随着LED技术和光输出的持续提升，高亮度白光及彩色光LED的应用拓展到了全新的市场领域。LED成本及性能的显著改善有助于促使LED取
www.onseml.com ORTABLE LoW-Voltage Portable LED Drivers White LED and RGB tricolor LEDs are widely used for backlighting using linear, inductive, and charge pump topologies. The inductive& small color LCD panels and keyboards, as well as indicators. High solution offers the best overall efficiency, while the charge pump brightness LEDs are used as flash light sources in cell phones and solution takes up a minimal amount of space and height due to digital cameras. These applications require optimized solutions the use of low profile ceramic capacitors as the energy transfer which can maximize battery lifetime, as well as minimize the pCb mechanism. Linear drivers are ideal for color indicator as well as area and height. ON Semiconductor has a variety of solutions simple backlighting applications 1 uF NCP5005 C1+C1-C2+C2 EN VIN VOUT 4.7uF 22 uh 1 1 uF GND CAT3648 GND <H GND ￥千 1-Wire ezDim M LED1 EN/DIM FB Programming LED2 MBRO530 20 mA RSET LED3 LED4 GND GND↓W 15g Inductive Boost Topology Charge Pump Topology VIN 工 来 Undervoltage Reference Voltage RSET Current Sotting DAC erial ENDM□ sInterface Register 4 Current Sink Regulators CAT4004A GND Linear Topology ON Semiconductor age 3 Enabling Energy Efficient Solutions Charge pump Architecture with 10 % o Higher Efficiency 10% Greater Efficiency ∽ Patented Quad-Modemw adaptive fractional charge pumps take Quad-Mode over Tri-Mode LEd driver performance to a new level by offering a 10% efficiency 133x improvement and up to 65% smaller packaging, without the need for an additional capacitor More Battery Life No Added cost Quad-Mode LEd drivers deliver the high efficiency levels normally associated with inductor-based LED drivers, while eliminating the Battery Voltage [v] associated high-profile inductors and unwanted EML. Most charge Features pump led drivers offer three modes of operation corresponding to the ratio of the output voltage to the input voltage: 1x, 1.5x and 2X 4 charge pump modes: 1x, 1.33, 1.5x, 2X The Quad-Mode architecture adds a fourth mode of operation, 1.33x 10%higher efficiency versus 3-mode charge pumps without the need for the additional capacitor required by all other No additional capacitors No inductor four-mode charge pumps Charge Pump/White and RGB LED Drivers- for LCD Backlight, LED Flash/Torch Input Total LED- LED Operating Voltage Output Charge Pump Current Number of Quiescent Shutdown Rans of Current Reglation Operating Matching, Dimming Current Level/ Current, Typ Current, Typ Devlce Outputs (mA) Mode Mode Typ Method Proflle (mA) (HA) Package CAT3606 2.7-5.5 180 Current 1x/1.5x +1.5% PWM System 1 WA max TQFN-16 CAT3616 2.7-5.5 Current 1x/1.5x ±3% Single Wire 32 0.5 1 HA max TQFN-16 CAT3626 2.7-5.5 6 192 Current 1x /1.5x ±3‰ Depends on System 0.5 1 uA max TQFN-16 CAT3636 2.2-55 192 Current 1X/133x/ 1.5X/2x ±1% Single Wire 05 1 uA max TQFN-16 CAT3637 22-55 192 Current 1x/1.33x/#1% Single Wire 1.5X/2x 05 1 HA max TQFN-16 CAT3604 2.7-5.5 