XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
July 4, 2003 Ver. 3
Low Power Consumption
Dropout Voltage
Applications
: 25 µA (TYP)
: 60mV (IOUT=30mA)
200mV (IOUT=100mA)
Output Current
: 150 mA (VOUT < 1.7V)
240 mA ( VOUT ≥ 1.8V)
(300mA limit)
Highly Accurate
: ±2% (±30mV when VOUT=1.5V)
Output Voltage Range
: 0.9V ~ 5.0 V (50mV Step)
Low ESR capacitor compatible
General Description
CIN
1µF
VSS
3
NC
Portable games
Cameras, Video recorders
Reference Voltage Source
Battery Powered Equipment
VIN
5
VOUT
4
: 150 mA (VOUT < 1.7V)
240 mA ( VOUT ≥ 1.8V)
(300mA limit)
Dropout Voltage
: 200mV (IOUT=100mA)
Operating Voltage Range
: 2.0V ~ 6.0V
Output Voltage Range
: 0.9V ~ 5.0V (50mV Step)
Highly Accurate
: ±2% (VOUT>1.5V)
: ±30mV (VOUT≤1.5V)
Typical Applications
2
Cordless phones and radio communication equipment
Maximum Output Current
The XC6211 series is available in the SOT-23-5 package.
CE
Mobile phones
Features
The XC6211 series are highly accurate, low noise, CMOS LDO
Voltage Regulators. Offering low output noise, high ripple rejection
ratio, low dropout and very fast turn-on times, the XC6211 series
is ideal for today’s cutting edge mobile phone.
Internally the XC6211 includes a reference voltage source, error
amplifiers, driver transistors, current limiters and phase
compensators. The XC6211’s current limiters' foldback circuit also
operates as a short protect for the output current limiter and the
output pin.
The output voltage is set by laser trimming. Voltages are
selectable in 50mV steps within a range of 0.9V to 5.0V. The
XC6211 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 CE function allows the output of regulator to be turned off,
resulting in greatly reduced power consumption.
1
z
z
z
z
z
z
CL
1µF
1
Low Power Consumption
: 25 µA (TYP.)
Standby Current
: Less than 0.1µA (TYP.)
High Ripple Rejection
: 65dB (10kHz)
Operating Temperature Range
: -40OC ~ +85OC
Low ESR Capacitor Compatible
: Ceramic capacitor
Ultra Small Packages
: SOT-23-5
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
Pin Configuration
VIN
5
VOUT
CE
PIN NUMBER
4
2
1
Pin Assignment
PIN NAME
FUNCTION
SOT-25
1
CE
On/Off Control 1
2
VSS
Ground
3
NC
No Connection
4
VOUT1
Output 1
5
VIN
Power Input
3
VSS
NC
SOT-23-5
(TOP VIEW)
Block Diagram
VIN
CE
ON/OFF
Control
each circuit
Current
Limit
VOUT
R2
R1
VSS
Voltage
Reference
2
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
Product Classification
z 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.)
