RP115x Series
Low On Resistance/ Low Voltage 1 Ch 500 mA/ 1.0 A Alternative LDO
NO. EA-274-170324
OUTLINE
The RP115x is a CMOS-based positive voltage regulator featuring 500 mA/ 1.0 A that provides high ripple
rejection, low dropout voltage, high output voltage accuracy, and low supply current. Internally, it consists of a
voltage reference unit, an error amplifier, a resistor-net for output voltage setting, a current limit circuit, a
thermal shutdown circuit, and a reverse current protection circuit. The RP115x uses a CMOS process for
achieving low supply current, low On Resistance for low dropout voltage (Typ. 0.195 V (DFN1216-8, I
OUT
= 1.0
A, V
SET
= 1.2 V)) and CE function for long battery life. Excellent ripple rejection, input transient response, and
load transient response make the RP115x ideal for the power sources of mobile communication equipment.
The RP115x is available in the DFN1216-8 package for space saving and the SOT-89-5 (Output Current: 1.0
A fixed) package for higher power applications. The RP115L (DFN1216-8) can choose the output current limit
between 1.0 A or 500 mA by alternating the LCON pin between “H” or “L”. The RP115H (SOT-89-5) can output
only 1.0 A since it does not include the LCON pin.
FEATURES
•
Supply Current ·········································· Typ. 110 μA
•
Supply Current (Standby Mode) ···················· Typ. 0.5 μA
•
Dropout Voltage ········································· Typ. 0.195 V (DFN1216-8: I
OUT
= 1.0 A, V
SET
= 1.2 V)
•
•
•
•
•
•
•
•
•
•
•
•
•
(1)
Typ. 0.235 V (SOT-89-5: I
OUT
= 1.0 A, V
SET
= 1.2 V)
Ripple Rejection ········································· Typ. 80 dB (f = 1 kHz, V
SET
≤ 1.8 V)
Typ. 75 dB (f = 1 kHz, V
SET
> 1.8 V)
Output Voltage Accuracy ······························
±1.0%
(V
SET
≥ 1.75 V)
Output Voltage Temperature Coefficient ·········· Typ.
±30
ppm/ ºC (V
SET
≥ 1.75 V)
Line Regulation ·········································· Typ. 0.02%/V
Package ··················································· DFN1216-8, SOT-89-5
Output Voltage Range ································· 0.7 V to 4.3 V with a 0.1-V step
(1)
Built-in Short Current Limit Circuit ·················· Typ. 60 mA (DFN1216-8: LCON = "L")
Built-in Peak Current Limit
Built-in Thermal Shutdown Circuit ·················· Thermal Shutdown Temperature: 165ºC
Built-in Constant Slope Circuit for Start-up
Built-in Inrush Current Suppression Circuit ······· Typ. 300 mA (DFN1216-8: LCON = "L")
Reverse Current Protection
Recommended Ceramic Capacitors ··············· 1.0 µF or more
For the output voltage with a 0.05-V step, refer to
SELECTION GUIDE.
1
RP115x
NO. EA-274-170324
APPLICATIONS
•
Portable Communication Equipment
•
Electrical Appliances such as Cameras, VCRs and Camcorders
•
Battery-powered Equipment
•
Home Appliances, Printers, Scanners, Office Equipment Machines
SELECTION GUIDE
The package type, the set output voltage and the auto-discharge
(1)
are user-selectable options.
Selection Guide
Product Name
RP115Lxx1∗-E2
RP115Hxx1∗-T1-FE
Package
DFN1216-8
SOT-89-5
Quantity per Reel
5,000 pcs
1,000 pcs
Pb Free
Yes
Yes
Halogen Free
Yes
Yes
xx: Specify the set output voltage (V
SET
) within the range of 0.7 V to 4.3 V with a 0.1 V step.
