TPS71525 TPS71533 TPS71501 Actual Size (2,15 mm x 2,3 mm) SLVS338C – MAY 2001 – REVISED APRIL 2002 HIGH INPUT VOLTAGE, MICROPOWER SC70/SOT-323 PACKAGED 50-mA LDO LINEAR REGULATORS FEATURES D 50-mA Low-Dropout Regulator D Available in 2.5 V, 3.3 V, and Adjustable D 24-V Maximum Input Voltage D Low 3.2-µA Quiescent Current at 50 mA D 5-Pin SC70/SOT-323 (DCK) Package D Stable With Any Capacitor (>0.47 µF) D Over Current Limitation D –40°C to 125°C Operating Junction APPLICATIONS D Battery Management D Microcontroller D PDAs and Notebooks DCK PACKAGE (TOP VIEW) Temperature Range DESCRIPTION The TPS715xx low-dropout (LDO) voltage regulators offer the benefits of high input voltage, low-dropout voltage, low-power operation, and miniaturized packaging. The devices, which operate over an input range of 2.5 V to 24 V, are stable with any capacitor (>0.47 µF). The low dropout voltage and low quiescent current allow operations at extremely low power levels. Therefore, the devices are ideal for powering battery management ICs. Specifically, since the devices are enabled as soon as the applied voltage reaches the minimum input voltage, the output is quickly available to power continuously operating battery charging ICs. FB/NC 1 GND 2 NC 3 5 OUT 4 IN The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the low dropout voltage, typically 415 mV at 50 mA of load current, is directly proportional to the load current. The low quiescent current (3.2 µA typically) is stable over the entire range of output load current (0 mA to 50 mA). AVAILABLE OPTIONS† TJ 40°C to 125°C –40°C VOLTAGE PACKAGE PART NUMBER 25V 2.5 SC70/SOT 323 SC70/SOT-323 (DCK) TPS71525DCKR 33V 3.3 SC70/SOT-323 SC70/SOT 323 (DCK) TPS71533DCKR (Adjustable) 1.2 V–15 V SC70/SOT 323 SC70/SOT-323 (DCK) TPS71501DCKR bq71525DCKR bq71533DCKR bq71501DCKR SYMBOL AQL AQI ARB † Contact the factory for other voltage options between 1.25 V and 5.85 V. 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. Copyright 2002, Texas Instruments Incorporated This document contains information on products in more than one phase of development. The status of each device is indicated on the page(s) specifying its electrical characteristics. www.ti.com 1 TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)Ĕ Input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 24 V Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV ESD rating, CDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 V Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 125°C Operating ambient temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 85°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 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. NOTE 1: All voltage values are with respect to network ground terminal. DISSIPATION RATING TABLE BOARD PACKAGE RθJC °C/W Low K‡ High K§ DCK 165.39 RθJA °C/W DERATING FACTOR ABOVE TA = 25°C TA ≤ 25°C POWER RATING TA = 70°C POWER RATING TA = 85°C POWER RATING 396.24 2.52 mW/°C 252 mW 139 mW 101 mW DCK 165.39 314.74 3.18 mW/°C 318 mW 175 mW 127 mW ‡ The JEDEC Low K (1s) board design used to derive this data was a 3 inch x 3 inch, two layer board with 2 ounce copper traces on top of the board. § The JEDEC High K (2s2p) board design used to derive this data was a 3 inch x 3 inch, multilayer board with 1 ounce internal power and ground planes and 2 ounce copper traces on top and bottom