LDL112PU15R

LDL112 STMICROELECTRONICS | Alldatasheet

Document overview

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• PDF pages: 32

Technical content

Datasheet sections

• 1 Diagram
• 2 Pin configuration
• 3 Typical application
• 4 Maximum ratings
• 5 Electrical characteristics
• 6 Application information
• 6.1 Thermal and short-circuit protections
• 6.2 Output voltage setting for ADJ version
• 6.3 Reverse current protection
• 7 Typical performance characteristics
• 8 Package information
• 8.1 DFN6 (3x3) package information
• 8.2 DFN6 (3x3) packing information
• 8.3 DFN6 (2x2) package information
• 8.4 DFN6 (2x2) packing information
• 8.5 SO8-batwing package information
• 8.6 SO8-batwing packing information
• 8.7 PPAK package information
• 8.8 PPAK packing information
• 9 Ordering information
• 10 Revision history

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

 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.

1 Diagram

Figure 1: Block diagram (*) The output discharge function is optional.

2 Pin configuration

Figure 2: Pin connection DFN6 (3x3) and DFN6 (2x2) (top view) Figure 3: Pin connection PPAK and SO8 (top view) Table 1: Pin description Symbol Function VIN LDO input voltage GND Common ground EN Enable pin logic input: low = shutdown, high = active ADJ Adjustable pin (on adjustable version) VOUT LDO output voltage Exposed pad Must be connected to GND NC Not connected

LDL112 Typical application

3 Typical application

Figure 4: Typical application circuits

4 Maximum ratings

Table 2: Absolute maximum ratings Symbol Parameter Value Unit VIN DC input voltage - 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 PD Power dissipation Internally limited mW 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 Notes: (1)Considering 6 cm² of copper board heatsink.

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 Parameter Test conditions Min. Typ. Max. Unit VIN Operating input voltage 1.6 5.5 V VOUT VOUT accuracy IOUT = 5 mA, TJ = 25 °C -2.0 2.0 % IOUT = 5 mA, -40 °C < TJ < 125 °C -3.0 3.0 % ΔVOUT Static line regulation (1) VOUT(NOM) + 0.5 V < VIN ≤ 5.5 V (2) 0.05 0.1 %/V ΔVOUT Static load regulation IOUT = 0 mA to 1.2 A, VIN > 2.1 V 15 30 mV VDROP Dropout voltage (3) IOUT = 1 A, VOUT = 3.3 V 300 mV IOUT = 1.2 A,VOUT = 3.3 V 40 °C < TJ < 125 °C 350 600 eN Output noise voltage 10 Hz to 100 kHz, IOUT = 10 mA 135 µVRMS SVR Supply voltage rejection VIN = VOUT(NOM) + 0.5 V (2) +/- VRIPPLE VRIPPLE = 0.2 V frequency = 1 kHz, IOUT = 10 mA dB IQ Quiescent current IOUT = 0 mA,-40 °C < TJ <125 °C 35 70 µA IOUT = 1.2 A, VOUT(NOM) + 1 V (2) 40 °C < TJ < 125 °C 250 400 VIN input current in off mode: VEN = GND 0.1 1 ISC Short-circuit current RL = 0, VIN > 2.1 V 1.4 2 A VEN Enable input logic low VIN = VOUT(NOM) + 0.5 V (2) to 5.5 V, -40 °C < TJ < 125 °C 0.35 V Enable input logic high VIN = VOUT(NOM) + 0.5 V (2) to 5.5 V -40 °C < TJ < 125 °C 1.4 IEN Enable pin input current VEN = VIN 100 nA TSHDN Thermal shutdown 165 Hysteresis COUT Output capacitor Capacitance (see Section 7: "Typical performance characteristics") 10 µF Notes: (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.

