LMK316BJ475KL

TPS60403 TI | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 23

Technical content

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001 1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

features

/C0068Inverts Input Supply Voltage /C0068Up to 60-mA Output Current /C0068Only Three Small 1-µF Ceramic Capacitors Needed /C0068Input Voltage Range From 1.6 V to 5.5 V /C0068PowerSave-Mode for Improved Efficiency at Low Output Currents (TPS60400) /C0068Device Quiescent Current Typical 100 µA /C0068Integrated Active Schottky-Diode for Start-Up Into Load /C0068Small 5-Pin SOT23 Package /C0068Evaluation Module Available TPS60400EVM–178

applications

/C0068LCD Bias /C0068GaAs Bias for RF Power Amps /C0068Sensor Supply in Portable Instruments /C0068Bipolar Amplifier Supply /C0068Medical Instruments /C0068Battery-Operated Equipment

description

The TPS6040x is a family of devices that generate an unregulated negative output voltage from an input voltage to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can also power them. Only three external 1-µF capacitors are required to build a complete dc/dc charge pump inverter. Assembled in a 5-pin SOT23 package, the complete converter can be built on a 50 mm 2 board area. Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry. The TPS6040x can deliver a maximum output current of 60 mA with a typical conversion efficiency of greater than 90% over a wide output current range. Three device options with 20-kHz, 50-kHz, and 250-kHz fixed frequency operation are available. One device comes with a variable switching frequency to reduce operating current in applications with a wide load range and enables the design with low-value capacitors. typical application circuit TPS60400 C FLY– C FLY+ OUTIN GND C I 1 µF C O 1 µF Output –1.6 V to –5 V, Max 60 mA Input 1.6 V to 5.5 V C (fly) 1 µF 012345 IO = 60 mA IO = 30 mA IO = 1 mA TA = 25°C VI – Input Voltage – V – Output Voltage – V TPS60400 OUTPUT VOLTAGE vs INPUT VOLTAGE V O Copyright  2001, Texas Instruments Incorporated 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. DBV PACKAGE (TOP VIEW) 1OUT IN C FLY– C FLY+ GND 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.

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PART NUMBER † MARKING DBV PACKAGE TYPICAL FLYING CAPACITOR [µF] FEATURE TPS60400DBV PFKI 1 Variable switching frequency 50 kHz–250 kHz TPS60401DBV PFLI 10 Fixed frequency 20 kHz TPS60402DBV PFMI 3.3 Fixed frequency 50 kHz TPS60403DBV PFNI 1 Fixed frequency 250 kHz † The DBV package is available taped and reeled. Add R suffix to device type (e.g. TPS60400DBVR) to order quantities of 3000 devices per reel. Add T suffix to device type (e.g. TPS60400DBVT) to order quantities of 250 devices per reel. TPS60400 functional block diagram Start FF R S Q VI – VCFLY+ < 0.5 V VI MEAS VI < 1 V VI VO > Vbe VO MEAS VO OSC OSC CHG 50 kHz VO > –1 V VI / VO MEAS VI VO VCO_CONT VO < –VI – Vbe Phase Generator DC_ Startup C (fly) Q3Q2 VI VO GND Q Q B DC_ Startup Terminal Functions TERMINAL I/O DESCRIPTIONNAME NO. I/O DESCRIPTION C FLY+ 5 Positive terminal of the flying capacitor C(fly) C FLY– 3 Negative terminal of the flying capacitor C(fly) GND 4 Ground IN 2 I Supply input. Connect to an input supply in the 1.6-V to 5.5-V range. Bypass IN to GND with a capacitor that has the same value as the flying capacitor. OUT 1 O Power output with VO = –VI Bypass OUT to GND with the output filter capacitor CO .

positive than –VI, since switches S1–S4 have resistance and the load drains charge from CO . Figure 1. Operating Principle droop toward GND as load current increases.

2 C O /C0466V 2

4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

by their output impedance at higher current. Where, IQ = quiescent current. the output noise and ripple requirements. It is possible to only use 1-µF capacitors of the same type. resistance becomes dominated by the internal switch resistance and capacitor ESR. tolerated. Use the following equation to calculate the peak-to-peak ripple. Table 1. Recommended Capacitor Values

Table 2. Recommended Capacitors lowest output voltage ripple because they typically have the lowest ESR-rating. Table 3. Recommended Capacitor Manufacturers implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

