LDK120 200 mA low quiescent current very low noise LDO Datasheet - production data Applications • Mobile phones • Personal digital assistants (PDAs) 627/ ')1 [PP • Cordless phones and similar battery-powered systems • Digital still cameras Description The LDK120 low drop voltage regulator provides 200 mA of maximum current from an input supply voltage in the range of 1.9 V to 5.5 V, with a typical dropout voltage of 100 mV. 627/ It is stabilized with a ceramic capacitor on the output. Features • Input voltage from 1.9 to 5.5 V • Very low dropout voltage (100 mV typ. at 100 mA load) • Low quiescent current (max. 100 µA, 1 µA in OFF mode) • Very low noise • Output voltage tolerance: ± 2.0% @ 25 °C The very low drop voltage, low quiescent current and low noise features make it suitable for low power battery-powered applications. An enable logic control function puts the LDK120 in shutdown mode allowing a total current consumption lower than 1 µA. The device also includes a short-circuit constant current limiting and thermal protection. • 200 mA guaranteed output current • Wide range of fixed output voltages available on request: from 0.8 V to 3.5 V with 100 mV step • Adjustable version: from 0.8 V to VIN-Vdrop • Logic-controlled electronic shutdown • Compatible with ceramic capacitor COUT = 1 µF • Internal current and thermal limit • Available in SOT23-5L, SOT323-5L and DFN6 (1.2 x 1.3 mm) packages • Temperature range: -40 °C to 125 °C April 2014 This is information on a product in full production. DocID023965 Rev 5 1/24 www.st.com 24 Contents LDK120 Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 9 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2/24 DocID023965 Rev 5 LDK120 1 Diagram Diagram Figure 1. Block diagram DocID023965 Rev 5 3/24 Pin configuration 2 LDK120 Pin configuration Figure 2. Pin connection (top view) #:1"%+/$ SOT23-5L, SOT323-5L DFN6 (1.2 x 1.3) Table 1. Pin description (SOT23-5L, SOT323-5L) Pin Function Symbol SOT23/ SOT323 DFN6 1 6 IN Input voltage of the LDO 2 2 GND Common ground 3 4 EN Enable pin logic input: Low = shutdown, High = active 4 3 BYP(1)/ADJ /NC 5 1 OUT Output voltage of the LDO - 5 N/C Not connected. This pin should be connected to GND Fixed Bypass capacitor Adjustable Adjustable pin D version Internally not connected 1. Bypass capacitor for noise reduction on fixed version is optional, if not used the relevant pin must be left floating with no routing on the board. 4/24 DocID023965 Rev 5 LDK120 3 Typical application Typical application Figure 3. Typical application circuits for fixed version 287 ,1 9, (1 *1' %<3$66 &,) 21 9R &R) &%<3 2)) Figure 4. Typical application circuits for D version ,1 9, 287 (1 *1' &,) 9R &R) 21 2)) Figure 5. Typical application circuits for adjustable version VO=VADJ (1+R1/R2) DocID023965 Rev 5 5/24 Maximum ratings 4 LDK120 Maximum ratings Table 2. Absolute maximum ratings Symbol VIN DC input voltage Value Unit - 0.3 to 7 V VOUT DC output voltage - 0.3 to VI + 0.3 V VEN Enable input voltage - 0.3 to VI + 0.3 V 2 V Output current Internally limited mA Power dissipation Internally limited mW VBYP/ADJ IOUT PD Note: Parameter ADJ/Bypass pin voltage TSTG Storage