XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
November 7, 2003 Ver. 4
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Low Power Consumption
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Dropout Voltage
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Output Voltage Range
Output Current
High Ripple Rejection Rate
Low Output Noise
Low ESR capacitor compatible
: 25
µA
(TYP)
: 30mV @ 30mA
: 100mV @ 100mA
: 0.8 V to 5.0 V
: More than 150 mA (300mA limit)
: 70 dB @ 1kHz
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APPLICATIONS
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Mobile phones (PDC, GSM, CDMA, IMT2000 etc.)
Cordless phones and radio communication equipment
Portable games
Cameras, Video recorders
Portable AV equipment
PDAs
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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 ‘chip-
scale’ package.
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FEATURES
Maximum Output Current
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Highly Accurate
: 150mA or more (300mA limit)
: 100mV (IOUT=100mA)
: 1.5V ~ 6.0V
: 0.8V ~ 5.0V (50mV Step)
: ±2% (VOUT>1.5V)
: ±30mV (VOUT≤1.5V)
Low Power Consumption
Standby Current
High Ripple Rejection
Operating Temperature Range
Low ESR Capacitor Compatible
Ultra Small Packages
: 25 mA (TYP.)
: Less than 0.1µA (TYP.)
: 70dB (1kHz)
: -40
O
C ~ +85
O
C
: Ceramic capacitor
: SOT-26W
USP-6B
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TYPICAL APPLICATION CIRCUITS
EN1
V
OUT1
6
1
2
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TYPICAL PERFORMANCE CHARACTERISTICS
#
Cross Talk
C
L1
1uF
XC6401 (VR1:3.0V, VR2:2.85V)
VIN=4.0V, CIN= CL=1uF (ceramics)
3.1
VR1 Output Voltage (3.0V)
5
V
IN
V
SS
C
IN
1uF
EN2
V
OUT2
4
3
C
L2
1uF
500
400
300
VR2 Output Voltage (2.85V)
100mA
3.0
2.9
2.8
2.7
10mA
200
100
0
1
2
C
IN
1uF
3
EN2 V
OUT2
V
IN
V
OUT1
EN1 V
SS
6
5
4
C
L1
1uF
C
L2
1uF
VR1 Output Current
2.6
Time (40usec/div)
Semiconductor Ltd.
Data Sheet
1
Output Current 1 IOUT (mA)
Output Voltage VOUT (V)
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
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PIN CONFIGURATION
VOUT1
6
VSS
5
VOUT2
4
EN2
VIN
EN1
1
EN1
2
VIN
SOT-26W
(TOP VIEW)
3
EN2
USP-6B
(TOP VIEW)
1
2
3
6
5
4
VOUT2
VOUT1
VSS
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PIN ASSIGNMENT
PIN NUMBER
SOT-26W
1
2
3
4
5
6
USP-6B
3
2
1
6
4
5
EN1
VIN
EN2
VOUT2
VSS
VOUT1
ON/OFF Control 1
Power Input
ON/OFF Control 2
Output 2
Ground
Output 1
PIN NAME
FUNCTION
*
A Pin number 1 is under the marking of the leftmost of 4 digits.
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PRODUCT CLASSIFICATION
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SELECTION GUIDE
The following options for the Regulator 1, 2, the EN pin logic, internal pull-up / down are available.
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ORDERING INFORMATION
DESIGNATOR
SYMBOL
XC6401123456
DESCRIPTION
DESIGNATOR
SYMBOL
DESCRIPTION
Internally set sequential number relating
output voltage of each regulators
Regulator 1, EN type
E
Active 'High'
(Pull-down resistor built in)
1
F
Active 'High'
(No pull-down, resistor built in)
34
01 ~
Regulator 1 Output Voltage Range :
0.8 ~ 5.0 V
Regulator 2 Output Voltage Range :
0.8 ~ 5.0 V
Both 1 and 2 can be set 50 mV steps
Packaging Types
G
Active 'Low'
(Pull-down resistor built in)
H
Active 'Low'
(No pull-down, resistor built in)
Regulator 2, EN type
E
Active 'High'
(Pull-down resistor built in)
5
D
USP-6B
M
SOT-26W
Device Orientation
2
F
Active 'High'
(No pull-down, resistor built in)
G
Active 'Low'
(Pull-down resistor built in)
6
R
Embossed Tape: Standard Feed
H
Active 'Low'
(No pull-down, resistor built in)
L
Embossed Tape: Reverse Feed
Semiconductor Ltd.