Specify V
SET
with a 0.05 V step as follows:
0.75 V: RP115x071∗5
1.15 V: RP115x111∗5
1.25 V: RP115x121∗5
1.35 V: RP115x131∗5
1.75 V: RP115x171∗5
1.85 V: RP115x181∗5
2.15 V: RP115x211∗5
2.75 V: RP115x271∗5
2.85 V: RP115x281∗5
2.95 V: RP115x291∗5
∗:
Specify the CE pin polarity and the auto-discharge.
B: CE = Active-high, auto-discharge not included
D: CE = Active-high, auto-discharge included
Auto-discharge function quickly lowers the output voltage to 0 V by releasing the electrical charge in the external
capacitor when the chip enable signal is switched from the active mode to the standby mode.
(1)
2
RP115x
NO. EA-274-170324
BLOCK DIAGRAMS
VDD
VOUT
VDD
VOUT
-
Vref
VFB
Vref
-
+
Current Limit
Thermal Shutdown
Reverce
Detector
VFB
+
Current Limit
Thermal Shutdown
Reverce
Detector
CE
GND
CE
GND
LCON
LCON
RP115Lxx1B Block Diagram
RP115Lxx1D Block Diagram
VDD
VOUT
VDD
VOUT
-
Vref
VFB
Vref
-
+
Current Limit
Thermal Shutdown
Reverce
Detector
VFB
+
Current Limit
Thermal Shutdown
Reverce
Detector
CE
GND
CE
GND
RP115Hxx1B
(1)
Block Diagram
RP115Hxx1D Block Diagram
(1)
The
RP115H does not have the LCON pin, so the output current limit is fixed at 1 A.
3
RP115x
NO. EA-274-170324
PIN DESCRIPTION
Top View
8
7
6
5
Bottom View
5
6
7
8
5
4
∗
1
2
3
4
4
3
2
1
1
2
3
DFN1216-8 Pin Configuration
RP115L: DFN1216-8
Pin No
1
2
3
4
5
6
7
8
Symbol
VOUT
(1)
VOUT
(1)
LCON
VFB
(1)
GND
CE
VDD
(2)
VDD
(2)
Output Pin
Output Pin
SOT-89-5 Pin Configuration
Pin Description
Output Current Limit Alternate Pin
Feedback Pin
Ground Pin
Chip Enable Pin
Input Pin
Input Pin
* The tab on the bottom of the package shown by blue circle is a substrate potential (GND). It is recommended that this
tab be connected to the ground plane on the board but it is possible to leave the tab floating.
RP115H
( 3)
: SOT-89-5
Pin No
1
2
3
4
5
Symbol
VFB
(1)
GND
CE
VDD
VOUT
(1)
Feedback Pin
Ground Pin
Chip Enable Pin
Input Pin
Output Pin
Pin Description
(1)
(2)
The VOUT pin and the VFB pin must be wired together when mounting on the board.
The VDD pins must be wired together when mounting on the board.
(3)
The output current limit is fixed at 1 A.
4
RP115x
NO. EA-274-170324
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings
Symbol
V
IN
V
CE
V
LCON
V
OUT
P
D
Tj
Tstg
Input Voltage
Input Voltage (CE Pin)
Input Voltage (LCON Pin)
Output Voltage
Power Dissipation
(1)
(Standard Land Pattern)
Junction Temperature Range
Storage Temperature Range
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.
Item
Rating
6.0
−0.3 to 6.0
−0.3 to 6.0
−0.3 to 6.0
DFN1216-8
SOT-89-5
−40 to 125
−55 to 125
625
900
Unit
V
V
V
V
mW
°C
°C
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Symbol
Item
V
IN
Ta
Input Voltage
(2)
Operating Temperature Range
Rating
1.4 to 5.25
−40 to 85
Unit
V
°C
RECOMMENDED OPERATING CONDITIONS
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.
(1)
Refer
(2)
to
POWER DISSIPATION
for detailed information.
In case of operating the device beyond 5.25 V, do not exceed 5.5 V with 500 total operating hours.
5
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