800mA LDO REGULATOR
R1170x SERIES
OUTLINE
NO. EA-084-0502
The R1170x Series are positive voltage regulator ICs by CMOS process. The R1170x Series have features of
high ripple rejection, low dropout voltage, high output voltage accuracy, low consumption current. Each of these
ICs consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit
circuit at short mode, a chip enable circuit, and thermal-shunt circuit. Output Voltage of R1170 is fixed in the IC.
Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make
low dropout voltage and chip enable function prolong the battery life. These regulators are remarkable
improvement on the current regulators in terms of ripple rejection, input transient response, and load transient
response.
Maximum Output Current is large for its compact size.
Thus, the R1170x Series are suitable for various power sources for portable appliances.
Since the packages for these ICs are the SOT-89-5 package, HSON-6,or HSOP-6J, high density mounting of
the ICs on boards is possible.
FEATURES
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Ultra-Low Supply Current............................................. Typ. 80µA
Low Standby Current ................................................... Typ. 0.1µA
Output Current ............................................................. Min. 800mA (V
IN
=V
OUT
+1.0V)
Output Voltage ............................................................. Stepwise setting with a step of 0.1V in the range of
1.5V to 5.0V
High Output Voltage Accuracy .....................................
±2.0%
Low Dropout Voltage.................................................... Typ. 0.12V (V
OUT
=3.0V,
I
OUT
=300mA)
Line Regulation ............................................................ Typ. 0.05%/V
Small Package ............................................................. SOT-89-5, HSON-6,HSOP-6J
Built-in Current Limit Circuit
Built-in Thermal Shunt Circuit
Low Temperature-drift Coefficient of Output Voltage ... Typ.±100ppm/°C
APPLICATIONS
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Local Power source for Notebook PC.
Local Power source for portable appliances, cameras, and videos.
Local Power source for equipment of battery-use.
Local Power source for home appliances.
1
R1170x
BLOCK DIAGRAMS
R1170H Series
V
DD
4
-
+
Vref
Current Limit
CE 1
2 GND
CE 3
Vref
Current Limit
4 GND
5 V
OUT
V
DD
6
V
DD
5
-
+
R1170D Series
1 V
OUT
2 V
OUT
R1170S Series
V
DD
6
NC
4
1
2
V
OUT
GND
Vref
Current Limit
CE
3
5
GND
SELECTION GUIDE
The output voltage, the chip-enable polarity, the taping type can be selected at the user's request.
The selection can be made with the part number as follows;
R1170xxx1x-xx
←Part
Number
↑↑
ab
Code
a
b
c
↑↑
cd
Contents
Package Type; H: SOT-89-5, D: HSON-6, S:HSOP-6J
Designation of Output Voltage (V
OUT
)
Stepwise setting with 0.1V increment in the range from 1.5V to 5.0V
Designation of option;
A: Built-in Chip Enable Circuit, Active at "L"
B: Built-in Chip Enable Circuit, Active at "H"
Designation of Taping Type;
T1 or T2 (SOT-89-5), TR (HSON-6), E2 (HSOP-6J)
(Refer to Taping Specifications)
d
2
Microcontroller MCU
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