limits apply over the specified temperature range,
T
J
= –40
°
C to +85
°
C.
At T
J
= +25°C, V
IN
= V
OUT
+ 1V (V
OUT
= 2.5V for REG101-A), V
ENABLE
= 1.8V, I
OUT
= 2mA, C
NR
= 0.01µF, and C
OUT
= 0.1µF
(1)
, unless otherwise noted.
REG101NA
REG101UA
PARAMETER
OUTPUT VOLTAGE
Output Voltage
REG101-2.5
REG101-2.8
REG101-2.85
REG101-3.0
REG101-3.3
REG101-5
REG101-A
Reference Voltage
Adjust Pin Current
Accuracy
Over Temperature
vs Temperature
Includes Line and Load
Over Temperature
DC DROPOUT VOLTAGE
(2)
For all models
Over Temperature
VOLTAGE NOISE
Without C
NR
With C
NR
(all fixed voltage models)
OUTPUT CURRENT
Current Limit
(3)
Over Temperature
Short Circuit Current
RIPPLE REJECTION
f = 120Hz
ENABLE CONTROL
V
ENABLE
High (output enabled)
V
ENABLE
Low (output disabled)
I
ENABLE
High (output enabled)
I
ENABLE
Low (output disabled)
Output Disable Time
Output Enable Time
THERMAL SHUTDOWN
Junction Temperature
Shutdown
Reset from Shutdown
GROUND PIN CURRENT
Ground Pin Current
Enable Pin Low
INPUT VOLTAGE
Operating Input Voltage Range
(4)
Specified Input Voltage Range
Over Temperature
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
SOT23-5 Surface Mount
SO-8 Surface Mount
V
IN
V
IN
> 1.8V
V
IN
> 1.8V
T
J
T
J
T
A
1.8
V
OUT
+ 0.4
V
OUT
+ 0.6
–40
–55
–65
Junction-to-Ambient
Junction-to-Ambient
200
150
10
10
10
+85
+125
+150
V
V
V
°C
°C
°C
°C/W
°C/W
I
GND
I
OUT
= 2mA
I
OUT
= 100mA
V
ENABLE
≤
0.5V
V
ENABLE
I
ENABLE
V
ENABLE
= 1.8V to V
IN
, V
IN
= 1.8V to 6.5
V
ENABLE
= 0V to 0.5V
C
OUT
= 1.0µF, R
LOAD
= 33Ω
C
OUT
= 1.0µF, R
LOAD
= 33Ω
V
OUT
2.5
2.8
2.85
3.0
3.3
5
V
REF
V
REF
I
ADJ
dV
OUT
/dT
I
OUT
= 2mA to 100mA, V
IN
= (V
OUT
+ 0.4V) to 10V
V
IN
= (V
OUT
+ 0.6V) to 10V
V
DROP
I
OUT
= 2mA
I
OUT
= 100mA
I
OUT
= 100mA
f = 10Hz to 100kHz
C
NR
= 0, C
OUT
= 0
C
NR
= 0.01µF, C
OUT
= 10µF
130
110
1.267
0.2
±0.5
50
±0.8
4
60
5.5
1
±1.5
±
2.2
±2.0
±
2.7
10
100
130
V
V
V
V
V
V
V
V
µA
%
%
ppm/°C
%
%
mV
mV
mV
µVrms
µVrms
220
240
mA
mA
mA
dB
V
IN
0.5
100
100
V
V
nA
nA
µs
ms
CONDITION
MIN
TYP
MAX
UNITS
V
n
23µVrms/V • V
OUT
7µVrms/V • V
OUT
170
60
I
CL
I
SC
I
OUT
= 100mA
65
1.8
–0.2
1
2
200
1.5
160
140
400
500
0.01
500
650
0.2
°C
°C
µA
µA
µA
θ
JA
θ
JA
NOTES: (1) The REG101 does not require a minimum output capacitor for stability. However, transient response can be improved with proper capacitor selection. (2) Dropout
voltage is defined as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at V
IN
= V
OUT
+ 1V at fixed load. (3) Current
limit is the output current that produces a 10% change in output voltage from V
IN
= V
OUT
+ 1V and I
OUT
= 2mA. (4) The REG101 no longer regulates when V
IN
< V
OUT
+ V
DROP
(MAX)
. In drop-out the impedance from V
IN
to V
OUT
is typically less than 1Ω at T
J
= +25°C.
