STMicroelectronics L4901A
The L4901A is a monolithic low drop dual 5V regulator designed mainly for supplying microprocessor systems.| Part No. | L4901A |
|---|---|
| Datasheet | L4901A Download |
| Manufacturer |  STMicroelectronics |
| Description | DUAL 5V REGULATOR WITH RESET |
| Buy | Stock & Price |
DESCRIPTION
Reset and data save functions during switch on/off can be realized. PIN CONNECTION June 2000 1/10 L4901A PINDESCRIPTION
N° 1 2 3 4 5 Name Input 1 Input 2 Timing Capacitor GND Reset Output Output 2 Output 1 Function Low Quiescent Current 400mA Regulator Input. 400mA regulator input. If Reg. 2 is switched-ON the delay capacitor is charged with a 10µA constant current. When Reg. 2 is switched-OFF the delay capacitor is decharged. Common Ground. When pin 3 reaches 5V the reset output is switched high. 5V Therefore tRD = Ct ( ); tRD (ms) = Ct (nF) 10µA 5V – 400mA Regulator Output. Enabled if Vo 1 > VRT and VIN 2 > VIT. If Reg. 2 is switched-OFF the C02 capacitor is discharged. 5V – 400mA regulator output with Low leakage (in switch-OFF condition). 6 7 BLOCK DIAGRAM SCHEMATIC DIAGRAM 2/10 L4901AABSOLUTE MAXIMUM RATINGS
Symbol V IN Io Tj Parameter DC Input Voltage Transient Input Overvoltage (t = 40ms) Output Current Storage and Junction Temperature Value 24 60 Internally Limited – 40 to 150 °C Unit V V THERMAL DATA Symbol R th (j-c) Parameter Thermal Resistance Junction-case Max.
