XC6601 Series
ETR03035-008b
Low Voltage Input LDO Voltage Regulator with Soft-Start Function
■GENERAL DESCRIPTION
The XC6601 series is a low voltage input CMOS LDO regulator which provides highly accurate (±20mV) outputs and can
supply current efficiently due to its ultra low on-resistance even at low output voltages. The series is ideally suited to the
applications which require very low dropout voltage operation and consists of a voltage reference, an error amplifier, a driver
transistor, a current limiter, a fold back circuit, a thermal shutdown (TSD) circuit, an under voltage lock out (UVLO) circuit,
soft-start circuit and a phase compensation circuit.
Output voltage is selectable in 0.05V increments within a range of 0.7V to 1.8V using laser trimming technology and ceramic
capacitors can be used for the output stabilization capacitor (CL).
The over current protection circuit (the current limiter and the fold back circuit) as well as the thermal shutdown circuit (the
TSD circuit) are built-in. These two protection circuits will operate when either the output current reaches the current limit level
or the junction temperature reaches the temperature limit level.
With the built-in UVLO function, the regulator output is forced OFF when the voltage level at the VBIAS pin or the VIN pin falls
below the UVLO voltage level. With the soft-start function, the inrush current from VIN to VOUT for charging CL at start-up can
be reduced and makes the VIN stable.
The CE function enables the output to be turned off and the series to be put in stand-by mode resulting in greatly reduced
power consumption. At the time of entering the stand-by mode, the series enables the electric charge at the output capacitor
(CL) to be discharged via the internal auto-discharge switch which is located between the VOUT pin and the VSS pin. As a result
the VOUT pin quickly returns to the VSS level.
■FEATURES
■APPLICATIONS
UVLO
TSD (Detect/Release)
Soft-Start Time
Operating Temperature Range
Function
Low ESR Capacitor
Packages
: 400mA (Limit:550mA TYP.)
: 38mV@IOUT=100mA (TYP.)
(at VBIAS - VOUT=2.4V)
: 2.5V ~ 6.0V (VBIAS - VOUT≧1.2V)
: 1.0V ~ 3.0V(VIN≦VBIAS)
: 0.7V ~ 1.8V (0.05V increments)
:±20mV
: IBIAS=25μA , IIN=1.0μA (TYP.)
IBIAS=0.01μA , IIN=0.01μA (TYP.)
: VBIAS=2.0V, VIN=0.4V (TYP.)
: 150℃/125℃ (TYP.)
: 240μs @ VOUT=1.2V (TYP.)
: -40℃ ~ 85℃
: CL High Speed Auto-Discharge
: Ceramic Capacitor Compatible
: USP-6C, SOT-25, SOT-89-5
Environmentally Friendly
: EU RoHS Compliant, Pb Free
Maximum Output Current
Dropout Voltage
●Smart phones / Mobile phones
●Portable game consoles
Bias Voltage Range
Input Voltage Range
Output Voltage Range
Output Voltage Accuracy
Power Consumption
●Digital still cameras / Camcorders
●Digital audio equipment
●Mobile devices / terminals
■ TYPICAL APPLICATION CIRCUIT ■ TYPICAL PEFORMANCE
CHARACTERISTICS
●VBIAS =3.6V , VIN =1.8V , VOUT =1.5V
●Dropout Voltage vs. Output Current
XC 6 6 0 1 B 1 2 1 M R
Ta=25 [℃]
1.8V/150mA
300
I/O
VBIAS=3.0V
VBIAS=3.3V
VBIAS=3.6V
VBIAS=4.2V
VBIAS=5.0V
VBIAS
System LSI
XC6601
XC9235
XC9236
XC9237
Li-Ion
3.6V
HIGH EFFICIENCY
Step-Down
1.0μF
DC/DC Converter
1.8V
1.0μF
VIN
VOUT
1.5V/300mA
4.7μF
Input
CE
VSS
core
Dropout Voltage: Vdif(mV)
250
200
150
100
50
0
0
100
200
300
400
Output Current: IOUT(mA)
1/30
XC6601 Series
■PIN CONFIGURATION
●USP-6C
●SOT-25
CE 6
1 VBIAS
NC 5
2 VSS
VOUT 4
3 VIN
USP-6C
(BOTTOM VIEW)
●SOT-89-5
VOUT
CE
5
4
1
2
3
VIN
VBIAS
VSS
VOUT
SOT-25
(TOP VIEW)
*The heat dissipation pad of the USP-6C
package is recommended to solder as the
recommended mount pattern and metal
mask pattern for mounting strength. This pad
should be electrically opened or connected
to the VBIAS (No.1) pin.