z Ordering Information
DESIGNATOR
XC6211123456
SYMBOL
DESCRIPTION
CE Pin Logic :
1
2
3
A
B
Active 'High' (pull-down resistor built in)
C
Active 'Low' (pull-up resistor built in)
D
Active 'Low' (no pull-up resistor built in)
Integer
2
4
A
5
M
Active 'High' (no pull-down resistor built in)
Output Voltage :
e.g. 2=3, 3=0, ⇒ 3.0V
Output Voltage: 100mV increments, ±2% accuracy
e.g. 2=2, 3=8, 4=2 ⇒ 2.80V, ±2%
Output Voltage : 50mV increments, ±2% accuracy
e.g. 2=2, 3=8, 4=A ⇒ 2.85V
Package Type :
SOT-25 (SOT-23-5)
Device Orientation :
6
R
Embossed Tape : Standard Feed
L
Embossed Tape : Reverse Feed
Absolute Maximum Rating
Ta = 25OC
SYMBOL
VIN
RATINGS
UNITS
7.0
V
IOUT
VOUT
500
VSS -0.3 ~ VIN +0.3
mA
Output Voltage
CE Pin Voltage
Power Dissipation
VCE
Pd
VSS -0.3 ~ VIN +0.3
V
mW
Operating Ambient Temperature
Topr
-40 ~ +85
O
-55 ~ +125
O
PARAMETER
Input Voltage
Output Current
Storage Temperature
250
Tstg
3
V
C
C
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
Electrical Characteristics
XC6211B Series
Ta=25OC
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
Output Voltage
VOUT (E)
× 0.98
VOUT(T)
× 1.02
Maximum Output Current
IOUTMAX
IOUT=30mA
*1
Load Regulation
∆VOUT
1mA≤IOUT≤100mA
Vdif1
IOUT=30mA
15
E-1
Vdif2
IOUT=100mA
E-2
Supply Current
IDD
VCE=VIN
25
Standby Current
Istby
VCE=VSS
∆VOUT /
VOUT(T)+1.0V≤VIN≤7.0V
∆VIN ⋅ VOUT
IOUT=30mA
Dropout Voltage
Line Regulation
Input Voltage
VIN
150
50
UNITS CIRCUIT
V
1
mA
1
mV
1
mV
1
50
mV
µA
2
0.01
0.10
µA
2
0.01
0.20
%/V
1
6.0
V
-
100
ppm/
O
C
1
65
dB
4
2.0
Output Voltage
∆VOUT /
IOUT=30mA
Temperature Characteristics
∆Topr ⋅ VOUT
-40OC≤Topr≤85OC
Ripple Rejection Rate
PSRR
IOUT=50mA, f=10kHz
Current Limiter
Ilim
300
mA
1
Short-circuit Current
Ishort
50
mA
1
EN "High" Voltage
VCEH
VIN
V
1
EN "Low" Voltage
VCEL
0.25
2
EN "High" Current
ICEH
VCE=VIN
-0.10
0.10
V
µA
2
EN "Low" Current
ICEL
VCE=VSS
-0.10
0.10
µA
2
NOTE
(NOTE 1)
(NOTE 2)
(NOTE 3)
(NOTE 4)
(NOTE 5)
(NOTE 6)
1.60
*1 : 150mA (VOUT<1.7V), 240mA (VOUT≥1.8V)
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
Dropout Voltage
SYMBOL
PARAMETER
E-1
E-2
Vdif 1
Vdif 2
MAX
MIN
TYP
MAX
MIN
TYP
OUTPUT VOLTAGE
1110
1100
0.90
1100
1100
1200
1150
1.50
550
600
500
500
510
500
200
200
210
200
300
400
1.80 ~ 1.85
280
380
150
1.90 ~ 1.95
100
120
100
350
2.00 ~ 2.05
80
120
240
2.10 ~ 2.25
120
240
330
80
2.30 ~ 2.45
80
120
240
310
2.50 ~ 2.75
70
100
220
290
2.80 ~ 2.95
70
100
220
270
3.00 ~ 3.05
60
90
200
270
3.10 ~ 3.95
60
90
200
250
4.00 ~ 4.95
60
80
180
230
5.00
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.
4
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
Test Circuits
Circuit 1
VIN
A
VOUT
CL=1.0µF
(ceramic)
CIN=1.0µF
(ceramic)
CE
V
VSS
RL
V
V
Circuit 2
A
VIN
A
CE
VOUT
OPEN
VSS
Circuit 3
VIN
VOUT
CIN=1.0µF
(ceramic)
CE
CL=1.0µF
(ceramic)
F.F.T
VSS
IOUT=10mA
Circuit 4
VIN
CE
V
VOUT
IOUT=50mA
CL=1.0µF
(ceramic)
VSS
V
VIN={VOUT+1}VDC
+0.5Vp-pAC
5
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
Operational Explanation
Output voltage control with the XC6211 series:
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 and stabilized by a system of negative feedback. 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.
