TPS60251RTWT ,High Efficiency Charge Pump for 7 WLEDs with I2C Interface 24-WQFN -40 to 85FEATURES• Multidisplay Handheld Devices• 3.0-V to 6.0-V Input Voltage Range• ×1 and ×1.5 Charge Pum ..
TPS60252RTER ,High Efficiency Charge Pump for 7 WLEDs with I2C Interface 16-WQFN -40 to 85ELECTRICAL CHARACTERISTICS (continued)V = 3.5 V, T = –40°C to 85°C, typical values are at T = 25°C ..
TPS60255RTER ,7-Channel, High Efficiency 175-mA Charge Pump for White LED Backlight 16-WQFN -40 to 85features include soft start, over-current• 25 mA max LED Current for Six Current Sinkslimit, therma ..
TPS60255RTET ,7-Channel, High Efficiency 175-mA Charge Pump for White LED Backlight 16-WQFN -40 to 85ELECTRICAL CHARACTERISTICS (continued)V = 3.5 V, T = –40°C to 85°C, typical values are at T = 25°C ..
TPS60300DGS ,Single-Cell to 3.0V/3.3V, 20mA Dual Output, High Efficiency Charge Pump SLVS302B–DECEMBER 2000–REVISED OCTOBER 20155 Description (continued)The devices operate in the new ..
TPS60300DGSG4 ,Single-Cell to 3.0V/3.3V, 20mA Dual Output, High Efficiency Charge Pump 10-VSSOP -40 to 85Features 3 DescriptionThe TPS6030x devices are a family of switched-1• Input Voltage Range From 0.9 ..
TSM104AIDT ,QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCETSM104/AQUAD OPERATIONAL AMPLIFIER ANDPROGRAMMABLE VOLTAGE REFERENCENOT FOR NEW DESIGN - REPLACED B ..
TSM104AIN ,QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCEapplications like power supply man-N = Dual in Line Package (DIP)agement or data acquisition system ..
TSM104I ,QUAD OPERATIONAL AMPLIFIER AND PROGRAMMABLE VOLTAGE REFERENCEapplications like power supply manage-o oTSM104I/AI -40 C, +105 C ••ment or data acquisition system ..
TSM104ID ,QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCEELECTRICAL CHARACTERISTICS+ -V = 5V, V = 0V, T = 25°C (unless otherwise specified) CC CC ambSymbo ..
TSM104IDT ,QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCEapplications like power supply man-N = Dual in Line Package (DIP)agement or data acquisition system ..
TSM104IN ,QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCETSM104/AQUAD OPERATIONAL AMPLIFIER ANDPROGRAMMABLE VOLTAGE REFERENCENOT FOR NEW DESIGN - REPLACED B ..
TPS60251RTWR-TPS60251RTWT
High Efficiency Charge Pump for 7 WLEDs with I2C Interface
TPS60251 www.ti.com SLVS767C–APRIL 2007–REVISED NOVEMBER 2007 2 HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I C INTERFACE 1 • PDA, PMP, GPS (Up To 4 Inch Display) FEATURES • Multidisplay Handheld Devices • 3.0-V to 6.0-V Input Voltage Range • ×1 and ×1.5 Charge Pump DESCRIPTION 2 • Fully Programmable Current with I C The TPS60251 is a high efficiency, constant – 64 Dimming Steps with 25mA Maximum frequency charge pump DC/DC converter that uses a (Sub and Main Display Banks) dual mode 1× and 1.5× conversion to maximize – 4 Dimming Steps with 80mA Maximum efficiency over the input voltage range. It drives up to (DM5 for Auxiliary Application) five white LEDs for a main display and up to two white LEDs for a sub display with regulated constant • 2% Current Matching for Sub LEDs at Light current for uniform intensity. By utilizing adaptive Load Condition (Each 100μA) 1×/1.5× charge pump modes and very low-dropout • 750-kHz Charge Pump Frequency current regulators, the TPS60251 achieves high • Continuous 230-mA Maximum Output Current efficiency over the full 1-cell lithium-battery input voltage range. • Auto Switching Between ×1 and ×1.5 Mode for Maximum Efficiency Four enable inputs, ENmain, ENsub1, ENsub2, and 2 ENaux, available through I C, are used for simple • Built-in Soft Start and Current Limit on/off controls for the main, sub1, sub2, and DM5 • Hardware Enable/Disable displays, respectively. To lower operating current • Open Lamp Detection when using one sub display LED, the device provides • 24-Pin 4mm x 4mm QFN independent operation in sub display LEDs. The TPS60251 is available in a 24-pin 4mmx4mm APPLICATIONS thin QFN. • Cellular Phones Main Display 95 90 85 GND IS DM4 DM3 DM 2 DM1 80 NC C 1- 75 C 2+ NC-G C2 C3 1uF 1uF C2- GND 70 GND C 1+ 65 VOUT NC 60 Auxiliary Port for Key Pad C4 or Flash Light 4.7uF VIN VIO 55 4 Main LED - 15 mA, V = 3.1 V SDAT ENA DS1 DS2 DM5 F C 1 4.7uF 50 SCLK 1.8V for I /O Input 3 3.5 4 4.5 5 5.5 6 2 I C Interface V - Input Voltage - V I Sub Display Figure 1. Typical Application for Sub and Main Figure 2. Efficiency vs Input Voltage (1) ORDERING INFORMATION PART NUMBER PACKAGE T A TPS60251RTW 24 Pin 4 mm × 4 mm QFN (RTW) –40°C to +85°C (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Efficiency - %