temperature range - 65 to 150 °C TOP Operating junction temperature range - 40 to 125 °C 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 3. Thermal data Symbol 6/24 Parameter SOT23-5L SOT323-5L DFN-6L Unit RthJA Thermal resistance junction-ambient 160 246 237 °C/W RthJC Thermal resistance junction-case 68 134 104 °C/W DocID023965 Rev 5 LDK120 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 4. Electrical characteristics for LDK120 (fixed version) Symbol Parameter VIN Operating input voltage VOUT VOUT accuracy Test conditions Min. Typ. Max. Unit 1.9 5.5 V IOUT=1 mA, TJ=25 °C -2.0 2.0 % IOUT=1 mA, -40 °C<TJ<125 °C -3.0 3.0 % ΔVOUT Static line regulation VOUT +1 V ≤ VIN ≤ 5.5 V, IOUT=1 mA 0.05 %/V ΔVOUT Static load regulation IOUT = 1 mA to 200 mA 0.006 %/mA VDROP Dropout voltage (1) IOUT = 100 mA, VOUT=2.5 V 100 IOUT = 200 mA, VOUT=2.5 V 40 °C<TJ<125 °C 150 mV 300 eN Output noise voltage 10 Hz to 100 kHz, IOUT=10 mA, VOUT=2.5 V, CBYP=10 nF 51 µVRMS eN(2) Output noise voltage 10 Hz to 100 kHz, IOUT=10 mA, VOUT=2.5 V 148 µVRMS SVR Supply voltage rejection VIN=VOUTNOM+0.5 V+/-VRIPPLE VRIPPLE=0.1 V Freq.=120 Hz to 10 kHz IOUT=10 mA 55 dB IOUT=0 mA, -40 °C<TJ<125 °C 30 60 IOUT=200 mA, -40 °C<TJ<125 °C 50 100 IQ Quiescent current VIN input current in OFF mode: VEN=GND ISC VEN IEN TSHDN COUT Short-circuit current RL=0 Enable input logic low VIN=1.9 V to 5.5 V, -40 °C<TJ<125 °C Enable input logic high VIN=1.9 V to 5.5 V, -40 °C<TJ<125 °C µA 1 400 mA 0.4 V 1.2 Enable pin input current VSHDN=VIN 100 Thermal shutdown 160 Hysteresis 20 nA °C Output capacitor Capacitance (see Section 6: Typical performance characteristics) 1 22 µF 1. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. 2. Valid for D version or standard version without CBYP. DocID023965 Rev 5 7/24 Electrical characteristics LDK120 TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless otherwise specified. Table 5. Electrical characteristics for LDK120 (adjustable version) Symbol Parameter VIN Operating input voltage VADJ VADJ accuracy Test conditions Min. Typ. 1.9 IOUT=1 mA, TJ=25 °C 784 IOUT=1 mA, -40 °C<TJ<125 °C -3.0 800 Max. Unit 5.5 V 816 mV 3.0 % ΔVOUT Static line regulation VOUT +1 V ≤ VIN ≤ 5.5 V, IOUT=1 mA 0.05 %/V ΔVOUT Static load regulation IOUT=1 mA to 200 mA 0.006 %/mA VDROP eN Dropout voltage (1) Output noise voltage IADJ Adjust pin current SVR Supply voltage rejection IQ Quiescent current IOUT=100 mA, VOUT=2.5 V 100 IOUT = 200 mA, VOUT=2.5 V 40 °C<TJ<125 °C, 150 10 Hz to 100 kHz, IOUT=10 mA VOUT=VADJ 115 mV VEN IEN TSHDN COUT µVRMS 1 VIN=VOUTNOM+0.5 V+/-VRIPPLE VRIPPLE=0.1 V Freq.=120 Hz to 10 kHz IOUT=10 mA 55 IOUT=0 mA, -40 °C<TJ<125 °C 30 60 IOUT=200 mA, -40 °C<TJ<125 °C 50 100 VIN input current in OFF mode: VEN=GND ISC 300 Short-circuit current RL=0 Enable input logic low VIN=1.9 V to 5.5 V, -40 °C<TJ<125 °C Enable input logic high VIN=1.9 V to 5.5 V, -40 °C<TJ<125 °C dB µA 1 400 mA 0.4 V 1.2 Enable pin input current VSHDN=VIN 100 Thermal shutdown 160 Hysteresis 20 nA °C Output capacitor Capacitance (see Section 6: Typical performance characteristics) 1 22 1. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. 