2
REG101
SBVS026A
PIN CONFIGURATIONS
Top View
SO-8
V
OUT(2)
V
OUT(2)
NR/Adjust
(1)
GND
1
2
3
4
(U Package)
8
7
6
5
V
IN(3)
V
IN(3)
NC
Enable
V
IN
GND
Enable
1
2
3
SOT23-5
5
V
OUT
4
(N Package)
NR/Adjust
(1)
NOTE: (1) For REG101A-A: voltage setting resistor pin. All other models: noise reduction capacitor pin.
(2) Both pin 1 and pin 2 must be connected.
(3) Both pin 7 and pin 8 must be connected.
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Input Voltage, V
IN
....................................................... –0.3V to 12V
Enable Input ............................................................................ –0.3V to V
) ................................ –55°C to +125°C
Storage Temperature Range (T
A
) ................................... –65°C to +150°C
Lead Temperature (soldering, 3s, SOT23-5, and SO-8) ..................... +240°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
REG101
SBVS026A
3
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
331
PACKAGE
MARKING
R01B
ORDERING
NUMBER
(1)
REG101NA-5/250
REG101NA-5/2K5
REG101UA-5
REG101UA-5/2K5
REG101NA-3.3/250
REG101NA-3.3/2K5
REG101UA-3.3
REG101UA-3.3/2K5
REG101NA-3/250
REG101NA-3/2K5
REG101UA-3
REG101UA-3/2K5
REG101NA-2.85/250
REG101NA-2.85/2K5
REG101UA-2.85
REG101UA-2.85/2K5
REG101NA-2.8/250
REG101NA-2.8/2K5
REG101UA-2.8
REG101UA-2.8/2K5
REG101NA-2.5/250
REG101NA-2.5/2K5
REG101UA-2.5
REG101UA-2.5/2K5
REG101NA-A/250
REG101NA-A/2K5
REG101UA-A
REG101UA-A/2K5
TRANSPORT
MEDIA
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
PRODUCT
5V Output
REG101NA-5
PACKAGE
SOT23-5
"
REG101UA-5
"
SO-8
"
182
"
REG101U50
"
3.3V Output
REG101NA-3.3
"
SOT23-5
"
331
"
R01C
"
REG101UA-3.3
"
SO-8
"
182
"
REG101U33
"
3V Output
REG101NA-3
"
SOT23-5
"
331
"
R01D
"
REG101UA-3
"
SO-8
"
182
"
REG101U30
"
2.85V Output
REG101NA-2.85
"
SOT23-5
"
331
"
R01N
"
REG101UA-2.85
"
SO-8
"
182
"
REG101285
"
2.8V Output
REG101NA-2.8
"
SOT23-5
"
331
"
R01E
"
REG101UA-2.8
"
SO-8
"
182
"
REG101U28
"
2.5V Output
REG101NA-2.5
"
SOT23-5
"
331
"
R01G
"
REG101UA-2.5
"
SO-8
"
182
"
REG101U25
"
Adjustable Output
REG101NA-A
"
SOT23-5
"
331
"
R01A
"
REG101UA-A
"
SO-8
"
182
"
REG101UA
"
"
"
"
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces
of “REG101UA-5/2K5” will get a single 2500-piece Tape and Reel.
Many custom output voltage versions, from 1.3V to 5.1V in 50mV increments, are available upon request. Minimum order
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