CS8120 CHERRY [Cherry Semiconductor Corporation], CS8120 Datasheet
CS8120
Available stocks
Related parts for CS8120
CS8120 Summary of contents
Page 1
... Linear Regulator with RESET Description The CS8120 is a 5V, 300mA precision linear regulator with two microproces- sor compatible control functions and protection circuitry included on chip. The composite NPN-PNP output pass transistor assures a lower dropout volt- age (1V @ 200mA) without requiring excessive supply current (2.5mA). ...
Page 2
DC Input Voltage ...........................................................................................................................................................-0.7 to 26V Load Dump .................................................................................................................................................................................60V Output Current .................................................................................................................................................Internally Limited Electrostatic Discharge (Human Body Model) ......................................................................................................................2kV Operating Temperature .......................................................................................................................................-40¡C to +125¡C Junction Temperature...........................................................................................................................................-40¡C to +150¡C Storage Temperature ............................................................................................................................................-55¡C to +150¡C Lead Temperature Soldering Wave Solder (through hole ...
Page 3
PACKAGE LEAD # 5 Lead 8 Lead 14 Lead SO 5 Lead D TO-220 PDIP Narrow PAK N 2,3,4, 6,7,8,9,11 Output ...
Page 4
... Output Stage OUT Figure 1: Composite Output Stage of the CS8120 Typical Performance Characteristics: continued Output Voltage and Supply Current vs. Input Voltage 250 300 350 RESET Output Voltage vs. Output Current V ...
Page 5
... WITH RESET DELAY CAPACITOR Figure 3: Circuit Waveforms for CS8120 The circuit depicted in Figure 5 lets the microprocessor control its power source, the CS8120 regulator. An I/O port on the µP and the SWITCH port are used to drive the base of Q1. When Q1 is driven into saturation, the voltage ...
Page 6
... V BAT SWITCH Figure 5: Microprocessor Control of CS8120 using an external switching transistor (Q The I/O port of the microprocessor typically provides 50µA to Q1. In automotive applications the SWITCH is connected to the ignition switch. Stability Considerations The output or compensation capacitor, C mine three main characteristics of a linear regulator: start- up delay, load transient response and loop stability. ...
Page 7
0.1mF *C is required if regulator is far from power source filter. 1 **C is required for stability. 2 Figure 6. Circuit showing output compensation capacitor. Calculating Power Dissipation in a Single Output Linear Regulator ...
Page 8
... Description CS8120YT5 5 Lead TO-220 Straight CS8120YTVA5 5 Lead TO-220 Vertical CS8120YTHA5 5 Lead TO-220 Horizontal CS8120YN8 8 Lead PDIP CS8120YDP5 5 Lead D CS8120YDPR5 5 Lead D (tape & reel) CS8120YD14 14 Lead SOIC Narrow CS8120YDR14 14 Lead SOIC Narrow (tape & reel) Rev. 2/3/98 Package Specification D Thermal Data 5 Lead 5 Lead 8 Lead 14 Lead SOIC ...