of the board. recommended operating conditions MIN Input voltage voltage, VI (see Note 2) IO = 10 mA IO = 50 mA Continuous output current, IO (see Note 3) NOM MAX 2.5 24 3 24 0 50 UNIT V mA Operating junction temperature, TJ –40 125 °C NOTES: 2. To calculate the minimum input voltage for your maximum output current, use the following formula: VI(min) = VO(max) + VDO (max load) 3. Continuous output current is limited by internal protection circuitry, but it is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time. 2 www.ti.com TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 electrical characteristics over recommended operating free-air temperature range, VI = VO(typ) + 1 V, IO = 1 mA, Co = 1 µF, (unless otherwise noted) PARAMETER Out ut voltage (100 µA to 50 Output mA Load) (see Note 4) TEST CONDITIONS TPS71501 1.2 V ≤ VO ≤ 15 V 1.2 V ≤ VO ≤ 15 V TPS71525 TJ = 25°C, TJ = –40°C to 125°C, 3.5 V < VI < 24 V TPS71533 TJ = 25°C, TJ = –40°C to 125°C, 4.3 V < VI < 24 V TJ = 25°C, TJ = –40°C to 85°C, 0 < IO < 50 mA Quiescent current (GND current) Load regulation Out ut voltage line regulation (∆VO/VO) Output (see Note 4) Output noise voltage Output current limit Power supply ripple rejection Dropout voltage (see Note 5) MIN TJ = 25°C, TJ = –40°C to 125°C, TJ = –40°C to 125°C, TJ = –40°C to 125°C, 3.5 V < VI < 24 V 4.3 V < VI < 24 V TYP 0.96 VO MAX 1.04 VO 2.5 2.4 2.6 3.432 3.2 4.2 4.8 IO = 50 mA, VI = 24 V IO = 100 µA to 50 mA VO + 1 V < VI ≤ 24 V TJ = –40°C to 125°C, TJ = 25°C, Co = 10 µF, VO + 1 V < VI ≤ 24 V BW = 200 Hz to 100 kHz, IO = 50 mA VO = 0 V, TJ = 25°C, See Note 4 f = 100 kHz, TJ = 25°C, TJ = –40°C to 125°C, IO = 50 mA IO = 50 mA µA A 5.8 22 mV 20 60 mV µVrms 575 125 Co = 10 µF V 3.3 3.168 IO = 50 mA IO = 50 mA TJ = 25°C, TJ = 25°C, UNIT 750 60 mA dB 415 750 mV NOTES: 4. The maximum IN voltage is 24 V. There is no minimum output current and the maximum output current is 50 mA. 5. IN voltage equals VO(typ) –100 mV; The TPS71533 input voltage is set to 3.2 V. www.ti.com 3 TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 functional block diagram – adjustable version VOUT VIN Current Sense ILIM _ R1 + GND FB Bandgap Reference VIN R2 Vref = 1.205 V functional block diagram – fixed version VOUT VIN Current Sense ILIM _ R1 + GND Bandgap Reference VIN R2 Vref = 1.205 V Terminal Functions TERMINAL NAME NO. FB 1 GND 2 IN 4 NC 1 NC 3 OUT 5 4 I/O DESCRIPTION This terminal is the feedback input voltage for the adjustable device. Ground I The IN terminal is the power supply input to the device. No connection for fixed options devices No connection O The OUT terminal provides the regulated output voltage of the device. www.ti.com TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 4.5 3.32 3.315 3.31 3.310 3.305 3.300 3.295 IO = 1 mA 3.30 IO = 50 mA 3.29 3.28 3.27 3.290 0 10 20 30 40 2 –40 –25 –10 5 Figure 3 DROPOUT VOLTAGE vs OUTPUT CURRENT 600 18 IO = 1 mA 16 6 5 VI = 4.3 V VO = 3.3 V Co = 1 µF TJ = 25°C IO = 50 mA 4 3 2 14 12 10 8 6 IO = 1 mA 4 2 1 0 0 100 1k 10 k f – Frequency – Hz 100 k 100 1k TPS791501 600 1 IO = 200 mA V DO – Dropout Voltage – mV 0.9 TJ = 125°C 0.7 TJ = 25°C 0.5 0.4 TJ = –40°C 0.3 0.2 0 3 6 9 VI – Input Voltage – V Figure 7 200 TJ = –40°C 100 0 10k 100k 1M 10 M 500 DROPOUT VOLTAGE vs FREE-AIR TEMPERATURE VI = 3.2 V Co = 1 µF IO = 50 mA 400 300 200 IO = 10 mA 100 0.1 0 TJ = 25°C 300 0 10 20 30 40 IO – Output