XC6401 Series
ETR0309_005
Dual LDO Regulators, Low ESR Cap. Compatible
■GENERAL DESCRIPTION
The XC6401 series are highly accurate, Dual, low noise, CMOS LDO voltage regulators. Performance features of the series
includes low output noise, high ripple rejection ratio, low dropout and very fast turn-on times.
The XC6401 includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase
compensators internally. The XC6401’s current limiters' foldback circuit also operates as a short protect for the output current
limiter. The output voltage for each regulator is set independently by laser trimming. Voltages are selectable in 50mV steps
within a range of 0.8V to 5.0V. The XC6401 series is also fully compatible with low ESR ceramic capacitors, reducing cost
and improving output stability.
This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response
performance and high PSRR achieved across a broad range of frequencies. The EN function allows the output of each
regulator to be turned off independently, resulting in greatly reduced power consumption. The XC6401 series is available in
the SOT-26W or USP-6B, USP-6C ‘chip-scale’ package.
■APPLICATIONS
■FEATURES
●Mobile Phones
●Cordless phones and
radio communication equipment
●Portable games
●Cameras, Video recorders
●Portable Audio Equipment
●PDAs
Maximum Output Current
: More than 150mA (300mA limit)
Dropout Voltage
: 100mV @100mA
Operating Voltage Range
: 1.5V ~ 6.0V
Output Voltage Range
: 0.8V~5.0V (50mV increments)
Highly Accurate
: ±2% (VOUT>1.5V)
: ±30mV (VOUT≦1.5V)
Low Power Consumption
: 25μA (TYP.)
Standby Current
: Less than 0.1μA (TYP.)
High Ripple Rejection
: 70dB @1kHz
Operating Temperature Range : -40℃ ~ +85℃
Low ESR Capacitor Compatible : Ceramic capacitor
Low Output Noise
Ultra Small Packages
: SOT-26W,USP-6B,USP-6C
■TYPICAL APPLICATION CIRCUITS ■TYPICAL PERFORMANCE
CHARACTERISTICS
●SOT-26W
VOUT1
2
VIN
VSS
5
3
EN2
VOUT2
4
6
1
●Interactive Load Transient Response
EN1
CL1
1uF
CIN
1uF
CL2
1uF
●USP-6
CIN
1uF
1
EN2 VOUT2
6
2
VIN VOUT1
5
3
EN1 VSS
4
CL1
1uF
CL2
1uF
1/24
XC6401 Series
■PIN CONFIGURATION
VOUT1
VSS
6
6
1
EN1
VOUT2
5
4
3
2
VIN
EN2
SOT-26W
(TOP VIEW)
USP-6B / 6C
(BOTTOM VIEW)
*The dissipation pad for the USP-6B/C packages
should be solder-plated in recommended mount
pattern and metal masking so as to enhance
mounting strength and heat release.
If the pad needs to be connected to other pins, it
should be connected to the VSS pin.
■PIN ASSIGNMENT
PIN NUMBER
SOT-26W
USP-6B/C
1
3
2
2
3
1
4
6
5
4
6
5
PIN NAME
FUNCTION
EN1
VIN
EN2
VOUT2
VSS
VOUT1
ON/OFF Control 1
Power Input
ON/OFF Control 2
Output 2
Ground
Output 1
■PRODUCT CLASSIFICATION
●Selection Guide
The following options for the Regulator 1, 2, the EN pin logic, internal pull-up / down are available.
