Document
R1540x Series
High Noise Immunity 42 V Input Voltage 70 mA Voltage Tracker for Automotive Applications
NO.EC-513-190411
OVERVIEW
The R1540x is a voltage tracker featuring input voltage in the range of 3.5 V to 42 V. Highly accurate output voltage which attributes to CE/ADJ pin achieves successful sequence control of the integrated off-board sensor module. Strong enough not to require the circuit to avoid external electromagnetic interference (EMI) and this contributes space saving.
KEY BENEFITS
Excellent noise immunity provides effective shielding against EMI. Lower stand-by current consumption leads to energy saving of the whole system to prolong battery life. Response to requirements for sequence control in the system with integrated sensors.
KEY SPECIFICATIONS
Input Voltage Range (Maximum Rating):
3.5 V to 42.0 V (50.0 V)
Supply Current: Typ. 60 µA Standby Current: Typ. 0.1 μA Tracking Voltage Range: 2.2 V to 14 V Tracking Voltage Accuracy: ± 15 mV
(−40°C ≤ Ta ≤ 125°C, VCE/ADJ = 5 V)
Output Current 70 mA Ripple Rejection: Typ. 80 dB (f = 100 Hz) Protections: Thermal Shutdown, Output Current
Limiting and Short-circuit Current Limiting
PACKAGE
SOT-23-5 2.9 x 2.8 x 1.1 (mm)
HSOP-8E 5.2 x 6.2 x 1.45 (mm)
TYPICAL APPLICATION
VIN
VDD
VOUT
Sensor
VDD
VDD VOUT
LDO
GND
MPU
VDD VREF
GND
CIN R1540x
CE/ADJ CCE/ADJ
GND
COUT
SELECTION GUIDE
Product Name
R1540N001B-TR-#E R1540S001B-E2-#E
CIN: 0.1uF, COUT: 10µF, CCE/ADJ: 0.1uF, Ceramic capacitor
Package SOT-23-5 HSOP-8E
Quantity per Reel 3,000 pcs 1,000 pcs
APPLICATIONS
Off-board sensors for automotive applications and power supply systems for analog to digital
converters (ADC)
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R1540x
NO.EC-513-190411
SELECTION GUIDE
R1540x offers selectable packages and quality levels corresponding to user’s purpose.
Selection Guide Product Name
R1540N001B-TR-#E R1540S001B-E2-#E
Package
SOT-23-5 HSOP-8E
Quantity per Reel
3,000 pcs
1,000 pcs
Pb Free
Yes Yes
Halogen Free
Yes Yes
#: Quality Class # Operating Temp. Range A −40°C to 125°C K −40°C to 125°C
Test Temp. 25°C, High Low, 25°C, High
BLOCK DIAGRAM
VDD
Thermal Shutdown Circuit
VOUT
CE/ ADJ
Short Protection
Current Limit
GND
R1540x001B Block Diagram
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PIN DESCRIPTIONS
54
(mark side)
R1540x
NO.EC-513-190411
Top View 8765
Bottom View 5678
*( 1 )
123 R1540N (SOT-23-5) Pin Configuration
1234
4321
R1540S (HSOP-8E) Pin Configuration1
R1540N Pin Descriptions
Pin No.
Symbol
1 CE/ADJ
2 GND(2)
3 VDD
4 VOUT
5 GND(2)
Description Chip Enable and Adjustment Pin (Active - High) Ground Pin Input Pin Output Pin Ground Pin
R1540S Pin Descriptions
Pin No.
Symbol
1 VDD
2 VDD
3 NC
4 CE/ADJ
5 GND(2)
6 GND(2)
7 NC
8 VOUT
Description Input Pin Input Pin No Contact Chip Enable and Adjustment Pin (Active - High) Ground Pin Ground Pin No Contact Output Pin
(1) The tab on the bottom of the package is substrate potential (GND). It is recommended that this tab to be connected to the ground plane on the board.
(2) The GND pins must be wired together on the board.
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INTERNAL EQUIVALENT CIRCUIT FOR EACH PIN
Driver
VOUT
+ -
CE/ADJ
R1540x
NO.EC-513-190411
+ -
VOUT Pin Internal Equivalent Circuit Diagrams CE/ADJ Pin Internal Equivalent Circuit Diagrams
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ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
VCE/ADJ VOUT IOUT
PD
Tj Tstg
Parameter Input Voltage Peak Voltage (1) CE/ADJ Pin Input Voltage VOUT Pin Output Voltage Output Current Power Dissipation (2) JEDEC STD. 51 Junction Temperature Range Storage Temperature Range
SOT-23-5 HSOP-8E
R1540x
NO.EC-513-190411
Rating −0.3 to 50
60 −0.3 to 50 −0.3 to VIN + 0.3 ≤ 50
95 830 3600 −40 to 150 −55 to 150
Unit V V V V mA
mW
°C °C
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause permanent damage 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 are not assured.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VIN Input Voltage
VCE/ADJ
CE/ADJ Input Pin Voltage
Ta Operating Temperature Range
Rating 3.5 to 42 0 to 14 −40 to 125
Unit V V °C
RECOMMENDED OPERATING CONDITONS
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 they are used over such ratings 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) Duration time: 200 ms. (2) Refer to POWER DISSIPIATION for detailed information
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R1540x
NO.EC-513-190411
ELECTRICAL CHARACTERISTICS
CIN = 0.1 μF, COUT = 10 μF, VCE/ADJ = 5.0 V and VIN = 14.0 V, unless otherwise noted.
The specifications surrounded by
are guaranteed.