LDCL015 150 mA capless ultra low drop linear regulator ICs Datasheet - production data Description SOT23-5L Features • No input or output capacitor required • Input voltage from 1.8 V to 5.5 V • Very low drop: 50 mV at 100 mA load • ± 2% output voltage accuracy • Output voltage tolerance over temperature: ± 3% The LDCL015 provides 150 mA of maximum current from an input voltage ranging from 1.8 V to 5.5 V, with a typical dropout voltage of 50 mV. It is stable with no input or output capacitor. Low quiescent current, low noise and capless operation make it suitable for low power batterypowered applications and allows the reduction of board size. Typical power supply rejection ratio is 52 dB at low frequencies, and starts to roll off at 10 kHz. The Enable logic control function puts the LDCL015 in shutdown mode, reducing the total current consumption to less than 1 µA. The device also includes short-circuit constant current limit and thermal protection. Typical applications are mobile phones, personal digital assistants and similar battery-powered systems. • Low noise • 150 mA guaranteed output current • Available in fixed and adjustable output voltages, from 0.8 V in 100 mV steps • Internal current and thermal limit • Operating temperature range: - 40 °C to 125 °C • SOT23 5-lead package Applications • Space-sensitive applications • Battery-powered equipment • Cordless and mobile phones • Industrial and medical equipment • Portable equipment Table 1. Device summary Markings Order codes Output voltages CL33 LDCL015M33R 3.3 V CLAD LDCL015MR Adjustable from 0.8 May 2014 This is information on a product in full production. DocID022166 Rev 3 1/17 www.st.com Contents LDCL015 Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.1 General operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 7.2 Thermal and short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 7.3 Output voltage setting for ADJ version . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 7.4 Enable pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 DocID022166 Rev 3 LDCL015 1 Block diagram Block diagram Figure 1. LDCL015 block diagram DocID022166 Rev 3 3/17 17 Pin configuration 2 LDCL015 Pin configuration Figure 2. Pin connections (top view) Table 2. Pin description 4/17 Pin n° Symbol 1 VIN 2 GND 3 EN 4 ADJ/NC 5 VOUT Name and function Input voltage Ground Enable pin. The device is in OFF state when this pin is pulled low Feedback pin for adjustable version.Not connected on fixed version Output voltage DocID022166 Rev 3 LDCL015 3 Typical application Typical application Figure 3. Typical application schematic - adjustable version OUT IN COUT CIN R1 LDCL015 EN ADJ GND ON R2 OFF AM09360v1 Figure 4. Typical application schematic - fixed VOUT version OUT IN COUT CIN LDCL015 EN ON GND OFF AM09361v1 Note: 1 R1 and R2 are calculated according to the following formula: R1 = R2 x (VOUT/VADJ-1). 2 CIN and COUT are optional. DocID022166 Rev 3 5/17 17 Maximum ratings 4 LDCL015 Maximum ratings Table 3. Absolute maximum ratings Symbol Parameter Input supply voltage VIN Value Unit -0.3 to +7 V VOUT Output voltage -0.3 to VIN +0.3 V IOUT Output current Internally limited A Enable and feedback pin voltage -0.3 to +VIN +0.3 V Power dissipation Internally limited W EN, ADJ PD Machine model ±300 Human body model ±3000 ESD V TJ-OP Operating junction temperature -40 to 125 °C TJ-MAX Maximum junction temperature 150 °C -65 to 150 °C TSTG Note: Storage temperature Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 4. Thermal data Symbol 6/17 Parameter Value Unit RthJC Thermal resistance junction-case 81 °C/W RthJA Thermal resistance junction-ambient 255 °C/W DocID022166 Rev 3 LDCL015 5 Electrical characteristics Electrical characteristics TJ = 25 °C, VIN = VOUT + 0.5 V; VOUT = 1.6 V; CIN = COUT = 100 nF; IOUT =1 mA; VEN=VIN. Table 5. Electrical characteristics Symbol Parameter VIN Operating input voltage range VOUT (1) Output voltage accuracy Test conditions Min. Max. Unit 1.8 5.5 V TJ=25°C -2.0 2.0 -40°C<TJ<125°C -3.0 3.0 % Reference voltage for adjustable version VREF ΔVOUT%/ΔI -40°C<TJ<125°C Adj. current 0<VADJ<5.5V eN SVR IQ -3.0 3.0 % -1 1 µA 0.05 %/V Static load regulation 1mA<IOUT<150mA;TJ=25°C 0.003 %/mA Dropout voltage (2) VOUT=1.6V; IOUT=100mA; -40°C<TJ<125°C 50 Output noise voltage 10 Hz to 100k Hz; IO = 10 mA VOUT=1V 40 VIN = VOUT+1V+VRIPPLE VRIPPLE-PP = 0.5V Freq.