The L4987 is a very low drop regulator available in PPAK. The very low drop-voltage (0.5V Max at 200 mA) and the very low quiescent current make it particularly suitable for low noise, low power applications, and in battey powered systems. The input dump protection up to 40V makes it ideal for automotive applications. a shutdown Logic Control function is ava.
he boad in standby, decreasing the total power consumption. The regulator employs an output pin (open collector) providing a logic signal when the pass transistor is in saturation at low input voltage, this signal can be used to prevent the pop-up phenomenon in the car radio. In battery powered systems (the cellular phone, notebook) it is possible to use the flag to monitor the battery charge status through the dropout of the regulator. October 1998 1/11 L4987 SERIES ABSOLUTE MAXIMUM RATINGS Symbol Vi Io P tot T st g T op DC Input Voltage Output Current Power Dissipation Storage Temperature.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | L4981A |
STMicroelectronics |
POWER FACTOR CORRECTOR | |
2 | L4981B |
STMicroelectronics |
POWER FACTOR CORRECTOR | |
3 | L4984 |
STMicroelectronics |
CCM PFC controller | |
4 | L4984D |
STMicroelectronics |
CCM PFC controller | |
5 | L4985 |
STMicroelectronics |
CCM PFC controller | |
6 | L4986 |
STMicroelectronics |
CCM PFC controller | |
7 | L4987CPT33TR |
STMicroelectronics |
Very low drop voltage regulators | |
8 | L4987CPT50TR |
STMicroelectronics |
Very low drop voltage regulators | |
9 | L4988 |
STMicroelectronics |
Automotive low drop voltage regulator | |
10 | L4989 |
STMicroelectronics |
LOW POWER VOLTAGE REGULATOR | |
11 | L4989D |
STMicroelectronics |
Low power voltage regulator | |
12 | L4989MD |
STMicroelectronics |
Low power voltage regulator |