ld3915 STMicroelectronics, ld3915 Datasheet

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... Available on request January 2007 Ultra low drop BICMOS voltage regulator Description The LD39150 is a fast ultra low drop linear regulator which operates from 2. input supply. A wide range of output options are available. The low drop voltage, low noise, and ultra low quiescent current make it suitable for low voltage microprocessor and memory applications ...

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... Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Application notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.1 External capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.2 Input capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.3 Output capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.4 Thermal note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.5 Inhibit input operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2/19 LD39150 ...

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... LD39150 1 Diagram Figure 1. Block diagram (*) Not present on ADJ Versions Diagram 3/19 ...

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... LDO Output Voltage pins, with minimum C (also refer to C vs. ESR stability chart) O Inhibit Input Voltage: ON MODE when V 0.3V (Do not leave floating, not internally pulled down/up) Common ground Not Connected LD39150 DPAK NOTE from 1.22 to 5.0V O =1µF must be located =2.2µF needed for stability O ≥ ...

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... C Capacitors must be placed as close as possible to the IC pins Figure 3. LD39150 fixed version with inhibit 1 Inhibit Pin is not internally pulled down/up then it must not be left floating. Disable the device when connected to GND positive voltage less than 0.3V Figure 4. LD39150 adjustable version 2 Set R2 as close as possible to 4 ...

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... Typical application circuits Figure 5. LD39150 DPAK Figure 6. Timing diagram 6/19 LD39150 ...

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... LD39150 4 Maximum ratings Table 2. Absolute maximum ratings Symbol V DC Input voltage I V INHIBIT Input voltage INH V DC Output voltage O V ADJ Pin voltage ADJ I Output current O P Power dissipation D T Storage temperature range STG T Operating junction temperature range OP Note: Absolute Maximum Ratings are those values beyond which damage to the device may occur ...

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... 2.2µ 2. 10mA 2V, unless otherwise INH Min. Typ. Max. 2.5 -1.5 -3 1.22 0.04 = -40 to 125°C 0.1 0.06 0.2 40 200 = 2V INH ±0 100 170 10 LD39150 Unit O(NOM 0.2 % %/A 0 400 2 µ 0.3 V µs ±1 µA dB µV RMS °C ...

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... LD39150 6 Typical performance characteristics (T = 25° specified) Figure 7. Output voltage vs temperature Figure 9. Dropout voltage vs output current Figure 11. Quiescent current vs temperature +1V 1µ 2.2µ LOAD Figure 8. Figure 10. Quiescent current vs supply Figure 12. Quiescent current vs temperature Typical performance characteristics = 10mA, V ...

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... Figure 13. Short circuit current vs temperature Figure 14. Output voltage vs input voltage Figure 15. Stability region vs C 100kHz) Figure 17. Load transient V = 3.5V 10mA to 1.5A 1µ 10/19 & ESR (at Figure 16. Stability region Figure 18. Line transient V = 3.5V to 5.5V 2.2µ LD39150 & Low ESR O (at 100kHz) = 10mA 2.2µF LOAD O ...

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... Input capacitor An input capacitor whose minimum value is 1µF is required with the LD39150 (amount of capacitance can be increased without limit). This capacitor must be located a distance of not more than 1cm from the input pin of the device and returned to a clean analog ground. Any good quality ceramic, tantalum or film capacitors can be used for this capacitor ...

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... These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK trademark. ECOPACK specifications are available at: 12/19 www.st.com. LD39150 ® ...

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... LD39150 DIM. MIN. A 2.2 A1 0.9 A2 0.03 B 0.4 B2 5.2 C 0. 4.9 G1 2. PPAK MECHANICAL DATA mm. TYP MAX. 2.4 1.1 0.23 0.6 5.4 0.6 0.6 6.2 5.1 6.6 4.7 1.27 5.25 2.7 10.1 0 2.8 Package mechanical data inch MIN. TYP. 0.086 0.035 0.001 0.015 0.204 0.017 0.019 0.236 0.201 0.252 0.185 0.050 0.193 0.093 0.368 0.031 ...

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... DPAK MECHANICAL DATA mm. TYP MAX. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 5.1 6.6 4.7 2.28 4.6 10.1 2.8 0.8 1 inch MIN. TYP. MAX. 0.086 0.094 0.035 0.043 0.001 0.009 0.025 0.035 0.204 0.212 0.017 0.023 0.019 0.023 0.236 0.244 0.200 0.252 0.260 0.185 0.090 0.173 0.181 0.368 0.397 0.039 0.110 0.031 0.023 0.039 0068772-F LD39150 ...

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... LD39150 DIM. MIN 0.23 D 3.90 D2 2.82 E 3. 0.40 DFN8 (4x4) MECHANICAL DATA mm. TYP MAX. 0.90 1.00 0.02 0.05 0.20 0.30 0.38 4.00 4.10 3.00 3.23 4.00 4.10 2.20 2.30 0.80 0.50 0.60 Package mechanical data inch MIN. TYP. 0.031 0.035 0 0.001 0.008 0.009 0.012 0.154 0.157 0.111 0.118 0.154 0.157 0.081 0.087 0.031 0.016 0.020 7869653B MAX. 0.039 0.002 ...

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... Tape & Reel DPAK-PPAK MECHANICAL DATA DIM. MIN 12 6.80 Bo 10.40 Ko 2.55 Po 3.9 P 7.9 16/19 mm. TYP MAX. 330 13.0 13.2 0.504 0.795 2.362 22.4 6.90 7.00 0.268 10.50 10.60 0.409 2.65 2.75 0.100 4.0 4.1 0.153 8.0 8.1 0.311 inch MIN. TYP. MAX. 12.992 0.512 0.519 0.882 0.272 0.2.76 0.413 0.417 0.104 0.105 0.157 0.161 0.315 0.319 LD39150 ...

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... LD39150 Tape & Reel QFNxx/DFNxx (4x4) MECHANICAL DATA DIM. MIN 12 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 101 3.898 14.4 4.35 4.35 1 Package mechanical data inch TYP. MAX. 12.992 0.519 3.976 0.567 0.171 0.171 0.043 0.157 0.315 17/19 ...

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... Revision history 9 Revision history Table 5. Revision history Date Revision 26-Jan-2007 1 18/19 Initial release. Changes LD39150 ...

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... LD39150 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. ...