STLQ015xx 150 mA, ultra-low quiescent current linear voltage regulator Features ■ Input voltage from 1.5 to 5.5 V ■ Very low quiescent current: – 1.0 µA (typ) at no load – 1.4 µA (typ) at 150 mA load – 1 nA (typ) in OFF mode – 200 nA max in OFF mode at 125 °C ■ Output voltage tolerance: ± 2% at 25 °C ■ 150 mA guaranteed output current ■ Wide range of output voltages: 0.8 V to 3.3 V in 100 mV steps ■ Logic-controlled electronic shutdown ■ Compatible with ceramic capacitor (COUT = 1 µF) ■ Internal current and thermal limit ■ Package: SOT666-6L ■ Temperature range: -40 °C to 125 °C SOT666 requiring very long standby time. The enable logic control function puts the STLQ015xx in shutdown mode, reducing total current consumption to 1 nA. The device also includes short-circuit constantcurrent limiting and thermal protection. Typical applications for the device are portable and battery-powered systems, electronic sensors, and microcontroller power supply. Description The STLQ015xx provides 150 mA of maximum current from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of 112 mV. The key feature of this device is its quiescent current, which is just 1.4 µA at maximum output current. The device is stable with a ceramic capacitor on the output. It offers very low quiescent current, extending battery life and making the device suitable for applications Table 1. January 2011 Device summary Part numbers Order codes Output voltages STLQ015XX25 STLQ015XG25R 2.5 V STLQ015XX28 STLQ015XG28R 2.8 V STLQ015XX30 STLQ015XG30R 3.0 V STLQ015XX31 STLQ015XG31R 3.1 V STLQ015XX33 STLQ015XG33R 3.3 V Doc ID 17285 Rev 2 1/17 www.st.com 17 Contents STLQ015xx Contents 1 STLQ015xx block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 Different output voltage versions of the STLQ015xx available on request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 Doc ID 17285 Rev 2 STLQ015xx STLQ015xx block diagram 1 STLQ015xx block diagram Figure 1. Device block diagram IN OUT ENABLE ON OFF EN Thermal Prot. Over Current R1 Vreference R2 GND Doc ID 17285 Rev 2 3/17 Pin configuration and description STLQ015xx 2 Pin configuration and description Figure 2. Pin configuration (top view) Table 2. Pin description 4/17 Pin Symbol Function 1 EN 2 GND 3 IN 4 OUT Output voltage 5 NC Not connected 6 NC Not connected Enable input. Set VEN = High to turn on the device. Set VEN = Low to turn off the device. Ground Input voltage Doc ID 17285 Rev 2 STLQ015xx Typical application 3 Typical application Figure 3. Typical application circuit Doc ID 17285 Rev 2 5/17 Maximum ratings STLQ015xx 4 Maximum ratings Table 3. Absolute maximum ratings Symbol VIN Parameter DC input voltage Value Unit -0.3 to 7 V VOUT DC output voltage - 0.3 to VIN + 0.3 V VEN Enable input voltage - 0.3 to VIN + 0.3 V IOUT Output current Internally limited mA ±3 kV ± 300 V Internally limited mW -65 to 150 °C 150 °C Human Body Model ESD Machine Model PD Power dissipation TSTG Storage temperature range TOP Max junction temperature Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. All values are referred to GND. Table 4. Thermal data Symbol 6/17 Parameter SOT666 