●Ordering Information
XC6401①②③④⑤⑥
DESIGNATOR
DESCRIPTION
①
Regulator1,
EN type
②
Regulator2,
EN type
③④
Output Voltage
⑤
Packaging Types
SYMBOL
E
F
G
H
E
F
G
H
01~
M
⑥
2/24
Device Orientation
DESCRIPTION
: High Active with pull-down resistor
: High Active with no pull-down resistor
: Low Active with pull-up resistor
: Low Active with no pull-up resistor
: High Active with pull-down resistor
: High Active with no pull-down resistor
: Low Active with pull-up resistor
: Low Active with no pull-up resistor
: Internally set sequential number relating output voltage of
each regulators
Regulator 1 Output Voltage Range: 0.8 ~ 5.0 V (50mV increments)
Regulator 2 Output Voltage Range: 0.8 ~ 5.0 V (50mV increments)
: SOT-26W
D
: USP-6B
E
: USP-6C
R
L
: Embossed tape, standard feed
: Embossed tape, reverse feed
XC6401
Series
■ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
Output Current
Output Voltage
EN Pin Voltage
SOT-26W
Power Dissipation
USP-6B
USP-6C
Operating Temperature Range
Storage Temperature Range
Ta = 25℃
SYMBOL
RATINGS
UNITS
VIN
IOUT1 + IOUT2
VOUT
VEN
6.5
700
VSS -0.3 ~ VIN +0.3
VSS -0.3 ~ 6.5
250
100
100
-40 ~ +85
-55 ~ +125
V
mA
V
V
Pd
Topr
Tstg
mW
℃
℃
* Sum of IOUT1 and IOUT2.
** Pd=(VIN-VOUT1)xIOUT1+(VIN-VOUT2)xIOUT2
■ELECTRICAL CHARACTERISTICS
XC6401FFxx
Regulator 1, Regulator 2
Ta=25℃
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
CIRCUIT
Output Voltage (*3)
VOUT (E)
VIN=VOUT (T) + 1.0V IOUT=30mA
0.98
VOUT(T)
1.02
V
1
Maximum Output Current
IOUTMAX
VIN=VOUT (T) + 1.0V
150
-
-
mA
1
Load Regulation
△VOUT
1mA≦IOUT≦100mA
-
15
60
mV
1
Vdif1
IOUT=30mA
E-1
mV
Vdif2
IOUT=100mA
VIN=VEN=VOUT (T) + 1.0V,
IOUT=0mA
E-2
mV
Dropout Voltage
Supply Current
ISS
Standby Current
ISTB
VIN=VOUT (T) + 1.0V, VEN=VSS
△VOUT
VOUT(T)+1.0V≦VIN≦6.0V
Line Regulation (*7)
△VIN
・
VOUT
Input Voltage
VIN
Output Voltage
△VOUT
Temperature Characteristics △Topr ・ VOUT
VEN=VIN, IOUT=30mA
IOUT=30mA
1
-
25
45
μA
2
-
0.01
0.10
μA
3
-
0.01
0.20
%/V
1
1.5
-
6.0
V
-
-
±100
-
ppm/℃
1
-
70
-
dB
5
-
300
-
mA
1
-
30
-
mA
1
Ripple Rejection Rate(*8)
PSRR
Current Limiter
Ilim
-40℃≦Topr≦85℃
VIN=[VOUT(T)+1.0]VDC+0.5Vp-pAC
IOUT=30mA, f=1kHz
VIN=VOUT (T) + 1.0V, VEN=VIN
Short-Circuit Current
Ishort
VIN=VOUT (T) + 1.0V, VEN=VIN
EN "High" Voltage
VENH
1.30
-
6.0
V
4
EN "Low" Voltage
VENL
-
-
0.25
V
4
EN "High" Current
IENH
VIN=VEN=VOUT (T) + 1.0V
-0.10
-
0.10
μA
4
EN "Low" Current
IENL
VIN= VOUT (T) + 1.0V, VEN=VSS
-0.10
-
0.10
μA
4
NOTE
*1: VOUT(T)=Specified 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: If VOUT (T)≦1.45V, MIN VOUT (T) - 30mV, MAX VOUT (T) + 30mV
(*6)
(*5)
*4: Vdif={VIN1 -VOUT1 }
*5: VOUT1=A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
*6: VIN1=the input voltage when VOUT1 appears as input voltage is gradually decreased.
*7: When VOUT(T)>4.5V, 5.5V
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