VIN
5
2
4
1
2
3
CE
VBIAS
VSS
SOT-89-5
(TOP VIEW)
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTION
VBIAS
Power Supply Input
4
VIN
Driver Transistor Input
5
VOUT
Output
3
3
VSS
Ground
4
1
CE
ON/OFF Control
USP-6C
SOT-25
SOT-89-5
1
2
2
3
1
4
5
2
6
■PRODUCT CLASSIFICATION
●Ordering Information
XC6601①②③④⑤⑥-⑦ (*1) : CE High Active, Soft-Start Function Built-in, CL Auto Discharge Function
MARK
①
Type of Regulators
②③
Output Voltage
④
Output Voltage
Type
⑤⑥-⑦
(*1)
(*2)
2/30
DESCRIPTION
Packages
Taping Type (*2)
SYMBOL
A
B
07 ~ 18
1
B
MR-G
ER-G
PR-G
DESCRIPTION
Pull-Down Resistor Built-in
No Pull-Down Resistor Built-in
e.g.) VOUT(T)=1.2V⇒②=1,③=2
0.1V increments
e.g.) 1.2V⇒②=1,③=2,④=1
0.05V increments
e.g.) 1.25V⇒②=1,③=2,④=B
SOT-25 (3,000pcs/Reel)
USP-6C (3,000pcs/Reel)
SOT-89-5 (1,000pcs/Reel)
The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
The device orientation is fixed in its embossed tape pocket.
For reverse orientation, please contact your local Torex sales office or representative.
(Standard orientation: ⑤R-⑦, Reverse orientation: ⑤L-⑦)
XC6601
Series
■BLOCK DIAGRAMS
(1) XC6601A Series
(1)XC6601A
Series
VBIAS
VIN
Voltage Reference
With
Soft Start
+
Error
Amp
-
VOUT
Under Voltage
Lock Out
Thermal
Current
Protection
Limit
R1
Rdischg
CE/
CE
each
circuit
ON/OFF
Control
CE/
CE
R pull-down
R2
VSS
(2) XC6601B Series
(2)XC6601B
Series
VBIAS
VIN
Voltage Reference
With
Soft Start
+
Error
Amp
-
VOUT
Under Voltage
Lock Out
Thermal
Current
Protection
Limit
R1
Rdischg
CE/
CE
each
circuit
ON/OFF
Control
CE/
CE
R2
VSS
*Diodes inside the circuit are an ESD protection diode and a parasitic diode.
3/30
XC6601 Series
■MAXIMUM ABSOLUTE RATINGS
Ta=25 ℃
PARAMETER
SYMBOL
RATINGS
UNITS
Bias Voltage
Input Voltage
Output Current
VBIAS
VIN
IOUT
V
V
mA
Output Voltage
VOUT
CE Input Voltage
VCE
VSS - 0.3 ~ 7.0
VSS - 0.3 ~ 7.0
700 (*1)
VSS - 0.3 ~ VBIAS + 0.3
VSS - 0.3 ~ VIN + 0.3
VSS - 0.3 ~ 7.0
100 (IC only)
1000 (40mm x 40mm Standard board) (*2)
1250 (JESD51-7 Board) (*2)
250 (IC only)
600 (40mm x 40mm Standard board) (*2)
760 (JESD51-7 Board) (*2)
500 (IC only)
1300 (40mm x 40mm Standard board) (*2)
1750 (JESD51-7 Board) (*2)
-40 ~ 85
-55 ~ 125
USP-6C
Power Dissipation
SOT-25
SOT-89-5
Pd
Operating Temperature Range
Topr
Storage Temperature Range
Tstg
(*1) IOUT=Less than Pd / (VIN-VOUT)
(*2) Please refer to PACKAGING INFORMATION for the mounting condition.
