LD39020 STMICROELECTRONICS | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 30
Technical content
Datasheet sections
- 1 Diagram
- 2 Pin configuration
- 3 Typical application
- 4 Maximum ratings
- 5 Electrical characteristics
- 6 Application information
- 6.1 Soft start function
- 6.2 Output discharge function
- 6.3 Input and output capacitors
- 7 Typical characteristics
- 8 Package information
- 8.1 DFN4 1x1-4L package information
- 8.2 SOT23-5L package information
- 8.3 SOT23-5L packing information
- 9 Order code
- 10 Revision history
Features
Input voltage from 1.5 to 5.5 V Ultra low dropout voltage (200 mV typ. at 200 mA load) Very low quiescent current (20 µA typ at no load, 0.03 µA typ in off mode) Output voltage tolerance: ±0.5% (A version) or ± 2.0% @ 25 °C (standard version) 200 mA guaranteed output current High PSRR (80 dB@1 kHz, 50 db@100 kHz) Wide range of output voltages available on request: from 0.8 V up to 5.0 V in 50 mV step Logic-controlled electronic shutdown Internal soft-start Optional output voltage discharge feature Compatible with ceramic capacitor COUT = 0.47 µF Internal constant current and thermal protections Available in DFN 1x1-4L and SOT23-5L Operating temperature range: -40 °C to 125 °C
Applications
Mobile phones Personal digital assistants (PDAs) Digital still cameras (DSC) Cordless phones and similar battery- powered systems Portable media players
Description
The LD39020 high accuracy voltage regulator provides 200 mA of maximum current from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of 200 mV. It is available in DFN 1x1-4L and SOT23-5L packages, allowing the maximum space saving. The device is stabilized with a ceramic capacitor on the output. The ultra low drop voltage, low quiescent current and low noise features, together with the internal soft-start circuit, make the LD39020 suitable for low power battery- operated applications. An enable logic control function puts the LD39020 in shutdown mode allowing a total current consumption lower than 0.1 µA. Constant current and thermal protection are provided. DFN1x1-4L SOT23-5L
1 Diagram
Figure 1: Block diagram The output discharge MOSFET is optional.
2 Pin configuration
Figure 2: Pin connection (top view) Table 1: Pin description Pin n° DFN1x1-4L Pin n° SOT23-5L Symbol Function 1 5 OUT Output voltage 2 2 GND Common ground 3 3 EN Enable pin logic input: low = shutdown, High = active 4 1 IN Input voltage Thermal pad - GND Connect to GND on the PCB - 4 NC Not connected
LD39020 Typical application
3 Typical application
Figure 3: Typical application circuits
4 Maximum ratings
Table 2: Absolute maximum ratings Symbol Parameter Value Unit VIN Input voltage - 0.3 to 7 V VOUT Output voltage - 0.3 to VIN + 0.3 V VEN Enable input voltage - 0.3 to 7 V IOUT Output current Internally limited mA PD Power dissipation Internally limited mW TSTG Storage temperature range - 40 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 Value Unit RthJA Thermal resistance junction-ambient, DFN1x1-4L 250 °C/W RthJC Thermal resistance junction-case, SOT23-5L 81 °C/W RthJA Thermal resistance junction-ambient, SOT23-5L 255 °C/W Table 4: ESD Performance Symbol Parameter Test conditions Value Unit ESD ESD Protection voltage HBM 4 kV MM 400 V CDM 500 V
5 Electrical characteristics
