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FEATURES DESCRIPTION

APPLICATIONS

OFF

VBAT

LBI

SKIPEN

LDOEN

SWN

VOUT

PGOOD

LBO

LDOIN

LDOOUT

LDOSENSE

GND PGND

Control

Inputs

Control

Outputs

out1

out2

TPS61120

Battery

SWP

10 H

10 F

100 F

2.2 F

TPS61120

TPS61122, TPS61121

SLVS427C – JUNE 2002 – REVISED APRIL 2004

SYNCHRONOUS BOOST CONVERTER WITH 1.1A SWITCH AND INTEGRATED LDO

• Synchronous, 95% Efficient, Boost Converter

The TPS6112x devices provide a complete power

With 500-mA Output Current From 1.8-V Input

supply solution for products powered by either a

one-cell Li-Ion or Li-Polymer or a two up to 4 cells

• Integrated 200-mA Reverse Voltage Protected

Alkaline, NiCd or NiMH batteries. The devices can

LDO for DC/DC Output Voltage Post Regu-

generate two stable output voltages that are either

lation or Second Output Voltage

adjusted by an external resistor divider or fixed

• 40-µA (Typical) Total Device Quiescent Cur-

internally on the chip. It also provides a simple

rent

solution for generating 3.3 V out of a one-cell Li-Ion

or Li-Polymer battery at a maximum output current of

• Input Voltage Range: 1.8-V to 5.5-V

at least 200 mA with supply voltages down to 1.8 V.

• Fixed and Adjustable Output Voltage Options

The implemented boost converter is based on a fixed

up to 5.5-V

frequency, pulse-width-modulation (PWM) controller

• Power Save Mode for Improved Efficiency at

using a synchronous rectifier to obtain maximum

Low Output Power

efficiency. The maximum peak current in the boost

switch is limited to a value of 1600 mA.

• Low Battery Comparator

• Power Good Output

The converter can be disabled to minimize battery

drain. During shutdown, the load is completely dis-

• Low EMI-Converter (Integrated Antiringing

connected from the battery. A low-EMI mode is

Switch)

implemented to reduce ringing and in effect lower

• Load Disconnect During Shutdown

radiated electromagnetic energy when the converter

• Overtemperature Protection

enters the discontinuous conduction mode. A power

good output at the boost stage simplifies control of

• Available in a Small 4mm x 4mm QFN-16 or in

any connected circuits like cascaded power supply

a TSSOP-16 Package

stages or microprocessors.

The built-in LDO can be used for a second output

voltage derived either from the boost output or

• All Single Cell Li or Dual Cell Battery or USB

directly from the battery. The LDO can be enabled

Powered Products as MP-3 Player, PDAs, and

separately i.e., using the power good of the boost

Other Portable Equipment

stage. The device is packaged in a 16-pin QFN

• Dual Input or Dual Output Mode

package measuring 4 mm x 4 mm (RSA) or in a

• Simple Li-Ion to 3.3-V Conversion

16-pin TSSOP (PW) package.

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (32 pages)