recommended operating conditions MIN NOM MAX UNIT Input voltage range, VI 1.8 5.25 V Output current range at OUT, IO 60 mA Input capacitor, CI 0 C (fly) µF Flying capacitor, C(fly) 1 µF Output capacitor, CO 1 100 µF Operating junction temperature, TJ –40 125 °C electrical characteristics at CI = C(fly) = CO (according to Table 1), TC = –40°C to 85°C, VI = 5 V over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT V Supply voltage range At TC = –40°C to 85°C, RL = 5 kΩ 1.8 5.25 VVI Supply voltage range At TC ≥ 0°C, RL = 5 kΩ 1.6 V IO Maximum output current at VO 60 mA VO Output voltage –VI V TPS60400 C (fly) = 1 µF, CO = 2.2 µF 35 V Output voltage ripple TPS60401 I5 m A C (fly) = CO = 10 µF 20 mVVP–P Output voltage ripple TPS60402 IO = 5 mA C (fly) = CO = 3.3 µF 20 mV P–P TPS60403 C (fly) = CO = 1 µF 15 TPS60400 125 270 TPS60401 At V 5 V 65 190 ATPS60402 At VI = 5 V 120 270 µA I Quiescent current (no-load input TPS60403 425 700 IQ Quiescent current (no-load in ut current) TPS60400 210 TPS60401 At T≤ 60°C V5 V 135 ATPS60402 At T ≤ 60°C, VI = 5 V 210 µA TPS60403 640 TPS60400 VCO version 30 50–250 350 fOSC Internal switching frequency TPS60401 13 20 28 kHzfOSC Internal switching frequency TPS60402 30 50 70 kHz TPS60403 150 250 300 TPS60400 C I = C(fly) = CO = 1 µF 12 15 Impedance at 25°CV I=5V TPS60401 C I = C(fly) = CO = 10 µF 12 15 ΩImpedance at 25°C, VI = 5 V TPS60402 C I = C(fly) = CO = 3.3 µF 12 15 Ω TPS60403 C I = C(fly) = CO = 1 µF 12 15

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

0.1 100 0.1 1 10 100 TPS60400 VI = 5 V TPS60401 VI = 5 V TPS60401 VI = 2 V TPS60400 VI = 2 V TA = 25°C – Input Current – mA TPS60400 , TPS60401 INPUT CURRENT vs OUTPUT CURRENT IO – Output Current – mA II Figure 5 0.1 100 0.1 1 10 100 TPS60403 VI = 5 V TPS60403 VI = 2 V TPS60402 VI = 5 V TPS60402 VI = 2 V TA = 25°C – Input Current – mA TPS60402, TPS60403 INPUT CURRENT vs OUTPUT CURRENT IO – Output Current – mA II Figure 6 0.2 0.4 0.6 012345 IO = 0 mA TA = 25°C – Supply Current – mA TPS60400, TPS60401 SUPPLY CURRENT vs INPUT VOLTAGE VI – Input Voltage – V IDD TPS60401 TPS60400 Figure 7 0.2 0.4 0.6 012345 IO = 0 mA TA = 25°C – Supply Current – mA TPS60402, TPS60403 SUPPLY CURRENT vs INPUT VOLTAGE VI – Input Voltage – V IDD TPS60402 TPS60403

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

VI = 1.8 V VI = 2.5 V VI = 3.3 V VI = 5 V – Output Voltage – V TPS60400 OUTPUT VOLTAGE vs OUTPUT CURRENT IO – Output Current – mA VO TA = 25°C Figure 13 0 1 02 03 04 05 06 0 VI = 1.8 V VI = 2.5 V VI = 3.3 V VI = 5 V – Output Voltage – V TPS60401 OUTPUT VOLTAGE vs OUTPUT CURRENT IO – Output Current – mA VO TA = 25°C Figure 14 0 1 02 03 04 05 06 0 VI = 1.8 V VI = 2.5 V VI = 3.3 V VI = 5 V – Output Voltage – V TPS60402 OUTPUT VOLTAGE vs OUTPUT CURRENT IO – Output Current – mA VO TA = 25°C Figure 15 0 1 02 03 04 05 06 0 VI = 1.8 V VI = 2.5 V VI = 3.3 V VI = 5 V – Output Voltage – V TPS60403 OUTPUT VOLTAGE vs OUTPUT CURRENT IO – Output Current – mA VO TA = 25°C

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

0 1 02 03 04 05 06 07 08 09 0 1 0 0 – Oscillator Frequency – kHz TPS60400 OSCILLATOR FREQUENCY vs OUTPUT CURRENT IO – Output Current – mA fosc TA = 25°C VI = 5 V VI = 3.3 V VI = 1.8 V Figure 21 – Output Voltage – mV TPS60401, TPS60402 OUTPUT VOLTAGE vs TIME VO t – Time – µs VI = 5 V IO = 30 mA TPS60402 TPS60401 50 mV/DIV 50 mV/DIV 20 µs/DIV Figure 22 – Output Voltage – mV TPS60400, TPS60403 OUTPUT VOLTAGE vs TIME VO t – Time – µs VI = 5 V IO = 30 mA TPS60403 TPS60400 100 mV/DIV 50 mV/DIV 4 µs/DIV

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001 13POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

APPLICATION INFORMATION

The most common application for these devices is a charge-pump voltage inverter (see Figure 23). This application requires only two external components; capacitors C(fly) and CO , plus a bypass capacitor, if necessary. Refer to the capacitor selection section for suggested capacitor types. TPS60400 C1 – C1+ OUTIN GND C I 1 µF C O 1 µF –5 V, Max 60 mAInput 5 V C (fly) 1 µF Figure 23. Typical Operating Circuit lower than 1 µF, the maximum output power will decrease.

