Copyright © Richtek Technology 2015 1 Richtek Wide Input Voltage Range DC/DC Power Solutions for Industrial, Automotive and LED lighting applications R ichtek provides comprehensive power conversion solutions for input voltages ranging from 1.4V up to 80V, suitable for a wide range of applications in the industrial, automotive, and professional lighting field. The selected product range in this brochure highlights Richtek linear and switching converters, from low quiescent LDOs to highly efficient step-up and step down converters and controllers, LED lighting drivers, Power Switches and DDR terminators. →→ Many parts come with extra features such as PGOOD signaling and programmable Soft-Start. →→ Richtek Buck converters use robust control architectures like ACOT™ which is compensation free and simple to use. →→ The listed parts have thermally enhanced packages, allowing higher ambient temperature operation. Communications Professional LED Lighting →→ Infotainment →→ Networking →→ Car lighting →→ Embedded Computing →→ USB Power →→ Servers →→ Street Lighting →→ Data storage →→ Display lighting →→ Industrial control systems →→ All parts can be used with ceramic input and output capacitors which extends operation life time. →→ Instrumentation These features make the Richtek parts extremely suitable for demanding applications fields such as: →→ Surveillance Cameras SG001-01 NOV 2015 Automotive →→ eMetering →→ Richtek also offers both 3T parts (qualified over the full -40°C ~ 85°C industrial temperature range) and Automotive AEC-Q100 qualified parts. 2 Industrial →→ Portable equipment Copyright © Richtek Technology 2015 →→ Lighting controls 3 Power conversion IC Portfolio for Industrial, Automotive and LED lighting applications Step down converters and LDOs P/N Description IOUT VIN VOUT fsw RT2657BQ Synchronous 0.6A 2.7V~5.5V 0.6V~5.5V 2.25MHz 2A 2.7V~5.5V 0.6V~3.4V 1MHz Buck converter RT5712A Key features →→ AEC-Q100 Compliance →→ Built-in Soft-Start →→ 1.5A Current limit peak →→ RON 100mΩ HS / 70mΩ LS →→ 1.2ms fixed Soft-Start →→ CMCOT topology: good transient Package WDFN-8L 3x3 WDFN-6L-2x2 response, stable with MLCC RT8079 3A 2.95V~6V VREF: 0.827V 300kHz-2MHz RT8086B 3.5A 2.8V~5.5V 0.6V~3.3V 1.2MHz →→ Hiccup or Latch off UVP →→ RON 45mΩ HS / 45mΩ LS →→ Power Good →→ Adjustable Soft-Start →→ RON 50mΩ HS / 40mΩ LS →→ CMCOT topology: good transient response, stable with MLCC RT8074 0.8V~5V 200kHz-2MHz Up to 4A IOUT →→ Power Good →→ Built-in Soft-Start →→ Hiccup UVP →→ Built-in Soft-Start PSOP-8 Key features Package Description IOUT VIN VOUT fsw LDO 1A 2.2V~6V 1.2V~VIN 200mV@1A →→ AEC-Q100 Compliance →→ Low Quiescent 1.5µA in Shutdown Mode 1A 2.2V~6V 1.2V~VIN 150mA@1A →→ 3T Grade →→ Low Quiescent 0.1µA in Shutdown Mode VDFN-8AL-3x3 1A 1.4V~6V 0.5V~VIN 200mV@1A →→ 3T Grade →→ EN control WDFN-8L-3x3 2A 1.4V~6V 0.5V~VIN 400mV@2A →→ 3T Grade →→ EN control PSOP-8 RT2515H LDO with EN Copyright © Richtek Technology 2015 LDO Buck Converters UQFN-12L-2x2 (FC) RT2517B RT2518 SG001-01 NOV 2015 2.7V~5.5V WQFN-16L-3x3 P/N RT2517C 4 4A 1.4V~6V VIN PSOP-8 1.4V~6V VIN, up to 4A, Buck converters / LDOs, ideal for Li- ion battery powered applications, 5V input power rails and intermediate power conversions. 