TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 50 mA, 24 V, 3.2µA Supply Current Low-Dropout Linear Regulator in SC70 Package FEATURES • • • • • • • • DESCRIPTION 24-V Maximum Input Voltage Low 3.2-µA Quiescent Current at 50 mA Stable With Any Capacitor (> 0.47 µF) 50-mA Low-Dropout Regulator Available in 2.5 V, 3.0 V, 3.3 V, 5.0 V, and Adjustable (12 V to 15 V) Minimum/Maximum Specified Current Limit 5-Pin SC70/SOT-323 (DCK) Package -40°C to 125°C Specified Junction Temperature Range 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. APPLICATIONS • • • The usual PNP pass transistor has been replaced by a PMOS pass element.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). Ultra Low Power Microcontrollers Cellular/Cordless Handsets Portable/Battery-Powered Equipment DCK PACKAGE (TOP VIEW) FB/NC 1 GND 2 NC 3 5 IN OUT OUT TPS715xx MSP430 Li− 4 IN 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. Copyright © 2001–2004, Texas Instruments Incorporated TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 AVAILABLE OPTIONS (1) TJ VOLTAGE PACKAGE PART NUMBER 2.5 V SC70/SOT-323 (DCK) TPS71525DCKR AQL 3.0 V SC70/SOT-323 (DCK) TPS71530DCKR AQM 3.3 V SC70/SOT-323 (DCK) TPS71533DCKR AQI 5.0 V SC70/SOT-323 (DCK) TPS71550DCKR T48 (Adjustable) 1.2 V-15 V SC70/SOT-323 (DCK) TPS71501DCKR ARB -40°C to 125°C (1) SYMBOL Contact the factory for other voltage options between 1.25 V and 5.85 V. ABSOLUTE MAXIMUM RATINGS over operating temperature range (unless otherwise noted) (1) (2) UNIT VIN 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 Junction temperature range, TJ -40°C to 150°C Storage temperature range, Tstg -65°C to 150°C (1) (2) 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. All voltage values are with respect to network ground terminal. DISSIPATION RATING TABLE BOARD PACKAGE RθJC°C/W RθJA°C/W DERATING FACTOR ABOVE TA = 25°C TA ≤ 25°C POWER RATING TA = 70°C POWER RATING TA = 85°C POWER RATING Low-K (1) DCK 165 395 2.52 mW/°C 250 mW 140 mW 100 mW High-K (2) DCK 165 315 3.18 mW/°C 320 mW 175 mW 130 mW (1) (2) 2 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. TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 ELECTRICAL CHARACTERISTICS over operating junction temperature range (TJ = -40°C to 125°C), VIN = VOUT(NOM) + 1 V, IOUT = 1 mA, COUT = 1 µF unless otherwise noted. Typical values are at TJ = 25°C. PARAMETER TEST CONDITIONS Input voltage (1) VIN Over VIN, IOUT, and T Ground pin current IGND TYP UNIT 2.5 24 IO = 50 mA 3 24 1.2 15 V -4.0 +4.0 % VIN + 1.0 V ≤ VIN ≤ 24 V 100 µA ≤ IOUT ≤ 50 mA 0 ≤ IOUT ≤ 50 mA, TJ = -40°C to +85°C 3.2 4.2 0 mA ≤ IOUT ≤ 50 mA 3.2 4.8 0 mA ≤ IOUT ≤ 50 mA, VIN = 24 V ∆VOUT/∆IOUT IOUT = 100 µA to 50 mA 22 Output voltage line regulation (1) ∆VOUT/∆VIN VOUT + 1 V < VIN ≤ 24 V 20 Output noise voltage Vn BW = 200 Hz to 100 kHz, COUT = 10 µF, IOUT = 50 mA Output current limit ICL VO = 0 V Power-supply ripple rejection PSRR f = 100 kHz, COUT = 10 µF Dropout voltage VIN = VOUT(NOM) - 1 V VDO IOUT = 50 mA V µA 5.8 Load regulation (1) MAX IO = 10 mA VOUT voltage range (TPS71501) VOUT accuracy (1) MIN mV 60 575 125 µVrms 750 60 415 mV mA dB 750 mV Minimum VIN = VOUT + VDO or the value shown for Input voltage in this table, whichever is greater. 