4/30
V
V
mW
℃
℃
XC6601
Series
■ELECTRICAL CHARACTERISTICS
Ta=25 ℃
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
Bias Voltage (*1)
VBIAS
VCE =VBIAS,VIN =VOUT(T)+0.3V
2.5
-
6.0
V
①
VIN
VBIAS=VCE=3.6V
1.0
-
3.0
V
①
VOUT(E) (*3)
VBIAS=VCE=3.6V, VIN =VOUT(T)+0.3V,
IOUT=100mA
-0.02
V
①
Input Voltage
(*2)
Output Voltage
Maximum Output
Current 1
Maximum Output
Current 2
Maximum Output
Current 3
VCE =VBIAS ,VBIAS -VOUT(T)≧1.2V
VIN =VOUT(T)+0.5V
VCE =VBIAS ,VBIAS -VOUT(T)≧1.3V
IOUTMAX 2
VIN =VOUT(T)+0.5V
VCE =VBIAS ,VBIAS -VOUT(T)≧1.5V
IOUTMAX 3
VIN =VOUT(T)+0.5V
VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V,
Load Regulation
△VOUT
1mA≦IOUT≦300mA
Dropout Voltage 1
Vdif1(*7)
VBIAS=VCE, IOUT=100mA
Dropout Voltage 2
Vdif2 (*7)
VCE =VBIAS , IOUT=200mA
Dropout Voltage 3
Vdif3 (*7)
VCE =VBIAS , IOUT=300mA
Dropout Voltage 4
Vdif4 (*7)
VCE =VBIAS , IOUT=400mA
VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V
Supply Current 1
IBIAS
VOUT=OPEN
VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V
Supply Current 2
IIN
VOUT=OPEN
VOUT(T)≧1.0V
VBIAS=VCE =3.6V, VIN=VOUT(T)
VOUT= VOUT(T) - 0.05V
Bias Current (*10)
IBIASMAX
VOUT(T)<1.0V
VBIAS=VCE =3.6V, VIN=1.0V
VOUT= VOUT(T) - 0.05V
Stand-by Current 1
IBIAS_STB
VBIAS=6.0V, VIN=3.0V, VCE=VSS
Stand-by Current 2
IIN_STB
VBIAS=6.0V, VIN=3.0V, VCE=VSS
VOUT(T)≧1.3V
VOUT(T)+1.2V≦VBIAS≦6.0V,
△VOUT/
VIN=VOUT(T)+0.3V, VCE =VBIAS , IOUT=1mA
Bias Regulation
(△VBIAS・
VOUT(T)<1.3V
VOUT)
2.5V≦VBIAS≦6.0V,
VIN=VOUT(T)+0.3V, VCE =VBIAS , IOUT=1mA
VOUT(T)≧0.90V,
VOUT(T)+0.1V≦VIN≦3.0V,
VBIAS=VCE=3.6V, IOUT=1mA
△VOUT/
Input Regulation
(△VIN・VOUT)
V OUT(T)<0.90V,
1.0V≦VIN≦3.0V
VBIAS=VCE=3.6V, IOUT=1mA
VCE =VBIAS, VIN =VOUT(T)+0.3V,
Bias Voltage UVLO
VBIAS_UVLO
IOUT=1mA
Input Voltage UVLO
VIN_UVLO
VBIAS=VCE=3.6V, IOUT=1mA
VBIAS= VCE =3.6VDC+0.2Vp-pAC,
VBIAS Ripple Rejection VBIAS_PSRR
VIN=VOUT(T)+0.3V, IOUT=30mA,f=1kHz
VIN=VOUT(T)+0.3VDC+0.2Vp-pAC,
VIN Ripple Rejection
VIN_PSRR
VBIAS=3.6V, IOUT=30mA, f=1kHz
IOUTMAX 1
VOUT(T) (*4) +0.02
E-0 (*5)
UNITS CIRCUIT
200
-
-
mA
①
300
-
-
mA
①
400
-
-
mA
①
-
8
17
mV
①
mV
mV
mV
mV
①
①
①
①
