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Details, datasheet, quote on part number:TPS61120RSAR
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| Part: | TPS61120RSAR |
| Category: | Power Management => DC-DC Converters => DC-DC Switching => Switching DC/DC Converters, Integrated Switch |
| Description: | ti TPS61120, Adjustable, 95% Efficient Boost Converter With 200-mA LDO For 1-Cell Liion or Dual-cell Applications |
| Company: | Texas Instruments, Inc. |
| Datasheet: | Download TPS61120RSAR datasheet File size : 442 kB |
| Request For quote: | Find where to buy TPS61120RSAR
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Datasheet text preview:
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Actual Size (5,0 mm x 6,4 mm)
Actual Size (4,15 mm x 4,15 mm)
TPS61120 TPS61121 TPS61122
SLVS427A JUNE 2002 REVISED AUGUST 2003
SYNCHRONOUS BOOST CONVERTER WITH 1.1A SWITCH AND INTEGRATED LDO
FEATURES
· · Synchronous, 95% Efficient, Boost Converter With 500-mA Output Current From 1.8-V Input Integrated 200-mA Reverse Voltage Protected LDO for DC/DC Output Voltage Post Regulation or Second Output Voltage Dual Input or Dual Output Mode Available in a 16-Pin QFN 4x4 or in a TSSOP-16 Package 40-µA (Typical) Total Device Quiescent Current Input Voltage Range: 1.8-V to 5.5-V Adjustable Output Voltage up to 5.5-V, Fixed Output Voltage Options Power Save Mode for Improved Efficiency at Low Output Power Simple Li-Ion to 3.3-V Conversion Low Battery Comparator Power Good Output Low EMI-Converter (Integrated Antiringing Switch) Load Disconnect During Shutdown Overtemperature Protection
DESCRIPTION
The TPS6112x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer or a two up to 4 cells Alkaline, NiCd or NiMH batteries. The converter can generate two stable output voltages that are either adjusted by an external resistor divider or fixed internally on the chip. It also provides a simple solution for generating 3.3 V out of the one-cell Li-Ion or Li-Polymer battery at a maximum output current of at least 200 mA with supply voltages down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the boost switch is limited to a value of 1600 mA. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and in effect lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. A power good output at the boost stage simplifies control of any connected circuits like cascaded power supply stages or microprocessors. The built-in LDO can be used for a second output voltage derived either from the boost output or directly from the battery. The output voltage of this LDO can be programmed by an external resistor divider or is fixed internally on the chip. The LDO can be enabled separately i.e., using the power good of the boost stage. The device is packaged in a 16-pin QFN 4 x 4 mm (16 RSA) or in a 16-pin TSSOP (16 PW) package.
10 mH
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APPLICATIONS
· All Single Cell Li or Dual Cell Battery or USB Powered Products as MP-3 Player, PDAs, and Other Portable Equipment
VBAT Battery 10 mF
SWN SWP VOUT TPS61120 FB Vout1 100 mF
LBI
OFF Control Inputs OFF OFF
ON ON ON
SKIPEN EN LDOEN
PGOOD LBO LDOIN LDOOUT
Control Outputs
Vout2 2.2 mF
GND
PGND
LDOSENSE
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. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 2002 2003, Texas Instruments Incorporated
TPS61120 TPS61121 TPS61122
SLVS427A JUNE 2002 REVISED AUGUST 2003
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
AVAILABLE OUTPUT VOLTAGE OPTIONS (1)
TA OUTPUT VOLTAGE DC/DC Adjustable 3.3 V 40°C to 85°C 3.6 V Adjustable 3.3 V (1) (2) OUTPUT VOLTAGE LDO Adjustable 1.5 V 3.3 V Adjustable 1.5 V 16-Pin TSSOP 16-Pin TSSOP 16-Pin TSSOP 16-Pin QFN 4x4mm 16-Pin QFN 4x4mm PACKAGE PART NUMBER (2) TPS61120PW TPS61121PW TPS61122PW TPS61120RSA TPS61121RSA
Contact the factory to check availability of other fixed output voltage versions. The packages are available taped and reeled. Add R suffix to device type (e.g., TPS61120PWR or TPS61120RSAR) to order quantities of 2000 devices per reel for the TSSOP (PW) package and 3000 devices per reel for the QFN (RSA) package.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted (1)
TPS6112x Input voltage range on FB Input voltage range on SWN, SWP Input voltage range on VOUT, LDOIN, LDOOUT, LDOEN, LDOSENSE, PGOOD, LBO, VBAT, LBI, SKIPEN, EN Operating free air temperature range TA Maximum junction temperature TJ Storage temperature range Tstg (1) -0.3 V to 3.6 V -0.3 V to 10 V -0.3 V to 7 V -40°C to 85°C 150°C -65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
MIN Supply voltage at VBAT, VI DC/DC--inductance, L DC/DC--input capacitance, Ci DC/DC--output capacitance, Co LDO--input capacitance, Ci LDO--output capacitance, Co Operating virtual junction temperature, TJ 1 -40 22 1.8 4.7 10 10 100 1 2.2 125 NOM MAX UNIT 5.5 V µH µF µF µF µF °C
2
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TPS61120 TPS61121 TPS61122
SLVS427A JUNE 2002 REVISED AUGUST 2003
ELECTRICAL CHARACTERISTICS
over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature range of 25°C) (unless otherwise noted)
DC/DC STAGE PARAMETER VI VO Vref f ISW Input voltage range Adjustable output voltage range (TPS61120) Reference voltage Oscillator frequency Switch current limit Startup current limit SWN switch on resistance VOUT= 3.3 V SWP switch on resistance VOUT= 3.3 V Total accuracy (including line and load regulation) DC/DC quiescent current into VBAT into VOUT IO= 0 mA, VEN = VBAT = 1.8 V, VOUT = 3.3 V, ENLDO = 0 IO = 0 mA, VEN = VBAT = 1.8 V, VOUT = 3.3 V, ENLDO = 0 VEN= 0 V 1.8 0.9 200 320 500 IO= 200 mA IO 1 mA LDOIN change from 1.8 V to 2.6 V at 100 mA, LDOOUT = 1.5 V Load change from 10% to 90%,LDOIN = 3.3 V LDOIN = 7 V, VBAT = 1.8 V, EN = VBAT LDOEN = 0 V, LDOIN = 7 V VLBI voltage decreasing EN = VBAT or GND VO = 3.3 V, IOI = 100 µA VLBO = 7 V 490 20 0.1 500 10 0.01 0.04 100 0.01 0.1 0.2 × VBAT 0.8 × VBAT 0.2 × VLDOIN 0.1 0.4 300 ±3% 0.6% 0.6% 30 1 510 µA µA mV mV µA V µA µA V V V 3 10 10 0.2 VOUT= 3.3 V TEST CONDITIONS MIN 1.8 2.5 485 400 1100 500 500 1300 0.4 x ISW 200 250 350 500 3% 25 25 1 7 5.5 µA µA µA V V mA mA mV TYP MAX 5.5 5.5 515 600 1600 UNIT V V mV kHz mA mA m m
DC/DC shutdown current LDO STAGE VI(LDO) VO(LDO) IO(max) Input voltage range Adjustable output voltage range (TPS61120) Output current LDO short circuit current limit Minimum voltage drop Total accuracy (including line and load regulation) Line regulation Load regulation LDO quiescent current LDO shutdown current CONTROL STAGE VIL LBI voltage threshold LBI input hysteresis LBI input current LBO output low voltage LBO output low current LBO output leakage current VIL VIH VIL EN, SKIPEN input low voltage EN, SKIPEN input high voltage LDOEN input low voltage
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