Unit RthJA Thermal resistance junction-ambient 132 °C/W RthJC Thermal resistance junction-case 56 °C/W Doc ID 17285 Rev 2 STLQ015xx 5 Electrical characteristics Electrical characteristics TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless otherwise specified. Table 5. Symbol VIN VOUT ΔVOUT- Electrical characteristics Parameter Operating input voltage VOUT accuracy eN SVR IQ Unit 1.5 5.5 -40°C < TJ < 125°C, IOUT = 150mA 1.55 5.5 IOUT = 1mA -2 2 % IOUT = 1mA, VOUT < 1V -20 +20 mV IOUT = 1mA, -40°C < TJ < 125°C -3 3 % V ±0.01 %/V Static load regulation IOUT = 1mA to 150mA ±0.002 %/mA Dropout voltage (1) IOUT = 150mA 112 mV IOUT = 150mA, -40°C < TJ < 125°C Output noise voltage Supply voltage rejection VOUT = 0.8V Quiescent current 300 10kHz to 100kHz, IOUT = 10mA, VOUT = 0.8V 75 VIN = VOUTNOM + 1V +/-VRIPPLE VRIPPLE = 0.1V, Freq. = 1kHz IOUT = 10mA 40 VIN = VOUTNOM + 1V +/-VRIPPLE VRIPPLE = 0.1V, Freq.=10kHz IOUT = 1mA 30 VIN = VOUTNOM + 1V +/-VRIPPLE VRIPPLE = 0.1V, Freq.=100kHz IOUT = 1mA 15 IOUT = 0 1.0 1.7 IOUT = 0 to 150mA, -40°C < TJ < 125°C 1.7 2.4 1 200 Shutdown current (2) VIN input current in OFF mode: VEN = GND, -40°C < TJ < 125°C ISC Short circuit current RL = 0 Enable input logic low VIN = 1.5V to 5.5V Enable input logic high VIN = 1.5V to 5.5V IEN Enable pin input current VEN = 5.5V TON Turn-on time (3) VOUT = 0.8 V, IOUT = 150 mA TSHDN Max. IOUT = 0 IOFF VEN Typ. VOUT +1V ≤ VIN ≤ 5.5V, IOUT = 1mA LOAD VDROP Min. Static line regulation LINE ΔVOUT- Test conditions µVRMS dB µA 250 350 nA mA 0.4 0.7 V V 1 160 Thermal shutdown 170 Hysteresis 180 200 nA µs °C Doc ID 17285 Rev 2 7/17 Electrical characteristics Table 5. STLQ015xx Electrical characteristics (continued) Symbol Parameter Output capacitor COUT Test conditions Capacitance (see typical performance characteristics for stability) ESR Min. Typ. Max. Unit 0.47 10 µF 0.056 6 Ω 1. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This specification does not apply for output voltages below 1.5 V 2. During shutdown and at no load, P-channel leakage current flowing through the internal resistor divider determines the increase of VOUT 3. Turn-on time is the time measured between the enable input just exceeding VEN high value and the output voltage just reaching 95% of its nominal value 8/17 Doc ID 17285 Rev 2 STLQ015xx Typical performance characteristics 6 Typical performance characteristics Figure 4. Output voltage vs. temperature Figure 5. 1.00% Output voltage vs. input voltage 1.0 0.80% IOUT = 1 mA 0.8 T= -40°C T= +25°C 0.40% 0.20% VOUT [V] VOUT variation [%] 0.60% 0.00% T= 125°C 0.6 0.4 -0.20% -0.40% 0.2 -0.60% IOUT = 150 mA, VOUT = 0.8 V -0.80% -1.00% -40 0.0 -20 0 20 40 60 80 0.3 100 120 140 0.5 0.7 0.9 Figure 6. 1.1 1.3 1.5 1.7 1.9 VIN [V] Temperature [°C] Output voltage vs. input voltage Figure 7. Dropout voltage vs. temperature 0.30 3.6 VO = 1.5 V VO = 3.3 V 3.2 0.25 2.8 Vdrop [V] VOUT [V] 2.4 2.0 T= -40°C 1.6 T= +25°C 1.2 0.20 0.15 T= 125°C 0.8 0.10 0.4 IOUT = 150 mA IOUT = 150 mA, VOUT = 3.3 V 0.05 0.0 -40 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -20 0 VIN [V] Figure 8. 