JBL ES250PW Service Manual

1/18November 2004
STM809, STM810
STM811, STM812
Reset Circuit
FEATURES SUMMARY
■ PRECISION MONITORING OF 3V, 3.3V, and
5V SUPPLY VOLTAGES
■ TWO OUTPUT CONFIGURATIONS
– Push-pull RST
Output (STM809/811)
– Push-pull RST Output (STM810/812)
■ 140ms RESET PULSE WIDTH (MIN)
■ LOW SUPPLY CURRENT - 6µA (TYP)
■ GUARANTEED RST/RST ASSERTION
DOWN TO V
CC
= 1.0V
■ OPERATING TEMPERATURE:
–40°C to 85°C (Industrial Grade)
■ LEAD-FREE, SMALL SOT23 and SOT143
PACKAGE
Table 1. Device Options
Figure 1. Packages
Active-
Low
RESET
Active-
High
RESET
Manual
RESET
Input
Package
STM809 ✔ SOT23-3
STM810 ✔ SOT23-3
STM811 ✔✔SOT143-4
STM812 ✔✔SOT143-4
SOT23-3 (WX)
SOT143-4 (W1)
ES250PW
37

JBL ES250PW Specifications

General

Amplifier Power RMS	400 Watts
Amplifier Power Peak	700 Watts
Frequency Response	25Hz - 150Hz
Driver	12" (300mm) PolyPlas
Inputs	LFE, Line-Level
Crossover Frequency	50Hz - 150Hz
Enclosure Type	Bass-Reflex