PAGE 1
www.ti.com TPS61120 TPS61122, TPS61121 SLVS427C – JUNE 2002 – REVISED APRIL 2004 SYNCHRONOUS BOOST CONVERTER WITH 1.1A SWITCH AND INTEGRATED LDO FEATURES • • • • • • • • • • • • DESCRIPTION Synchronous, 95% Efficient, Boost Converter With 500-mA Output Current From 1.
PAGE 2
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 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.
PAGE 3
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 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 TEST CONDITIONS MIN TYP MAX UNIT VI Input voltage range 1.8 5.5 V VO Adjustable output voltage range (TPS61120) 2.5 5.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 CONTROL STAGE Power-Good threshold VO = 3.3 V 0.9xVo Power-Good delay 0.92xVo 0.95xVo 30 Power-Good output low voltage VO = 3.3 V, IOI = 100 µA 0.04 Power-Good output low current Power-Good output leakage current 0.4 100 VPG = 7 V 0.01 V µs V µA 0.
PAGE 5
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 FUNCTIONAL BLOCK DIAGRAM SWN SWP Backgate Control AntiRinging VBAT VOUT 100 kΩ VOUT Vmax Control 20 pF Gate Control PGND PGND Regulator PGND Error Amplifier _ FB + Vref = 0.5 V Control Logic + _ GND Oscillator Temperature Control EN PGOOD ENLDO SYNC LDOIN Backgate Control GND LDOOUT Error Amplifier LBO Low Battery Comparator _ LBI + + _ _ LDOFB + Vref = 0.5 V + _ GND Vref = 0.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 PARAMETER MEASUREMENT INFORMATION U1 L1 10 µH Power Supply C3 10 µF SWN SWP VBAT VOUT R3 R1 C6 2.2 µF FB LBI LDOIN R2 SKIPEN R6 Vout2 LDO Output LDOOUT R5 List of Components: U1 = TPS6112xPW L1 = Sumida CDRH73−100 C3, C5, C6 = X7R/X5R Ceramic C4 = Low ESR Tantalum R4 LDOEN GND R7 R9 LBO PGOOD PGND TPS6112xPW 6 C5 2.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 TYPICAL CHARACTERISTICS Table of Graphs BOOST CONVERTER Maximum output current FIGURE vs Input voltage 1, 2 vs Output current (TPS61120) (VO = 2.5 V, VI = 1.8 V) 3 vs Output current (TPS61121) (VO = 3.3 V, VI = 1.8 V, 2.4 V) 4 vs Output current (TPS61120) (VO = 5.0 V, VI = 2.4 V, 3.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 TPS61120 MAXIMUM BOOST CONVERTER OUTPUT CURRENT vs INPUT VOLTAGE TPS61120 MAXIMUM BOOST CONVERTER OUTPUT CURRENT vs INPUT VOLTAGE 1 1.4 0.90 Maximum Output Current - A Maximum Output Current - A 1.2 1 0.8 VO = 5 V 0.6 0.4 0.80 0.70 VO = 2.5 V 0.60 0.50 0.40 0.30 0.20 0.2 0.10 0 1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 0 1.8 5 1.9 2 2.1 2.2 2.3 VI - Input Voltage - V VI - Input Voltage - V 2.4 Figure 1. Figure 2.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 TPS61120 BOOST CONVERTER EFFICIENCY vs OUTPUT CURRENT 100 TPS61121 BOOST CONVERTER EFFICIENCY vs INPUT VOLTAGE 100 VI = 3.3 V IO = 200 mA IO = 10 mA 90 VI = 2.4 V 80 90 Efficiency - % Efficiency - % 70 60 50 40 IO = 100 mA 80 30 70 20 VO = 5 V 10 0 0.1 1 10 100 60 1.8 1000 IO - Output Current - mA 2.2 2.4 2.6 2.8 VI - Input Voltage - V Figure 5. Figure 6.
PAGE 10
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 TPS61121 NO-LOAD SUPPLY CURRENT INTO VOUT vs INPUT VOLTAGE TPS61121 BOOST CONVERTER OUTPUT VOLTAGE IN CONTINUOUS MODE No-Load Supply Current Into VOUT - µ A 14 VI = 2.4 V, RL = 33 85°C 12 Output Voltage 20 mV/Div, AC 25°C -40°C 10 8 6 Inductor Current 200 mA/Div, DC 4 2 0 VO = 3.3 V 1.8 2 2.2 2.4 2.6 2.8 VI - Input Voltage - V 3 Timebase - 1 µs/Div 3.2 Figure 9. Figure 10.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 TPS61121 BOOST CONVERTER LINE TRANSIENT RESPONSE VI = 2.0 V to 2.4 V RL = 33 TPS61121 BOOST CONVERTER START-UP AFTER ENABLE Input Voltage 500 mV/Div, DC Enable 5 V/Div, DC Output Voltage 2 V/Div, DC Voltage at SW 2 V/Div, DC Output Voltage 50 mV/Div, AC Input Current 500 mV/Div, DC VI = 2.4 V, RL = 33 VO = 3.3 V VO = 3.3 V Timebase - 200 µs/Div Timebase - 400 µs/Div Figure 13. Figure 14.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 TPS61122 LDO OUTPUT VOLTAGE vs LDO OUTPUT CURRENT LDO DROPOUT VOLTAGE vs LDO OUTPUT CURRENT 3.5 3.4 3.38 3 LDO Dropout Voltage - V LDO Output Voltage - V 3.36 3.34 3.32 3.3 3.28 3.26 TPS61121 (LDO OUTPUT VOLTAGE 1.5 V) 2.5 2 TPS61122 (LDO OUTPUT VOLTAGE 3.3 V) 1.5 1 3.24 0.5 3.22 0 3.2 0 50 100 150 200 250 300 LDO Output Current - mA 350 10 400 60 110 160 210 260 LDO Output Current - mA Figure 17.
PAGE 13