120 Current 1x/1.5x PWM Depends on System 0.3005 AtypTQFN16 CAT3614 2.7-5.5 24 Current 1x/1.5x ±3% Single wire 0.5 1 uA max TDFN-12 CAT3604V 2.7-5.5 120 Current 1X/133X/ Depends on 1.5X/2X ±1.5% PWM System 1 HA max TQFN-16 CAT3644 22-5.5 TQFN-16 CAT3648 22-5.5 100 Current 1x/1.33x/ 1.5X/2x ±15% Single wire 1 HA max TQFN-16 NCP5604/B2:7-5.5304 Current 1X,1.33X 1.5X,2X ±0.2% PWM Depends on system 0.3 uA typ WQFN-16 Short circuit protection; OVP NCP5623 7-5.5 90 Current (Independent) 1X,2X ±0.5% 32/asig035 0.8 HA typ LLGA-12 Built-in"Gradual Dimming", OVP CAT3603 2.7-5.5 Current 1x/1.5x ±3% PWM 0.4 0.1 WA typ TDFN-12 XQFN-12 CAT3643 22-55 90 Current 1x/1.33x/ 1.5X/2X ±15% Single Wire 1 HA max TDFN-12 TQFN-16 CAT3647 2.2-5.5 Current 1x/1.33x 1.5X/2 ±15% Single Wire 1 HA max TQFN-16 C36227-51230011513%s6Wr2051 uA max TD12 S-Wire Link NCP5612 2.7-5.5 Current 1X, 1.5X +0.2%(Single Wire 16/ linear 1 uA typ LLGA-12 Built-in"con"mode; OVP Serial Link short circuit protection Page 4 LED Driver solutiong www.onseml.com Charge Pump/ White and RGB LED Drivers- for LCD Backlight, LED Flash/Torch(cont) Input Total LED-LED Operati VoltageNumberOutput Charge Pump Current Number of Quiescent Shutdown Range Current Reglation Operating Matching, Dimming Current Level/ Current, Typ Current, Typ Outputs(mA)Mode Typ Method Profile (mA) a NCP5602 2.75.5 2 60 Current 1X.1.5X 0.2% 12C 16/ linear 0.75 6 uA typ LLGA 12 Built-in"Icon!"mode:; OVP short circuit protection CAT3661* 2.0-5.5 Current 1X/133X/ 0.13 1 HA maxTQFN-16 Optimized for coin cell 1.5X/2X applications NCP5603 285-5.5 350mA Voltage 1X, 1.5X, 2X PWM Depends on 2.5 uA typ DFN-10 4.5/5Voutput; short circuit protection CAT3200 2.745 100Voltage PWM Depends on 1.7 system 1 uA typ TS0r-23-6 2 MHZ switching; soft start thermal shut down CAT320052,7-45 100 Voltage 2X PWM Depends on 17 system 1 uA typ MSOP- 2 MHZ switching; soft-start; thermal shut down Pending 1H10 Backlighting and Torch Inductive-Boost White-LED Drivers- for Backlighting and Torch/Flash Applications Input Max VoltageOutput Operating Shutdown Range Volt, Typ Output Number of LEDs/ Swiching Mode/ Dimming Efficiency Quiescent Current, Typ Device (V) (V) Current Condition Configuration Frequency Method (%) Current, Typ (uA) Package Notes NCP14221.0-5.0 5 PWM Vin 2.5v 1 for flash up to 1.2 MHz 13A 0.05 DEN-10 Internal synchronous CAT3725-7 1 to 4/ Series 1.2 MHZ PWM 0.5 TSOT23-5 LT1937 pinout CA3220-720 20 Vout =14V 1 to 4/ Series 1.2 MHz PWM 0.5 0.05 TS0T23-6/ LT1932 pinout TDFN-8 NCP50102755 30 Over 5 LED PWM Vin 3.3 v 2 to 5/series 1 MH PW 400pA Flip-Chip-8 Internal rectifier Internal switch betweer Nc02:1522100109102Dm 1.7 MHZ TDFN-10 torch flash current multiple branches 1.2s time-out CAT41372.25524 Vout 17 V 1 to 5/ Series 1 MHZ PWM 0.4 0.1Ts0T3-5 Isw= 350 mA Vin 3.5 GAT413920-5524 vout 14 V 1 to 5/ Series 1 MHZ PWM 0.6 0.1 TSOT23-5 ISw =850 mA Vin 3.0 NCP50052.7-5.5 4 Over 5 leD Vin 3.6 v to 5/se up to 2.25 MHz PWM TSOP sw-350 mA CAT42372.0 Vout 30. 