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R1540 Series
High Noise Immunity 42 V Input Voltage 70 mA Voltage Tracker

FEATURES AND BENEFITS

FEATURES AND BENEFITS

Download now to view the summary of Features and Benefits of this product.


Product Specifications

The R1540 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.

This regulator can be used under high temperature environment. It offers the maximum operating temperature of 105°C for consumer applications, and 125°C for industrial and automotive applications.

  • Excellent noise resistance 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.

FEATURES

  Consumer Industrial Automotive
Input Voltage Range (Maximum Rating) 3.5 V to 42 V (50 V)
Operating Temperature Range -40°C to 105°C -40°C to 125°C
Supply Current Typ. 60 µA
Standby Current Typ. 0.1 µA
Dropout Voltage Typ. 1.3 V (IOUT = 70 mA)
Output Voltage Range 2.2 V ~ 14 V
Output Voltage Accuracy ±15 mV (−40°C ≤ Ta ≤ 105°C, VCE/ADJ = 5 V) ±15 mV (−40°C ≤ Ta ≤ 125°C, VCE/ADJ = 5 V)
Output Current 70 mA
Protections Thermal Shutdown, Output Current
Packages SOT-23-5, HSOP-8E

APPLICATION INFORMATION

CIN: 0.1 µF, COUT: 10 µF, Ceramic capacitor

PIN DESCRIPTION

SOT-23-5

SOT-23-52.9 mm × 2.8 mm
1 CE/ADJ
2 GND*
3 VDD
4 VOUT
5 GND

*) The GND pins must be wired together on the board.

HSOP-8E

HSOP-8E5.2 mm × 6.2 mm
1 VDD
2 VDD
3 NC
4 CE/ADJ
5 GND*
6 GND*
7 NC
8 VOUT

*) The tab is substrate level (GND). It is recommended that this tab to be connected to the ground plane on the board.


R1540 Series for Consumer

APPLICATIONS

  • Off-board sensors and power supply systems for analog to digital converters (ADC)

Operating Temperature Range : -40°C to 105°C


SELECTION GUIDE

R1540x offers selectable packages corresponding to user’s purpose.

Product Name   Package Quantity per Reel
R1540N001B-TR-FE Consumer SOT-23-5 3,000
R1540S001B-E2-FE Consumer HSOP-8E 1,000

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
SOT-23-5 R1540N R1540N (-FE)
HSOP-8E R1540S R1540S (-FE)

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.


R1540 Series for Industrial

This product is a high-reliability semiconductor device for industrial application that has passed both the screening at high temperature and the reliability test with extended hours. Ricoh accommodates requests including the long-time operation and high temperature environment use.


APPLICATIONS

  • Off-board sensors and power supply systems for analog to digital converters (ADC)

Operating Temperature Range : -40°C to 125°C


Tjmax 150°C

Unlike the rating of the products for consumer applications at Tjmax = 125°C, the products for industrial applications are rated at high temperature of Tjmax = 150°C. The power dissipation is also rated at high temperature.


SELECTION GUIDE

R1540x offers selectable packages corresponding to user’s purpose.

Product Name   Package Quantity per Reel
R1540N001B-TR-YE
Industrial SOT-23-5 3,000
R1540S001B-E2-YE Industrial HSOP-8E 1,000

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Marking Reliability*2
SOT-23-5 R1540N R1540N (-YE)
HSOP-8E R1540S R1540S (-YE)

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.


R1540 Series for Automotive

Ricoh is committed to providing a semiconductor device with the highest level of quality and reliability by restricting the device manufacturing only within Ricoh and the cooperative companies successfully passed our stringent inspections for automotive products. Ricoh established a traceability system and manages manufacturing information and logistics information from the warehouse.


Quality Ranks for Applications

Ricoh offers three different quality ranks for automotive products according to their application purposes.
R1540 Series offer products in Rank 2 and Rank 3.

Rank 2: Automotive General Equipments (Body System)

  • Power source for automotive general equipments such as electric window, side mirror, and around view camera

Rank 3: Automotive Accessories

  • Power source for car accessories such as car audio equipment, car navigation system, and ETC system

Operating Temperature Range : -40°C to 125°C


Tjmax 150°C

Unlike the rating of the products for consumer applications at Tjmax = 125°C, the products for automotive applications are rated at high temperature of Tjmax = 150°C. The power dissipation is also rated at high temperature.


SELECTION GUIDE

R1540 offers selectable packa ges and quality levels correspond ing to user’s purpose.

Product Name   Package Quantity per Reel
R1540N001B-TR-KE AutomotiveAutomotive General Equipments SOT-23-5 3,000
R1540N001B-TR-AE AutomotiveAutomotive Accessories
R1540S001B-E2-KE AutomotiveAutomotive General Equipments HSOP-8E 1,000
R1540S001B-E2-AE AutomotiveAutomotive Accessories

DOCUMENT/CONTACT

Sample Online

  • Mouser

Purchase

Technical Support

Package*1 Marking Reliability*2
SOT-23-5 R1540N R1540N (-KE) *3
R1540N (-AE)
HSOP-8E R1540S R1540S (-KE) *3
R1540S (-AE)

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.
*3: The reliability information is not listed for devices above rank2. Please contact Ricoh sales representatives for further informations.

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