=1kHz; IOUT = 10mA 52 VIN = VOUT+1V+VRIPPLE VRIPPLE-PP = 0.5V Freq.=10kHz; IOUT = 10mA 51 0<IOUT <150mA; -40°C<TJ<125°C 120 Supply voltage rejection Quiescent current (2) µVRMS 160 µA VOUT=0V Enable Input logic low Enable input logic high 1.8V<VIN<5.5V, -40°C<TJ<125°C IEN Enable pin input current VEN=VIN; 1.8V<VIN<5.5V 0.1 TON Turn-on time (3) VOUT=0.8V 300 TSHDN mV 1 Short-circuit current (2) VEN 100 dB Shutdown Mode ISC V VOUT+0.5V<VIN<5.5V; TJ=25°C OUT VDROP 0.8 Reference accuracy for adjustable version ΔVOUT%/Δ Static line regulation VIN Typ. 220 mA 0.3 V 1.0 Thermal shutdown 170 Hysteresis 150 100 nA µs °C 1. Minimum VIN = VOUT + V DROP or 1.8 V, whichever is greater. 2. 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 nominal output voltages below 1.6 V. 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. DocID022166 Rev 3 7/17 17 Typical performance characteristics 6 LDCL015 Typical performance characteristics Figure 5. Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 1 mA) 0.86 VIN = 3.8 V, IOUT = 1 mA VIN = 2 V, IOUT = 1 mA 0.85 0.84 0.83 0.82 VOUT [V] VOUT [V] 3.44 3.42 3.4 3.38 3.36 3.34 3.32 3.3 3.28 3.26 3.24 3.22 3.2 3.18 3.16 Figure 6. Output voltage vs. temperature (VOUT = 0.8 V, IOUT = 1 mA) 0.81 0.8 0.79 0.78 0.77 0.76 -50 -25 0 25 50 75 100 125 [email protected] V 0.75 VOUT = 3.3 V 0.74 -50 150 -25 0 25 T [°C] Figure 7. Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 150 mA) 3.44 3.42 3.4 3.38 3.36 3.34 3.32 3.3 3.28 3.26 3.24 3.22 3.2 3.18 3.16 VOUT [V] VOUT [V] VOUT = 3.3 V -25 0 25 50 75 100 125 0.86 0.85 0.84 0.83 0.82 0.81 0.8 0.79 0.78 0.77 0.76 0.75 0.74 125 150 [email protected] V -50 150 -25 0 25 50 75 100 125 150 T [°C] Figure 9. Output voltage vs. input voltage (VOUT = 0.8 V) Figure 10. Output voltage vs. input voltage (VOUT = 3.3 V) 3.5 0.9 0.8 3 0.7 2.5 0.6 0.5 VEN = VIN; VIN = from 0 V to 5.5 V; 0.4 IOUT = 1 mA; CIN = COUT = 0.1 µF 0.3 VOUT [V] VOUT [V] 100 VIN = 2 V, IOUT = 150 mA T [°C] VEN = VIN; VIN = from 0 V to 5.5 V; 2 IOUT = 1 mA; CIN = COUT = 0.1 µF 1.5 1 0.2 [email protected] V 0.1 VOUT = 3.3 V 0.5 0 0 0 1 2 3 4 5 6 0 VIN [V] 8/17 75 Figure 8. Output voltage vs. temperature (VOUT = 0.8 V, IOUT = 1 mA) VIN = 3.8 V, IOUT = 150 mA -50 50 T [°C] 1 2 3 VIN [V] DocID022166 Rev 3 4 5 6 LDCL015 Typical performance characteristics Figure 11. Dropout voltage vs. temperature Figure 12. SVR vs. frequency (COUT = 0.1 µF) 300 70 VEN = VIN; IOUT = 150 mA 250 60 55 200 50 SVR [dB] Vdropout [mV] CIN = COUT = 0.1 µF, IOUT = 10 mA 65 150 100 45 40 35 30 25 50 20 VOUT = 3.3 V [email protected] V 15 0 10 -75 -50 -25 0 25 50 75 100 125 150 0.1 1 10 1000 Figure 14. Noise voltage vs. COUT CIN = 0.1 µF, no COUT, IOUT =10 mA [email protected] V 1RLVHYROWDJH 9UPV9 SVR [dB] Figure 13. SVR vs. frequency, no COUT 70 65 60 55 50 45 40 35 30 25 20 15 10 100 f [kHz] T [°C] 9287 9 0.1 1 10 100 1000 &287 Q) f [kHz] Figure 15. Line transient (rising), no COUT Figure 16. Line transient (falling), no COUT VOUT = 3.3 V VOUT = 3.3 V VEN = VCC = from 3.8 V to 5.5 V; IOUT = 1 mA; CIN = 0.1 µF; no COUT VEN = VCC = from 5.5 V to 3.8 V; IOUT = 1 mA; CIN = 0.1 µF; no COUT DocID022166 Rev 3 9/17 17 Typical performance characteristics LDCL015 Figure 17. Line transient (rising), COUT = 1 µF Figure 18. Line transient (falling), COUT = 1 µF VOUT = 3.3 V VOUT = 3.3 V VEN = VCC = from 3.8 V to 5.5 V; IOUT = 1 mA; CIN = 0.1 µF; COUT = 1 µF Figure 19. Load transient, no COUT VEN = VCC = from 5.5 V to 3.8 V; IOUT = 1 mA; CIN = 0.1 µF; COUT = 1 µF