Philips SA58605 manual Description, Features, Simplified Device Diagram, Applications

Philips Semiconductors	Product data
Dual operational amplifier and 2.5 V shunt regulator	SA58605

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 ªAº is referenced to 2.5 V while Amp ªBº is referenced to

154 mV. The SA58605 incorporates a ªNOR logicº 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 ªAº at 2.5 V typ.

±Amp ªBº at 154 mV

SIMPLIFIED DEVICE DIAGRAM

VCC			AIN
5			4
	4000	Ω
		AMP A
	46920	Ω
		AMP B
	3080	Ω
1		2	3
OUT		GND	BIN
			SL01618

Figure 1. Simplified system diagram.

APPLICATIONS

•AC adapter and battery charger

•Switched Mode Power Supply (SMPS)

•Control voltage/sensor

2003 Nov 12 2