LDL112PU33R

LDL112 Datasheet 1.2 A low quiescent current LDO with reverse current protection Features • • • • • • • • Input voltage from 1.6 to 5.5 V Very low-dropout voltage (300 mV typ. at 1 A load) Low quiescent current (35 µA typ. at no-load, 1 µA max. in off mode) Output voltage tolerance: ± 2.0% at 25 °C 1.2 A guaranteed output current Wide range of output voltages available on request: 0.8 V to 5 V with 50 mV step and adjustable Logic-controlled electronic shutdown Compatible with ceramic capacitor COUT = 1 µF • • • • • Internal current and thermal limit Available in DFN6 (2x2), DFN6 (3x3) mm, SO8-batwing and PPAK packages Temperature range: -40 °C to 125 °C Reverse current protection Output discharge function (optional) Applications Maturity status link LDL112 • • • • • Consumer Computer Battery-powered systems Low voltage point-of-load USB-powered devices Description The LDL112 is a low-dropout linear regulator, which can provide a maximum current of 1.2 A, with a typical dropout voltage of 300 mV. It is stabilized with a ceramic capacitor on the output. The very low drop voltage, low quiescent current and reverse current protection features make it suitable for low power battery-powered applications. The enable logic control function puts the LDL112 in shutdown mode allowing a total current consumption lower than 1 µA. The device is equipped with current limit and thermal protection. DS10321 - Rev 3 - February 2019 For further information contact your local STMicroelectronics sales office. www.st.com LDL112 Diagram 1 Diagram Figure 2. Block diagram VIN VIN Thermal protection Thermal protection Current limit Bandgap reference Reverse current protection 800mV VFB VFB OPAMP PMOS VOUT VOUT * * EN Reverse current protection 800mV OPAMP PMOS Current limit Bandgap reference Internal enable EN Enable GND Fixed version Internal enable ADJ Enable GND Adjustable version AM14036V1 Note: DS10321 - Rev 3 (*) The output discharge function is optional. page 2/32 LDL112 Pin configuration 2 Pin configuration Figure 3. Pin connection DFN6 (3x3) and DFN6 (2x2) (top view) Figure 4. Pin connection PPAK and SO8 (top view) Table 1. Pin description DS10321 - Rev 3 Symbol Function VIN LDO input voltage GND Common ground EN Enable pin logic input: low = shutdown, high = active. Don't leave this pin floating ADJ Adjustable pin (on adjustable version) VOUT LDO output voltage Exposed pad Must be connected to GND NC Not connected page 3/32 LDL112 Typical application 3 Typical application Figure 5. Typical application circuits VIN VI LDL112 C In ON 1µF OFF VOUT VO EN GND VIN VI R1 C Out OFF 1µF C In 1µF VOUT VO ON EN LDL112 GND C Out 1µF R2 Adjustable version Fixed version AM14039V1 DS10321 - Rev 3 page 4/32 LDL112 Maximum ratings 4 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 VADJ ADJ pin voltage 2 V IOUT Output current Internally limited mA Power dissipation Internally limited mW PD Note: Parameter 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 Parameter DFN6 (3x3) DFN6 (2x2) SO8 PPAK Unit RthJA Thermal resistance junction-ambient 55 65 55(1) 100 °C/W RthJC Thermal resistance junction-case 10 15 20 8 °C/W 1. Considering 6 cm² of copper board heatsink. DS10321 - Rev 3 page 5/32 LDL112 