ULTRA SMALL PACKAGE VOLTAGE
REGULATOR
R1100 SERIES
1
OUTLINE
The R1100 Series are CMOS-based voltage regulator ICs with high accuracy output voltage and ultra-low
supply current developed. Each of these ICs consists of a driver transistor, a voltage reference unit, an error
amplifier, resistors for setting output voltage and a current limit circuit.
The output voltage of these ICs is fixed with high accuracy.
Even if V
OUT
is shorted to the GND, the included current limit circuit protects the ICs from the destruction.
Since the package for these ICs is SON1408-3, high density mounting of the ICs on boards is possible.
FEATURES
Ultra-Low Supply Current .............................................Typ. 1.5
A (V
OUT
=3.0V: V
DD
=3.0V)
Dropout Voltage............................................................Typ. 20mV (I
OUT
=
1mA, R1100D301C)
Low Temperature-Drift Coefficient of Output Voltage...Typ.
100ppm/
C
Excellent Line Regulation.............................................Typ. 0.05%/V
High Accuracy Output Voltage......................................
2.0% (1.2V
V
OUT
4.0V),
24mV (V
OUT
<1.2V)
Ultra-Small Package.....................................................SON1408-3
Built-in Current Limit Circuit
APPLICATIONS
Power source for battery-powered equipment.
Power source for cameras, VCRs, camcorders, hand-held audio instruments and hand-held communication
equipment.
Precision voltage references.
R1100
2
BLOCK DIAGRAMS
SELECTION GUIDE
The output voltage, the active type, and the packing type for the ICs can be selected at the user's request.
The selection can be made with designating the part number as shown below:
R1100xxxxx-xx
Part Number
a b c d e
Code Contents
a
Designation of Package Type
D: SON1408-3
b
Setting Output Voltage (V
OUT
):
Stepwise setting with a step of 0.1V in the range of 0.9V to 4.0V is possible.
c 1:
Fixed
d C:
Fixed
e
Designation of Taping Type: TR (Refer to Taping Specifications)
Vref
V
D D
O U T
G N D
Current Limit
R1100
3
PIN CONFIGURATION
PIN DESCRIPTION
SON-1408
Pin No
Symbol
Pin Description
1 V
OUT
Output
Pin
2 V
DD
Input
Pin
3 GND
Ground
Pin
ABSOLUTE MAXIMUM RATINGS
Symbol Item
Rating
Unit
V
IN
Input
Voltage
6.5
V
V
OUT
Output
Voltage
Vss
-
0.3 to V
IN
+
0.3
V
I
OUT
Output
Current
180
mA
P
D
Power
Dissipation
(SON1408)*
250
mW
Topt Operating
Temperature
-
40 to
+
85
C
Tstg
Storage Temperature
-
55 to
+
125
C
*Note 1: This specification is at mounted on board.
P
D
depends on conditions of mounting on board. This specification is based on the measurement at the
condition below:
Measurement Conditions
Environment: Mounted on board (Wind velocity 0m/s)
Board Material: FR-4 (2-layer)
Board dimensions: 40mm
40mm
t1.6mm
Copper Area: 50%
Tab (3pin) pattern width is same as lead width and connected to GND plane.
(mark side)
1
1
1
1
2
2
2
2
3
3
3
3
SON1408
SON1408
SON1408
SON1408
R1100
5
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
Topt
=
25
C
Output Voltage
Output Current
Load Regulation
Dropout Voltage
V
OUT
(V)
I
OUT
(mA)
V
OUT
/
I
OUT
(mV)
V
DIF
(mV)
Part
Number
Condi-
tions
Min. Typ. Max.
Condi-
tions
Min.
Typ.
Condi-
tions
Typ.
Max.
Condi-
tions
Typ.
Max.
R1100D091C 0.876
0.900
0.924
450
750
R1100D101C 0.976
1.000
1.024
350
700
R1100D111C 1.076
1.100
1.124
R1100D121C 1.176
1.200
1.224
250 600
R1100D131C 1.274
1.300
1.326
R1100D141C 1.372
1.400
1.428
35
V
IN
-V
OUT
=
2.0V
1mA
<
=
I
OUT
<
=
20mA
7.5 20
100 400
R1100D151C 1.470
1.500
1.530
R1100D161C 1.568
1.600
1.632
50 100
R1100D171C 1.666
1.700
1.734
R1100D181C 1.764
1.800
1.836
R1100D191C 1.862
1.900
1.938
R1100D201C 1.960
2.000
2.040
R1100D211C 2.058
2.100
2.142
R1100D221C 2.156
2.200
2.244
R1100D231C 2.254
2.300
2.346
R1100D241C 2.352
2.400
2.448
R1100D251C 2.450
2.500
2.550
R1100D261C 2.548
2.600
2.652
R1100D271C 2.646
2.700
2.754
R1100D281C 2.744
2.800
2.856
R1100D291C 2.842
2.900
2.958
65
V
IN
-V
OUT
=
2.0V
1mA
<
=
I
OUT
<
=
35mA
20
40
25 50
R1100D301C 2.940
3.000
3.060
R1100D311C 3.038
3.100
3.162
R1100D321C 3.136
3.200
3.264
R1100D331C 3.234
3.300
3.366
R1100D341C 3.332
3.400
3.468
R1100D351C 3.430
3.500
3.570
R1100D361C 3.528
3.600
3.672
R1100D371C 3.626
3.700
3.774
R1100D381C 3.724
3.800
3.876
R1100D391C 3.822
3.900
3.978
R1100D401C
V
IN
-V
OUT
=
2.0V
10
A
<
=
I
OUT
<
=
10mA
3.920 4.000 4.080
V
IN
-V
OUT
=
2.0V
100
V
IN
-V
OUT
=
2.0V
1mA
<
=
I
OUT
<
=
50mA
35 60
I
OUT
=
1mA
20 30
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
(Common characteristics)
Topt
=
25
C
Symbol Item
Conditions
Min.
Typ.
Max.
Unit
I
SS
Supply
Current
V
IN
=
setV
OUT
+
2.0
1.5
3.0
A
V
OUT
/
V
IN
Line Regulation
I
OUT
=
1mA
setV
OUT
+
0.5V
<
=
V
IN
<
=
6V
-0.20 0.20
%/V
V
IN
Input
Voltage
1.2
6.0 V
V
OUT
/
Topt
Output Voltage
Temperature Coefficient
I
OUT
=
10mA
-
40
C
<
=
Topt
<
=
85
C
100
ppm/
C
I
LIM
Short Current Limit
V
OUT
=
0V
40
mA
OPERATION
In these ICs, the output voltage V
OUT
is detected by Feedback Registers, and the detected output voltage is
compare with a reference voltage by the error amplifier, so that a constant voltage is output.
A current limit circuit against short protection and a chip enable circuit are included.
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