1 to 8/ Series 1 MHz 0.6 0.1 TSOT23-5 ISw=450 mA Vin 3.6 GAT423820·5538 vout 33 V 1 MHz Vin 3.5 1 to 10/ series 0.6 0.1 OT23-5 ISw =450 mA ut 30 V CAT42402.05.538 250Ⅵ13,n 1 to 10/ Series 1 MH PWM 0.6 TS0T23-5 Isw=850 mA typical valle based on input and output voltage conditions ON Semiconductor age 5 Enabling Energy Efficient Solutions Micro Portable Linear Backlight Drivers ∽ Features 32 level of dimming control 25 ma tixed or adjustable versions aaaaaaa0aaaaa4daeaaaaanaaa EN/DIM Zero current shutdown (<1 uA) 5V/dNDE..--...---. No switching supply noise Tightly matched current LED sinks Ultra-low headroom current sink +++++++十++ Dropout voltage of 75 mv at 20 mA LoW profile micro packaging LED Mobile handsets Current 10mA/div Still and Video cameras Portable Gaming AL Portable medical devices 1ms/dMv 32.Step EZDIM Control Linear Backlight Drivers No of Current Avallable Packages Device Channels Fixed AdjustableSCL70-6LTSOT236UDFN-8 CAT4002A* CAT4004A* CAT4004B* Pend ng 1H10 3.6V VIN 工 CATA002B JUU-EN/SET LED2 LED1 GND Page 6 LED Driver solutiong www.onseml.com Camera flash and torch LEDs for camera phones, smart phones, and Xenon bulb replacement, are scaling up in light output to meet the needs of CP CN higher performance camera imagers VIN (2.5 to 5.5 v) VIN CAP 1 uF 1 uF Supercapacitor CAT3224 CAP 工 BAL FLAG 0.55F NCP5680 p LEDA FLASH CAT3224 SuperCap TORCH 5.0 RC NCP5050 RT GND Inductive 826 261 2A2A kQ CAT4134 aal channel -GND Boost 0.5 Features Provides charging for dual-cell supercapacitors Brightness Matched output channels Camera flash and torch Device Topology Input Voltage Range(V) Output Current Output Packa 2A NCP5680 Charge Pump 2.7-5.5 10 A flash, 200 mA torcH 2 channels HQFN-24 CAT3224 Charge Pump 2.5-5.5 4 A flash; 400 mA torch 2 channels TQFN-16 NCP5050 Inductive Boost 2.7-5.5 600mA Flash: 2 to 5 in series TDEN 10 CAT4134 Step-up Boost 2.0-5.5 500mA TDFN-12 Supercapacitor-Based 2x3 LEDS LED Driver ntegrated LCD Backlighting and Indicator Controller -NCP5890 Features 12C interface +vba NSR0240P2 Gradual dimming control 1 uF /50 V 7HIF Ambient light sensor 7F/63V GND Vbat Vbat GND >90% efficiency SCL ±1% current led accuracy SDA匚 Voss 470R 30 V maximum string voltage VDD 12CADR 0 3 segment PWM control SDA GND 068s ·13 MHz operation NCP5890 PWM1 Applications VSS Ambient Smartphones PWM2 SenSor Portable medical devices IREF PWM3 Video and still cameras Personal navigation systems AGND PGND Portable gaming Educational toys GND ON Semiconductor ge 7 Enabling Energy Efficient Solutions Coin Cell optimized led Driver -* ∽ Innovative portable devices are now powered from coin cells. due to the Features unique characteristics of these batteries and the need for long lifetime 2-5.5V Single LED Driver operation, it is important to have an LED backlight driver tailor-made for Quad mode charge pump architecture these compact applications that not only manages the backlighting but Driver Efficiency up to 92% also the battery monitoring Low quiescent current Robust LED Fault Monitoring Soft start and