STMicroelectronics L4904A
The L4904A is a monolithic low drop dual 5V regulator designed mainly for supplying microprocessor systems.| Part No. | L4904A |
|---|---|
| Datasheet | L4904A 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 1/9 L4904A PIN FUNCTIONS N° 1 2 3 4 5 6 Name Input 1 Input 2 Timing Capacitor GND N.C. Reset Output Output 2 Output 1 Function Low Quiescent Current 50mA Regulator Input. 100mA Regulator Input. If Reg. 2 is switching-ON the delay capacitor is charged with a 10µA constant current. When Reg. 2 is switched-OFF the delay capacitor is discharged. Common Ground. Not connected. When pin 3 reaches 5V the reset output is switched high. 5V Therefore tRD = Ct ( ); tRD (ms) = Ct (nF). 10µA 5V – 100mA Regulator Output. Enabled if Vo 1 > VRT and VIN 2 > VIT. If Reg. 2 is switched-OFF the Co2 capacitor is discharged. 5V – 50mA regulator output with low leakage in switch-OFF condition. 7 8 BLOCK DIAGRAM SCHEMATIC DIAGRAM 2/9 L4904AABSOLUTE MAXIMUM RATINGS
Symbol V IN Io Ptot Tj Parameter DC Input Voltage Transient Input Overvoltage (t = 40ms) Output Current Power Dissipation at Tamb = 50°C Storage...