Electrical characteristics 5 Electrical characteristics TJ = 25 °C, VIN = VOUT(NOM) + 0.5 V (for VOUT(NOM) ≤ 1 V, VIN = 2.1 V), CIN = COUT = 1 µF, IOUT = 5 mA, VEN = VIN, unless otherwise specified. Table 4. LDL112 electrical characteristics (fixed version) Symbol VIN VOUT Parameter Test conditions Max. Unit 1.6 5.5 V -2.0 2.0 % -3.0 3.0 % 0.05 0.1 %/V IOUT = 0 mA to 1.2 A, VIN > 2.1 V 15 30 mV IOUT = 1 A, VOUT = 3.3 V 300 Operating input voltage IOUT = 5 mA, TJ = 25 °C VOUT accuracy IOUT = 5 mA, -40 °C < TJ < 125 °C ΔVOUT Static line regulation ΔVOUT Static load regulation VDROP Min. Dropout voltage (1) (3) VOUT(NOM) + 0.5 V < VIN ≤ 5.5 V (2) IOUT = 1.2 A,VOUT = 3.3 V 350 -40 °C < TJ < 125 °C eN Output noise voltage Typ. 10 Hz to 100 kHz, IOUT = 10 mA VOUT = 3.3 V 600 mV 135 µVRMS 57 dB VIN = VOUT(NOM) + 0.5 V +/- VRIPPLE (2) SVR Supply voltage rejection VRIPPLE = 0.2 V frequency = 1 kHz IOUT = 10 mA IOUT = 0 mA, -40 °C < TJ 2.1 V 1.4 35 70 250 400 0.1 1 2 VIN = VOUT(NOM) + 0.5 V to 5.5 V, -40 °C < TJ < 125 °C (2) V 1.4 VEN = VIN 100 Thermal shutdown 165 Hysteresis 20 Output capacitor Capacitance (see Section 7 Typical performance characteristics) A 0.35 -40 °C < TJ < 125 °C (2) VIN = VOUT(NOM) + 0.5 V to 5.5 V, µA 1 nA °C 10 µF 1. Not applicable for Vout(nom) > 4.5 V. 2. For VOUTNOM lower than or equal to 1 V, VIN = 2.1 V. 3. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. DS10321 - Rev 3 page 6/32 LDL112 Electrical characteristics TJ = 25 °C, VIN = 2.1 V, CIN = COUT = 1 µF, IOUT = 5 mA, VEN = VIN, unless otherwise specified. Table 5. LDL112 electrical characteristics (adjustable version) Symbol VIN VADJ Parameter Test conditions Min. Operating input voltage 784 IOUT = 5 mA, -40 °C < TJ < 125 °C ΔVOUT Static line regulation ΔVOUT Static load regulation (1) Dropout voltage (3) 2.1 V ≤ VIN ≤ 5.5 V, IOUT = 1 mA IOUT = 0 mA to 1.2 A, VIN > 2.1 V IADJ Output noise voltage 5.5 V 816 mV 3.0 % 0.05 0.1 %/V 6 20 mV 800 300 IOUT = 1.2 A, VOUT = 3.3 V 350 -40 °C < TJ < 125 °C eN Unit -3.0 (2) IOUT = 1 A, VOUT = 3.3 V VDROP Max. 1.6 IOUT = 5 mA, TJ = 25 °C VADJ accuracy Typ. 10 Hz to 100 kHz, IOUT = 10 mA 600 µVRMS 60 Adjust pin current 0.130 mV 1 µA VIN = VOUTNOM + 0.5 V +/- VRIPPLE SVR Supply voltage rejection VRIPPLE = 0.2 V, freq. = 1 kHz, IOUT = 10 mA 53 IOUT = 0 mA, -40 °C < TJ < 125 °C IQ Quiescent current IOUT = 1.2 A, 2.1 V < VIN < 5.5 V, -40 °C < TJ < 125 °C VIN input current in off mode: VEN = GND ISC VEN IEN TSHDN COUT Short-circuit current RL = 0, VIN > 2.1 V Enable input logic low VIN = 2 V to 5.5 V, -40 °C < TJ < 125 °C (2) Enable input logic high VIN = 2 V to 5.5 V, -40 °C < TJ < 125 °C Enable pin input current VEN = VIN 1.4 (2) 35 70 240 400 0.1 1 2 0 Hysteresis 20 Capacitance (see Section 7 Typical performance characteristics) 0.35 100 165 1 µA A 1.4 Thermal shutdown Output capacitor dB (2) V nA °C 10 µF 1. Not applicable for Vout(nom) > 4.5 V. 2. For VOUT lower than or equal to 1 V, VIN = 2.1 V. 3. