L4988D Datasheet, PDF (1/32 Pages) STMicroelectronics – Low drop voltage regulator

L4988
Low drop voltage regulator
Features
Datasheet  production data
Max DC supply voltage
V_S
Max output voltage tolerance
V₀
Max dropout voltage
V_dp
Output current
I₀
Quiescent current
I_qn
1. Typical value with watchdog disabled.
40V
+/-2%
500 mV
200 mA
75 µA⁽¹⁾
■ Operating DC supply voltage range 5.6V to
31V
■ Reset circuit sensing the output voltage down
to 1V
■ Programmable reset pulse delay with external
capacitor
■ Watchdog
■ Programmable watchdog timer with external
capacitor
■ Enable input for enabling/disabling the
watchdog functionality
■ Thermal shutdown and short circuit protection
■ Wide temperature range (T_j = -40°C to 150°C)
'!0'#&4
SO-8
'!0'#&4
SO-20
Description
The L4988 is a monolithic integrated 5V voltage
regulator with a low drop voltage at currents up to
200mA. The output voltage regulating element
consists in a p-channel MOS and the regulation is
performed regardless of input voltage transients
up to 40V. The high precision of the output voltage
is obtained with a pre-trimmed reference voltage.
The L4988 is protected against short circuit and
an over-temperature protection switches off the
device in case of extremely high power dissipa-
tion. The L4988 is active when the Enable is high.
State of the art features like reset and watchdog
make this device particularly suitable to supply
microprocessor systems in automotive
applications.
Table 1. Device summary
Package
SO8
SO20 (16+2+2)
Tube
L4988D
L4988MD
Order codes
Tape & reel
L4988DTR
L4988MDTR
September 2013
This is information on a product in full production.
Doc ID 13617 Rev 6
1/32
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