ADP3330ARTZ-2.75RL View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADP3330ARTZ-2.75RL

High Accuracy, Ultralow IQ, 200 mA, SOT-23, anyCAP Low Dropout Regulator

Analog Devices 

Data Sheet

APPLICATION CIRCUITS

CROSSOVER SWITCH

The circuit in Figure 27 shows how two ADP3330s can be used

to form a mixed supply voltage system. The output switches

between two different levels selected by an external digital

input. Output voltages can be any combination of voltages that

are included in the Ordering Guide.

VIN = 3.85V TO 12V

IN

OUT

VOUT = 3.6V/2.5V

OUTPUT SELECT

3V

0V

ADP3330-3.6

SD

GND

C1 +

IN

OUT

1.0µF

ADP3330-2.5

LOGIC SUPPLY

SD GND

+ C2

0.47µF

Figure 27. Crossover Switch

ADP3330

HIGHER OUTPUT CURRENT

The ADP3330 can source up to 200 mA at room temperature

without any heat-sink, or pass transistor. If higher current is

needed, an appropriate pass transistor can be used, as in

Figure 28, to increase the output current to 1 A.

VIN = 4.5V TO 8V

C1

100µF

MJE253*

R1

50Ω

VOUT = 3V AT 1A

IN

OUT

ADP3330-3

+ C2

100µF

SD

ERR

GND

*AAVID531002 HEAT-SINK IS USED

Figure 28. High Output Current Linear Regulator

Rev. C | Page 13 of 16

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