Philips SA58605 - Manual (Page 2)

Philips Semiconductors Product data
SA58605 Dual operational amplifier and 2.5 V shunt regulator
2 2003 Nov 12
DESCRIPTION
The SA58605 incorporates two op amps and 2.5 V shunt regulator
in an unique circuit configuration. The output of the device is
inverted when the inverting inputs of either or both op amps exceed
the internally set reference voltages at their non-inverting inputs.
Amp “A” is referenced to 2.5 V while Amp “B” is referenced to
154 mV. The SA58605 incorporates a “NOR logic” configuration with
these specific gate levels.
SA58605 supports voltage control and sensor applications such as
AC adapter, switch mode power supply and battery chargers. It is
available in a 5-lead small outline surface mount package
(SOP003).
FEATURES
•
Low input bias current: 30 nA typ.
•
Low operating supply current: 1.2 mA typ.
•
Reference voltages at non-inverting inputs:
– Amp “A” at 2.5 V typ.
– Amp “B” at 154 mV
APPLICATIONS
•
AC adapter and battery charger
•
Switched Mode Power Supply (SMPS)
•
Control voltage/sensor
SIMPLIFIED DEVICE DIAGRAM
AMP A
AMP B
4000 Ω
46920 Ω
3080 Ω
5 4
1 2 3
V CC A IN
B IN GND OUT
SL01618
Figure 1. Simplified system diagram.