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R1294 Series

Triple Output DC/DC Converter for LCD/CCD

  • Consumer
  • Industrial
  • Automotive
  • PLP
  • RoHS

The R1294 Series are triple output CMOS-based step-up/inverting DCDC converters.

R1294 consists of the inductor type PWM step-up DC/DC converter (DC/DC1) with an internal 2A Nch. driver and charge pump type positive/negative DCDC converters (DC/DC2, DC/DC3). Triple output start-up sequence can be set by external capacitors.

R1294 is ideally suitable for use in power source for equipment that requires sequence control such as LCD and CCD.

This product for industrial applications are characterized to -50°C, and operates in a wide temperature range from low temperature to high temperature.

Specs & Datasheets

  Consumer Industrial Automotive
Input Voltage Range 2.0 V to 5.5 V (6.5 V)
Operating Temperature Range -40°C to 95°C (125°C) -40°C to 105°C (150°C) -40°C to 105°C (150°C)
Supply Current Typ. 3.5 mA
Standby Current Typ. 0.1 µA
Output Voltage Range Boost DC/DC: Max. 20 V (Externally Adjustable)
Feedback Voltage 1.0 V
Feedback Voltage Accuracy ±15 mV
Feedback Voltage Temperature Coefficient Typ. ±150 ppm/°C
Driver ON-resistance Typ. 150 mΩ
Oscillator Frequency Typ. 210 kHz to 1.4 MHz (Externally Adjustable)
Maximum Duty Cycle Externally Adjustable
Package QFN0404-24B
Charge-pump Output Voltage Adjustable with external resistors
Charge-pump Temperature Coefficient VREF: Typ. ±150 ppm/°C
CPPFB: Typ.±150 ppm/°C
Charge-pump Oscillator Frequency 1/4 of the main step-up DC/DC converter oscillator frequency

Download Datasheet

Protections / Functions

Functional Description

TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust
                   

Technical Documents

Typical Application

Typical Application

For external parts, please refer to the datasheet.

Quality & Packages

Product Name Compatibility Package Marking Reliability
R1294L10xA-E2
  • gradeConsumerC
  • plpP
QFN0404-24B R1294L R1294L
R1294L10xA-E2-Y
  • gradeIndustrialI
  • plpP
QFN0404-24B R1294L R1294L-Y
R1294L10xA-E2-J
  • gradeAutomotiveA
  • plpP
QFN0404-24B R1294L R1294L-J
R1294L10xA-E2-A
  • gradeAutomotiveA
  • plpP
QFN0404-24B R1294L R1294L-A

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

Sample / Buy

Functional Description

TSD Thermal Shutdown Function
ILX LX Current Limit Function
OCP Overcurrent Protection
OVP Overvoltage Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Reverse Reverse Current Protection Circuit
Shutdown Shutdown Function
Soft Start Soft Start Function
SSCG Spread Spectrum Clock Generator Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Function
Anti-ringing Anti-ringing Switch Function
Sequencing Start-up Sequencing Control
Max Duty Maximum Duty Cycle
Ext. Phase Externally Adjustable Phase Compensation
LED Adjust LED High-speed Dimming Control

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Boost
VIN
min (V)
2.0
VIN
max (V)
5.5
VOUT
max (V)
20
ISS
(µA)
3500