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 Parameter Test conditions Min. Typ. Max. Unit VIN Operating input voltage 1.6 5.5 V VADJ VADJ accuracy IOUT = 5 mA, TJ = 25 °C 784 800 816 mV IOUT = 5 mA, -40 °C < TJ < 125 °C -3.0 3.0 % ΔVOUT Static line regulation (1) IOUT = 1 mA 0.05 0.1 %/V ΔVOUT Static load regulation IOUT = 0 mA to 1.2 A,VIN > 2.1 V 6 20 mV VDROP Dropout voltage (3) IOUT = 1 A, VOUT = 3.3 V 300 mV IOUT = 1.2 A,VOUT = 3.3 V 40 °C < TJ < 125 °C 350 600 eN Output noise voltage 10 Hz to 100 kHz, IOUT = 10 mA µVRMS IADJ Adjust pin current 0.130 1 µA SVR Supply voltage rejection VIN = VOUTNOM + 0.5 V (2) +/- VRIPPLE VRIPPLE = 0.2 V frequency = 1 kHz IOUT = 10 mA dB IQ Quiescent current IOUT = 0 mA,-40 °C < TJ < 125 °C 35 70 µA IOUT = 1.2 A, 2.1 V < VIN < 5.5 V, -40 °C < TJ < 125 °C 240 400 VIN input current in off mode: VEN = GND 0.1 1 ISC Short-circuit current RL = 0, VIN > 2.1 V 1.4 2 A VEN Enable input logic low VIN = 2 V (2) to 5.5 V, -40 °C < TJ < 125 °C 0 0.35 V Enable input logic high VIN = 2 V (2) to 5.5 V, -40 °C < TJ < 125 °C 1.4 IEN Enable pin input current VEN = VIN 100 nA TSHDN Thermal shutdown 165 Hysteresis COUT Output capacitor Capacitance (see Section 7: "Typical performance characteristics") 10 µF Notes: (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.

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 hysteres is 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

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 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. PDMAX = (125 -TAMB)/RTHJA

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 V OUT and therefore all possible current paths from VOUT to VIN are interrupted. 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.

LDL112 Typical performance characteristics

7 Typical performance characteristics

(CIN = COUT = 1 µF, VEN to VIN, T = 25 °C unless otherwise specified) Figure 5: Output voltage vs temperature (VOUT = 3.3 V, IOUT = 5 mA) Figure 6: Output voltage vs temperature (VOUT = 3.3 V, IOUT = 1.2 A) Figure 7: Output voltage vs temperature (VOUT = VADJ, IOUT = 5 mA) Figure 8: Output voltage vs temperature (VOUT = VADJ, IOUT = 1.2 A) Figure 9: Line regulation vs temperature Figure 10: Load regulation vs temperature AM14040V1VIN=3.8V, IOUT=5mA, VOUT=3.3V 3.1 3.2 3.3 3.4 3.5 3.6 -60 -40 -20 0 20 40 60 80 100 120 140 Output Voltage [V] Temperature [°C] AM14041V1 3.1 3.2 3.3 3.4 3.5 3.6 -60 -40 -20 0 20 40 60 80 100 120 140 Output Voltage [V] Temperature [°C] VIN=3.8V, IOUT=1.2A, VOUT=3.3V AM14042V1 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 -60 -40 -20 0 20 40 60 80 100 120 140 Output Voltage [V] Temperature [°C] VIN=1.6V, IOUT=5mA, VOUT=VADJ AM14043V1 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 -60 -40 -20 0 20 40 60 80 100 120 140 Output Voltage [V] Temperature [°C] VIN=2V, IOUT=1.2A, VOUT=VADJ AM14044V1VIN=3.8Vto 5.5V, IOUT=1.2A, VOUT=3.3V 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 -60 -40 -20 0 20 40 60 80 100 120 140 Lineregulation[%/V] Temperature [°C] AM14045V1VIN=3.8V, IOUT=from0mAto1.2A , VOUT=3.3V -60 -40 -20 0 20 40 60 80 100 120 140 Loadregulation[mV] Temperature [°C]