Current – mA Figure 5 DROPOUT VOLTAGE vs INPUT VOLTAGE 0.6 TJ = 125°C 400 f – Frequency – Hz Figure 4 0.8 VI = 3.2 V CO = 1 µF 500 IO = 50 mA 10 12 15 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 TA – Free-Air Temperature – °C Figure 8 www.ti.com 50 Figure 6 POWER SUPPLY RIPPLE REJECTION vs FREQUENCY PSRR – Power Supply Ripple Rejection – dB 7 VI = 4.3 V VO = 3.3 V Co = 1 µF V DO – Dropout Voltage – mV 8 20 35 50 65 80 95 110 125 TA – Free-Air Temperature – °C OUTPUT IMPEDANCE vs FREQUENCY Zo – Output Impedance –Ω Hz OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY µ V/ 2.5 Figure 2 Figure 1 Output Spectral Noise Density – 3 3.25 –40 –25 –10 5 20 35 50 65 80 95 110 125 TA – Free–Air Temperature – °C 50 IO – Output Current – mA V DO – Dropout Voltage – V 3.5 VI = 4.3 V Co = 1 µF 3.26 VI = 4.3 V VO = 3.3 V Co = 1 µF 4 Quiesecent Current – µ A VI = 4.3 V Co = 1 µF TJ = 25°C V O – Output Voltage – V V O – Output Voltage – V 3.320 QUIESCENT CURRENT vs FREE-AIR TEMPERATURE 100 VI = 4.3 V VO = 3.3 V Co = 10 µF TJ = 25°C 90 80 70 60 IO = 1 mA 50 40 30 IO = 50 mA 20 10 0 10 100 1k 10k 100k 1M 10 M f – Frequency – Hz Figure 9 5 TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 POWER UP / POWER DOWN 8 VO = 3.3 V RL = 66 Ω 6 VO = 3.3 V IO = 50 mA Co = 10 µF 100 50 0 4 3 VI 2 VO 1 0 0 2 4 6 8 10 12 14 t – Time – ms 16 18 20 –50 LOAD TRANSIENT RESPONSE VI = 4.3 V VO = 3.3 V Co = 10 µF 400 200 0 -200 5.3 4.3 0 50 100 150 200 250 300 350 400 450 500 ∆ V – Change In O Output Voltage – mV V O 5 V – Input Voltage – V I V – Output Voltage – V O V – Input Voltage – V I 7 LINE TRANSIENT RESPONSE I O – Output Current – mA – Output Voltage – mV TYPICAL CHARACTERISTICS 60 40 20 0 Figure 10 0 100 200 300 400 500 600 700 800 900 100 t – Time – µs t – Time – ms Figure 11 Figure 12 APPLICATION INFORMATION The TPS715xx family of LDO regulators has been optimized for use with battery management ICs. After the minimum input voltage requirement is met, it is always enabled. The device’s maximum input voltage is 24 V. It has a dropout voltage of 415 mV at 50 mA, and its quiescent current is 3.2 µA typically. A typical application circuit is shown in Figure 13. 4 VI C1 0.1 µF IN OUT 3 5 VO NC 1 + NC/FB GND 0.47 µF 2 Figure 13. Typical Application Circuit external capacitor requirements Although not required, a 0.047-µF or larger input bypass capacitor, connected between IN and GND and located close to the device, is recommended to improve transient response and noise rejection. A higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated and the device is located several inches from the power source. Like all low-dropout regulators, the TPS715xx requires an output capacitor connected between OUT and GND to stabilize the internal control loop. The minimum recommended capacitance is 0.47 µF. Any 0.47µ-F capacitor is suitable. Capacitor values larger than 0.47 µF are acceptable. 