8/24 µA DocID023965 Rev 5 µF LDK120 6 Typical performance characteristics Typical performance characteristics 0.850 0.840 0.830 0.820 0.810 0.800 0.790 0.780 0.770 0.760 0.750 -50 AM12800v1 VIN = 1.9 V, I OUT = 1 mA VADJ [V] VADJ [ V ] CIN = COUT = 1 µF, VEN to VIN, unless otherwise specified. Figure 6. Output voltage vs. temp. for Figure 7. Output voltage vs. temp. for adjustable (IO = 1 mA) adjustable version (IO = 200 mA) -25 0 25 50 75 Temperature [°C] 100 125 150 3.500 3.400 3.300 3.200 3.100 3.000 2.900 2.800 2.700 2.600 2.500 -50 AM16198v1 VIN = 4 V, IOUT = 1 mA -25 0 25 50 75 Temperature [°C] 100 125 150 Figure 10. Line regulation vs. temp. for adjustable version 0 25 50 75 Temperature [°C] 100 125 150 3.500 3.400 3.300 3.200 3.100 3.000 2.900 2.800 2.700 2.600 2.500 -50 AM16199v1 VIN = 4 V, IOUT = 200 mA -25 0 25 50 75 Temperature [°C] 100 125 150 Figure 11. Short-circuit current vs. temp. for adjustable version AM16201v1 600 VIN from 1.9 V to 5.5 V, I OUT = 1 mA 0.09 VIN = 1.9 V 550 0.08 500 0.07 ISHORT [mA] Line regulation [%/V] -25 AM16200v1 0.1 0.06 0.05 0.04 0.03 450 400 350 300 0.02 250 0.01 0 -50 AM16197v1 VIN = 1.9 V, I OUT = 200 mA Figure 9. Output voltage vs. temp. for fixed version (IO = 200 mA) VOUT [V] VOUT [V] Figure 8. Output voltage vs. temp. for fixed version (IO = 1 mA) 0.850 0.840 0.830 0.820 0.810 0.800 0.790 0.780 0.770 0.760 0.750 -50 -25 0 25 50 75 100 125 150 200 -50 -25 0 25 50 75 100 125 150 Temperature [°C] Temperature [°C] DocID023965 Rev 5 9/24 Typical performance characteristics LDK120 Figure 12. Load regulation vs. temp. for adjustable version Figure 13. Load regulation vs. temp. for fixed version AM16202v1 0.01 AM16203v1 0.01 V IN = 4 V, I OUT from 1 mA to 200 mA V IN = 1.9 V, I OUT from 1 mA to 200 mA 0.008 Load regulation [%/mA] Load regulation [%/mA] 0.008 0.006 0.004 0.002 0 -50 -25 0 25 50 75 100 125 0.006 0.004 0.002 0 -50 150 -25 0 Temperature [°C] AM16204v1 V IN = 1.9 V, I OUT = 1 mA 0.8 1.600 Low 1.400 High 1.200 0.7 0.6 0.5 0.4 -25 0 25 50 75 100 125 Low High 1.000 0.800 0.600 0.000 -50 150 -25 0 50 75 100 125 150 Figure 17. Quiescent current vs. temp. for adjustable version (IO = 200 mA) AM16207v1 200 V IN = 1.9 V, I OUT = 0 mA 90 25 Temperature [°C] AM16206v1 100 V IN = 1.9 V, I OUT = 200 mA 180 80 Quiescent current [µA] Quiescent current [µA] 150 0.200 Figure 16. Quiescent current vs. temp. for adjustable version (IO = 0 mA) 70 60 50 40 30 20 160 140 120 100 80 60 40 20 10 10/24 125 AM16205v1 V IN = 5.5 V, I OUT = 1 mA Temperature [°C] 0 -50 100 0.400 0.3 0.2 -50 75 Figure 15. Enable pin thresholds vs. temp. V EN Thresholds [V] VEN Thresholds [V] 0.9 50 Temperature [°C] Figure 14. Enable pin thresholds vs. temp. (VIN = 1.9 V) 1 25 -25 0 25 50 75 Temperature [ °C] 100 125 150 0 -50 -25 0 25 50 75 Temperature [°C] DocID023965 Rev 5 100 125 150 LDK120 Typical performance characteristics Figure 18. Quiescent current vs. temp. for fixed Figure 19. Quiescent current vs. temp. for fixed version (IO = 0 mA) version (IO = 200 mA) AM16208v1 100 V IN = 4 V, I OUT = 0 mA V IN = 4 V, I OUT = 200 mA 180 80 Quiescent current [µA] Quiescent current [µA] AM16209v1 200 90 70 60 50 40 30 20 160 140 120 100 80 60 40 20 10 0 -50 -25 0 