E-1 (*6)
E-2 (*6)
E-3 (*6)
E-4 (*6)
8
25
45
μA
①
0.1
1.0
3.0
μA
①
-
1.0
2.5
mA
①
-
0.01
0.01
0.10
0.35
μA
μA
①
①
-
0.01
0.3
%/V
①
-
0.01
0.1
%/V
①
1.37
2.0
2.5
V
①
0.07
0.4
0.6
V
①
-
40
-
dB
②
-
60
-
dB
②
5/30
XC6601 Series
■ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER
SYNBOL
Output Voltage
Temperature
Characteristics
△VOUT/
△Topr・VOUT
Limit Current
ILIM
Short Current
ISHORT
Thermal Shutdown
Detect Temperature
Thermal Shutdown
Release Temperature
Hysteresis Width
CL Auto-Discharge
Resistance
CE "H" Level Voltage
Ta=25 ℃
CONDITIONS
VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V ,
IOUT=30mA,
- 40℃≦ Topr ≦85℃
VOUT=VOUT(E)×0.95,
VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V
VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V,
VOUT=0V
MIN.
TYP.
MAX.
UNITS CIRCUIT
-
±100
-
ppm/℃
①
400
550
-
mA
①
-
80
-
mA
①
TTSD
Junction Temperature
-
150
-
℃
①
TTSR
Junction Temperature
-
125
-
℃
①
-
25
-
℃
①
TTSD-TTSR
290
430
610
Ω
①
VCEH
VBIAS=3.6V, VIN= VOUT(T)+0.3V,
VCE= VSS, VOUT=VOUT(T)
VBIAS=3.6V, VIN= VOUT(T)+0.3V
0.75
-
6.0
V
①
-
-
0.16
V
①
2.4
-
8.0
μA
①
-0.1
-
0.1
-0.1
-
0.1
μA
①
100
-
410
μs
③
Rdischg
CE "L" Level Voltage
VCEL
VBIAS=3.6V, VIN= VOUT(T)+0.3V
CE "H" Level Current
(A Series)
CE "H" Level Current
(B Series)
ICEH
VBIAS=VCE=6.0V,
VIN=VOUT(T)+0.3V
CE "L" Level Current
ICEL
Soft-Start Time (*11)
tSS
VBIAS=6.0V, VCE=VSS
VIN=VOUT(T)+0.3V
VBIAS=3.6V, VIN=VOUT(T)+0.3V, IOUT=1mA
VCE=0V→3.6V
NOTE:
* 1: Please use Bias voltage VBIAS within the range VBIAS –VOUT(E) (*3)≧1.2V
* 2: Please use Input voltage VIN within the range VIN≦VBIAS
* 3: VOUT(E) = Effective output voltage (Refer to the voltage chart E-0 and E-1)
* 4: VOUT (T) = Specified output voltage
* 5: E-0 = Please refer to the table named OUTPUT VOLTAGE CHART
* 6: E-1 = Please refer to the table named DROPOUT VOLTAGE CHART
* 7: Vdif = {VIN1(*8)-VOUT1(*9)}.
* 8: VIN1 = The input voltage when VOUT1 appears as input voltage is gradually decreased.
* 9: VOUT1 = A voltage equal to 98% of the output voltage while maintaining an amply stabilized output voltage when VIN=VBIAS at VBIAS