6 www.ti.com TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 APPLICATION INFORMATION power dissipation and junction temperature Specified regulator operation is assured to a junction temperature of 125°C; restrict the maximum junction temperature to 125°C under normal operating conditions. This restriction limits the power dissipation the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or equal to PD(max). The maximum-power-dissipation limit is determined using the following equation: P D(max) T max * T A + J R qJA Where: TJmax is the maximum allowable junction temperature. RθJA is the thermal resistance junction-to-ambient for the package (see the Dissipation Rating Table). TA is the ambient temperature. The regulator dissipation is calculated using: P D ǒ Ǔ + V *V I O I O Power dissipation resulting from quiescent current is negligible. regulator protection The TPS715xx PMOS-pass transistor has a built-in back diode that conducts reverse current when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally limited. If extended reverse voltage operation is anticipated, external limiting might be appropriate. The TPS715xx features internal current limiting. During normal operation, the TPS715xx limits output current to approximately 500 mA. When current limiting engages, the output voltage scales back linearly until the overcurrent condition ends. Take care not to exceed the power dissipation ratings of the package. programming the TPS71501 adjustable LDO regulator The output voltage of the TPS71501 adjustable regulator is programmed using an external resistor divider as shown in Figure 14. The output voltage is calculated using: V O +V ref ǒ1 ) R1 Ǔ R2 (3) Where: Vref = TBD V typ (the internal reference voltage) www.ti.com 7 TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 APPLICATION INFORMATION programming the TPS71501 adjustable LDO regulator (continued) Resistors R1 and R2 should be chosen for approximately 1.5-µA divider current. Lower value resistors can be used for improved noise performance, but the solution consumes more power. Higher resistor values should be avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially increases/decreases the feedback voltage and thus erroneously decreases/increases VO. The recommended design procedure is to choose R2 = 1 MΩ to set the divider current at 1.5 µA, and then calculate R1 using: R1 + ǒ V V Ǔ O *1 ref (4) R2 TPS71501 VI 0.1 µF OUTPUT VOLTAGE PROGRAMMING GUIDE IN VO OUT R1 0.47 µF FB GND OUTPUT VOLTAGE R1 R2 1.8 V 0.499 MΩ 1 MΩ 2.8 V 1.33 MΩ 1 MΩ 5.0 V 3.16 MΩ 1 MΩ R2 Figure 14. TPS71501 Adjustable LDO Regulator Programming battery management application One application for which this device is particularly suited is providing a regulated voltage from a much larger input voltage, as is often the case of ICs used in portable battery-powered devices. Many of the battery management ICs currently on the market monitor battery voltages above 20 V. However, the IC’s internal circuitry and peripheral equipment, like an LED’s, generally need a lower power bus for operation. Some of the battery management ICs have internal LDO regulator controllers that require five or more external components in order to provide a regulated output voltage. The TPS715xx family has a maximum input voltage rating of 24 V, provides up to 50 mA of output current, and requires only one external component. Therefore, using one of the TPS715xx regulators to power battery management ICs is a much simpler, more compact, and less expensive solution than using onboard LDO regulator controllers. In addition, the TPS715xx family uses only 3.2 µA of quiescent current and does not significantly decrease battery life while the device is inactive. TI’s bq2060 gas gauge IC was chosen to demonstrate the use of the TPS71533. The bq2060 battery management IC requires a regulated 3.3 V for normal operation. The bq2060 has a regulator controller output (REG) that, when used in conjunction with an external JFET (Q2), a bipolar transistor (Q1), two capacitors (C1 and C2), and one resistor (R1), forms a 3.3-V output linear regulator as shown in Figure 15. 