Document
R1517x Series
AEC-Q100 Grade 1 Compliant
500 mA 36V Input Low Supply Current LDO for Automotive Applications
OUTLINE
NO. EC-304-141222
R1517x is a CMOS-based LDO that specifically designed for automotive applications featuring 500 mA output
current and 36 V input voltage. In addition to a conventional regulator circuit, R1517x 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 R 1517x is ver y s uit able f or power s our c e of c ar acc es s or ies .
R1517x supports the internal fixed output voltage type of R1517xxxxB/D/E/F and the adjustable output voltage
setting type, which is controlled by external resistances, of R1517J001C. As for the soft-start time, R1517x is
fixed internal in R1517xxxxB/D/E/F and is set to 120 µs (Typ). And the soft-start time in R1517Jxx1E/F is
adjustable by external capacitors. R1517x supports the auto-discharge function at standby in R1517xxxxD/F.
R1517x 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. 0.35 V (IOUT = 500 mA, 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 ······································· 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. R1517J001C: Adjustable from 2.5 V to 12.0 V with External Resistors.
Feedback Voltage: 2.5 V Built-in Short Current Limit Circuit ························ Typ. 75 mA Built-in Fold-Back Protection Circuit······················ Min. 500 mA Built-in Thermal Shutdown Circuit ························ Typ. 160°C Built-in Soft-start Circuit ····································· Typ.120 µs
R1517Jxx1E/F: Adjustable Time Setting with External Capacitors. Usable Ceramic Capacitors ································ 0.1 µF or more
R1517J001C: 1.0 µF or more
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R1517x
NO. EC-304-141222
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
R1517xxxxB
VDD CE
Internal VR
Soft Start
Vref
Current Limit Thermal Shutdown
VOUT GND
R1517J001C
VDD CE
Internal VR
Soft Start
Vref
Current Limit Thermal Shutdown
VOUT VFB
GND
VDD CE
R1517xxxxD
Internal VR Soft Start
Vref Current Limit
Thermal Shutdown
VDD DELAY
CE
R1517Jxx1F
Internal VR Soft Start
Vref Current Limit
Thermal Shutdown
VOUT GND
R1517Jxx1E
VDD DELAY
CE
Internal VR
Soft Start
Vref
Current Limit Thermal Shutdown
VOUT GND
VOUT GND
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R1517x
NO. EC-304-141222
SELECTION GUIDE
The output voltage, version, and package type for this device can be selected at the user’s request.
Product Name R1517Sxx2-E2-#E R1517Jxx1-T1-#E
Package HSOP-6J TO-252-5-P2
Quantity per Reel 1,000 pcs 3,000 pcs
Pb Free Yes Yes
Halogen Free Yes Yes
xx: Specify the set output voltage (VSET) 2.5 V (25) / 2.8 V (28) / 3.0 V (30) / 3.3 V (33) / 3.4 V (34) / 5.0 V (50) / 6.0 V (60) / 8.0 V (80) / 8.5 V (85) / 9.0 V (90) Note: Contact Ricoh sales representatives for other voltages.
Adjustable output voltage setting type is fixed to (00) Note: R1517J001C-T1-#E only support
Specify the version with desired functions
B: No auto-discharge function C: No auto-discharge function / Adjustable output voltage setting D: Auto-discharge function E: No auto-discharge function / Adjustable soft-start time setting F: Auto-discharge function / Adjustable soft-start time setting
Note: R1517Sxx2-E2-#E can provide R1517Sxx2B/D only.
# : Specify Automotive Class Code
Operating Temperature Range
A −40°C to 125°C K −40°C to 125°C
Guaranteed Specs Temperature Range
25°C
−40°C to 125°C
Screening
High temperature High and low temperature
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.
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R1517x
NO. EC-304-141222
PIN DESCRIPTION
654
*1
1 23
HSOP-6J
12345
TO-252-5-P2
HSOP-6J Pin No. 1 2 3
4 5 6
Symbol VDD GND GND CE GND VOUT
Des.