VIN
CE
ON/OFF
Control
each circuit
Current
Limit
VOUT
R2
R1
VSS
Voltage
Reference
Low ESR Capacitors
With the XC6211 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 (V OUT) and the VSS pin. Please use an
output capacitor with a capacitance value of at least 1µF. Also, please connect an input capacitor (C IN) 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 XC6211 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 XC6211 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 XC6211B type's
regulator 1 and 2 are both ' High Active/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
operational logic is fixed and 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.
The IC is liable to malfunction should the ratings be exceeded.
2 Where wiring impedance is high, operations may become unstable due to noise and/or phase lag
depending on output current. Please keep the resistance low between VIN and VSS wiring in particular.
3 Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
6
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
! Typical Performance Characteristics
(1) Output Voltage vs. Output Current
XC6211x182
CIN=1µF(ceramics), CL=1µF(ceramics)
2.0
Output Voltage VOUT (V)
2.0
Output Voltage VOUT (V)
XC6211x182
VIN=2.8V,
CIN=1µF(Ceramic), CL=1µF(ceramic)
1.5
1.0
Topr = 85OC
25OC
- 40OC
0.5
1.5
VIN=4.8V
1.0
VIN=3.8V
0.5
VIN=2.1V
0.0
0.0
0
VIN=2.8V
0
50 100 150 200 250 300 350 400
100 150 200 250 300 350 400
Output Current IOUT (mA)
Output Current IOUT (mA)
XC6211x252
XC6211x252
VIN=3.5V
CIN=1µF(ceramics), CL=1µF(ceramics)
3.0
50
CIN=1µF(ceramics), CL=1µF(ceramics)
3.0
Output Voltage VOUT (V)
Output Voltage VOUT (V)
VIN=4.5V
2.5
2.0
1.5
1.0
Topr = 85OC
25OC
- 40OC
0.5
0.0
2.5
2.0
VIN=5.5V
1.5
1.0
VIN=3.5V
0.5
VIN=2.8V
0.0
0
50 100 150 200 250 300 350 400
0
Output Current IOUT (mA)
Output Current IOUT (mA)
XC6211x302
3.5
3.0
2.5
2.0
1.5
Topr = 85OC
25OC
- 40OC
1.0
0.5
0.0
0
CIN=1µF(ceramic), CL=1µF(ceramic)
4.0
Output Voltage VOUT (V)
Output Voltage VOUT (V)
XC6211x302
VIN=4.0V,
CIN=1µF(ceramic), CL=1µF(ceramic)
4.0
50 100 150 200 250 300 350 400
3.5
VIN=4V
3.0
VIN=5V
2.5
2.0
VIN=6V
1.5
VIN=3.3V
1.0
0.5
0.0
50 100 150 200 250 300 350 400
0
50 100 150 200 250 300 350 400
Output Current IOUT (mA)
Output Current IOUT (mA)
7
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(2) Output Voltage vs. Input Voltage
XC6211x182
XC6211x182
Topr=25OC,
CIN=1uF (ceramics), CL=1uF(ceramics)
1.90
Output Voltage VOUT (V)
Output Voltage VOUT (V)
2.0
1.8
1.6
1.4
IOUT=0mA
=1mA
=30mA
=100mA
1.2
1.8
1.85
1.80
1.75
IOUT=0mA
=1mA
=30mA
1.70
1.65
3.0
1.0
1.3
Topr=250C,
CIN=1uF (ceramics), CL=1uF(ceramics)
