LDK715PU33R

LDK715 High input voltage 85 mA LDO linear regulator Datasheet - production data Applications • Mobile phones • Industrial • battery-powered systems 627/ 3x3 ')1[PP Description Features • 4.3 V to 24 V input voltage • Low-dropout voltage (500 mV typ. at 85 mA) • Very low quiescent current (5 µA typ. at full load) • 85 mA guaranteed output current • Output voltages 3.3 V, 4.2 V and 5.0 V (other versions available on request) The LDK715 is a high voltage, ultra low quiescent current and low drop linear regulator capable of providing an output current in excess of 85 mA. The device operates over an input voltage range from 4.3 V to 24 V, and it is stable with output ceramic capacitors. Fault condition protection includes short-circuit current limitation. The ultra low quiescent current of 5 µA at full load makes it highly suitable for low power applications and battery-powered systems. The wide input voltage range makes the LDK715 an ideal solution for low power industrial applications. The LDK715 is available in SOT23-5, or DFN8 3x3 - 8 leads. • Compatible with ceramic output capacitors from 0.47 µF to 10 µF • Internal current limit • Packages: SOT23-5L and DFN8 3x3 • Temperature range: from -40 °C to 125 °C Table 1. Device summary Order codes Output voltage SOT23-5L DFN8 3x3 LDK715M33R LDK715PU33R 3.3 V LDK715M42R LDK715PU42R 4.2 V LDK715M50R LDK715PU50R 5.0 V April 2020 This is information on a product in full production. DocID026678 Rev 3 1/19 www.st.com Contents LDK715 Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.1 External capacitor requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 Power dissipation and junction temperature . . . . . . . . . . . . . . . . . . . . . . . 7 5 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 9 2/19 7.1 SOT23-5L package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 7.2 DFN8 3x3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Packaging information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8.1 Tape and reel SOT23-5L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8.2 Tape and reel DFN8 3x3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 DocID026678 Rev 3 LDK715 1 Diagram Diagram Figure 1. Block diagram 9,1 9287 %LDV JHQHUDWRU &XUUHQW OLPLW 7KHUPDO SURWHFWLRQ 23$03 %DQGJDS UHIHUHQFH *1' DocID026678 Rev 3 3/19 19 Pin configuration 2 LDK715 Pin configuration Figure 2. Pin connection (top view) 627/ ')1[ Table 2. Pin description for DFN8 3x3 Symbol Pin number Name and function IN 1 Input voltage NC 2, 3, 5, 6, 7 Not internally connected GND 4 Common ground OUT 8 Output voltage Exp. pad Leave floating or connect to GND Table 3. Pin description for SOT23-5L 4/19 Symbol Pin number Name and function IN 4 Input voltage NC 1.3 Not internally connected GND 2 Common ground OUT 5 Output voltage DocID026678 Rev 3 LDK715 3 Maximum ratings Maximum ratings Table 4. Absolute maximum ratings Symbol Parameter Value Unit VIN DC input voltage From -0.3 to 26 V VOUT DC output voltage From -0.3 to VIN +0.3 V IOUT Continuous output current According to package power dissipation A Maximum power dissipation, DFN package 2 Maximum power dissipation, SOT23-5L package 0.45 TSTG Storage temperature range -65 to 150 °C TOP Operating junction temperature range -40 to 125 °C PD(1), (2) W 1. PD is based on an operating temperature of 25 °C or less. It must be derated according to the operating temperature. 2. The LDK715 has an internal constant current limit feature. Take care not to exceed the power dissipation ratings of the package also during current limit and short-circuit events. Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Table 5. Thermal data Symbol Parameter SOT23-5L DFN8 Unit RthJA Thermal resistance junction ambient 195 52 °C/W DocID026678 Rev 3 5/19 19 Electrical characteristics 4 LDK715 Electrical characteristics TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = 0.1 µF, COUT = 1 µF, IOUT = 1 mA, unless otherwise specified(a). Table 6. Electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit 4.3 - 24 V VIN = VOUT(NOM)+1 to 24 V, TJ = -40 °C to 125 °C 0 - 85 mA TJ = 25 °C -1 - +1 VIN = VOUT(NOM)+1 to 24 V, TJ = - 40 °C to 125 °C -2 - +2 VIN Operating input voltage IOUT = 85 mA, TJ = -40 °C to 125 °C IOUT Output current VOUT VOUT accuracy(1) ΔVOUT Line regulation VIN = VOUT(NOM) +1 to 24 V to 24 V, IOUT = 1 mA, TJ = -40 °C to 125 °C - 0.001 0.004 ΔVOUT Load regulation IOUT = 100 µA to 85 mA, TJ = -40 °C to 125 °C - 0.002 0.003 %/mA VDROP Drop output voltage(2) IOUT = 85 mA, TJ = -40 °C to 125 °C - 500 1000 mV eN Output noise voltage(3) 200 Hz to 100 kHz, IOUT = 50 mA, COUT = 10 µF, TJ =-40 °C to 125 °C - - 210 µVRMS - SVR Supply voltage rejection % %/V VIN = VOUT(NOM) +1 V +/- VRIPPLE, VRIPPLE = 0.2 V, IOUT = 1 mA, COUT = 10 µF f = 1 kHz - 38 TJ = -40 °C to 125 °C f = 100 kHz - 57 - 5 7 - - 8.5 120 - - mA - 0.7 - ms 0.47 - - µF IQ Quiescent current IOUT = 0 mA to 85 mA, TJ = -40 °C to 125 °C ISC Short-circuit current VOUT = 0, TJ = -40 °C to 125 °C VIN = VOUT(NOM) +1 to 24 V TON Turn on time (4) VIN = VOUT(NOM) +1 to 24 V, COUT = 10 µF, IOUT = 60 mA, TJ = -40 °C to 125 °C COUT Output capacitor Capacitance f = 100 kHz VIN = 24 V dB µA 1. For VOUT(NOM) < 3.3 V, VIN = 4.3 V. 2. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. 3. Guaranteed by design. 4. Turn-on time is time measured between the input just exceeding 90% of its final value and the output voltage just reaching 95% of its nominal value. a. For VOUT(NOM) < 3.3 V, VIN = 4.3 V. 6/19 DocID026678 Rev 3 LDK715 4.1 Electrical characteristics External capacitor requirements A 0.1 µF or a larger input bypass capacitor, connected between IN and GND and located close to the device, is recommended. In this manner, the transient response and noise rejection of the power supply, as a whole, improve. A higher value of the input capacitor may be necessary if large, fast-rise-time load transients are present in the application and if the device is several inches far from the power source. The LDK715 requires an output capacitor connected between OUT and GND to stabilize the internal control loop. Please refer to Figure 7. for the allowable output capacitance and ESR combinations. 4.2 Power dissipation and junction temperature For a reliable operation, junction temperature should not exceed 125 °C. This limits the power dissipation the regulator can handle in any application. To guarantee that the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, PD(max), and the dissipation, PD, which must be less than or equal to PD(max). The maximum power dissipation limit is given by the following equation: Equation 1 P D ( max ) = ( T JMAX – T A ) ⁄ R thJA where: TJMAX is the maximum allowable junction temperature RthJA is the thermal resistance junction to ambient for the package TA is the ambient temperature The regulator dissipation is calculated by the following equation: Equation 2 P D = ( V IN – V out ) × I out Power dissipation coming from quiescent current is negligible. The ST715 features the internal current limit. During normal operation, it limits the output current to approximately 350 mA. When the current limit engages, the output voltage scales back linearly until the overcurrent condition ends. Do not exceed the power dissipation ratings of the package. DocID026678 Rev 3 7/19 19 Typical application 5 LDK715 Typical application Figure 3. Application circuit 8/19 DocID026678 Rev 3 LDK715 Typical performance characteristics 6 Typical performance characteristics Figure 4. Output voltage vs. temperature Figure 5. Output voltage vs. input voltage 3.5 3.5 IOUT=1mA 3.45 2.5 VOUT [V] 3.4 VOUT [V] 3 IOUT=85mA 3.35 3.3 2 1.5 1 3.25 0.5 3.2 VIN=VOUT(NOM)+1V 3.15 -50 0 50 100 VIN=VOUT(NOM)+1V 0 0 150 1 2 Temp [°C] 4 5 6 VIN [V] Figure 6. Dropout voltage vs. output current Figure 7. COUT stability region 9,1 IURPWR9,287 P$WRP$&,1 —)7D ƒ&          ^ZΛϭϬϬ