25 50 75 100 125 0 -50 150 -25 0 25 Temperature [°C] Figure 20. Shutdown current vs. temperature 150 AM16211v1 70 No Cbyp 60 0.7 50 0.6 SVR [dB] Quiescent current [µA] 125 Cbyp =10 nF 0.8 0.5 0.4 0.3 40 30 20 0.2 10 0.1 0 -50 100 80 V IN = 4 V , V EN = GND 0.9 75 Figure 21. SVR vs. frequency (VO = 2.5 V) AM16210v1 1 50 Temperature [°C] V OUT = 2.5 V, VIN = VOUT + 0.5 V +/ - 100 mV, I OUT = 10 mA -25 0 25 50 75 100 125 0 100 150 1000 10000 100000 Frequency [Hz] Temperature [°C] Figure 22. SVR vs. frequency (VO = VADJ) Figure 23. Output noise vs. frequency (VO = 3.3 V) AM16213v1 AM16212v1 80 1.4 Cbyp = 10 nF No Cbyp 70 1.2 eN [µV /Sqrt (Hz)] 60 SVR [dB] VIN = 4.3 V, IOUT = 10 mA 50 40 30 20 10 1 0.8 0.6 0.4 0.2 VOUT = V ADJ, VIN = VOUT + 0.5 V +/ - 100 mV, I OUT = 10 mA 0 100 1000 10000 Frequency [Hz] 100000 0 1000 10000 100000 Frequency (Hz) DocID023965 Rev 5 11/24 Typical performance characteristics LDK120 Figure 24. Output noise vs. frequency (VO = VADJ) Figure 25. Stability region vs. COUT (fixed) AM16214v1 VIN = 1.8 V, IOUT = 10 mA 9 1.2 8 1.0 7 ESR @ 100 kHz [Ω] eN [µV /Sqrt (Hz)] AM16215v1 10 1.4 0.8 0.6 0.4 6 Stability area 5 4 3 2 0.2 1 0 0.0 1000 10000 100000 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 COUT [µF] (nominal value) Frequency [Hz] VIN = VEN = 4 to 5.5 V, IOUT = 10 mA to 0.2 A, CIN = 1 µF, TA = 25 °C Figure 26. Stability region vs COUT (adjust.) Figure 27. Line transient (VOUT = VADJ) AM16216v1 10 9 8 ESR @ 100 kHz [Ω] 7 6 Stability area 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 COUT [µF] (nominal value) VIN = VEN = 1.9 to 5.5 V, IOUT = 10 mA to 0.2 A, CIN = 1 µF, TA = 25 °C Figure 28. Line transient (VOUT = 3 V) VOUT = 3 V, VIN = 4 V to 4.5 V, VEN = 2 V, IOUT = 1 mA, NO CIN, COUT = 1 µF, tr = tf = 5 µs 12/24 VOUT = VADJ, VIN = 3.5 V to 4 V, VEN = 2 V, IOUT = 1 mA, NO CIN, COUT = 1 µF, tr = tf = 5 µs Figure 29. Load transient (VOUT = 3 V) VOUT = 3 V, VIN = VEN = 3.5 V, IOUT = 1 mA to 200 mA, COUT = 1 µF, tr = tf = 5 µs DocID023965 Rev 5 LDK120 Typical performance characteristics Figure 30. Load transient (VOUT = VADJ) Figure 31. Startup transient VOUT = VADJ, VIN = VEN = 3.5 V, IOUT = 1 mA to 200 mA, COUT = 1 µF, tr = tf = 5 µs VOUT = 3 V, VIN = VEN = 0 to 4.2 V, IOUT = 1 mA, CIN = COUT = 1 µF, tr = tf = 5 µs Figure 32. Enable transient (VOUT = VADJ) Figure 33. Enable transient (VOUT = 3 V) VIN = 4 V, VEN = 0 to VIN, IOUT = 200 mA, CIN = COUT = 1 µF, tr = tf = 1 µs VOUT @ 0.8 V, VIN = 1.9, VEN = 0 to VIN, IOUT = 200 mA, COUT = 1 µF, tr = tf = 1 µs Figure 34. Dropout voltage vs. temperature (IOUT = 100 mA) Figure 35. Dropout voltage vs. temperature (IOUT = 200 mA) AM16226v1 300 C IN = COUT = 1 µF, IOUT = 200 mA, Fixed 3.0 V version 250 Dropout Voltage [mV] Dropout Voltage [mV] 250 200 150 100 50 0 -50 AM16227v1 300 C IN = COUT = 1 µF, IOUT = 100 mA, Fixed 3.0 V version -25 0 25 50 75 100 125 150 200 150 100 50 0 -50 -25 0 25 50 75 100 125 150 Temperature [°C] Temperature [ °C] DocID023965 Rev 5 13/24 Package mechanical data 7 LDK120 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 36. SOT23-5L mechanical drawing BN 14/24 DocID023965 Rev 5 LDK120 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 