy : 1.2V ±1.0％
Output voltage setting range
: 1.2V～5.0V
Supply current
: 45μA
Addition function
: Reverse Current Protection(Option)
Inrush Current Protection
Output Voltage adjustable
CL High Speed Discharge
Current Limit adjustable
Protection function
: Thermal shutdown
(Detection Temp：150℃(TYP.),
Release Temp：125℃(TYP.)
Current limit、Short Protection
Output capacitor
: Ceramic capacitor (4.7μF)
Operating Ambient Temperature
: -40℃～+105℃
Packages
: USP-6C, SOP-8FD (Under Development)
Environment friendly features
: EU RoHS Directive compliant, Pb free
■TYPICAL APPLICATION CIRCUIT
V IN
INPUT
CE
VOUT
V IN
CIN =2.2uF
( ceramic)
VOFB
ILIM
VSS
R 21
R 22
R ILIM
■TYPICALPERFORMANCE CHARACTERISTICS
Output Voltage vs. Output Current (Output current externally adjusted.)
CL =4.7uF
(ceramic)
1. 6
1. 4
1. 2
1. 0
XC6230(VOUT_SET=1.2V)
VOUT_SET =1.2V, Ta=25℃,
VIN=2.2V, CIN=2.2μF(ceramic), CL=4.7μF(ceramic)
RLIM_SET=0Ω
RLIM_SET=13.5kΩ
RLIM_SET=36kΩ
RLIM_SET=100kΩ
RLIM_SET=200kΩ
0. 8
0. 6
0. 4
0. 2
0. 0
0
500 1000 1500 2000 2500 3000
Output Current : IOUT (mA)
1/26
1 page  
■ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
Output Voltage
Output Current
CE Input Voltage
VOFB Pin Voltage
ILIM Pin Voltage
ILIM Pin Current
SYMBOL
VIN
VOUT
IOUT
VCE
VOFB
VILIM
ILIM
RATINGS
-0.3～+7.0
-0.3～+7.0
3.0(*1)
-0.3～+7.0
-0.3～+6.0
-0.3～+6.0
±1.0
Power
Dissipation
USP-6C
SOP-8FD
(Under Development)
Pd
1000 (*2)
1500 (*2)
Operating Ambient Temperature
Topr
-40～+105
Storage Temperature
Tstg
-55～+125
All voltage ratings are relative to VSS.
(*1) Use with IOUT less than Pd/（VIN-VOUT）.
(*2) This power dissipation figure shown is PCB mounted and is for reference only. Please refer to page 23~24 for details.
XC6230
Series
Ta=25℃
UNITS
V
V
A
V
V
V
mA
mW
℃
℃
5/26
5 Page 
■OPERATIONAL EXPLANATION (Continued)
XC6230
Series
<Thermal Shutdown>
When the junction temperature of the built-in driver transistor reaches the temperature limit, the thermal shutdown circuit
operates and the driver transistor will be set to OFF. The IC resumes its operation when the thermal shutdown function is
released and the IC’s operation is automatically restored because the junction temperature drops to the level of the thermal
shutdown release voltage.
<CE Pin>
The IC's internal circuitry can be shutdown via the signal from the CE pin.
H type has a pull-down resistor at the CE pin inside IC, so that the CE pin input current flows.
<Inrush Current Protection>
The inrush current protection circuit is built in the IC.
When the IC starts to operate, the protection circuit limits the inrush current within 500mA (MAX.) from input pin (VIN) to output
pin (VOUT) to charge CL capacitor.
However the control of the internal IC cannot be supply more than 500mA (MAX.) for about 300μs.
<Reverse Current Protection>
The XC6230 series includes reverse current protection to prevent the damage battery or the like which is connected to the VIN
pin to prevent the destruction as a result of backflow from VOUT pin to the VIN pin and VSS pin when the power supply is
connected to the VOUT pin. When VIN is smaller than VOUT, the reverse current protection works and suppress the reverse
current to 0.1μA (MAX.). When VIN is smaller than VOUT, the VOUT pin sink current IREVS flowing from the VOUT pin to the VSS pin is
0.9μA (TYP.) as the IC operation current.
<CL Auto-Discharge Function>
The XC6230 contains a CL auto-discharge resistor and an N-channel transistor between the VOUT pin and the VSS pin. The
device quickly discharge the electric charge in the output capacitor (CL) when a low signal to the CE pin is input to turn off a
whole IC circuit. The CL auto-discharge resistance is set at 35Ω (VOUT=1.2V typ. @ VIN=6.0). Discharge time of the output
capacitor (CL) is determined by a CL auto-discharge resistor value (RDCHG) and an output capacitor value. Time constant τ is
defined as (τ=CL x RDCHG). Output voltage after starting discharge can be calculated by the following formula.
V=VOUT(E)×e-t/τ ……………(11)
V：Output voltage after starting discharge
VOUT(E)：Output voltage
t：Discharge time
τ：RDCHG×CL
CL：Capacitance connected VOUT pin
RDCHG：Output discharge resistor（CL Discharge Resistance）
It can be expanded on “t”,
it is possible to obtain the discharge time from the above equation.
t=τln(VOUT(E) / V) ……………(12)
11/26
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet XC6230.PDF ] | |
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