l4987 STMicroelectronics, l4987 Datasheet
l4987
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l4987 Summary of contents
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... Available in ± 2% selection at 25°C ■ Supply voltage rejection (typ.) Description The L4987 is a very low drop regulator available in PPAK. The very low drop-voltage (0.5 V Max at 200 mA) and the very low quiescent current make it particularly suitable for low noise, low power applications, and in battery powered systems ...
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... Contents 1 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Application hint of L4987CPT33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.1 How to use the control flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 ...
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Schematic diagram Figure 1. Schematic diagram 3/16 ...
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Pin configuration Figure 2. Pin connections (top view) 4/16 ...
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Maximum ratings Table 2. Absolute maximum ratings Symbol V DC Input voltage I I Output current O P Power dissipation tot T Storage temperature range stg T Operating junction temperature range op Note: Absolute Maximum Ratings are those values ...
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... Electrical characteristics Table 4. Electrical characteristics of L4987Cxx33 (refer to the test circuits 25° 0.1 µ Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit out ΔV Line regulation O ΔV Load regulation O Quiescent current ON MODE I d OFF MODE SVR Supply voltage rejection ...
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... Table 5. Electrical characteristics of L4987Cxx50 (refer to the test circuits 25° 0.1 µ Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit out ΔV Line regulation O ΔV Load regulation O Quiescent current ON MODE I d OFF MODE SVR Supply voltage rejection ...
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Typical characteristics (Unless otherwise specified T Figure 3. Output and flag voltage vs input voltage Figure 5. Output and flag voltage vs input voltage Figure 7. Output and flag voltage vs inp. volt. Figure 8. 8/16 = 25°C, C ...
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... Regarding the maximum value of R (CMOS, TTL etc.), the transistor leakage current and the presence or not of a load FLAG The following example shows how to determine the R no load and 10 µA (for L4987 it is the maximum value of I Because of CMOS logic: ≥ 2 FLAG(HIGH) but: ...
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Figure 9. Output and flag voltage vs input 10/16 Figure 10. Flag voltage vs input ...
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Test circuits Figure 11. Test circuit Figure 12. Single antenna receiver with master receiver port Figure 13. Equivalent output circuit Figure 14. Output and flag voltage vs input 11/16 ...
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Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner ...
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PPAK mechanical data mm. Dim. Min. Typ. A 2.2 A1 0.9 A2 0.03 B 0.4 B2 5.2 C 0. 5.1 E 6.4 E1 4.7 e 1.27 G 4.9 G1 2.38 H 9.35 L2 0.8 L4 ...
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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 14/16 mm. Typ. Max. Min. 330 13.0 13.2 0.504 0.795 2.362 22.4 6.90 7.00 ...
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Revision history Table 6. Document revision history Date Revision 22-Jun-2004 4 04-Sep-2006 5 26-Sep-2007 6 Changes V min and V max values in Table 5, pag. 4 have been corrected The I value on table 7 has ...
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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. ...