ld39050xx12 STMicroelectronics, ld39050xx12 Datasheet
ld39050xx12
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ld39050xx12 Summary of contents
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... Power supply rejection low frequencies and starts to Table 1. Device summary Part numbers LD39050XX LD39050XX10 LD39050XX12 LD39050XX25 LD39050XX33 March 2009 500 mA low quiescent current low noise voltage regulator DFN6 ( mm) roll off at 10 kHz. An Enable logic control function puts the LD39050 in shut-down mode allowing a total current consumption lower than 1 µ ...
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Contents 1 Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Diagrams Figure 1. Schematic diagram for the LD39050PU IN IN BandGap BandGap reference reference EN EN Figure 2. Schematic diagram for the LD39050PUxx IN IN BandGap BandGap reference reference EN EN Power-good Power-good Current Current OpAmp OpAmp limit limit ...
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Pin configuration Figure 3. Pin connection (top view) EN GND PG LD39050PUxx Table 2. Pin description Pin n° Symbol LD39050PU LD39050PUxx EN 1 GND OUT ADJ GND EXP ...
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Maximum ratings Table 3. Absolute maximum ratings Symbol V DC input voltage output voltage OUT EN Enable pin PG Power Good pin ADJ Adjust pin I Output current OUT P Power dissipation D T Storage temperature ...
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Electrical characteristics ° 1 specified. Table 6. Electrical characteristics for the LD39050PU Symbol Parameter V Operating input voltage accuracy ADJ ADJ I Adjust pin current ADJ ΔV ...
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Table 6. Electrical characteristics for the LD39050PU (continued) Symbol Parameter Enable input logic low V EN Enable input logic high I Enable pin input current EN (4) t Turn on time ON Thermal shutdown T SHDN Hysteresis C Output capacitor ...
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° otherwise specified. Table 7. Electrical characteristics for the LD39050PUxx Symbol Parameter V Operating input voltage accuracy OUT OUT ΔV Static line regulation OUT ΔV Transient line regulation OUT ...
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Table 7. Electrical characteristics for the LD39050PUxx (continued) Symbol Parameter Enable input logic low V EN Enable input logic high I Enable pin input current EN (4) t Turn on time ON Thermal shutdown T SHDN Hysteresis C Output capacitor ...
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Typical performance characteristics Figure 4. V accuracy ADJ 0.85 0.85 0.84 0.84 0.83 0.83 0.82 0.82 0.81 0.81 0.8 0.8 0.79 0.79 0.78 0.78 0. ...
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Figure 10. Output voltage vs. input voltage 0.9 0.9 0.8 0.8 0.7 0.7 0.6 0.6 0.5 0.5 0.4 0.4 0.3 0.3 0.2 0.2 0.1 0 ...
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Figure 16. Line regulation 0.04 0.04 0.03 0.03 0.02 0.02 0.01 0. -0.01 -0.01 -0.02 -0.02 -0.03 -0. from 3 5 from 3 5 2.5 ...
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Figure 22. Supply voltage rejection vs. frequency 100 100 from 2 3 from 2 ...
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Figure 28. Load transient V V OUT OUT I I OUT OUT 3 from 100 OUT µF IN OUT Figure 30. Startup ...
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Application information The LD39050 is an ultra low dropout linear regulator. It provides up to 500 mA with a low 200 mV dropout. The input voltage range is from 1 5.5 V. The device is available in ...
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For the adjustable version, the output voltage can be adjusted from 0 the input voltage minus the voltage drop across the PMOS (dropout voltage), by connecting a resistor divider between the ADJ pin and the output, thus ...
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PG pin goes to low impedance. If the device is functioning well, the Power ADJ Good pin is at high impedance. If the output voltage is fixed using an external or internal resistor divider, the Power Good threshold ...
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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 ...
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DFN6 (3x3 mm) mechanical data mm. Dim. Min. Typ. A 0.80 0. 0.02 A3 0.20 b 0.23 0.30 D 2.90 3.00 D2 2.23 2.38 E 2.90 3.00 E2 1.50 1.65 e 0.95 L 0.30 0.40 inch. Max. Min. ...
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Tape & reel QFNxx/DFNxx (3x3) mechanical data Dim. Min 12 20/24 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 18.4 3.3 3.3 1 inch. Typ. ...
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Figure 36. DFN6 (3x3) footprint recommended data 21/24 ...
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Different output voltage versions of the LD39050xx available on request Table 8. Options available on request Order codes LD39050PU105R LD39050PU15R LD39050PU18R 22/24 Output voltages 1.05 V 1.5 V 1.8 V ...
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Revision history Table 9. Document revision history Date Revision 11-Mar-2009 1 Changes Initial release. 23/24 ...
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... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...