Philips SA58605 User Manual
INTEGRATED CIRCUITS
SA58605
Dual operational amplifier
and 2.5 V shunt regulator
Product data
Supersedes data of 2002 Mar 25
2003 Nov 12
Philips Semiconductors Product data
SA58605Dual operational amplifier and 2.5 V shunt regulator
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).
FEA TURES
•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
SIMPLIFIED DEVICE DIAGRAM
V
CC
54
4000 Ω
46920 Ω
3080 Ω
123
AMP A
AMP B
GNDOUT
A
IN
B
IN
SL01618
APPLICATIONS
•AC adapter and battery charger
•Switched Mode Power Supply (SMPS)
•Control voltage/sensor
2003 Nov 12
Figure 1. Simplified system diagram.
2
Philips Semiconductors Product data
TYPE NUMBER
SA58605Dual operational amplifier and 2.5 V shunt regulator
ORDERING INFORMATION
PACKAGE
NAME DESCRIPTION VERSION
SA58605D
SOT23-5,
SOT25, SO5
Plastic small outline package; 5 leads; body width 1.6 mm SOP003 –40 to +85 °C
Part number marking
The package is marked with a four letter code. The first three letters
designate the product. The fourth letter, represented by ‘x’, is a date
tracking code.
TEMPERATURE
RANGE
Part Number
Marking
SA58605D AJAx
PIN CONFIGURATION
1
OUT
2
GND
B
IN
SA58605
34
Figure 2. Pin configuration.
5V
SL01613
PIN DESCRIPTION
PIN SYMBOL DESCRIPTION
1 OUT Output.
2 GND Ground.
3 B
4 A
5 V
IN
IN
CC
Amp B inverting input. Non-inverting input
internally set at 154 mV reference voltage.
Amp A inverting input. Non-inverting input
internally set at 2.5 V reference voltage.
Positive supply.
INTERNAL EQUIVALENT CIRCUIT
V
CC
CC
A
IN
54
4000 Ω
46920 Ω
3080 Ω
123
AMP A
AMP B
GNDOUT
Figure 3. Internal equivalent circuit.
A
IN
B
IN
SL01618
2003 Nov 12
3
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