40 60 80 100 120 140 Temperature [°C] Dropout voltage vs. output current Figure 9. Quiescent current vs. temperature 2.00 0.30 IO = 0 mA VIN = 1.5 V, VO = 0.8 V 1.80 VO = 1.5 V 0.25 VIN = 4.3 V, VO = 3.3 V 1.60 VO = 3.3 V 1.40 Iq [µA] 0.20 Vdrop [V] 20 0.15 1.20 1.00 0.80 0.10 0.60 0.40 0.05 0.20 0.00 0.00 0 0.05 0.1 0.15 0.2 IOUT [A] -40 -20 0 20 40 60 80 100 120 140 Temperature [°C] Doc ID 17285 Rev 2 9/17 Typical performance characteristics STLQ015xx Figure 10. Supply voltage rejection vs. frequency Figure 11. Supply voltage rejection vs. IOUT 70 Supply Voltage Rejection [db] 50 Supply Voltage rejection [dB] 60 Vout=0.8V Vout=3.3V 50 40 30 40 30 20 VIN = 1.5, VO = 0.8 V f = 1 kHz VIN = 4.3 V, VO = 3.3 V 10 20 0 0 10 100 1000 f [Hz] 10000 20 40 60 100000 80 100 120 140 160 IOUT [mA] Figure 12. Quiescent current vs. input voltage Figure 13. Quiescent current vs. output current 2.00 2.40 2.20 2.00 VO = 0.8 V 1.80 VO = 3.3 V 1.60 1.80 1.40 1.40 Iq [µA] Iq [µA] 1.60 1.20 1.00 1.20 1.00 VIN = 4.3 V, VO = 3.3 V 0.80 0.80 VIN = 1.5 V, VO = 0.8 V 0.60 0.60 TJ = 25 °C IO = 1 mA 0.40 0.40 0.20 0.20 0.00 0.00 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 20 40 VIN [V] 60 80 100 120 140 160 IOUT [mA] Figure 14. Output noise voltage vs. frequency Figure 15. COUT stability region 18.0 8.00 16.0 7.00 ESR at 100 kHz [ohm] eN [uV/SQRT(Hz)] 14.0 12.0 3V3 Iload= 10mA 10.0 0V8 Iload= 10mA 8.0 6.0 6.00 5.00 ESR MAX 4.00 ESR MIN 3.00 2.00 4.0 1.00 2.0 0.00 0.0 0.0 10 10/17 100 f [Hz] 1000 10000 100000 Doc ID 17285 Rev 2 1.0 2.0 3.0 4.0 5.0 6.0 COUT [µF] 7.0 8.0 9.0 10.0 STLQ015xx Typical performance characteristics Figure 16. Startup transient Figure 17. Enable transient VIN VEN VOUT VOUT VIN from 0 to 1.5 V, VEN tied to VIN, No Load COUT = 1 µF VIN = 1.5 V; VEN from 0 to 2 V, No Load, T = 25 °C Doc ID 17285 Rev 2 11/17 Package mechanical data 7 STLQ015xx Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Table 6. SOT666 mechanical data mm. inch. Dim. Min. Max. Min. Typ. Max. A 0.45 0.60 0.018 0.024 A3 0.08 0.18 0.005 0.007 b 0.17 0.34 0.007 0.013 b1 0.19 0.34 0.007 D 1.50 1.70 0.059 0.067 E 1.50 1.70 0.059 0.067 E1 1.10 1.30 0.043 0.051 0.27 0.011 e 0.50 0.020 L1 0.19 0.007 L2 L3 12/17 Typ. 0.10 0.30 0.10 0.004 0.012 0.004 Doc ID 17285 Rev 2 0.013 STLQ015xx Package mechanical data Figure 18. Drawing dimension SOT666 7366479 Doc ID 17285 Rev 2 13/17 Package mechanical data STLQ015xx Figure 19. SOT666 footprint recommended data (mm.) AM09302v1 14/17 Doc ID 17285 Rev 2 STLQ015xx Different output voltage versions of the STLQ015xx available on request 8 Different output voltage versions of the STLQ015xx available on request Table 7. Options available on request Order codes Output voltages STLQ015XG12R 1.2 V STLQ015XG18R 1.8 V Doc ID 17285 Rev 2 15/17 Revision history STLQ015xx 9 Revision history Table 8. Document revision history Date Revision 23-Mar-2010 1 Initial release. 20-Jan-2011 2 Modified Table 6 on page 12 and Figure 18 on page 13. Added Figure 19 on page 14. 16/17 Changes Doc ID 17285 Rev 2 STLQ015xx Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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