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 LD39020T, LD39020DT Symbol Parameter Test conditions Min. Typ. Max. Unit VIN Operating input voltage 1.5 5.5 V VOUT VOUT accuracy IOUT = 1 mA, TJ = 25 °C -2 2 % IOUT = 1 mA,-40 °C<TJ<125 °C -3 3 % ∆VOUT Static line regulation(1) VOUT(NOM) + 1 V ≤ VIN ≤ 5.5 V, IOUT = 10 mA 0.02 %/V -40 °C<TJ<125 °C 0.2 ∆VOUT Static load regulation IOUT = 0 mA to 200 mA mV -40 °C<TJ<125 °C 0.01 %/mA VDROP Dropout voltage IOUT = 30 mA,VOUT = 2.8 V mV IOUT = 200 mA, VOUT = 2.8 V -40 °C<TJ<125 °C 200 350 eN Output noise voltage 10 Hz to 100 kHz, IOUT = 10 mA µVRM S SVR Supply voltage rejection VIN = VOUT(NOM)+ 1 V +/- VRIPPLE VRIPPLE = 0.2 V Freq .=1 kHz IOUT = 30 mA dB VIN = VOUT(NOM)+ 1 V +/- VRIPPLE VRIPPLE = 0.2 V Freq. = 100 kHz IOUT = 30 mA IQ Quiescent current IOUT = 0 mA 20 40 µA IOUT = 200 mA 100 IStandby Standby Current VIN input current in OFF MODE: VEN = GND 0.03 1 µA ISC Short circuit current RL = 0 250 350 mA RON Output voltage discharge MOSFET (only on LD39020DT) 100 Ω VEN Enable input logic low VIN = 1.5 V to 5.5 V -40 °C<TJ<125 °C 0.4 V Enable input logic high VIN = 1.5 V to 5.5 V -40 °C<TJ<125 °C 1 IEN Enable pin input current VEN = VIN 100 nA TON(2) Turn on time 100 µs TSHDN Thermal shutdown 160 Hysteresis
Symbol Parameter Test conditions Min. Typ. Max. Unit COUT Output capacitor Capacitance (see Figure 17: "Stability area vs (COUT, ESR)") 0.47 22 µF Notes: (1)Not applicable for Vout(nom) > 4.5 V (2)Turn-on time is time measured between the enable input just exceeding VEN high value and the output voltage just reaching 95 % of its nominal value TJ = 25 °C, VIN = VOUT(NOM) + 1 V , CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless otherwise specified. Table 6: Electrical characteristics for LD39020AT, LD39020ADT Symbol Parameter Test conditions Min. Typ. Max. Unit VIN Operating input voltage 1.5 5.5 V VOUT VOUT accuracy IOUT = 1 mA, TJ = 25 °C -0.5 0.5 % IOUT = 1 mA, 1.5 % ∆VOUT Static line regulation (1) VOUT(NOM) + 1 V ≤ VIN ≤ 5.5 V, IOUT = 10 mA 0.02 %/V -40 °C<TJ<125 °C 0.2 ∆VOUT Static load regulation IOUT = 0 mA to 200 mA mV -40 °C<TJ<125 °C 0.01 %/mA VDROP Dropout voltage IOUT = 30 mA,VOUT = 2.8 V mV IOUT = 200 mA, VOUT = 2.8 V -40 °C<TJ<125 °C 200 350 eN Output noise voltage
10 Hz to 100 kHz, IOUT = 10 mA
µVRM S SVR Supply voltage rejection VIN = VOUT(NOM)+ 1 V +/- VRIPPLE VRIPPLE = 0.2 V Freq. = 1 kHz IOUT = 30 mA dB VIN = VOUT(NOM)+ 1 V +/- VRIPPLE VRIPPLE = 0.2 V Freq. = 100 kHz IOUT = 30 mA IQ Quiescent current IOUT = 0 mA 20 40 µA IOUT = 200 mA 100 IStandby Standby current VIN input current in OFF MODE: VEN = GND 0.03 1 µA ISC Short circuit current RL = 0 250 350 mA RON Output voltage discharge MOSFET (only on LD39020ADT) 100 Ω
Symbol Parameter Test conditions Min. Typ. Max. Unit VEN Enable input logic low VIN = 1.5 V to 5.5 V V Enable input logic high VIN = 1.5 V to 5.5 V -40 °C<TJ<125 °C 1 IEN Enable pin input current VEN = VIN 100 nA TON(2) Turn on time 100 µs TSHDN Thermal shutdown 160 °C Hysteresis COUT Output capacitor Capacitance (see Figure 17: "Stability area vs (COUT, ESR)") 0.47 22 µF Notes: (1)Not applicable for Vout(nom) > 4.5 V (2)Turn-on time is time measured between the enable input just exceeding VEN high value and the output voltage just reaching 95 % of its nominal value
6 Application information
6.1 Soft start function
The LD39020 has an internal soft start circuit. By increasing the startup time up to 100µs, without the need of any external soft start capacitor, this feature is able to keep the regulator inrush current at startup under control.
6.2 Output discharge function
The LD39020 integrates a MOSFET connected between Vout and GND. This transistor is activated when the EN pin goes to low logic level and has the function to quickly discharge the output capacitor when the device is disabled by the user. The device is available with or without auto-discharge feature. See Table 10: "DFN1x1-4L order codes" for more details.