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

C1 – GND C (fly) 1 µF C O 1 µF C PC I 1 µF VO (–VI) GND VI GND R P Figure 24. TPS60400 and TPS60401 With RC-Post Filter The formula refers only to the relation between output and input of the ac ripple voltages of the filter. Figure 25. LC-Post Filter Figure 25 shows a configuration with a LC-post filter to further reduce output ripple and noise.

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001 15POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Table 4. Measurement Results on the TPS60400 (Typical) Figure 26. TPS60400 as a High-Efficiency Rail Splitter bipolar power supply that is useful in battery powered systems to supply dual-rail ICs, like operational amplifiers. Moreover, the SOT23-5 package and associated components require very little board space. (fly)) connects alternately across the output capacitors C3 and CO .

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

In the circuit of Figure 27, capacitors CI, C(fly), and CO form the inverter, while C1 and C2 form the doubler. C1 and C(fly) are the flying capacitors; CO and C2 are the output capacitors. Because both the inverter and doubler use part of the charge-pump circuit, loading either output causes both outputs to decline toward GND. Make sure the sum of the currents drawn from the two outputs does not exceed 60 mA. The maximum output current at V (pos) must not exceed 30 mA. If the negative output is loaded, this current must be further reduced. TPS60400 OUT C1+ IN C1 – GND C (fly) 1 µF C O 1 µF C I 1 µF –VI GNDGND VI C 1 D 2 C 2 V(pos) II ≈ –IO + 2 × IO(POS) Figure 27. TPS60400 as Doubler/Inverter Figure 28. Doubling Inverter

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

18 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

shutting down the TPS6040x If shutdown is necessary, use the circuit in Figure 32. The output resistance of the TPS6040x will typically be 15 Ω plus two times the output resistance of the buffer. Connecting multiple buffers in parallel can reduce the output resistance of the buffer driving the IN pin. TPS60400 OUT C1+ IN C1 – GND C (fly) 1 µF C O 1 µF C I 1 µF VO (–VI) GND VI GND SDN Figure 32. Shutdown Control used for filtering the output voltage. Figure 33. GaAs Supply A 0.1-µF capacitor was selected for C(fly). By this, the output resistance of the inverter is about 52 Ω .

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

20 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

C1 – TPS60400 C1+ GND C (fly) 1 µF 5V6 C O 1 µF C I 1 µF VI GND VO – VI GND Figure 36. power dissipation As given in the data sheet, the thermal resistance of the unsoldered package is RθJA = 347°C/W. Soldered on the EVM, a typical thermal resistance of RθJA(EVM) = 180°C/W was measured. The terminal resistance can be calculated using the following equation: R /C0113JA /C0043 TJ /C0042TA P D Where: TJ is the junction temperature. TA is the ambient temperature. PD is the power that needs to be dissipated by the device. R /C0113JA /C0043 TJ /C0042TA P D The maximum power dissipation can be calculated using the following equation: PD = VI × II – VO × IO = VI(max) × (IO + I(SUPPLY)) – VO × IO The maximum power dissipation happens with maximum input voltage and maximum output current. At maximum load the supply current is 0.7 mA maximum. PD = 5 V × (60 mA + 0.7 mA) – 4.4 V × 60 mA = 40 mW With this maximum rating and the thermal resistance of the device on the EVM, the maximum temperature rise above ambient temperature can be calculated using the following equation: ∆TJ = RθJA × PD = 180°C/W × 40 mW = 7.2°C This means that the internal dissipation increases TJ by <10°C. The junction temperature of the device shall not exceed 125°C. This means the IC can easily be used at ambient temperatures up to: TA = TJ(max) – ∆TJ = 125°C/W – 10°C = 115°C

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001 21POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 All capacitors should be soldered as close as possible to the IC. A PCB layout proposal for a single-layer board is shown in Figure 37. Care has been taken to connect all capacitors as close as possible to the circuit to achieve optimized output voltage ripple performance. CFLY CIN COUT TPS60400 IN GND OUT Figure 37. Recommended PCB Layout for TPS6040x (top layer) Other inverting dc-dc converters from Texas Instruments are listed in Table 5. Table 5. Product Identification

TPS60400, TPS60401, TPS60402, TPS60403 UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER SLVS324 – JULY 2001

22 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

DBV (R-PDSO-G5) PLASTIC SMALL-OUTLINE 0,10 M0,200,95 0°–8° 0,25 0,35 0,55 Gage Plane 0,15 NOM 4073253-4/F 10/00 2,60 3,00 0,50 0,30 1,50 1,70 2,80 3,00 0,95 1,45 0,05 MIN Seating Plane NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion. D. Falls within JEDEC MO-178

Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, license, warranty or endorsement thereof. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations and notices. Representation or reproduction of this information with alteration voids all warranties provided for an associated TI product or service, is an unfair and deceptive business practice, and TI is not responsible nor liable for any such use. Resale of TI’s products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service, is an unfair and deceptive business practice, and TI is not responsible nor liable for any such use. Also see: Standard Terms and Conditions of Sale for Semiconductor Products. www.ti.com/sc/docs/stdterms.htm Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2001, Texas Instruments Incorporated