XC6212 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Output ON/OFF Control
! Low Power Consumption
! Dropout Voltage
! APPLICATIONS
: 25µA (TYP.)
"
"
"
"
"
"
"
: 60mV @ 30mA
: 200mV @ 100mA
!
!
!
!
Maximum Output Current
: up to 150mA
Highly Accurate
: ± 2% (± 30mV less than 1.5V)
Output Voltage Range
: 0.9V ~ 6.0V (50mV Step)
Low ESR capacitor compatible
! GENERAL DESCRIPTION
Mobile phones, Cordless phones
Wireless communication equipment
Portable games
Cameras, Video recorders
Portable AV equipment
Reference voltage
Battery powered equipment
! FEATURES
The XC6212 series are highly precise, low noise, positive voltage LDO
regulators manufactured using CMOS processes. The series achieves
high ripple rejection and low dropout and consists of a voltage reference,
an error amplifier, a current limiter and a phase compensation circuit
plus a driver transistor.
Output voltage is selectable in 50mV increments within a range of 0.9V ~
6.0V.
The series is also compatible with low ESR ceramic capacitors which
give added output stability. This stability can be maintained even during
load fluctuations due to the excellent transient response of the series.
The current limiter's foldback circuit also operates as a short protect for
the output current limiter and the output pin.
The CE function enables the output to be turned off, resulting in greatly
reduced power consumption.
! TYPICAL APPLICATION CIRCUIT
Maximum Output Current
: 150mA
Dropout Voltage
: 200mV (IOUT=100mA)
Maximum Operating Voltage
: 2.0V ~ 10V
Output Voltage Range
: 0.9V~6.0V (50mV Step)
Highly Accurate
: ±2% (VOUT>1.5V)
: ±30mV (VOUT≤1.5V)
Low Power Consumption
: 25mA (TYP.)
Standby Current
: Less than 0.1mA (TYP.)
High Ripple Rejection
: 70dB (10kHz)
Operating Temperature Range
: -40OC ~ +85OC
Low ESR Capacitor Compatible
: Ceramic capacitor
Ultra Small Packages
: SOT-25 (SOT-23-5)
! TYPICAL PERFORMANCE CHARACTERISTICS
1
VOUT NC
2
VSS
3
VIN
CE
XC6212 x 302
5
50
Supply Current ISS (µA)
CL
1µF
October 27, 2003 V3
4
CI N
1µF
40
30
20
Topr = 85OC
= 25OC
= - 40OC
10
0
0
2
4
6
8
10
Input Voltage VIN (V)
Semiconductor Ltd.
1
XC6212 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Output ON/OFF Control
! PIN CONFIGURATION
! PIN ASSIGNMENT
NC
5
1
PIN NUMBER
CE
4
2
VOUT VSS
PIN NAME
FUNCTION
1
VOUT
Output
2
VSS
Ground
3
VIN
Power Input
4
CE
ON / OFF Control
5
NC
No Connection
SOT-25
3
VIN
SOT-25 (SOT-23-5)
(TOP VIEW)
! BLOCK DIAGRAM
CE
VIN
ON/OFF
Control
each circuit
Current
Limiter
VOUT
R2
R1
VSS
Voltage
Reference
! SELECTION GUIDE
The following options for the CE pin logic and internal pull-up/down are available:
Active 'High' + no pull-down resistor built-in (standard)
Active 'High' + 2.0MΩ pull-down resistor built-in <between CE-VSS> (semi-custom)
Active 'Low' + no pull-up resistor built-in (semi-custom)
Active 'Low' + 2.0MΩ pull-up resistor built-in <between VIN-CE> (semi-custom)
Note: *With the pull-up resistor or pull-down resistor built-in types, the supply current during operation will increase by VIN / 2.0MΩ (TYP.).
! ORDERING INFORMATION
XC6212123456
DESIGNATOR
SYMBOL
DESCRIPTION
A
Active 'High', Pull-down resistor built in
(Semi-custom)
B
Active 'High',
No pull-down resistor built in (Standard)
C
Active 'Low', Pull-up resistor built in
(Semi-custom)
D
Active 'Low', No pull-up resistor built in
(Semi-custom)
1
DESIGNATOR
SYMBOL
Output Voltage : 100mV Step
2
3
Integer
Accuracy : within ±2%
e.g. 2=2, 3=8, 4=2 ⇒ 2.80V
4
Output Voltage : 50mV Step
A
Accuracy : within ±2%
e.g. 2=2, 3=8, 4=A ⇒ 2.85V
Package Type :
5
M
6
R
Embossed Tape : Standard Feed
L
Embossed Tape : Reverse Feed
Output Voltage :
2
DESCRIPTION
SOT-25 (SOT-23-5)
Device Orientation :
e.g. 3.0V = 2 : 3, 3 : 0
Semiconductor Ltd.