8 www.ti.com TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 APPLICATION INFORMATION 3 BAT+ 2 1 Q1 MMBT3904 1 R1 VCC 2 1 kΩ 1 C1 Q2 SST113 D U1 1 G S 1 R2 100 kΩ S1 24 Device 1 R3 2 HDQ16 ESCL 3 ESDA VCELL4 RBI RBG VCELL3 4 5 2 31 2 0.1 µF 2 10 kΩ 1 R4 2 6 7 VOUT VCC 8 VSS 9 DISP 10 LED1 11 LED2 12 LED3 13 14 LED4 LED5 10 kΩ SMBC SMBD 28 27 26 25 24 VCELL2 23 VCELL1 22 SR1 21 SR2 20 SRC 19 TS 18 THon 17 CVon 16 CFC 15 DFC BQ2060 1 U2 1 2 3 SCL VSS SDA WP VCC C2 5 D1 Color 4 D2 Color 24LC01 D3 Color D4 Color D5 Color BAT– 2 .001 µF R5 330 Ω R6 330 Ω R7 330 Ω R8 330 Ω R9 330 Ω 1 2 R10 0.030 W Figure 15. bq2060 Powered With Internal LDO Controller www.ti.com 9 TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 APPLICATION INFORMATION However, with five external components, this regulator is more complex and costly than using a separate LDO regulator. Figure 16 shows the TPS71533 and its external output capacitor (C1) providing the regulated 3.3 V to the bq2060. U2 TPS71533 1 OUT 2 5 GND 3 IN 4 BAT+ 1 C1 1 R1 2 U1 0.47 µF 1 100 kΩ S1 24 Device 1 R2 3 ESDA VCELL4 RBI RBG VCELL3 4 5 2 31 2 HDQ16 ESCL 2 10 kΩ 1 R3 2 6 7 VOUT VCC 8 VSS 9 DISP 10 LED1 11 LED2 12 LED3 13 14 LED4 LED5 10 kΩ SMBC SMBD U3 2 3 SCL VSS SDA WP VCC 5 D1 Green 4 24LC01 D2 Green D3 Green D4 Green D5 Green BAT– R4 470 Ω R5 470 Ω R6 470 Ω R7 470 Ω R8 470 Ω 1 2 R9 0.030 W Figure 16. bq2060 Powered With TPS71533 10 www.ti.com 27 26 25 24 VCELL2 23 VCELL1 22 SR1 21 SR2 20 SRC 19 TS 18 THon 17 CVon 16 CFC 15 DFC BQ2060 1 28 TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 APPLICATION INFORMATION In Figure 16, the bq2060 is configured to monitor 4 Li-Ion batteries in series totaling 16.8 V. During either battery charging or discharging, the maximum current that the bq2060 requires from the TPS71533 occurs when the user presses the push button (S1) and potentially activates all five LEDs, indicating a fully charged battery. The LEDs require 3 mA each and remain on for 4 seconds and then off for 2 seconds. Therefore, the bq2060 potentially requires a total of 15 mA for 67% duty cycle and thus the total power dissipated by the TPS71533 would not exceed 136 mW [(16.8 V – 3.3 V) x 15 mA x 67%]. Therefore, power dissipation is not a concern in this application. When the LEDs are not activated, the bq2060 only requires approximately 200-µA quiescent current. For more information on the operation of the bq2060, refer to the data sheet (TI literature number SLUS035). An evaluation module with a similar configuration to the one shown in Figure 16 is also available (TI literature number SLUU063). www.ti.com 11 TPS71525 TPS71533 TPS71501 SLVS338C – MAY 2001 – REVISED APRIL 2002 MECHANICAL DATA DCK (R-PDSO-G5) PLASTIC SMALL-OUTLINE 0,30 0,15 0,65 5 0,10 M 4 1,40 1,10 1 0,13 NOM 2,30 1,90 3 Gage Plane 2,15 1,85 0,15 0°–8° 0,46 0,26 Seating Plane 1,10 0,80 0,10 0,00 0,10 4093553/B 06/99 NOTES: A. B. C. D. 12 All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion. Falls within JEDEC MO-203 www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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