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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 

46920 

3080 

5

4

1

2

3

V

CC

A

IN

B

IN

GND

OUT

SL01618

Figure 1.  Simplified system diagram.

Summary of Contents for SA58605

Page 1: ... SA58605 Dual operational amplifier and 2 5 V shunt regulator Product data Supersedes data of 2002 Mar 25 2003 Nov 12 INTEGRATED CIRCUITS ...

Page 2: ...605 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 a...

Page 3: ...nate the product The fourth letter represented by x is a date tracking code Part Number Marking SA58605D AJAx PIN CONFIGURATION SL01613 1 2 3 4 5 VCC AIN BIN GND OUT SA58605 Figure 2 Pin configuration PIN DESCRIPTION PIN SYMBOL DESCRIPTION 1 OUT Output 2 GND Ground 3 BIN Amp B inverting input Non inverting input internally set at 154 mV reference voltage 4 AIN Amp A inverting input Non inverting i...

Page 4: ... 2 50 2 55 V Ii bias A Input bias current A BIN 0 V RL 4 3 kΩ 30 150 nA PSSR A PSSR A BIN 0 V RL 4 3 kΩ 62 dB Io sink A Output sink current A AIN 2 7 V BIN 0 V VOUT 1 5 V 5 mA B amplifier Vo B Output inverting voltage B AIN 0 V RL 4 3 kΩ 151 154 157 mV Ii bias B Input bias current B AIN 0 V RL 4 3 kΩ 30 150 nA PSSR B PSSR B AIN 0 V RL 4 3 kΩ 65 dB Io sink B Output sink current B AIN 0 V BIN 0 17 V...

Page 5: ...OFF OFF OFF ON ON OFF ON OFF 4 3 k measure TPA voltage Io sink A Output sink current A OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF ON 2 7 measure output sink current PSSR A PSSR A OFF ON OFF ON OFF OFF ON ON OFF OFF ON OFF 4 3 k Vo A Note 1 Vo B Output inverting voltage B ON OFF OFF OFF BIN OFF OFF OFF ON ON ON OFF 4 3 k measure TPB voltage Ii bias B Input bias current B OFF OFF OFF OFF OFF OFF OFF ...

Page 6: ...hus the PW modulation is increased and B is able to satisfy the load requirements of the battery and circuitry As B is increased above 5 V it causes the input to Amp A to increase above 2 5 V Then the output goes LOW and the LED is activated which turns on the detection diode This increases the drive on Q1 and pulls down the base of Q2 reducing it base drive With Q2 conducting less the PW modulati...

Page 7: ...uct data SA58605 Dual operational amplifier and 2 5 V shunt regulator 2003 Nov 12 7 PACKING METHOD SL01305 TAPE DETAIL COVER TAPE CARRIER TAPE REEL ASSEMBLY TAPE GUARD BAND BARCODE LABEL BOX Figure 8 Tape and reel packing method ...

Page 8: ...Philips Semiconductors Product data SA58605 Dual operational amplifier and 2 5 V shunt regulator 2003 Nov 12 8 Plastic small outline package 5 leads body width 1 6 mm SOP003 ...

Page 9: ...r contained herein in order to improve design and or performance When the product is in full production status Production relevant changes will be communicated viaaCustomerProduct ProcessChangeNotification CPCN PhilipsSemiconductorsassumesnoresponsibilityorliabilityfortheuseofanyoftheseproducts conveys no license or title under any patent copyright or mask work right to these products and makes no...

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