37. SOT23-5L footprint (dimensions in mm) BN DocID023965 Rev 5 15/24 Package mechanical data LDK120 Figure 38. DFN6L (1.2 x 1.3 mm) drawing B$ 16/24 DocID023965 Rev 5 LDK120 Package mechanical data Table 7. DFN6L (1.2 x 1.3 mm) mechanical data mm Dim. Min. Typ. Max. A 0.41 0.45 0.50 A1 0.00 0.02 0.05 D - 1.20 - E - 1.30 - e - 0.40 - b 0.15 0.18 0.25 L 0.475 0.525 0.575 L3 0.375 0.425 0.475 aaa - 0.05 - Figure 39. DFN6L footprint (dimensions in mm) B$ DocID023965 Rev 5 17/24 Package mechanical data LDK120 Figure 40. SOT323-5L drawing BI 18/24 DocID023965 Rev 5 LDK120 Package mechanical data Table 8. SOT323-5L mechanical data mm Dim. Min. Typ. Max. A 0.80 1.10 A1 0 0.10 A2 0.80 b 0.15 0.30 c 0.10 0.22 D 1.80 2 2.20 E 1.80 2.10 2.40 E1 1.15 1.25 1.35 0.90 e 0.65 e1 1.30 L 0.26 < 0° DocID023965 Rev 5 0.36 1 0.46 8° 19/24 Packaging mechanical data 8 LDK120 Packaging mechanical data Figure 41. SOT23-5L and SOT323-xL tape and reel drawing 20/24 DocID023965 Rev 5 LDK120 Packaging mechanical data Table 9. 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 Table 10. SOT323-xL tape and reel mechanical data mm Dim. Min. Typ. Max. A 175 180 185 C 12.8 13 13.2 D 20.2 N 59.5 60 60.5 T 14.4 Ao 2.25 Bo 3.17 Ko 1.2 Po 3.9 4.0 4.1 P 3.9 4.0 4.2 DocID023965 Rev 5 21/24 Order codes 9 LDK120 Order codes Table 11. Order codes Packages Output voltages SOT323-5L SOT23-5L DFN6L LDK120C-R LDK120M-R LDK120PU-R ADJ LDK120C08R LDK120M08R LDK120PU08R 0.8 V LDK120C10R LDK120M10R LDK120PU10R 1.0 V LDK120C11R LDK120M11R 1.1 V LDK120C12R LDK120M12R 1.2 V LDK120C15R LDK120M15R 1.5 V LDK120C18R LDK120M18R 1.8 V LDK120C25R LDK120M25R LDK120C28R LDK120M28R LDK120PU25R 2.5 V 2.8 V LDK120M29R LDK120PU29R 2.9 V LDK120C30R LDK120M30R LDK120PU30R 3.0 V LDK120C31R LDK120M31R LDK120C32R LDK120M32R LDK120C33R 3.1 V LDK120PU32R 3.2 V LDK120DM33R 3.3 V LDK120M33R 3.3 V LDK120C35R 3.5 V Table 12. Marking 22/24 Order codes Packages Output voltages Marking LDK120DMxxR SOT23-5L xx V Dxx LDK120MxxR SOT23-5L xx V Kxx LDK120CxxR SOT323-5L xx V Kxx LDK120PUxxR DFN-6L xx V xx LDK120M-R SOT23-5L Adj KAD LDK120C-R SOT323-5L Adj KAD LDK120PU-R DFN-6L Adj AD DocID023965 Rev 5 LDK120 10 Revision history Revision history Table 13. Document revision history Date Revision 26-Nov-2012 1 Initial release 31-Jan-2013 2 Added new part number LDK120PU32R Updated Table 11 on page 22 18-Oct-2013 3 RPN LDK120xx changed to LDK120. Updated the Features and the Description in cover page. Cancelled Table1: Device summary. Updated Section 7: Package mechanical data, Table 2: Absolute maximum ratings and Table 11: Order codes. Added Section 8: Packaging mechanical data. Minor text changes. 10-Mar-2014 4 Updated Table 11: Order codes. 5 Updated Table 1: Pin description (SOT23-5L, SOT323-5L), Table 4: Electrical characteristics for LDK120 (fixed version), Table 5: Electrical characteristics for LDK120 (adjustable version), Table 11: Order codes and Table 12: Marking. Added Figure 4: Typical application circuits for D version. Minor text changes. 29-Apr-2014 Changes DocID023965 Rev 5 23/24 LDK120 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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