3 TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION V(OUT) V(IN) Current Sense ILIM _ R1 + GND FB R2 Vref = 1.205 V Bandgap Reference FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION V(OUT) V(IN) Current Sense ILIM _ R1 + GND R2 Vref = 1.205 V Bandgap Reference R2 = 840 kΩ Table 1. Terminal Functions TERMINAL NAME NO. FIXED FB 4 DESCRIPTION ADJ. 1 Adjustable version. This terminal is used to set the output voltage. NC 1 No connection GND 2 2 Ground NC 3 3 No connection IN 4 4 Unregulated input supply. OUT 5 5 Output of the regulator, any output capacitor ≥ 0.47 µF can be used for stability. TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 3.320 3.32 VOUT − Output Voltage − V 3.305 3.300 3.295 3.290 10 20 30 40 IOUT = 50 mA 3.28 3.27 3.26 VIN = 4.3 V COUT = 1 µF −40 −25 −10 5 20 35 50 65 80 95 110 125 TJ − Free-Air Temperature − °C Figure 3. OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY OUTPUT IMPEDANCE vs FREQUENCY DROPOUT VOLTAGE vs OUTPUT CURRENT 600 VIN = 4.3 V VOUT = 3.3 V COUT = 1 µF TJ = 25°C 16 6 IOUT = 50 mA 4 3 2 14 12 V DO − Dropout Voltage − mV VIN = 4.3 V VOUT = 3.3 V COUT = 1 µF IOUT = 1 mA 10 8 6 IOUT = 1 mA 4 2 1 0 100 1k 10 k f − Frequency − Hz 100 k VIN = 3.2 V COUT = 1 µF 500 TJ = 125°C 400 TJ = 25°C 300 200 TJ = −40°C 100 IOUT = 50 mA 0 10 100 1k 10k 100k 1M 0 10 M 0 f − Frequency − Hz 10 20 30 40 IOUT − Output Current − mA Figure 4. Figure 5. Figure 6. TPS71501 DROPOUT VOLTAGE vs INPUT VOLTAGE DROPOUT VOLTAGE vs FREE-AIR TEMPERATURE POWER-SUPPLY RIPPLE REJECTION vs FREQUENCY 1 600 IOUT = 50 mA VIN = 3.2 V 0.8 V DO − Dropout Voltage − mV 0.9 TJ = 125°C 0.7 TJ = 25°C 0.6 0.5 0.4 TJ = −40°C 0.3 0.2 500 IOUT = 50 mA 400 300 200 IOUT = 10 mA 100 0.1 0 0 2.5 2 18 5 3 Figure 2. 8 7 3.5 Figure 1. Zo − Output Impedance − Ω Hz µ V/ 3.30 3.29 VIN = 4.3 V VOUT = 3.3 V IOUT = 1 µF 4 3.25 −40 −25 −10 5 20 35 50 65 80 95 110 125 TJ − Free−Air Temperature − °C 50 IO − Output Current − mA Output Spectral Noise Density − IOUT = 1 mA 3 6 9 VIN − Input Voltage − V Figure 7. 12 15 0 −40 −25 −10 5 20 35 50 65 80 95 110 125 TJ − Free-Air Temperature − °C Figure 8. PSRR − Power Supply Ripple Rejection − dB VOUT − Output Voltage − V 3.310 0 4.5 3.31 IGND − Ground Current − µ A VIN = 4.3 V COUT = 1 µF TJ = 25°C 3.315 V DO − Dropout Voltage − V QUIESCENT CURRENT vs FREE-AIR TEMPERATURE 50 100 VIN = 4.3 V VOUT = 3.3 V COUT = 10 µF TJ = 25°C 90 80 70 60 IOUT = 1 mA 50 40 30 IOUT = 50 mA 20 10 0 10 100 1k 10k 100k 1M 10 M f − Frequency − Hz Figure 9. 5 TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 TYPICAL CHARACTERISTICS (continued) VOUT = 3.3 V RL = 66 Ω COUT = 10 µF 6 VIN − Input Voltage − V VOUT − Output Voltage − V 7 5 50 0 −50 4 3 VIN 2 VOUT 1 0 0 2 4 6 8 10 12 14 t − Time − ms Figure 10. 