Figure 20. Load transient COUT = 1 µF VOUT = 3.3 V VEN = VIN = 3.8 V; IOUT = from 1 to 150 mA CIN = 0.1 µF NO COUT 10/17 VOUT = 3.3 V VEN = VIN = 3.8 V; IOUT = from 1 to 150 mA CIN = 0.1 µF COUT = 1 µF DocID022166 Rev 3 LDCL015 Application information 7 Application information 7.1 General operation The main feature of the LDCL015 is its capability to operate with or without input and output capacitors. To achieve this goal, the LDO architecture is based on a robust operational amplifier which has sufficient phase margin over all positions of the output capacitor pole. The LDCL015 can operate with a 100 nF output capacitor, but also without an output capacitor, showing in both configurations good supply voltage rejection, stability and dynamic performance. 7.2 Thermal and short-circuit protection The LDCL015 is self-protected from short-circuit condition and overtemperature. When the output load is higher than that supported by the device, the output current is increased until the limit of 220 mA (typ) is reached, at which point the current is kept constant even when the load impedance is zero. Thermal protection acts when the junction temperature reaches 170 °C. At this point the IC is completely shut down. As soon as the junction temperature falls back below 150 °C, the device begins operating again. To calculate the maximum power that the device can dissipate while keeping the junction temperature below the TJ-OP, the following formula is used: Equation 1 PDMAX = (125-TAMB) / RthJA 7.3 Output voltage setting for ADJ version In the adjustable version, the output voltage can be set from 0.8 V up to the input voltage, minus the voltage drop across the pass transistor (dropout voltage), by connecting a resistor divider between the ADJ pin and the output, thus allowing remote voltage sensing. The resistor divider should be selected using the following equation: Equation 2 VOUT = VADJ (1 + R1 / R2), with VADJ = 0.8 V (typ.) It is recommended to use resistors with values in the range of 10 kΩ to 50 kΩ. Lower values can also be suitable, but will increase current consumption. 7.4 Enable pin The LDCL015 features an enable function. When the EN voltage is higher than 2 V, the device is ON; if it is lower than 0.8 V, the device is OFF. In shutdown mode, the current consumption is lower than 1 µA. The EN pin does not have an internal pull-up, which means that it cannot be left floating if it is not used. DocID022166 Rev 3 11/17 17 Package mechanical data 8 LDCL015 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. Figure 21. SOT23-5L mechanical drawing BN 12/17 DocID022166 Rev 3 LDCL015 Package mechanical data Table 6. SOT23-5L mechanical data mm Dim. Min. Typ. Max. A 0.90 1.45 A1 0 0.15 A2 0.90 1.30 b 0.30 0.50 c 2.09 0.20 D 2.95 E 1.60 e 0.95 H 2.80 L 0.30 0.60 θ 0 8 Figure 22. SOT23-5L footprint (dimensions in mm) BN DocID022166 Rev 3 13/17 17 Packaging mechanical data 9 LDCL015 Packaging mechanical data Figure 23. SOT23-5L tape and reel drawing 14/17 DocID022166 Rev 3 LDCL015 Packaging mechanical data Table 7. SOT23-5L tape and reel mechanical data mm Dim. Min. Typ. A Max. 180 C 12.8 D 20.2 N 60 13.0 T 13.2 14.4 Ao 3.13 3.23 3.33 Bo 3.07 3.17 3.27 Ko 1.27 1.37 1.47 Po 3.9 4.0 4.1 P 3.9 4.0 4.1 DocID022166 Rev 3 15/17 17 Revision history 10 LDCL015 Revision history Table 8. Document revision history Date Revision 05-Sep-2011 1 First release. 2 Added part number LDCL015XX to document heading and Table 1. Modified document title. Removed Section 8: Other output voltage versions of the LDCL015 available on request. 3 Part numbers LDCL015XX and LDCL015XX33 changed to LDCL015. Updated Section 6: Typical performance characteristics and Section 8: Package mechanical data. Added Section 9: Packaging mechanical data. Minor text changes. 15-Sep-2011 09-May-2014 16/17 Changes DocID022166 Rev 3 LDCL015 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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