LOW DROPOUT
VOLTAGE REGULATOR
1
RN5RT SERIES
OUTLINE
The RN5RT Series are voltage regulator ICs with high output voltage accuracy and low supply current developed
through the use of a CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an
error amplifier, output voltage setting resistors and a current limit circuit.
The output voltage of these ICs is fixed with high accuracy.
The built-in Driver Transistor of low ON Resistance permits developing of low dropout CMOS type regulator as
RN5RT Series.
Even if V
OUT
is shorted to GND, the current limit circuit protects the ICs from destruction.
Furthermore, these ICs have a chip enable function, so that the supply current on standby can be minimized.
Since the package for these ICs is the SOT-23-5 (Mini-mold) package, high density mounting of the ICs on
boards is possible.
Ultra-Low Supply Current...........................................TYP. 4A (except I
CEL
)
Standby Mode..............................................................TYP. 0.1A
Low Dropout Voltage ..................................................TYP. 0.3V (I
OUT
=60mA, RN5RT30A)
Low Temperature-Drift Coefficient of Output Voltage........TYP. 100ppm/C
Excellent Line Regulation...........................................TYP. 0.15%/V
Output Voltage .............................................................Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V
is possible (refer to Selection Guide).
High Accuracy Output Voltage ..................................2.0%
Built-in Current Limit Circuits ...................................TYP. 30mA
Small Package..............................................................SOT-23-5 (Mini-mold)
FEATURES
APPLICATIONS
Power source for battery-powered equipment.
Power source for cellular phones, cameras, VCRs, camcorders, hand-held audio instruments and hand-held com-
munication equipment.
Power source for domestic appliances.
SELECTION GUIDE
RN5RT
2
BLOCK DIAGRAM
2
5
3
1
Vref
V
OUT
GND
V
DD
+
CE
Current Limit
RN5RT
Part Number
a b c d
}
The output voltage, the packing type, and the taping type for the ICs can be selected at the user's request.
These selections can be made by designating the part number as shown below:
Code
Contents
a
Setting Output Voltage (V
OUT
) :
Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible.
b
A
Designation of Packing Type :
c
A : Taping
C : Antistatic bag (for Samples only)
d
Designation of Taping Type :
Ex. TR, TL (refer to Taping Specifications ; TR type is the standard direction.)
RN5RT
3
PIN CONFIGURATION
PIN DESCRIPTION
SOT-23-5
1
2
3
5
4
(mark side)
Pin No.
Symbol
Description
1
GND
Ground Pin
2
V
DD
Input Pin
3
V
OUT
Output Pin
4
NC
No Connection
5
CE
Chip Enable Pin
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under
any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation
above these absolute maximum ratings may cause degradation or permanent damage to the device. These
are stress ratings only and do not necessarily imply functional operation below these limits.
Symbol
Item
Ratings
Unit
V
IN
Input Voltage
9
V
V
CE
Input Voltage (CE Pin)
0.3 to V
IN
+0.3
V
V
OUT
Output Voltage
0.3 to V
IN
+0.3
V
I
OUT
Output Current
150
mA
P
D
Power Dissipation
150
mW
Topt
Operating Temperature
40 to +85
C
Tstg
Storage Temperature
55 to +125
C
Tsolder
Lead Temperature (Soldering)
260C, 10s
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