5 4V~18V VIN P/N Description IOUT VIN VOUT fsw RT8297B Current Mode Synchronous Buck converter 1.5A 4V~17V 0.8V~12V 800kHz ACOT™ Synchronous 2A/3A RT6232/33/A/B A:PSM Buck Converters B:PWM RT7275/76 Buck converter 4.5V~18V 0.765V~8V 500kHz 3A 700kHz 75:PWM Key features →→ Power Good →→ ACOT™ topology for ultra-fast transient response and MLCC Cout stable →→ Adjustable Soft-Start →→ Power Good →→ Force PWM or PSM (enhanced light load efficiency) 76:PSM RT7231/32 4A 650kHz RT2855A/B 650kHz conversions, etc. 6 VOUT fsw 4.5V~21V 0.808V~15V 500kHz WDFN-8L-2x3 WDFN-10L-3x3 PTSSOP-14 ACOT™ Synchronous Buck converter 3A 4.5V~18V 0.765V~7V 650kHz RT6220 6A 3V~24V 4.5V~23V 0.8V~15V 0.6V~5V 500KHz 500kHz Current Mode Synchronous Buck converter →→ 3T Grade →→ ACOT™ topology for ultra-fast transient ACOT™ Synchronous 8A Buck converter with 3.3V/5V LDO 8V~23V 0.9V~5V Adj. 500kHz 3.35V fixed 5.5V fixed Package PSOP-8 WDFN-10L-3x3 →→ ACOT™ topology for ultra-fast transient UQFN-16L3x3(FC) response and MLCC COUT stable →→ ACOT™ topology for ultra-fast transient response and MLCC COUT stable →→ RON 27mΩ HS / 10mΩ LS →→ With fixed 70mA 3.3V/5V LDO 3V~24V VIN WDFN-14L-4x3 →→ Power Good →→ RON 31mΩ HS / 20mΩ LS →→ Power Good Buck converter WDFN-10L-3x3 from 300kHz~2MHz →→ Adjustable Soft-Start →→ Low LS RON ideal for low VOUT 3A ACOT™ Synchronous Key features →→ Synchronized external clock PSOP-8 Buck Converters UQFN-10L3x3(FC) up to 8A IOUT WDFN-16L-3x3 response and MLCC Cout stable 4A 650kHz B:PWM RT2856 RT8299 PSOP-8 A:PSM rails, intermediate power VIN 2A/3A/4A RT7238 5.5A PSM B:PWM powered from 5V~12V power IOUT Current Mode Synchronous Buck converter PTSSOP-14 RT6206B A:PSM converters, ideal for applications Description RT7262/63/64 32:PSM RT2859A/B 4V~18V VIN, up to 6A Buck P/N WDFN-8L-2x2 WDFN-10L-3x3 31:PWM 1.5A~6A IOUT Package 6A 4.5V~18V VREF: 0.8V 200kHz1.6MHz →→ Adjustable Soft-Start →→ Power Good →→ Hiccup or Latch off UVP →→ 3T Grade →→ RON 26mΩ HS / 19mΩ LS →→ Adjustable Soft-Start →→ Power Good →→ VREF: 0.8V ±1% over -40° ~ 85° WDFN-16L-3x3 WQFN-14AL3.5x3.5 3V~24V VIN, up to 8A Buck Also see: converters, ideal for applications Application note: Buck converter selection criteria SG001-01 NOV 2015 Copyright © Richtek Technology 2015 Application note: powered from 12V system power Current mode, CMCOT™ and ACOT™ de-rating. Comparing Buck converter topologies– rails requiring extra input voltage 7 3.5V~36V VIN P/N Description IOUT VIN VOUT fsw RT6208 Buck converter 4.5V~36V Adj.VOUT Hysteretic mode operation using Boundary conduction mode RT6200 LDOs/Buck Converters 0.1A VREF = 0.8V 0.6A P/N Description IOUT RT9058 LDO 4.5V~36V VIN 100mA 3.5V~36V RT2560Q 0.8V~15V ± 2% 1.2MHz VOUT fsw 2.5V,3.3V,5V,12V fixed 550mV@10mA Key features →→ Synchronous →→ Adjustable current limit →→ 25µA IQ →→ Very high efficiency at low load →→ Asynchronous with internal Package P/N Description IOUT VIN VOUT fsw SOT-23-6 RT7272A/B 3A 4.5V~36V 0.8V~30V 500kHz PSOP-8(w/PG) (PWM/PSM) Current Mode SOT-23-8(w/PG) RT2872 3A 4.5V~36V 0.8V~30V 300kHz~1MHz 3A 4.5V~36V 0.6V~24V 300kHz~2.1MHz RT8289 RT8279 5A 5.5V~36V 1.222V~26V 500kHz RT2805A 5A 5.5V~36V 1.222V~26V 500kHz Buck converter SOT-23-6 0.3Ω HS MOSFET RT2875A/B Key features Package →→ AEC-Q100 Grade (RT2560Q) →→ 2µA ultra low IQ (latch UV/hiccup UV) SOT-23-3 SOT-89 PSOP-8 0.1A~0.6A IOUT ideal for applications from 24V rails, for powering low power MCUs in e-metering, lighting controls, sensors, etc. 8 100mΩ HS MOSFET →→ Internal compensation & Soft-Start →→ 3T Grade →→ Asynchronous with integrated Package 4.5V~36V VIN PSOP-8 PSOP-8 PTSSOP-14 Buck Converters PSOP-8 PSOP-8 3A~5A IOUT 110mΩ HS MOSFET →→ Internal compensation & Soft-Start 4.5V~36V VIN, up to 5A Buck 3.5V~36V VIN, up to 0.6A Buck converters / low quiescent LDOs, Key features →→ Adjustable current limit: 2.5A~5.5A →→ Integrated 150/80mΩ HS/LS MOSFET →→ AEC-Q100 Grade 3 →→ 105/80mΩ HS/LS MOSFET →→ Ext.compensation →→ AEC-Q100 Grade 2 →→ 95/70mΩ HS/LS MOSFET →→ Ext.compensation →→ Adjustable current limit:1.5A~6A →→ Asynchronous with integrated converters, ideal for applications 36V low power buck delivering high efficiency from light load to full load conditions. from 24V power rails, such as USB supply, displays, medium Also see: Application note: 36V/3A buck converter for automotive applications. "How to power small MCU's from industrial supply rails" SG001-01 NOV 2015 Copyright © Richtek Technology 2015 power MCUs, Instrumentation, etc. 9 Step up controller for high power Boost applications 4.5V~80V VIN P/N Description IOUT VIN VOUT VDropout RT2571 LDO 4.5V~60V 2.5V,3.3V,5V Fixed 250mV@50mA 50mA 1.25-60V Adj. RT9074 100mA 4.5V~60V 2.5V,3.3V,5V Fixed 300mV@100mA →→ 30µA low IQ →→ -60V reverse protection 230mV@50mA →→ 30µA low IQ →→ -60V reverse protection 1.25-60V Adj. LDOs RT9068 230mA 4.5V~60V 2.5V,3.3V,5V fixed 1.25V~60V Adj. RT9072A/B 20mA 4.5V~80V 1.25V~60V Adj. Key features →→ 30µA low IQ →→ -60V reverse protection 180mV@20mA →→ 23µA low IQ →→ -80V reverse protection Package P/N Description IOUT VIN VOUT PSOP-8, PMSOP-8, RT8525 Boost controller 4.5V~29V Limited by MOSFET 50K-600kHz Limited by ext. MOSFET SOT-223 fsw Key features →→ Programmable Soft-Start Time →→ Programmable Boost SW Frequency PSOP-8, PMSOP-8, Package SOP-14 4.5V~29V VIN SOT-223 Boost controller PSOP-8, PMSOP-8, SOT-223 SOT-23-5, WDFN-8L 3x3 20mA~230mA IOUT IOUT limited by ext. MOSFET 4.5V~80V VIN, up to 230mA. High voltage LDOs, ideal for applications from highly 4.5V~29V VIN, Boost controller, fluctuating power rails (±60/±80V) such as automotive battery powered applications, for ideal for applications in high