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 TPS61121 LDO LOAD TRANSIENT RESPONSE VI = 3.3 V IL = 20 mA to 180 mA Output Current 100 mA/Div, DC TPS61121 LDO LINE TRANSIENT RESPONSE VI = 1.8 V to 2.6 V RL = 15 Input Voltage 1 V/Div, DC Output Voltage 10 mV/Div, AC Output Voltage 20 mV/Div, AC VO = 1.5 V VO = 1.5 V Timebase - 500 µs/Div Timebase - 2 ms/Div Figure 21. Figure 22. TPS61121 LDO START-UP AFTER ENABLE VI = 3.
PAGE 14
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 APPLICATION INFORMATION DESIGN PROCEDURE The TPS6112x dc/dc converters are intended for systems powered by a dual or triple cell NiCd or NiMH battery with a typical terminal voltage between 1.8 V and 5.5 V. They can also be used in systems powered by one-cell Li-Ion with a typical stack voltage between 2.5 V and 4.2 V.
PAGE 15
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 LDO Programming the output voltage at the LDO follows almost the same rules as in the dc/dc converter section. The maximum programmable output voltage at the LDO is 5.5 V. Since reference and internal feedback circuitry are similar, as they are at the boost converter section, R4 also should be in the 200-kΩ range.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 List of Inductors VENDOR RECOMMENDED INDUCTOR SERIES CDRH5D18 Sumida CDRH6D28 Wurth Electronik 7447789___ 7447779___ DR73 Coiltronics DR74 TDK SLF 7032 EPCOS B82462G Capacitor Selection Input Capacitor At least a 10-µF input capacitor is recommended to improve transient behavior of the regulator and EMI behavior of the total power supply circuit.
PAGE 17
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 Output Capacitor LDO To ensure stable output regulation, it is required to use an output capacitor at the LDO output. Ceramic capacitors in the range from 1 µF up to 4.7 µF is recommended. At 4.7 µF and above it is recommended to use standard ESR tantalum. There is no maximum capacitance value.
PAGE 18
TPS61120 TPS61122, TPS61121 SLVS427C – JUNE 2002 – REVISED APRIL 2004 www.ti.com DETAILED DESCRIPTION (continued) Undervoltage Lockout An undervoltage lockout function prevents device start-up if the supply voltage on VBAT is lower than approximately 1.6 V. When in operation and the battery is being discharged, the device automatically enters the shutdown mode if the voltage on VBAT drops below approximately 1.6 V.
PAGE 19
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 LAYOUT CONSIDERATIONS As for all switching power supplies, the layout is an important step in the design, especially at high peak currents and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as well as EMI problems. Therefore, use wide and short traces for the main current path and for the power ground tracks.
PAGE 20
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 APPLICATION INFORMATION U1 L1 SWN SWP VBAT 10 µH 3.3 V VOUT C6 2.2 µF R1 C3 10 µF LBI R2 C4 100 µF LDOIN SKIPEN 1.5 V LDOOUT C5 2.2 µF LDOSENSE EN R7 List of Components: U1 = TPS61121PW L1 = Sumida 5D18−100 C3, C5, C6 = X7R/X5R Ceramic C4 = Low ESR, Low Profile Tantalum LDOEN GND R9 LBO LBO PGOOD PGND PGOOD TPS61121PW Figure 26. Low Profile Solution, Maximum Height 1,8 mm 6V C7 U1 0.
PAGE 21
TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 APPLICATION INFORMATION (continued) −3 V C7 U1 C8 1 µF 0.1 µF L1 10 µH DS1 SWN SWP VBAT VOUT 3.3 V C6 2.2 µF R1 C3 10 µF LBI R2 LDOIN SKIPEN 1.5 V LDOOUT C5 2.2 µF LDOSENSE EN R7 List of Components: U1 = TPS61121PW L1 = Sumida CDRH73−100 C3, C5, C6, C7, C8 = X7R/X5R Ceramic C4 = Low ESR Tantalum DS1 = BAT54S C4 100 µF LDOEN GND R9 LBO LBO PGOOD PGND PGOOD TPS61121PW Figure 28.
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TPS61120 TPS61122, TPS61121 www.ti.com SLVS427C – JUNE 2002 – REVISED APRIL 2004 APPLICATION INFORMATION (continued) USB Input 4.2 V...5.5 V D1 U1 L1 10 µH C3 10 µF SWN SWP VBAT R3 1 MΩ R1 FB LBI LDOIN R2 SYNC LDOOUT LDOSENSE EN List of Components: U1 = TPS61120PW L1 = Sumida CDRH73–100 C3, C5, C6 = X7R/X5R Ceramic C4 = Low ESR Tantalum D1 = On-Semiconductor MBR0520 VOUT R5 1.022 MΩ R7 LBO GND C4 100 µF R6 180 kΩ R4 180 kΩ LDOEN C6 2.2 µF VCC 3.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 29-Aug-2013 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS61120PWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 TPS61120RSAR QFN RSA 16 3000 330.0 12.4 4.3 4.3 1.5 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS61120PWR TPS61120RSAR TSSOP PW 16 2000 367.0 367.0 35.0 QFN RSA 16 3000 338.1 338.1 20.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.