R1191x SERIES
300mA LDO REGULATOR with the Reverse Current Protection
NO.EA-229-111026
OUTLINE
R1191x Series are a low supply current voltage regulator with high output voltage accuracy. The maximum
operating voltage is 16V. These ICs can switch to the fast mode and the low power mode by the low power / fast
mode changer pin (ECO pin) without changing the output voltage value.
Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor-net for voltage setting, a
short current limit circuit, a thermal shutdown circuit and a chip enable circuit.
Moreover, the R1191x Series has the reverse current protection function, which protects the reverse current
flow into V
DD
pin when the output pin voltage becomes higher than the V
DD
pin voltage. Thus it is suitable for the
back-up circuit.
Since the packages for these ICs are SOT-89-5, SOT-23-5 and DFN1616-6, therefore high density mounting
of the ICs on boards is possible.
FEATURES
•
Supply Current ..................................................... Typ. 50μA (Fast Mode),
Typ. 6.0μA (Low Power Mode)
•
Standby Mode ...................................................... Typ. 0.3μA
•
Reverse Current................................................... Max. 0.1μA
•
Output Current ..................................................... Min. 300mA
•
Input Voltage Range ............................................ 3.5V to 16.0V
•
Output Voltage Range.......................................... 2.0V to 15.0V (0.1V steps)
(
For other voltages, please refer to MARK INFORMATIONS.)
•
Output Voltage Accuracy......................................
±1.5%
(Fast Mode)
±2.5%
(Low Power Mode)
•
Temperature-Drift Coefficient of Output Voltage .. Typ.
±80ppm/°C
•
Dropout Voltage ................................................... Typ. 0.55V (Fast Mode, I
OUT
=300mA
,V
OUT
=5.0V)
Typ. 0.70V (Low Power Mode, I
OUT
=300mA,V
OUT
=5.0V)
•
Ripple Rejection................................................... Typ. 60dB (f=1kHz,V
OUT
=5.0V,
Fast Mode)
•
Line Regulation .................................................... Typ. 0.02%/V (Fast Mode)
•
Packages ............................................................ DFN1616-6, SOT-23-5, SOT-89-5
•
Built-in fold-back protection circuit ....................... Typ. 50mA (Current at short mode)
•
Built-in Thermal Shutdown Circuit........................ Shutdown Temperature at 150°C
•
Ceramic capacitors are recommended to be used with this IC ····C
IN
=2.2μF
or more, C
OUT
=4.7μF
or more
APPLICATIONS
•
Power source for digital home appliances
•
Power source for audio visual equipment
1
R1191x
BLOCK DIAGRAM
R1191xxxxB
ECO
Thermal Shutdown
R1191xxxxD
ECO
Thermal Shutdown
V
DD
V
OUT
V
DD
V
OUT
Vref
Vref
Peak
Short
Current
Protection Protection
Reverse
Detector
Peak
Short
Current
Protection Protection
Reverse
Detector
CE
GND CE
GND
SELECTION GUIDE
The output voltage, auto-discharge function, and package, for the ICs can be selected at the user’s request.
Product Name
R1191Lxxx∗-TR
R1191Nxxx∗-TR-FE
R1191Hxxx∗-T1-FE
Package
DFN1616-6
SOT-23-5
SOT-89-5
Quantity per Reel
5,000 pcs
3,000 pcs
1,000 pcs
Pb Free
Yes
Yes
Yes
Halogen Free
Yes
Yes
Yes
xxx : The output voltage can be designated in the range from 2.0V(020) to 15.0V(150) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗
: The auto discharge function at off state are options as follows.
(B) without auto discharge function at off state.
(D) with auto discharge function at off state.
2
R1191x
PIN CONFIGURATIONS
•
DFN1616-6*
1
Top View
6
5
4
•
SOT-23-5
5
4
5
5
6
•
SOT-89-5
4
Bottom View
4
∗
(mark side)
1
2
3
3
2
1
1
2
3
1
2
3
PIN DISCRIPTIONS
•
DFN1616-6*
1
Pin No
Symbol
Pin Description
1
2
3
4
5
6
ECO
NC
V
DD
V
OUT
GND
CE
Low Power / Fast Mode Changer Pin ("H": Fast Mode)
No Connection
Input Pin
Output pin
Ground Pin
Chip Enable Pin ("H" Active)
∗
1) Tab is GND level. (They are connected to the reverse side of this IC.)
The tab is better to be connected to the GND, but leaving it open is also acceptable.
