R1152N SERIES
High Input Voltage Tolerant Boost Voltage Regulator
NO.EA-108-0601
OUTLINE
The R1152N Series are CMOS-based positive voltage regulator controller ICs with high output voltage
accuracy, low supply current.
The high output current regulator can be composed with this IC, an external power transistor, and capacitors.
Each of these voltage regulator controllers consists of a voltage reference unit, an error amplifier, comparators,
resistors for output voltage setting, a peak current limit protection circuit, a short current limit circuit, and a chip
enable circuit. The output voltage of these ICs is internally fixed.
In addition to low supply current by the merit of CMOS process, the chip enable function prolongs the battery
life.
Maximum operating input voltage is up to 18V, thus these ICs are very suitable for the power supply for
hand-held equipment and other power management applications using various AC adapters.
Since the package for these ICs is SOT-23-5 package, high density mounting of the ICs on boards is possible.
FEATURES
•
•
•
•
•
•
Ultra-Low Supply Current..........................Typ.10µA
Standby Mode ...........................................Typ.0.1µA
Low Dropout Voltage................................ Typ.0.1V(I
OUT
=300mA,V
OUT
=5.0V,Depends
on External Transister)
High Output Voltage Accuracy .................
±2.0%
Small Packages ....................................... SOT-23-5 (Mini-mold)
Output Voltage ......................................... Stepwise setting with a step of 0.1V in the range of 2.5V to
12.0V (Fixed type) or adjustable (with external divider
resistors can be set more than12.1V,
the reference voltage is 2.5V)
Operating Input Voltage ........................... Max.18V
Built-in Chip Enable Circuit (“H” active)
Built-in Current Limit Circuit
Output Short Current Limit Circuit
•
•
•
•
APPLICATIONS
•
•
•
•
Power source for home appliances such as refrigerators, rice cookers, etc.
Power source for car audio equipment, car navigation system, and ETC system.
Power source for notebook PCs, digital TVs, cordless phones, and LAN system.
Power source for copiers, printers, facsimiles, and scanners.
1
R1152N
BLOCK DIAGRAMS
V
IN
3
4
EXT
＋
Vref
－
5
V
OUT
CE
1
Current Limit
2
GND
SELECTION GUIDE
The output voltage, mask option code, and the taping 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;
R1152NxxxB-xx
↑ ↑ ↑
a b c
Code
a
b
c
←Part
Number
Contents
Designation of Voltage Setting:
0.1V Stepwise Setting in the range from 2.5V to 12.0V (Fixed)
Chip Enable Polarity:
B: with CE (active at “H” type).
Designation of Taping Type :
Ex. TR (Refer to Taping Specifications.)
2
R1152N
ELECTRICAL CHARACTERISTICS
•
R1152NxxxB
Topt=25°C
Symbol
V
OUT
I
OUT
Item
Output Voltage
Output Current
Conditions
V
IN
=Set
V
OUT
+1V
I
OUT
=100mA
Refer to the specification Table
Note1
Min.
×0.980
1
Typ.
Max.
×1.020
Unit
V
A
∆V
OUT
/∆I
OUT
Load Regulation
V
DIF
I
SS
Istandby
I
EXTleak
∆V
OUT
/∆V
IN
V
IN
Ilim
I
RPT
∆V
OUT
/
∆Topt
V
CEH
V
CEL
Dropout Voltage
Supply Current
Supply Current (Standby)
EXT Leakage Current
Line Regulation
Input Voltage
Current Limit
Short Current Limit
Output Voltage
Temperature Coefficient
CE Input Voltage "H"
CE Input Voltage "L"
V
IN
=Set
V
OUT
+1V
1mA
<
I
OUT
<
100mA
=
=
I
OUT
=300mA
V
IN
=Set
V
OUT
+1V,
I
OUT
=0mA
V
IN
=18V,CE=0V
Set V
OUT
+0.5V
I
OUT
=100mA
<
=
Refer to the specification table by
output voltage
10
0.1
24
1.0
0.1
µA
µA
µA
%/V
V
mA
µA
ppm
/°C
V
IN
0.5
µA
V
V
IN
<
=
18.0V
0.01
0.10
18
Refer to the specification Table
Base Current I
B
of PNP Tr.
Base Current I
B
of PNP Tr.
V
OUT
=0V
I
OUT
=100mA
−40°C
<
Topt
=
<
=
10
600
±50
2.0
0.0
25
105°C
Note1: This item depends on the capability of external PNP transistor.
Use low saturation type transistor with h
FE
value range of 100 to 300.
4
Embedded System
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