Current LDO. R1518x Datasheet

R1518x LDO. Datasheet pdf. Equivalent


Part R1518x
Description 1A 36V Input Low Supply Current LDO
Feature R1518x Series AEC-Q100 Grade 1 Compliant 1 A 36V Input Low Supply Current LDO for Automotive Appli.
Manufacture RICOH
Datasheet
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R1518x Series AEC-Q100 Grade 1 Compliant 1 A 36V Input Low R1518x Datasheet
Recommendation Recommendation Datasheet R1518x Datasheet




R1518x
R1518x Series
AEC-Q100 Grade 1 Compliant
1 A 36V Input Low Supply Current LDO for Automotive Applications
OUTLINE
NO.EC-329-141222
R1518x is a CMOS-based LDO that specifically designed for automotive applications featuring 1 A output
current and 36 V input voltage. In addition to a conventional regulator circuit, R1518x consists of a constant
slope circuit as a soft-start function, a fold-back protection circuit, a short current limit circuit, and a thermal
shutdown circuit. Besides the low supply current by CMOS, the operating temperature is 40°C to 125°C and
the maximum input voltage is 36 V, the R1518x is very suitable for power source of car accessories.
R1518x is available in R1518xxxxB/D/E/F with the internally fixed output voltage, and R1518xxxxD/F with the
auto-discharge function at standby.
R1518J001C can adjust the output voltage with an external resistor. R1518xxxxB/C/D internally fixes the soft-
start time at 120 µs (Typ). R1518Jxx1E/F can adjust the soft-start time with an external capacitor.
R1518x is available in two packages for ultra high wattage: HSOP-6J and TO-252-5-P2.
FEATURES
Input Voltage Range (Maximum Rating) ·············· 3.5 V to 36.0 V (50.0V)
Operating Temperature range ··························· 40°C to 125°C
Supply Current··············································· Typ. 18 µA
Standby Current············································· Typ. 0.1 µA
Dropout Voltage ············································· Typ. 0.7 V (IOUT = 1 A, VOUT = 5.0 V)
Output Voltage Accuracy ·································· ±0.8% (VOUT 5.0 V)
Temperature-Drift Coefficient of Output Voltage····· Typ. ±60 ppm/°C (40°C Ta 125°C)
Line Regulation·············································· Typ. 0.01%/V
Packages ····················································· HSOP-6J, TO-252-5-P2
Output Voltage Range ····································· R1518xxxxB/D/E/F: 2.5 V/2.8 V/3.0 V/3.3 V/3.4 V/5.0 V/
6.0 V/8.0 V/8.5 V/9.0 V
*Contact Ricoh sales representatives for other voltages.
R1518J001C: Adjustable from 2.5 V to 12.0 V
with external resistor
Feedback Voltage: 2.5 V
Built-in Short Current Limit Circuit ······················ Typ. 150 mA
Built-in Fold-Back Protection Circuit···················· Min. 1.1 A
Built-in Thermal Shutdown Circuit ······················ Typ. 160°C
Built-in Soft-start Circuit ··································· R1518xxxxB/C/D: Typ.120 µs
R1518Jxx1E/F: Time adjustable
Ceramic Capacitors can be used ······················· R1518xxxxB/D/E/F: 0.1 µF or more
R1518J001C: 1.0 µF or more
1



R1518x
R1518x
NO.EC-329-141222
APPLICATIONS
Power source for car accessories including car audio equipment, car navigation system, and ETC system.
Power source for control units including EV inverter and charge control.
BLOCK DIAGRAMS
R1518xxxxB
VDD
CE
Internal VR
Soft
Start
Vref
Current Limit
Thermal Shutdown
VOUT
GND
R1518J001C
VDD
CE
Internal VR
Soft
Start
Vref
Current Limit
Thermal Shutdown
VOUT
VFB
GND
VDD
CE
R1518xxxxD
Internal VR
Soft
Start
Vref
Current Limit
Thermal Shutdown
VDD
DELAY
CE
R1518Jxx1F
Internal VR
Soft
Start
Vref
Current Limit
Thermal Shutdown
VOUT
GND
R1518Jxx1E
VDD
DELAY
CE
Internal VR
Soft
Start
Vref
Current Limit
Thermal Shutdown
VOUT
GND
VOUT
GND
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