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. DS10321 - Rev 3 page 7/32 LDL112 Application information 6 Application information 6.1 Thermal and short-circuit protections The LDL112 is self-protected from short-circuit condition and overtemperature. When the output load is higher than the one supported by the device, the output current increases until the limit of typically 2 A is reached, at this point the current is kept constant even when the load impedance is zero. Thermal protection acts when the junction temperature reaches 165 °C, therefore the IC shuts down. As soon as the junction temperature falls again below the thermal hysteresis value the device starts working again. In order to calculate the maximum power that the device can dissipate, keeping the junction temperature below the TOP , the following formula is used: Equation 1 PDMAX= (125 - TAMB)/RTHJA 6.2 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 could be selected by 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 current consumption increases. 6.3 Reverse current protection The device avoids the reverse current to flow from output to input during any operating condition (with enable pin in high or low status).The reverse current protection acts in particular during fast turning on/off operations or when another power supply (with higher voltage than the input one) is connected to the output port. If a power supply with lower voltage than the LDO output voltage is connected to VOUT pin, LDO enters the current protection status, causing high power dissipation. In the application, the LDL112 reverse current protection acts in the following cases: 1. Off-state, EN pin is at GND level, VOUT > [VIN + 100 mV]. In this case the device power pass element (MOSFET) is off, the bulk and gate are switched to VOUT and therefore all possible current paths from VOUT to VIN are interrupted. DS10321 - Rev 3 2. On-state, EN pin is at high level and VOUT > VOUT(nominal) . In this condition, VOUT is higher than the nominal level, so the device op-amp works in open loop and the power element is off. VGS is zero, the bulk and gate are switched to VOUT (where VOUT > [VIN + 100 mV]) therefore all possible current paths from VOUT to VIN are interrupted. 3. On-state, EN pin is at high level and VOUT< VOUT(nominal) . In this condition VOUT is lower than the nominal level, so the op-amp works in open loop with the power MOSFET on. VGS is maximal so the power channel conducts with very low RDS(on). When VOUT > VIN the current can flow from VOUT to VIN until the condition VOUT > (VIN + 100 mV) is reached. page 8/32 LDL112 Typical performance characteristics 7 Typical performance characteristics (CIN = COUT = 1 µF, VEN to VIN, T = 25 °C unless otherwise specified) Figure 9. Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 1.2 A) 3.6 3.6 3.5 3.5 Output Voltage [V] Output Voltage [V] Figure 8. Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 5 mA) 3.4 3.3 3.2 3.4 3.3 3.2 3.1 3.1 3 3 -60 -40 -20 0 20 40 60 80 100 120 -60 140 -40 -20 0 AM14040V1 VIN=3.8V, IOUT=5mA, VOUT=3.3V 60 80 100 120 140 AM14041V1 Figure 11. Output voltage vs. temperature (VOUT = VADJ, IOUT = 1.2 A) 0.9 0.9 0.88 0.88 0.86 0.86 Output Voltage [V] Output Voltage [V] 40 VIN=3.8V, IOUT=1.2A, VOUT=3.3V Figure 10. Output voltage vs. temperature (VOUT = VADJ, IOUT = 5 mA) 0.84 0.82 0.8 0.78 0.76 0.84 0.82 0.8 0.78 0.76 0.74 0.74 0.72 0.72 0.7 0.7 -60 -40 -20 0 20 40 60 80 100 120 140 Temperature [°C] VIN=1.6V, IOUT=5mA, VOUT=VADJ DS10321 - Rev 3 20 Temperature [°C] Temperature [°C] -60 -40 -20 0 20 40 60 80 100 120 140 Temperature [°C] AM14042V1 VIN=2V, IOUT=1.2A, VOUT=VADJ AM14043V1 page 9/32 LDL112 Typical performance characteristics Figure 12. Line regulation vs. temperature Figure 13. Load regulation vs. temperature 40 0.2 0.18 35 Load regulation [mV] Line regulation [%/V] 0.16 0.14 0.12 0.1 0.08 0.06 30 25 20 15 10 0.04 5 0.02 0 0 -60 -40 -20 0 20 40 60 80 100 120 -60 140 -40 -20 0 VIN=3.8V to 5.5V, IOUT=1.2A, VOUT=3.3V AM14044V1 500 90 450 80 400 Quiescent current [µA] Quiescent current [µA] 60 80 100 120 140 60 50 40 30 AM14045V1 Figure 15. Quiescent current vs. temperature (IOUT = 1.2 A) 100 70 350 300 250 200 150 20 100 10 50 0 0 -60 -40 -20 0 20 40 60 80 100 120 -60 140 -40 -20 0 20 40 60 80 100 120 140 Temperature [°C] Temperature [°C] AM14046V1 VIN=3.8V, IOUT= 0mA, VOUT=3.3V AM14047V1 VIN=3.8V, IOUT= 1.2A, VOUT=3.3V Figure 16. Shutdown current vs. temperature Figure 17. Quiescent current vs. load current 2.5 300 250 2 Quiescent current [µA] Quiescent current [µA] 40 VIN=3.8V, IOUT=from 0mA to 1.2A , VOUT=3.3V Figure 14. Quiescent current vs. temperature (IOUT = 0 mA) 1.5 1 0.5 200 150 100 50 0 0 -60 -40 -20 0 20 40 60 80 100 120 140 Temperature [°C] VIN=2V, VEN= GND, VOUT=VADJ DS10321 - Rev 3 20 Temperature [°C] Temperature [°C] 0 200 400 600 800 1000 1200 Load current [mA] AM14048V1 VIN=2V, VOUT=VADJ , T=25°C AM14049V1 page 10/32 LDL112 Typical performance characteristics Figure 19. Dropout voltage vs. temperature (IOUT = 1.2 A) 400 700 350 600 Dropout voltage [mV] Dropout voltage [mV] Figure 18. Dropout voltage vs. temperature (IOUT = 600 mA) 300 250 200 150 100 500 400 300 200 100 50 0 0 -60 -40 -20 0 20 40 60 80 100 120 -60 140 -40 -20 0 AM14050V1 IOUT= 0.6A, VOUT=3.3V Figure 20. Dropout voltage vs. load current 40 60 80 100 120 140 AM14051V1 IOUT= 1.2A, VOUT=3.3V Figure 21. Short-circuit current vs. input voltage 3 400 350 2.5 Short circuit current [A] Dropout Voltage [mV] 20 Temperature [°C] Temperature [°C] 300 250 200 150 100 2 1.5 1 0.5 50 0 0 10 210 410 610 810 0 1010 1 2 Load current [mA] 3 4 5 6 Input voltage [V] T=25°C AM14053V1 VOUT=3.3V, T=25°C AM14052V1 Figure 22. Enable thresholds vs. temperature Figure 23. SVR vs. frequency 1.8 70 Vout=3.3V Low 60 50 1.2 1 0.8 40 30 20 0.6 10 0.4 0 0.2 -60 -40 -20 0 20 40 60 80 100 120 140 VIN=3.8V 100 1000 10000 100000 1000000 Frequency [Hz] Temperature [°C] DS10321 - Rev 3 Vout=Vadj Hi 1.4 SVR [dB] Enable voltage [V] 1.6 AM14054V1 VIN=1.6V or 3.8V +/- 200mV, IOUT=10mA, C OUT =1µF AM14055V1 page 11/32 LDL112 Typical performance characteristics Figure 25. Stability plan vs. Cout, ESR Figure 24. Output noise spectral density 3 7 2.5 6 Vout=3.3V ESR @ 100 KHz[Ω] Output Noise Density [mV/sqrt(Hz)] 8 Vout=Vadj 5 4 3 2 1.5 STABILITY AREA 1 2 0.5 1 0 0.01 0.1 1 Frequency: f [kHz] 10 100 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 24 25 COUT [µF] (nominal value) VIN = 1.6V or 3.8V, CIN = COUT =1µF AM14057V1 VIN from 2 to 5.5V, IOUT from 0 to 1.2A, CIN=1µF AM14057V2 Figure 27. Load transient Figure 26. Line transient VEN IOUT VOUT VOUT VIN=from 3.5V to 5.5V, VEN=2V, IOUT=10mA, VOUT=3.3V, COUT=1µF, t r=tf=1µs VIN=VEN=4V, IOUT=from 5mA to 1.2A, VOUT=3.3V, tr=tf=5µs AM14059V1 AM14058V1 Figure 28. Enable transient Figure 29. Turn-on time VEN VEN IOUT VOUT VOUT VIN=4V, VEN=0V to 2V, IOUT=1.2A, VOUT=3.3V, tr=tf=1µs AM14060V1 DS10321 - Rev 3 VIN=VEN= from 0V to 5.5V, IOUT=5mA, VOUT=3.3V, tr=tf=5µs AM14061V1 page 12/32 LDL112 Package mechanical data 8 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. 