2.3
4.0
Input Voltage VIN (V)
Topr=25OC,
CIN=1uF (ceramics), CL=1uF(ceramics)
Output Voltage VOUT (V)
Output Voltage VOUT (V)
2.60
2.5
2.3
2.1
IOUT=0mA
=1mA
=30mA
=100mA
1.9
2.5
Topr=25OC,
CIN=1uF (ceramics), CL=1uF(ceramics)
2.55
2.50
2.45
IOUT=0mA
=1mA
=30mA
2.40
2.35
3.0
1.7
2
3
3.5
4.0
XC6211x302
Output Voltage VOUT (V)
Output Voltage VOUT (V)
3.10
3.0
2.8
IOUT = 0mA
= 1mA
= 30mA
= 100mA
2.4
2.2
2.5
3
5.0
5.5
6.0
XC6211x302
Topr=25OC,
CIN=1uF (ceramics), CL=1uF(ceramics)
2.6
4.5
Input Voltage VIN (V)
Input Voltage VIN (V)
3.2
6.0
XC6211x252
XC6211x252
2.7
5.0
Input Voltage VIN (V)
Topr=25OC,
CIN=1uF (ceramics), CL=1uF(ceramics)
3.05
3.00
2.95
2.85
4.0
3.5
Input Voltage VIN (V)
IOUT = 0mA
= 1mA
= 30mA
2.90
4.5
5.0
5.5
Input Voltage VIN (V)
8
6.0
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(3) Dropout Voltage vs. Output Current
XC6211x252
XC6211x182
CIN=1uF (ceramics), CL=1uF(ceramics)
0.8
Topr= 85OC
= 25OC
= -40OC
0.6
CIN=1uF (ceramics), CL=1uF(ceramics)
1.0
Dropout Voltage Vdif (V)
Dropout Voltage Vdif (V)
1.0
0.4
0.2
0.0
0.8
Topr= 85OC
= 25OC
= -40OC
0.6
0.4
0.2
0.0
0
40
80
120
160
200
0
40
Output Current IOUT (mA)
80
120
160
200
Output Current IOUT (mA)
XC6211x302
CIN=1uF (ceramics), CL=1uF(ceramics)
Dropout Voltage Vdif (V)
1.0
0.8
Topr= 85OC
= 25OC
= -40OC
0.6
0.4
0.2
0.0
0
40
80
120
160
200
Output Current IOUT (mA)
(4) Supply Current vs. Input Voltage
XC6211x182
XC6211x252
50.0
Supply Current ISS (µA)
Supply Current ISS (µA)
50.0
40.0
30.0
20.0
Topr= 85OC
= 25OC
= -40OC
10.0
0.0
40.0
30.0
20.0
Topr= 85OC
= 25OC
= -40OC
10.0
0.0
0
1
2
3
4
5
6
0
Input Voltage VIN (V)
1
2
3
4
Input Voltage VIN (V)
9
5
6
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(4) Supply Current vs. Input Voltage (Continued)
XC6211x302
Supply Current ISS (µA)
50.0
40.0
30.0
20.0
Topr= 85OC
= 25OC
= -40OC
10.0
0.0
0
1
2
3
4
5
6
Input Voltage VIN (V)
(5) Output Voltage vs. Ambient Temperature
XC6211x252
XC6211x182
2.60
Output Voltage VOUT (V)
Output Voltage VOUT (V)
1.90
VIN=2.8V
CIN=1uF (ceramics), CL=1uF(ceramics)
1.85
1.80
1.75
IOUT = 0mA
1mA
30mA
100mA
1.70
1.65
1.60
-20
0
20
40
60
80
100
2.50
2.45
IOUT = 0mA
1mA
30mA
100mA
2.40
2.35
-40
O
Ambient Temperature Topr ( C)
3.05
3.00
2.95
IOUT = 0mA
1mA
30mA
100mA
2.85
2.80
-40
-20
0
20
40
60
80
0
20
40
60
80
Ambient Temperature Topr ( C)
VIN=4.0V
CIN=1uF (ceramics), CL=1uF(ceramics)
2.90
-20
O
XC6211x302
Output Voltage VOUT (V)
2.55
2.30
-40
3.10
VIN=3.2V
CIN=1uF (ceramics), CL=1uF(ceramics)
100
O
Ambient Temperature Topr ( C)
10
100
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(6) Supply Current vs. Ambient Temperature
XC6211x252