Data Sheet
2
XC6401 Series
Dual LDO Regulators, Low ESR Cap. Compatible
Preliminary
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ABSOLUTE MAXIMUM RATINGS
Ta = 25
O
C
PARAMETER
Input Voltage
Output Current
Output Voltage
EN Pin Voltage
Power Dissipation
SOT-26W
USP-6B
Operating Ambient Temperature
Storage Temperature
Topr
Tstg
SYMBOL
VIN
IOUT1 + IOUT2
VOUT
VEN
Pd
RATINGS
6.5
700
VSS -0.3 ~ VIN +0.3
VSS -0.3 ~ VIN +0.3
250
100
-40 ~ +85
-55 ~ +125
O
UNITS
V
mA
V
V
mW
C
C
O
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ELECTRICAL CHARACTERISTICS
Regulator 1, Regulator 2
PARAMETER
SYMBOL
XC6401FFxx
Ta=25
O
C
CONDITIONS
VIN=VOUT (T) + 1.0V
IOUT=30mA
VIN=VOUT (T) + 1.0V
1mA≤IOUT≤100mA
IOUT=30mA
IOUT=100mA
VIN=VEN=VOUT (T) + 1.0V,
IOUT=0mA
VIN=VOUT (T) + 1.0V,
VEN=VSS
VOUT(T)+1.0V≤VIN≤6.0V
IOUT=30mA
1.5
IOUT=30mA
-40
O
C≤Topr≤85
O
C
IOUT=30mA, f=1kHz
VIN=VOUT (T) + 1.0V, VEN=VIN
VIN=VOUT (T) + 1.0V, VEN=VIN
MIN
×
0.98
150
TYP
MAX
×
1.02
UNITS
CIRCUIT
Output Voltage (Note 7)
Maximum Output Current
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Line Regulation
Input Voltage
Output Voltage
Temperature Characteristics
Ripple Rejection Rate
Current Limiter
Short-circuit Current
EN "High" Voltage
EN "Low" Voltage
EN "High" Current
EN "Low" Current
NOTE
(NOTE 1)
(NOTE 2)
(NOTE 3)
(NOTE 4)
(NOTE 5)
(NOTE 6)
(NOTE 7)
VOUT (E)
IOUTMAX
∆VOUT
Vdif1
Vdif2
ISS
ISTB
∆VOUT
/
∆VIN ⋅
VOUT
VIN
∆VOUT
/
∆Topr ⋅
VOUT
PSRR
Ilim
Ishort
VENH
VENL
IENH
IENL
VOUT(T)
V
mA
1
1
1
1
2
3
1
15
E-1
E-2
25
0.01
0.01
60
mV
mV
mV
45
0.10
0.20
6.0
µA
µA
%/V
V
ppm/
O
C
dB
mA
mA
±100
70
300
30
1.60
VIN
0.25
1
5
1
1
4
4
4
4
V
V
µA
µA
VIN=VEN=VOUT (T) + 1.0V
VIN=VEN=VOUT (T) + 1.0V, VEN=VSS
-0.10
-0.10
0.10
0.10
VOUT(T)=Specified Output Voltage
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).
Vdif={VIN1
(NOTE5)
-VOUT1
(NOTE4)
}
VOUT1=A voltage equal to 98% of the Output Voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
VIN1=The Input Voltage when VOUT1 appears as Input Voltage is gradually decreased.
Unless otherwise stated, VIN=VOUT(T)+1.0V
If VOUT (T)
≤
1.45V, MIN VOUT (T) - 30mV
MAX VOUT (T) + 30mV
Semiconductor Ltd.
Data Sheet
3
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