6 VOUT = 3.3 V IOUT = 50 mA COUT = 10 µF 100 16 18 20 5.3 4.3 0 50 100 150 200 250 300 350 400 450 500 t − Time − ms Figure 11. LOAD TRANSIENT RESPONSE VOUT − Change In Output Voltage − mV IOUT − Output Current − mV LINE TRANSIENT RESPONSE VIN − Input Voltage − V VOUT − Output Voltage − mV POWER UP / POWER DOWN 8 400 200 VIN = 4.3 V VOUT = 3.3 V COUT = 10 µF 0 -200 60 40 20 0 0 100 200 300 400 500 600 700 800 900 1000 t − Time − µs Figure 12. TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 APPLICATION INFORMATION The TPS715xx family of LDO regulators has been optimized for ultra-low power applications such as the MSP430 microcontroller. Its ultralow supply current maximizes efficiency at light loads, and its high input voltage range makes it suitable for supplies such as unconditioned solar panels. VI C1 0.1 µF 4 IN OUT 5 VO 3 NC 1 NC/FB GND 0.47 µF 2 Figure 13. Typical Application Circuit (Fixed Voltage Version) 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 of the power supply as a whole. A higher-value 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. The TPS715xx requires an output capacitor connected between OUT and GND to stabilize the internal control loop. Any capacitor (including ceramic and tantalum) ≥ 0.47 µF properly stabilizes this loop. Power Dissipation and Junction Temperature To ensure reliable operation, worst-case junction temperature should not exceed 125°C. 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: T max T A P J D(max) R JA (1) where: • TJmax is the maximum allowable junction temperature. • RθJA is the thermal resistance junction-to-ambient for the package (see the Dissipation Ratings table). • TA is the ambient temperature. The regulator dissipation is calculated using: P D V V I I O O (2) 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. 7 TPS71501 TPS71525, TPS71530 TPS71533, TPS71550 www.ti.com SLVS338H – MAY 2001 – REVISED JUNE 2004 APPLICATION INFORMATION (continued) 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 1 R1 R2 (3) where: • VREF = 1.205 V typ (the internal reference voltage) 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 V V O 1 ref R2 (4) TPS71501 VI OUTPUT VOLTAGE PROGRAMMING GUIDE IN 0.1 µF OUT VO R1 FB GND 0.47 µF OUTPUT VOLTAGE R1 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 8 R2 PACKAGE OPTION ADDENDUM www.ti.com 2-Jun-2004 PACKAGING INFORMATION ORDERABLE DEVICE STATUS(1) PACKAGE TYPE PACKAGE DRAWING PINS PACKAGE QTY BQ71525DCKR ACTIVE SOP DCK 5 3000 BQ71533DCKR ACTIVE SOP DCK 5 3000 TPS71501DCKR ACTIVE SOP DCK 5 3000 TPS71525DCKR ACTIVE SOP DCK 5 3000 TPS71530DCKR ACTIVE SOP DCK 5 3000 TPS71533DCKR ACTIVE SOP DCK 5 3000 TPS71550DCKR ACTIVE SOP DCK 5 3000 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. MECHANICAL DATA MPDS025C – FEBRUARY 1997 – REVISED FEBRUARY 2002 DCK (R-PDSO-G5) PLASTIC SMALL-OUTLINE PACKAGE 0,30 0,15 0,65 5 0,10 M 4 1,40 1,10 1 0,13 NOM 2,40 1,80 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 4093553-2/D 01/02 NOTES: A. B. C. D. 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 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 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