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L4995 Dataheets PDF



Part Number L4995
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description 500mA low drop voltage regulator
Datasheet L4995 DatasheetL4995 Datasheet (PDF)

L4995 5V, 500mA low drop voltage regulator Datasheet − production data Features Max DC supply voltage Max output voltage tolerance Max dropout voltage Output current Quiescent current 1. Typical value with regulator disabled ■ ■ ■ ■ ■ ■ ■ ■ ■ VS ΔV0 Vdp I0 Iqn 40V +/-2% 500mV 500mA 3µA(1) Pow erSSO-12 P owerSSO-24 Description L4995 is a family of monolithic integrated 5 V voltage regulators with a low drop voltage at currents of up to 500 mA, available in both 12 and 24 pin packages. The o.

  L4995   L4995


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L4995 5V, 500mA low drop voltage regulator Datasheet − production data Features Max DC supply voltage Max output voltage tolerance Max dropout voltage Output current Quiescent current 1. Typical value with regulator disabled ■ ■ ■ ■ ■ ■ ■ ■ ■ VS ΔV0 Vdp I0 Iqn 40V +/-2% 500mV 500mA 3µA(1) Pow erSSO-12 P owerSSO-24 Description L4995 is a family of monolithic integrated 5 V voltage regulators with a low drop voltage at currents of up to 500 mA, available in both 12 and 24 pin packages. The output voltage regulating element consists of a p-channel MOS and regulation is performed regardless of input voltage transients of up to 40V. The high precision of the output voltage is obtained using a pre-trimmed reference voltage. The L4995 family is protected against short circuit and overtemperature protection switches off the devices in the case of extremely high power dissipation. The L4995 integrates the watchdog, enable and externally programmable reset circuits. The L4995A features the externally programmable reset and enable. Finally the L4995R features the externally programmable reset. The combination of such features makes this device particularly flexible and suitable to supply microprocessor systems in automotive applications. Operating DC supply voltage range 5.6V to 31V Low dropout voltage Low quiescent current consumption Reset circuit sensing of output voltage down to 1V Programmable reset pulse delay with external capacitor Programmable watchdog(a) timer with external capacitor Thermal shutdown and short circuit protection Wide temperature range (Tj = -40 °C to 150 °C) Enable(a) input for enabling/disabling the voltage regulator a. Watchdog and Enable facilities are available according to Device summary table. Table 1. Device summary Package Order codes Tube L4995J - L4995AJ - L4995RJ L4995K - L4995AK - L4995RK Watchdog X Reset X X X Tape and reel L4995JTR - L4995AJTR - L4995RJTR L4995KTR - L4995AKTR - L4995RKTR Enable X X - PowerSSO-12 (exposed pad) PowerSSO-24 (exposed pad) P/N L4995J - L4995K L4995AJ - L4995AK L4995RJ - L4995RK October 2012 This is information on a product in full production. Doc ID 13103 Rev 13 1/35 www.st.com 1 Free Datasheet http://www.datasheet4u.com/ Contents L4995 Contents 1 2 Block diagrams and pins descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 2.2 2.3 2.4 2.5 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Test circuit and waveforms plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.5.1 Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.1 3.2 3.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4 Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.1 4.2 PowerSSO-12 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 PowerSSO-24 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.1 5.2 5.3 5.4 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 PowerSSO-24 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 PowerSSO-12 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 PowerSSO-24 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 2/35 Doc ID 13103 Rev 13 Free Datasheet http://www.datasheet4u.com/ L4995 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pins descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Absolute maximum ratings . . . . ..


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