2
XC6212 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Output ON/OFF Control
! PACKAGING INFORMATION
# SOT-25 (SOT-23-5)
! MARKING RULE
# SOT-25 (SOT-23-5)
1 Represents product series
SYMBOL
PRODUCT SERIES
9
XC6212xxxxMx
1234
SOT-25 (SOT-23-5)
(TOP VIEW)
2 Represents the type of voltage regulator
SYMBOL
VOUT 100mV STEPS
PRODUCT SERIES
VOUT 50mV STEPS
VOUT=0.1~3.0V
VOUT=3.1~6.0V
VOUT=0.15~3.05V
VOUT=3.15~6.05V
V
X
A
B
E
F
L
M
XC6212AxxxMx
Y
C
H
N
XC6212CxxxMx
Z
D
K
P
XC6212DxxxMx
XC6212BxxxMx
3 Represents output voltage
SYMBOL
OUTPUT VOLTAGE (V)
SYMBOL
OUTPUT VOLTAGE (V)
0
-
3.10
-
3.15
F
1.60
4.60
1.65
4.65
1
-
3.20
-
3.25
H
1.70
4.70
1.75
4.75
2
-
3.30
-
3.35
K
1.80
4.80
1.85
4.85
3
-
3.40
-
3.45
L
1.90
4.90
1.95
4.95
4
-
3.50
-
3.55
M
2.00
5.00
2.05
5.05
5
-
3.60
-
3.65
N
2.10
5.10
2.15
5.15
6
-
3.70
-
3.75
P
2.20
5.20
2.25
5.25
7
-
3.80
-
3.85
R
2.30
5.30
2.35
5.35
8
0.90
3.90
0.95
3.95
S
2.40
5.40
2.45
5.45
9
1.00
4.00
1.05
4.05
T
2.50
5.50
2.55
5.55
A
1.10
4.10
1.15
4.15
U
2.60
5.60
2.65
5.65
B
1.20
4.20
1.25
4.25
V
2.70
5.70
2.75
5.75
C
1.30
4.30
1.35
4.35
X
2.80
5.80
2.85
5.85
D
1.40
4.40
1.45
4.45
Y
2.90
5.90
2.95
5.95
E
1.50
4.50
1.55
4.55
Z
3.00
6.00
3.05
-
4 Represents production lot number
0 to 9, A to Z, reversed character of 0 to 9 and A to Z repeated (G,I,J,O,Q excepted)
Semiconductor Ltd.
3
XC6212 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Output ON/OFF Control
! ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNITS
Input Voltage
VIN
12
V
Output Current
IOUT
500
mA
Output Voltage
VOUT
VSS -0.3 ~ VIN +0.3
V
VCE
Pd
VSS -0.3 ~ VIN +0.3
V
mW
Topr
-40 ~ +85
O
C
-55 ~ +125
O
C
CE Input Voltage
Power Dissipation
SOT-23-5
Operating Ambient Temperature
Storage Temperature
Tstg
250
! ELECTRICAL CHARACTERISTICS
XC6212B SERIES
PARAMETER
Ta=25OC
SYMBOL
CONDITIONS
MIN
TYP.
MAX
UNITS
CIRCUIT
IOUT=30mA
× 0.98
VOUT(T)
× 1.02
V
1
mA
1
50
mV
1
mV
1
Output Voltage
VOUT (E)
Maximum Output Current
IOUTMAX
Load Regulation
∆VOUT
Dropout Voltage
Supply Current
Standby Current
Line Regulation
Input Voltage
150
1mA≤IOUT≤100mA
Vdif1
IOUT=30mA
15
E-1 (page 5)
Vdif2
IOUT=100mA
E-2 (page 5)
IDD
VCE=VIN
25
50
µA
2
0.01
0.10
µA
2
0.01
0.20
%/V
1
10
V
-
100
ppm/
O
C
1
70
dB
4
300
mA
1
mA
1
V
1
Istby
VCE=VSS
∆VOUT /
VOUT(T)+1.0V≤VIN≤10V
∆VIN ⋅ VOUT
IOUT=30mA
2
VIN
Output Voltage
∆VOUT /
Temperature Characteristics
∆Topr ⋅ VOUT
-40 C≤Topr≤85 C
Ripple Rejection Rate
PSRR
IOUT=50mA, f=10kHz
Current Limiter
Ilim
Short-circuit Current
Ishort
CE "High" Voltage
VCEH
CE "Low" Voltage
VCEL
CE "High" Current
ICEH
CE "Low" Current
ICEL
(NOTE 1)
(NOTE 2)
IOUT=30mA
O
mV
O
50
1.60
VIN
0.25
V
2
VCE=VIN
-0.10
0.10
µA
2
VCE=VSS
-0.10
0.10
µA
2
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).
