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 resist-ornet for output voltage setting, a current limit circuit, a
thermal shutdown circuit, and a reverse current protection circui Tt.he RP115x uses a CMOS process for
achieving low supply current, low On Resistance for low dropout voltage (Typ. 0.195 V (DFN1216-8, I = 1.0
OUT
A, VSET = 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 A
Supply Current (Standby Mode) Typ. 0.5 A
Dropout Voltage Typ. 0.195 V (DFN1216-8: I = 1.0 A, V = 1.2 V)
OUT SET
Typ. 0.235 V (SOT-89-5: IOUT = 1.0 A, VSET = 1.2 V)
Ripple Rejection Typ. 80 dB (f = 1 kHz, V 1.8 V)
SET
Typ. 75 dB (f = 1 kHz, V > 1.8 V)
SET
Output Voltage Accuracy 1.0% (VSET 1.75 V)
Output Voltage Temperature Coefficient Typ. 30 ppm/ C (V 1.75 V)
SET
Line Regulation Typ. 0.02%/V
Package DFN1216-8, SOT-89-5
(1)
Output Voltage Range 0.7 V to 4.3 V with a 0.1-V step
Built-in Short Current Limit Circuit Typ. 60 mA (DFN1216-8: LCON =)
Built-in Peak Current Limit
Built-in Thermal Shutdown Circuit Thermal Shutdown Temperature: 165C
Built-in Constant Slope Circuit for Start-up
Built-in Inrush Current Suppression Circuit Typ. 300 mA (DFN1216-8: LCON =)
Reverse Current Protection
Recommended Ceramic Capacitors 1.0 F or more
(1)
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
(1)
The package type, the set output voltage and the auto-discharge are user-selectable options.
Selection Guide
Product Name Package Quantity per Reel Pb Free Halogen Free
RP115Lxx1-E2 DFN1216-8 5,000 pcs Yes Yes
RP115Hxx1-T1-FE SOT-89-5 1,000 pcs Yes Yes
xx: Specify the set output voltage (V ) within the range of 0.7 V to 4.3 V with a 0.1 V step.
SET
Specify V with a 0.05 V step as follows:
SET
0.75 V: RP115x0715
1.15 V: RP115x1115
1.25 V: RP115x1215
1.35 V: RP115x1315
1.75 V: RP115x1715
1.85 V: RP115x1815
2.15 V: RP115x2115
2.75 V: RP115x2715
2.85 V: RP115x2815
2.95 V: RP115x2915
: Specify the CE pin polarity and the auto-discharge.
B: CE = Active-high, auto-discharge not included
D: CE = Active-high, auto-discharge included
(1)
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.
2