•
SOT-23-5
Pin No
Symbol
Pin Description
1
2
3
4
5
ECO
GND
CE
V
OUT
V
DD
Low Power / Fast Mode Changer Pin ("H": Fast Mode)
Ground Pin
Chip Enable Pin ("H" Active)
Output pin
Input Pin
•
SOT-89-5
Pin No
Symbol
Pin Description
1
2
3
4
5
V
OUT
GND
CE
ECO
V
DD
Output pin
Ground Pin
Chip Enable Pin ("H" Active)
Low Power / Fast Mode Changer Pin ("H": Fast Mode)
Input Pin
3
R1191x
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
−
0.3 to 18.0
−
0.3 to 18.0
−
0.3 to V
IN
+ 0.3
≤
18.0
−
0.3 to 18.0
Unit
V
IN
V
CE
V
ECO
V
OUT
I
OUT
P
D
Topt
Tstg
Input Voltage
Input Voltage (CE Pin)
Input Voltage (ECO Pin)
Output Voltage
Output Current
Power Dissipation (DFN1616-6)*
Power Dissipation (SOT-23-5)*
Power Dissipation (SOT-89-5)*
Operating Temperature Range
Storage Temperature Range
V
V
V
V
mA
mW
°
C
°
C
400
640
420
900
−
40 to +85
−
55 to +125
∗
) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
4
R1191x
ELECTRICAL CHARACTERISTICS
V
IN
=V
CE
=Set V
OUT
+3.0V (Max.16V), C
IN
=2.2μF, C
OUT
=4.7μF I
OUT
=1mA, unless otherwise noted.
The values in
are applicable under the condition of
−
40
°
C
≤
T
opt
≤
85
°
C.
R1191xxxxB/D
Symbol
Item
Conditions
Min.
×
0.985
×
0.970
×
0.975
×
0.960
−
1.5
Typ.
Topt
=
25°C
Max.
×
1.015
×
1.030
×
1.025
×
1.040
Unit
Fast Mode V
ECO
=V
IN
V
OUT
Output Voltage
Low Power
V
ECO
=0V
Mode
T
opt
=
25
°
C
−
40
°
C
≤
T
opt
≤
85
°
C
T
opt
=
25
°
C
−
40
°
C
≤
T
opt
≤
85
°
C
V
Δ
V
OUT
Output Voltage Deviation between Fast Mode and Low Power Mode
Output Current
Fast Mode
0
1.5
120
%
mA
mV
I
OUT
300
V
ECO
=V
IN
,
50
1mA
≤
I
OUT
≤
300mA
Δ
V
OUT
/
Load Regulation
Δ
I
OUT
Low Power V
ECO
=GND,
60
1mA
≤
I
OUT
≤
300mA
Mode
V
DIF
Dropout Voltage
Refer to the following table
I
SS1
I
SS2
Supply Current (Fast Mode) V
ECO
=V
IN
, I
OUT
=0mA
Supply Current
(Low Power Mode)
V
ECO
=GND, I
OUT
=0mA
V
IN
=16V, V
CE
=0V
(If V
OUT
< 3.0V, V
IN
=14V)
Set V
OUT
+
0.5V
≤
V
IN
≤
16V
(If Set V
OUT
< 3.0V, 3.5V
≤
V
IN
≤
14V)
f=1kHz, I
OUT
=30mA 2.0V≤V
OUT
<5.0V
Ripple 0.2V
p-p
,
5.0V≤V
OUT
<12V
V
IN
=V
ECO
=
Set V
OUT
+
1V
12V
≤
V
OUT
2.0V
≤
V
OUT
< 3.0V
3.0V
≤
V
OUT
−
40
°
C
≤
T
opt
≤
85
°
C
130
50
6
0.3
0.02
70
60
60
3.5
±
80
100
15
1.0
0.10
μ
A
μ
A
μ
A
I
standby
Supply Current (Standby)
Δ
V
OUT
/
Line Regulation
Δ
V
IN
%/V
RR
Ripple Rejection
dB
V
IN
Δ
V
OUT
/
Δ
T
opt
I
SC
V
CEH
V
CEL
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE, ECO Input Voltage "H"
CE, ECO Input Voltage "L"
Thermal Shutdown
Temperature
Thermal Shutdown
Released Temperature
Low Output Nch Tr. ON
Resistance (of D Version)
Reverse Current
14.0
16.0
V
ppm
/
°
C
mA
V
V
°
C
°
C
Ω
V
OUT
=0V
1.6
0
Junction Temperature
Junction Temperature
V
IN
=5V, V
CE
=0V, V
OUT
=0.3V
V
OUT
> 0.6V, 0V
≤
V
IN
≤
16V
50
V
IN
0.6
150
130
150
0
0.1
T
TSD
T
TSR
R
LOW
I
REV
μ
A
∗
) The values in
have been tested and guaranteed by Design Engineering.
All test categories were tested on the products under the pulse load condition (Tj≈Ta=25
°
C) except the
following test categories: ripple rejection, output voltage temperature coefficient, and thermal shutdown.
5
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