8.1 DFN6 (3x3) package information Figure 30. DFN6 (3x3) package outline 7946637_C DS10321 - Rev 3 page 13/32 LDL112 DFN6 (3x3) package information Table 6. DFN6 (3x3) mechanical data Dim. mm Min. A 0.80 A1 0 A3 Max. 1 0.02 0.05 0.20 b 0.23 D 2.90 D2 2.23 E 2.90 E2 1.50 e L Typ. 0.45 3 3.10 2.50 3 3.10 1.75 0.95 0.30 0.40 0.50 Figure 31. DFN6 (3x3) recommended footprint 7946637_C DS10321 - Rev 3 page 14/32 LDL112 DFN6 (3x3) packing information 8.2 DFN6 (3x3) packing information Figure 32. DFN6 (3x3) tape outline 7875978_ N DS10321 - Rev 3 page 15/32 LDL112 DFN6 (3x3) packing information Figure 33. DFN6 (3x3) reel outline 7875978_N Table 7. DFN6 (3x3) tape and reel mechanical data Dim. DS10321 - Rev 3 mm Min. Typ. Max. A0 3.20 3.30 3.40 B0 3.20 3.30 3.40 K0 1 1.10 1.20 page 16/32 LDL112 DFN6 (2x2) package information 8.3 DFN6 (2x2) package information Figure 34. DFN6 (2x2) package outline 7733060 DS10321 - Rev 3 page 17/32 LDL112 DFN6 (2x2) package information Table 8. DFN6 (2x2) mechanical data Dim. mm Min. Typ. Max. A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 - 0.203 ref - b 0.25 0.30 0.35 D - 2.00 - E - 2.00 - e - 0.50 - D2 0.77 0.92 1.02 E2 1.30 1.45 1.55 K 0.15 - - L 0.20 0.30 0.40 aaa - 0.05 - bbb - 0.10 - ccc - 0.10 - ddd - 0.05 - eee - 0.08 - Figure 35. DFN6 (2x2) recommended footprint 7733060 revE DS10321 - Rev 3 page 18/32 LDL112 DFN6 (2x2) packing information 8.4 DFN6 (2x2) packing information Figure 36. DFN6 (2 x 2 mm) reel outline Table 9. DFN6 (2 x 2 mm) tape and reel mechanical data Dim. mm Min. Typ. A 180 C 12.8 D 20.2 N 60 13.2 T DS10321 - Rev 3 Max. 14.4 A0 2.4 B0 2.4 K0 1.3 P0 4 P 4 page 19/32 LDL112 SO8 package information 8.5 SO8 package information Figure 37. SO-8 batwing package outline 0016023_G Table 10. SO-8 batwing mechanical data Dim. mm Min. Typ. A 1.75 A1 0.10 A2 1.25 b 0.31 0.51 b1 0.28 0.48 c 0.10 0.25 c1 0.10 0.23 D 4.80 4.90 5.00 E 5.80 6.00 6.20 E1 3.80 3.90 4.00 e 0.25 1.27 h 0.25 0.50 L 0.40 1.27 L1 1.04 L2 0.25 k ccc DS10321 - Rev 3 Max. 0° 8° 0.10 page 20/32 LDL112 SO8 package information Figure 38. SO-8 batwing recommended footprint 0016023_GU DS10321 - Rev 3 page 21/32 LDL112 SO8-batwing packing information 8.6 SO8-batwing packing information Figure 39. SO8-batwing tape and reel outline Table 11. SO8-batwing mechanical data Dim. mm Min. A Max. 330 C 12.8 D 20.2 N 60 T DS10321 - Rev 3 Typ. 13.2 22.4 A0 8.1 8.5 B0 5.5 5.9 K0 2.1 2.3 P0 3.9 4.1 P 7.9 8.1 page 22/32 LDL112 PPAK package information 8.7 PPAK package information Figure 40. PPAK package outline 0078180_F DS10321 - Rev 3 page 23/32 LDL112 PPAK package information Table 12. PPAK mechanical data Dim. mm Min. Max. A 2.2 2.4 A1 0.9 1.1 A2 0.03 0.23 B 0.4 0.6 B2 5.2 5.4 C 0.45 0.6 C2 0.48 0.6 D 6 6.2 D1 E 5.1 6.4 6.6 E1 4.7 e 1.27 G 4.9 5.25 G1 2.38 2.7 H 9.35 10.1 L2 0.8 L4 0.6 L5 1 2.8 R 0.20 0° 1 1 L6 V2 DS10321 - Rev 3 Typ. 8° page 24/32 LDL112 PPAK packing information 8.8 PPAK packing information Figure 41. PPAK tape outline 10 pitches cumul ative tolerance on tape +/- 0.2 mm T P0 Top cover tape P2 D E F B1 K0 For machine ref. only including d raft and radii con centric around B0 W B0 A0 P1 D1 User direction of feed R Bending radius User direction of feed AM08852v1 DS10321 - Rev 3 page 25/32 LDL112 PPAK packing information Figure 42. PPAK reel outline Table 13. PPAK mechanical data Tape Dim. mm mm Dim. Min. Max. A0 6.8 7 A B0 10.4 10.6 B 1.5 12.1 C 12.8 1.6 D 20.2 G 16.4 50 B1 DS10321 - Rev 3 Reel Min. Max. 330 13.2 D 1.5 D1 1.5 E 1.65 1.85 N F 7.4 7.6 T K0 2.55 2.75 P0 3.9 4.1 Base qty. 2500 P1 7.9 8.1 Base qty. 2500 P2 1.9 2.1 R 40 T 0.25 0.35 W 15.7 16.3 18.4 22.4 page 26/32 LDL112 Ordering information 9 Ordering information Table 14. Order codes DFN6 (3x3) DFN6 (2x2) SO8-batwing PPAK LDL112PV10R LDL112PU10R LDL112D10R 1.0 LDL112PV12R LDL112PU12R LDL112D12R 1.2 LDL112PV15R LDL112PV18R 1.5 LDL112PU18R LDL112D18R 1.8 LDL112PU30R DS10321 - Rev 3 Output voltage (V) 3.0 LDL112PV33R LDL112PU33R LDL112D33R LDL112PVR LDL112PUR LDL112DR 3.3 LDL112PT-TR Adj page 27/32 LDL112 Revision history Table 15. Document revision history Date Revision Changes 21-Nov-2014 1 Initial release. 28-Oct-2016 2 Updated Figure 32. DFN6 (2x2) package outline. Modified Table 9. Order codes. Minor text changes. 20-Feb-2019 DS10321 - Rev 3 3 Updated Table 14. Order codes. page 28/32 LDL112 Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Typical application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5 Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.1 Thermal and short-circuit protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.2 Output voltage setting for ADJ version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.3 Reverse current protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 9 8.1 DFN6 (3x3) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8.2 DFN6 (3x3) packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8.3 DFN6 (2x2) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8.4 DFN6 (2x2) packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.5 SO8-batwing package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.6 SO8-batwing packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.7 PPAK package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8.8 PPAK packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 DS10321 - Rev 3 page 29/32 LDL112 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . Absolute maximum ratings . . . . . . . . . . . . . . . . . . Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . LDL112 electrical characteristics (fixed version) . . . . LDL112 electrical characteristics (adjustable version) DFN6 (3x3) mechanical data . . . . . . . . . . . . . . . . . DFN6 (3x3) tape and reel mechanical data . . . . . . . DFN6 (2x2) mechanical data . . . . . . . . . . . . . . . . . DFN6 (2 x 2 mm) tape and reel mechanical data . . . SO-8 batwing mechanical data . . . . . . . . . . . . . . . SO8-batwing mechanical data . . . . . . . . . . . . . . . . PPAK mechanical data . . . . . . . . . . . . . . . . . . . . . PPAK mechanical data . . . . . . . . . . . . . . . . . . . . . Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . Document revision history . . . . . . . . . . . . . . . . . . . DS10321 - Rev 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . 5 . 5 . 6 . 7 14 16 18 19 20 22 24 26 27 28 page 30/32 LDL112 List of figures List of figures Figure 2. Figure 3. Figure 4. Figure 5. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. DS10321 - Rev 3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin connection DFN6 (3x3) and DFN6 (2x2) (top view) . . . . Pin connection PPAK and SO8 (top view) . . . . . . . . . . . . . Typical application circuits . . . . . . . . . . . . . . . . . . . . . . . . Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 5 mA). Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 1.2 A). Output voltage vs. temperature (VOUT = VADJ, IOUT = 5 mA) . Output voltage vs. temperature (VOUT = VADJ, IOUT = 1.2 A) . Line regulation vs. temperature. . . . . . . . . . . . . . . . . . . . . Load regulation vs. temperature . . . . . . . . . . . . . . . . . . . . Quiescent current vs. temperature (IOUT = 0 mA) . . . . . . . . Quiescent current vs. temperature (IOUT = 1.2 A) . . . . . . . . Shutdown current vs. temperature. . . . . . . . . . . . . . . . . . . Quiescent current vs. load current . . . . . . . . . . . . . . . . . . . Dropout voltage vs. temperature (IOUT = 600 mA) . . . . . . . . Dropout voltage vs. temperature (IOUT = 1.2 A) . . . . . . . . . . Dropout voltage vs. load current . . . . . . . . . . . . . . . . . . . . Short-circuit current vs. input voltage . . . . . . . . . . . . . . . . . Enable thresholds vs. temperature . . . . . . . . . . . . . . . . . . SVR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output noise spectral density . . . . . . . . . . . . . . . . . . . . . . Stability plan vs. Cout, ESR. . . . . . . . . . . . . . . . . . . . . . . . Line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Enable transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Turn-on time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DFN6 (3x3) package outline . . . . . . . . . . . . . . . . . . . . . . . DFN6 (3x3) recommended footprint. . . . . . . . . . . . . . . . . . DFN6 (3x3) tape outline. . . . . . . . . . . . . . . . . . . . . . . . . . DFN6 (3x3) reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . DFN6 (2x2) package outline . . . . . . . . . . . . . . . . . . . . . . . DFN6 (2x2) recommended footprint. . . . . . . . . . . . . . . . . . DFN6 (2 x 2 mm) reel outline . . . . . . . . . . . . . . . . . . . . . . SO-8 batwing package outline . . . . . . . . . . . . . . . . . . . . . SO-8 batwing recommended footprint . . . . . . . . . . . . . . . . SO8-batwing tape and reel outline . . . . . . . . . . . . . . . . . . PPAK package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . PPAK tape outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PPAK reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . 3 . 3 . 4 . 9 . 9 . 9 . 9 10 10 10 10 10 10 11 11 11 11 11 11 12 12 12 12 12 12 13 14 15 16 17 18 19 20 21 22 23 25 26 page 31/32 LDL112 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2019 STMicroelectronics – All rights reserved DS10321 - Rev 3 page 32/32