8 Package information

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 27: DFN6 (3x3) package outline

Table 6: DFN6 (3x3) mechanical data Dim. mm Min. Typ. Max. A 0.80 A1 0 0.02 0.05 0.20 b 0.23 0.45 D 2.90 3 3.10 D2 2.23 2.50 E 2.90 3 3.10 E2 1.50 1.75 e 0.95 L 0.30 0.40 0.50 Figure 28: DFN6 (3x3) recommended footprint

8.2 DFN6 (3x3) packing information

Figure 29: DFN6 (3x3) tape outline 7875978_N

Figure 30: DFN6 (3x3) reel outline Table 7: DFN6 (3x3) tape and reel mechanical data Dim. mm Min. Typ. Max. A0 3.20 3.30 3.40 B0 3.20 3.30 3.40 K0 1 1.10 1.20 7875978_N

8.3 DFN6 (2x2) package information

Figure 31: DFN6 (2x2) package outline

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 32: DFN6 (2x2) recommended footprint 7733060 revE

8.4 DFN6 (2x2) packing information

Figure 33: DFN6 (2x2) reel outline Table 9: DFN6 (2x2) tape and reel mechanical data Dim. mm Min. Typ. Max. A 180 C 12.8 13.2 D 20.2 N 60 T 14.4 A0 2.4 B0 2.4 K0 1.3 P0 4 P 4

8.5 SO8-batwing package information

Figure 34: SO-8 batwing package outline Table 10: SO-8 batwing mechanical data Dim. mm Min. Typ. Max. A 1.75 A1 0.10 0.25 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 1.27 h 0.25 0.50 L 0.40 1.27 L1 1.04 L2 0.25 k 0° 8° ccc 0.10

Figure 35: SO-8 batwing recommended footprint

8.6 SO8-batwing packing information

Figure 36: SO8-batwing tape and reel outline Table 11: SO8-batwing mechanical data Dim. mm Min. Typ. Max. A 330 C 12.8 13.2 D 20.2 N 60 T 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

8.7 PPAK package information

Figure 37: PPAK package outline

Table 12: PPAK mechanical data Dim. mm Min. Typ. 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 5.1 E 6.4 6.6 4.7 e 1.27 G 4.9 5.25 G1 2.38 2.7 H 9.35 10.1 0.8 1 L4 0.6 L5 1 2.8 R 0.20 V2 0°

8.8 PPAK packing information

Figure 38: PPAK tape outline Figure 39: PPAK reel outline

Table 13: PPAK mechanical data Tape Reel Dim. mm Dim. mm Min. Max. Min. Max. A0 6.8 7 A 330 B0 10.4 10.6 B 1.5 B1 12.1 C 12.8 13.2 D 1.5 1.6 D 20.2 D1 1.5 G 16.4 18.4 E 1.65 1.85 N 50 F 7.4 7.6 T 22.4 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

9 Ordering information

Table 14: Order codes DFN6 (3x3) DFN6 (2x2) SO8-batwing PPAK Output voltage (V) LDL112PV10R LDL112PU10R LDL112D10R 1.0 LDL112PV12R LDL112PU12R LDL112D12R 1.2 LDL112PV15R LDL112PU15R LDL112D15R 1.5 LDL112PV18R LDL112PU18R LDL112D18R 1.8 LDL112PV25R LDL112PU25R LDL112D25R 2.5 LDL112PV30R LDL112PU30R LDL112D30R 3.0 LDL112PV33R LDL112PU33R LDL112D33R 3.3 LDL112PVR LDL112PUR LDL112DR LDL112PT-TR Adj

Table 15: Document revision history Date Revision Changes 21-Nov-2014 1 Initial release. 28-Oct-2016 2 Updated Figure 31: "DFN6 (2x2) package outline". Modified Table 14: "Order codes". Minor text changes.