XC6211x182
VIN=2.8V
40.0
30.0
20.0
10.0
40.0
30.0
20.0
10.0
0.0
0.0
-40
-20
0
20
40
60
80
-40
100
VIN=4.0V
40.0
30.0
20.0
10.0
0.0
-40
-20
0
20
40
60
80
0
20
40
60
80
Ambient Temperature Topr ( C)
XC6211x302
50.0
-20
O
Ambient Temperature Topr (OC)
Supply Current ISS (µA)
VIN=3.5V
50.0
Supply Current ISS (µA)
Supply Current ISS (µA)
50.0
100
Ambient Temperature Topr (OC)
11
100
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(7) Input Transient Response
XC6211x182
1.80
1.78
2
1.82
1
1.80
-1
XC6211x182
XC6211x252
1.86
Input Voltage
1.84
2
1.82
1
1.80
Output Voltage
-1
1.78
5
4
1.76
2
2.52
1
2.58
2.56
2.54
2
2.52
2.50
Output Voltage
0
2.48
-1
2.48
2.46
XC6211x252
3
1
2.50
Output Voltage
Time (40usec/div)
5
4
Input Voltage VIN (V)
Input Voltage
2.56
2.54
-1
Output Voltage VOUT (V)
Input Voltage VIN (V)
4
Input Voltage
2.58
3
XC6211x252
tr = tf = 5use,
CL=1uF (ceramics), IOUT=10mA
tr = tf = 5use,
CL=1uF (ceramics), IOUT=1mA
0
Time (40usec/div)
1.78
1.76
Time (40usec/div)
4
5
Output Voltage
Time (40usec/div)
5
0
1.84
0
1.76
tr = tf = 5use,
CL=1uF (ceramics), IOUT=100mA 1.88
3
Input Voltage
3
Input Voltage
2
2.52
1
2.50
Output Voltage
2.48
2.46
Time (40usec/div)
12
2.56
2.54
-1
Time (40usec/div)
2.58
3
0
2.46
tr = tf = 5use,
CL=1uF (ceramics), IOUT=100mA
Output Voltage VOUT (V)
Output Voltage
1.86
Output Voltage VOUT (V)
1
1.88
Output Voltage VOUT (V)
1.82
-1
Input Voltage VIN (V)
1.84
tr = tf = 5use,
CL=1uF (ceramics), IOUT=10mA
4
Input Voltage VIN (V)
1.86
Input Voltage
2
0
5
Input Voltage VIN (V)
3
1.88
Output Voltage VOUT (V)
Input Voltage VIN (V)
4
XC6211x182
Output Voltage VOUT (V)
5
tr = tf = 5use,
CL=1uF (ceramics), IOUT=1mA
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(7) Input Transient Response (Continued)
3.06
Input Voltage
4
3.04
3
3.02
2
3.00
Output Voltage
1
0
2.98
Input Voltage VIN (V)
Input Voltage VIN (V)
5
3.08
Output Voltage VOUT (V)
6
tr = tf = 5use,
CL=1uF (ceramics), IOUT=1mA
6
tr = tf = 5use,
CL=1uF (ceramics), IOUT=10mA 3.08
5
3.06
Input Voltage
4
3
3.02
2
3.00
Output Voltage
1
2.96
3.04
0
Output Voltage VOUT (V)
XC6211x302
XC6211x302
2.98
2.96
Time (40usec/div)
Time (40usec/div)
XC6211x302
tr = tf = 5use,
CL=1uF (ceramics), IOUT=100mA
Input Voltage VIN (V)
5
3.08
3.06
Input Voltage
4
3.04
3
3.02
2
3.00
1
Output Voltage
0
2.98
Output Voltage VOUT (V)
6
2.96
Time (40usec/div)
(8) Load Transient Response
XC6211x182
2.0
250
1.9
Output Voltage
1.8
200
1.7
150
1.6
100
1.5
50mA
Output Current
50
VIN=2.8V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics)
300
250
Output Voltage
1.8
200
1.7
150
1.6
1.5
Output Current
100mA
50mA
100
50
10mA
1.4
1.4
0
0