short circuit limiting Adjustable Low Battery Detect Low profile 3 x 3 mm TQFN-16 package 68 Applications 124/78 Glucose meters SP02 97 STAR Digital Thermometers 18 Pulse Oximeters Breath Analyzers Biometric monitors 047uF0.47uF CrO2 Battery C1+C1c2+C2 VIM VOUT ADJ 1M之1M CAT3661 ADJL 1F⊥LED LoW Battery Fault OFLtB LED Fault nFLTL LED NOFF→_EN RSET GND 60k Pending 1H10 Page 8 LED Driver solutiong www.onseml.com Intelligent LED Control for Signage and Architectural Lighting Two widely used applications for LEDs are addressable signage applications, information can be updated in real time traffic and architectural lighting, which utilize the wide range of available displays, video images, and advertising. ON Semiconductor LEd colors and their long operating lifetime. In architectural offers a series of linear solutions that can accurately regulate lighting, the use of LEds allows vivid colors in lighting facades led current and have programmable interfaces to allow soft and enhancement of structural details. In moving signage ware control LED Controllers lout per Channel Dropout Voltage Shutdown Current Max Dimming Device LEDS (mA) Interface Features Packages Architectural Signage CAT310 5.5 4-Wire SOIC-20 CA400830-55 8 100 300@30mA 4-Wire Thermal Shutdown: UVLO S0C-16,TSS0P-16 CA401630-5516 100 400@30mA 4-Wire Thermal shutdown: UVLO QS0P-24, SOlC-24 TQFN-24, TSSOP-24 CAT410130-55/258 1000 500@1A 1111 PWM Therma shutdown: UVLO T02635 CAT41033.0-55/258×3 175 400@175mA 3 Independent Current Sinks; Cascadable S0|C-16 CAT41043.0-55/258×4 175 40075mA Therma shutdown: UVLO SOIC-8, TOFN-8 CAT41930-5.5/258X3 175 400@175mA 3 Independent Current Sinks S0|C-16 8 and 16 Channel constant current led sink drivers Features Applications +1.5% typical channel matching Intelligent vehicle signs Up to 100 mA drive per channel Scrolling banners 300 mv dropout at 30 mA Billboard signs Robust protection(UVLO, thermal shutdown) Marque signs Cascadable 25 MHz capable 4-wire data interface Gaming and pachinko · Sports scoreboards Resources Evaluation board LED1 LED2 LED3 LED8 VIN CURRENT 工 ①|c SINKS RSET Setting BLANK□ 1.2 V Ref □GND LATCHES LATCH□ LO L1 L L8 SHIFT REGISTER SN口 0s1S2 SOUT 影N CLK CAT4008 ON Semiconductor age 9 Enabling Energy Efficient Solutions 3-Channel Cascade- Capable Driver with Independent Current Control-CAT4103 Features LED1 LED2 LED3 口口 Up to 25 V per string 1.2 V Ref Robust protection(UVLO, thermal shutdown) RGB Drivers can be individually controlled or cascaded CURRENT Current Setting口RsET1 Drivers to support currents of up to 175 mA per channel SINKS VDD囗 Current Settingk-orSet2 Applications 8 Accent lighting ①⑦|⑦_ urrent Setting-RsE3 Color mixing BIN L 口BOUT Effects lighting BLANK Mood lighting ATCH Resources 命 L|N口 CAT4103 LO L1 L2 ·EVa|uatⅰ on board □LoUT SHIFT SO S1 S2 口SOUT ODCK VIN CIN CLOCK □coUT 5 to 25 V VDD 3 to 5.5 V GND RED GREEN BLUE VDD LED1 LED2 LED3 BIN BOUT NEXT CONTROLLER LOUT CAT4103 CAT4103 SIN SOUT CIN COUT GND RSET1 RSET2 RSET3 < Page 10 LED Driver solutiong