(NOTE 3)
Vdif={VIN1(NOTE5)-VOUT1(NOTE4)}
(NOTE 4)
VOUT1=A voltage equal to 98% of the Output Voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input.
(NOTE 5)
VIN1=The Input Voltage when VOUT1 appears as Input Voltage is gradually decreased.
(NOTE 6)
Unless otherwise stated, VIN=VOUT(T)+1.0V
Semiconductor Ltd.
4
XC6212 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Output ON/OFF Control
! DROPOUT VOLTAGE
SYMBOL
PARAMETER
OUTPUT VOLTAGE
E-1
E-2
Vdif 1
Vdif 2
MIN
TYP
MAX
MIN
TYP
MAX
0.9
1100
1100
1110
1100
1150
1200
1.5
500
500
510
500
550
600
1.8
200
200
210
200
300
400
1.9
100
120
150
100
280
380
2.0
-
80
120
-
240
350
2.1 ~ 2.2
-
80
120
-
240
330
2.3 ~ 2.4
-
80
120
-
240
310
2.5 ~ 2.7
-
70
100
-
220
290
2.8 ~ 2.9
-
70
100
-
220
270
3.0
-
60
90
-
200
270
3.1 ~ 3.9
-
60
90
-
200
250
4.0 ~ 4.9
-
60
80
-
180
230
5.0 ~ 6.0
-
50
70
-
160
210
* The input voltage 2.0V (Min.) is needed to operate the series. When the output voltage is less than 2.0V,
2.0V-VOUT(T) of dropout voltage is needed at minimum.
Semiconductor Ltd.
5
XC6212 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Output ON/OFF Control
! TEST CIRCUITS
Circuit
1
VIN
CE
V
A
VOUT
VSS
CIN=1.0µF
(ceramic)
CL=1.0µF
(ceramic)
RL
V
V
Circuit
2
A
VIN
A
Circuit
CE
VOUT
VSS
3
VIN
CE
CIN=1.0µF
(ceramic)
Circuit
OPEN
VOUT
VSS
F.F.T
CL=1.0µF
(ceramic)
IOUT=10mA
4
VIN
VIN={VOUT+1} VDC
+0.5Vp-pAC
CE
V
VOUT
VSS
IOUT=50mA
CL=1.0µF
(ceramic)
V
Semiconductor Ltd.
6
XC6212 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Output ON/OFF Control
! OPERATIONAL EXPLANATION
Output voltage control with the XC6212 series :
VIN
CE
ON/OFF
Control
each circuit
The voltage divided by resistors R1 & R2 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. The output voltage at the
VOUT pin is controlled & stabilized by a system of negative feedback.
Current
Limiter
VOUT
R2
The current limit circuit and short protect circuit operate in relation to
the level of output current. Further, the IC's internal circuitry can be
shutdown via the CE pin's signal.
R1
Voltage
Reference
VSS
Low ESR Capacitors
With the XC6212 series, a stable output voltage is achievable even if used with low ESR capacitors as a phase compensation circuit is built-in. In
order to ensure the effectiveness of the phase compensation, we suggest that an output capacitor (CL) is connected as close as possible to the
output pin (VOUT) and the VSS pin. Please use an output capacitor with a capacitance value of at least 1µF. Also, please connect an input capacitor
(CIN) of 0.1µF between the VIN pin and the VSS pin in order to ensure a stable power input.
Current Limiter, Short-Circuit Protection
The XC6212 series includes a combination of a fixed current limiter circuit & a foldback circuit which aid the operations of the current limiter and
circuit protection. When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. As a result
of this drop in output voltage, the foldback circuit operates, output voltage drops further and output current decreases. When the output pin is
shorted, a current of about 50mA flows.
CE Pin
The IC's internal circuitry can be shutdown via the signal from the CE pin with the XC6212 series. In shutdown mode, output at the VOUT pin will be
pulled down to the VSS level via R1 & R2. The operational logic of the IC's CE pin is selectable (please refer to the selection guide on page 3). Note
that as the standard XC6212B Type is ' Active High/No Pull Down', operations will become unstable with the CE pin open. Although the CE pin is
equal to an inverter input with CMOS hysteresis, with either the pull-up or pull-down options, the CE pin input current will increase when the IC is in
operation. We suggest that you use this IC with either a VIN voltage or a VSS voltage input at the CE pin. If this IC is used with the correct
specifications for the CE pin, the IC will operate normally. However, supply current may increase as a result of through current in the IC's internal
circuitry.
! NOTES on USE
1
Please use this IC within the stated absolute maximum ratings.
2
Where wiring impedance is high, operations may become unstable due to noise and/or phase lag
3
Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
The IC is liable to malfunction should the ratings be exceeded.
depending on output current. Please strengthen VIN and VSS wiring in particular.
Semiconductor Ltd.
7