Time (40usec/div)
Time (40usec/div)
13
Output Current IOUT (mA)
300
Output Voltage VOUT (V)
Output Voltage VOUT (V)
1.9
XC6211x182
Output Current IOUT (mA)
2.0
VIN=2.8V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics)
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(8) Load Transient Response (Continued)
XC6211x252
2.7
250
2.6
1.8
200
1.7
150
100
100mA
1.5
50
2.5
200
2.4
150
2.3
2.2
Time (40usec/div)
XC6211x252
XC6211x252
2.6
250
2.6
2.4
Output Voltage VOUT (V)
Output Voltage
Output Current IOUT (mA)
Output Voltage VOUT (V)
0
Time (40usec/div)
2.7
200
50mA
50
2.1
250
Output Voltage
200
2.4
100
100mA
VIN=3.5V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics) 300
2.5
150
Output Current
150
Output Current
2.3
100
100mA
2.2
50
10mA
0
2.1
0
Time (40usec/div)
Time (40usec/div)
XC6211x302
XC6211x302
250
Output Voltage
3.0
200
2.9
150
2.8
100
50mA
Output Current
50
VIN=4.0V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics)300
3.1
Output Voltage VOUT (V)
3.1
3.2
Output Current IOUT (mA)
Output Voltage VOUT (V)
VIN=4.0V, tr = tf = 5use,
3.2 CIN=1uF (ceramics), CL=1uF (ceramics) 300
2.7
50
10mA
2.7
2.2
50mA
2.1
VIN=3.5V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics) 300
2.3
100
Output Current
0
2.5
250
Output Voltage
10mA
1.4
300
250
Output Voltage
3.0
200
2.9
150
2.8
100mA
Output Current
100
50mA
2.7
50
10mA
2.6
0
2.6
Time (40usec/div)
0
Time (40usec/div)
14
Output Current IOUT (mA)
Output Current
1.6
VIN=3.5V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics)
Output Current IOUT (mA)
Output Voltage
Output Voltage OUT (V)
Output Voltage VOUT (V)
1.9
Output Current IOUT (mA)
2.0
VIN=2.8V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics)
300
Output Current IOUT (mA)
XC6211x182
XC6211 Series
High Speed LDO Regulator
Preliminary
Low ESR Cap. Compatible, On / Off Switch
(8) Load Transient Response (Continued)
XC6211x302
3.1
300
250
Output Voltage
3.0
200
2.9
150
Output Current
2.8
100
100mA
2.7
50
Output Current IOUT (mA)
Output Voltage VOUT (V)
3.2
VIN=4.0V, tr = tf = 5use,
CIN=1uF (ceramics), CL=1uF (ceramics)
10mA
2.6
0
Time (40usec/div)
(9) Ripple Rejection Rate
XC6211x252
XC6211x182
VIN=2.8V, DC + Vp-pAC,
IOUT=50mA, CL=1uF (ceramics)
Ripple Rejection Rate RR (dB)
Ripple Rejection Rate RR (dB)
100
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
10
100
0.01
Ripple Frequency f (kHz)
VIN=3.0V, DC + Vp-pAC,
IOUT=50mA, CL=1uF (ceramics)
100
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
10
Ripple Frequency f (kHz)
0.1
1
10
Ripple Frequency f (kHz)
XC6211x302
Ripple Rejection Rate RR (dB)
VIN=3.5V, DC + Vp-pAC,
IOUT=50mA, CL=1uF (ceramics)
100
100
15
100