6.3 Input and output capacitors
The LD39020 requires external capacitors to assure the regulator control loop stability. Any good quality ceramic capacitor can be used but, the X5R and the X7R are suggested since they guarantee a very stable combination of capacitance and ESR overtemperature. Locating the input/output capacitors as closer as possible to the relative pins is recommended. The LD39020 requires an input capacitor with a minimum value of 1 μF. This capacitor must be located as closer as possible to the input pin of the device and returned to a clean analog ground. The control loop of the LD39020 is designed to work with an output ceramic capacitor. This capacitor must meet the requirements of minimum capacitance and equivalent series resistance (ESR), as shown in Fig17. To assure stability, the output capacitor must maintain its ESR and capacitance in the stable region, over the full operating temperature range. The LD39020 shows stability with a minimum effective output capacitance of 220 nF. However, to keep stability in all operating conditions (temperature, input voltage and load variations), a minimum output capacitor of 0.47 µF is recommended. The suggested combination of 1 μF input and output capacitors offers a good compromise among the stability of the regulator, optimum transient response and total PCB area occupation.
LD39020 Typical characteristics
7 Typical characteristics
(CIN = COUT = 1 µF, VEN to VIN, TJ = 25°C unless otherwise specified) Figure 4: Output voltage vs. temperature (IOUT = 1 mA) Figure 5: Output voltage vs. temperature (IOUT = 200 mA) Figure 6: Line regulation vs. temperature Figure 7: Load regulation vs. temperature Load regulation
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 DFN4 1x1-4L package information
Figure 28: DFN 1x1-4L package outline
Table 7: DFN 1x1-4L mechanical data Dim. mm. Min. Typ. Max. A 0.34 0.37 0.40 A1 0 0.02 0.05 0.10 b 0.17 0.22 0.27 D 0.95 1.00 1.05 D2 0.43 0.48 0.53 E 0.95 1.00 1.05 E2 0.43 0.48 0.53 e 0.65 L 0.20 0.25 0.30 K 0.15
Figure 29: DFN 1x1-4L recommended footprint
8.2 SOT23-5L package information
Figure 30: SOT23-5L package outline Table 8: SOT23-5L mechanical data Dim. mm Min. Typ. Max. A 0.90 1.45 A1 0 0.15 A2 0.90 1.30 b 0.30 0.50 c 0.09 0.20 D 2.95 E 1.60 e 0.95 H 2.80 L 0.30 0.60 θ 0°
Figure 31: SOT23-5L recommended footprint Dimensions are in mm.
8.3 SOT23-5L packing information
Figure 32: SOT23-5L tape and reel outline Table 9: SOT23-5L tape and reel mechanical data Dim. mm Min. Typ. Max. A 180 C 12.8 13.0 13.2 D 20.2 N 60 T 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 Bo Ko Ao Po P DA N T
9 Order code
