L4995| Datasheet

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L4995
5V, 500mA low drop voltage regulator
Features
Max DC supply voltage Max output voltage tolerance Max dropout voltage Output current Quiescent current
1. Typical value with regulator disabled

VS V0 Vdp I0 Iqn

40V +/-2% 500mV 500mA 3uA(1)

PowerSSO-12

PowerSSO-24

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

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 over-temperature 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.

Description
L4995 is a family of monolithic integrated 5V voltage regulators with a low drop voltage at currents of up to 500mA, available in both 12 and 24 pin packages.

The combination of such features makes this device particularly flexible and suitable to supply microprocessor systems in automotive applications.

Table 1.

Device summary
Package Order codes Tube L4995J - L4995AJ - L4995RJ L4995K - L4995AK - L4995RK Watchdog X Reset X X X Tape & 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

a. Watchdog and Enable facilities are available according to Table 1: Device summary

December 2007

Rev 6

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