RT9068 high voltage LDO in fixed and adjustable versions. RT8525 Boost controller application for high output powers. powering sensors, low power 48V conversion, large display backlighting, thermal printers, MCUs, etc. 10 boost power, such as 24V to battery pack charging, etc. SG001-01 NOV 2015 Copyright © Richtek Technology 2015 11 LED Drivers Constant Current Buck converters 4.5V~150V VIN LED drivers P/N Description IOUT VIN RT8471 Hysteretic control, high brightness LED driver 1/1.2A 7V~36V RT8474/A (A:OVP for hot swap function) 50V high voltage LED driver 2A 4.5V~50V Constant Current Buck / Boost / Buck-Boost controllers Key features →→ Simple application: no COUT needed Where to use (application examples) →→ LED strips, signage, < 15W →→ MR-16 ≤ 4W Single string buck with color control via LED gating →→ Analog or digital dimming control →→ Ultra-fast response →→ Colour control for single string →→ Analog or digital dimming control →→ LED strips, signage, LED engines, POUT < 30W →→ Low RON →→ RT8474A with special open Package P/N Description IOUT VIN VLED TSOT-23-5 RT8477A Buck / Boost controller Limited by external MOSFET 4.5V~50V up to 50V RT8475 / LED Driver Controller for Buck / Boost / Buck-Boost Topologies 4.5V~36V up to 90V LED Driver controller for Buck / Boost / Buck-Boost topologies 4.5V~36V PMSOP-8 PSOP-8 PSOP-8 string protection is ideal for hot-swap LED string RT8494 RT8485 (IC VIN) (IC VIN) Key features →→ low component count →→ Analog or PWM Dimming control LED modules, down-light, emergency lighting →→ Buck ≤ 60W, Boost ≤ 40W →→ Programmable Fsw 100kHz to 1MHz →→ Industrial Display Backlight →→ Analog or Digital to Analog →→ AEC-Q100 Compliance (RT8494) Dimming control up to 150V Where to use (application examples) →→ Wide input / output range with medium power: →→ Programmable switching frequency →→ Analog, Digital or Digital to Analog Dimming control →→ Street lighting →→ High power, high LED string application →→ Buck ≤ 100W, Boost ≤ 80W Package PSOP-8 SOP-14, WQFN-16L 3x3 SOP-14 up to 2A 4.5V~150V VIN, Constant Current Buck / Boost / Buck-Boost controllers, ideal for medium 36V / 1A LED driver 50V / 2A LED driver power industrial LED lighting 50V high current Back LED driver applications. 12 SG001-01 NOV 2015 Copyright © Richtek Technology 2015 150V High power Buck LED driver 13 Others Note Power Switch and DDR termination regulator P/N Description IOUT VIN RT2528 Power Switch with adj.Ilim 0.5A~2.5A 2.5V~5.5V RT2526Q DDR Termination regulator Key features →→ AEC-Q100 Grade 3 →→ Adjustable current limit: 0.5A~2.5A Package PSOP-8 via an ext. resistance DDRII/III:2A VIN:3.1V~3.6V VLDOIN:1.2V~1.8V →→ 120mΩ P-MOSFET →→ Built-in Soft-Start →→ Low supply current:120µA →→ Reverse input-out voltage →→ 3T Grade →→ S3, S5 off modes →→ MLCC stable →→ Remote sense PSOP-8 Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries. 14 SG001-01 NOV 2015 Copyright © Richtek Technology 2015 15 16 SG001-01 NOV 2015