Table 10: DFN1x1-4L order code Order code Output voltage (V) Auto-discharge Tolerance (%) Marking LD39020ADTPU08R(1) 0.8 Yes 0.5 A1 LD39020DTPU08R 2 08 LD39020ATPU08R(1) No 0.5 B1 LD39020TPU08R(1) 2 C1 LD39020ADTPU095R(1) 0.95 Yes 0.5 A2 LD39020DTPU095R 2 95 LD39020ATPU095R(1) No 0.5 B2 LD39020TPU095R(1) 2 C2 LD39020ADTPU10R(1) Yes 0.5 A3 LD39020DTPU10R 2 10 LD39020ATPU10R(1) No 0.5 B3 LD39020TPU10R(1) 2 C3 LD39020ADTPU11R(1) 1.1 Yes 0.5 A4 LD39020DTPU11R 2 11 LD39020ATPU11R(1) No 0.5 B4 LD39020TPU11R(1) 2 C4 LD39020ADTPU12R(1) 1.2 Yes 0.5 A5 LD39020DTPU12R 2 12 LD39020ATPU12R(1) No 0.5 B5 LD39020TPU12R(1) 2 C5 LD39020ADTPU13R 1.3 Yes 0.5 AP LD39020DTPU13R 2 13 LD39020ATPU13R(1) No 0.5 BP LD39020TPU13R(1) 2 CP LD39020ADTPU15R(1) 1.5 Yes 0.5 A6 LD39020DTPU15R 2 15 LD39020ATPU15R(1) No 0.5 B6 LD39020TPU15R(1) 2 C6 LD39020ADTPU18R(1) 1.8 Yes 0.5 A7 LD39020DTPU18R 2 18 LD39020ATPU18R(1) No 0.5 B7 LD39020TPU18R(1) 2 C7
Order code Output voltage (V) Auto-discharge Tolerance (%) Marking LD39020ADTPU185R(1) 1.85 Yes 0.5 AR LD39020DTPU185R(1) 2 85 LD39020ATPU185R(1) No 0.5 BR LD39020TPU185R(1) 2 CR LD39020ADTPU20R(1) Yes 0.5 A8 LD39020DTPU20R 2 20 LD39020ATPU20R(1) No 0.5 B8 LD39020TPU20R(1) 2 C8 LD39020ADTPU21R(1) 2.1 Yes 0.5 A9 LD39020DTPU21R 2 21 LD39020ATPU21R(1) No 0.5 B9 LD39020TPU21R(1) 2 C9 LD39020ADTPU25R(1) 2.5 Yes 0.5 AA LD39020DTPU25R 2 25 LD39020ATPU25R(1) No 0.5 BA LD39020TPU25R(1) 2 CA LD39020ADTPU27R(1) 2.7 Yes 0.5 AB LD39020DTPU27R 2 27 LD39020ATPU27R(1) No 0.5 BB LD39020TPU27R(1) 2 CB LD39020ADTPU28R(1) 2.8 Yes 0.5 AC LD39020DTPU28R 2 28 LD39020ATPU28R(1) No 0.5 BC LD39020TPU28R(1) 2 CC LD39020ADTPU285R(1) 2.85 Yes 0.5 AD LD39020DTPU285R 2 85 LD39020ATPU285R(1) No 0.5 BD LD39020TPU285R(1) 2 CD LD39020ADTPU29R(1) 2.9 Yes 0.5 AE LD39020DTPU29R 2 29 LD39020ATPU29R(1) No 0.5 BE LD39020TPU29R(1) 2 CE LD39020ADTPU30R(1) Yes 0.5 AF LD39020DTPU30R 2 30 LD39020ATPU30R(1) No 0.5 BF LD39020TPU30R(1) 2 CF
Order code Output voltage (V) Auto-discharge Tolerance (%) Marking LD39020ADTPU31R(1) 3.1 Yes 0.5 AG LD39020DTPU31R 2 31 LD39020ATPU31R(1) No 0.5 BG LD39020TPU31R(1) 2 CG LD39020ADTPU32R(1) 3.2 Yes 0.5 AH LD39020DTPU32R(1) 2 32 LD39020ATPU32R(1) No 0.5 BH LD39020TPU32R(1) 2 CH LD39020ADTPU33R(1) 3.3 Yes 0.5 AJ LD39020DTPU33R 2 33 LD39020ATPU33R(1) No 0.5 BJ LD39020TPU33R(1) 2 CJ LD39020ADTPU36R(1) 3.6 Yes 0.5 AK LD39020DTPU36R 2 36 LD39020ATPU36R(1) No 0.5 BK LD39020TPU36R(1) 2 CK LD39020ADTPU40R(1) Yes 0.5 AL LD39020DTPU40R 2 40 LD39020ATPU40R(1) No 0.5 BL LD39020TPU40R(1) 2 CL LD39020ADTPU47R(1) 4.7 Yes 0.5 AM LD39020DTPU47R 2 47 LD39020ATPU47R(1) No 0.5 BM LD39020TPU47R(1) 2 CM LD39020ADTPU50R(1) Yes 0.5 AN LD39020DTPU50R 2 50 LD39020ATPU50R(1) No 0.5 BN LD39020TPU50R(1) 2 CN Notes: (1)Available on request.
Table 11: SOT23-5L order code Order code Output voltage (V) Auto-discharge Tolerance (%) Marking LD39020ADM30R(1) 3.0 Yes 0.5 AD30 Notes: (1)Available on request.
Table 12: Document revision history Date Revision Changes 04-Dec-2013 1 Initial release. 02-Apr-2014 2 Updated Table 10: "DFN1x1-4L order codes". 15-Jun-2015 3 Added SOT23-5L package. Modified features and description in cover page. Updated Section 7: "Pin configuration" and Table 3: "Thermal data". Added Section 13.2: "SOT23-5L package information" and Section 13.3: "SOT23-5L packing information". Minor text changes.