120 mA Switched Capacitor
Voltage Inverter with Regulated Output
Data Sheet
ADP3605
Rev. B Document Feedback
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FEATURES
Fully regulated adjustable output voltage
High output current: 120 mA
Output accuracy: ±3%
250 kHz switching frequency
Low shutdown current: 2 µA typical
Input voltage range: 3 V to 6 V
8-Lead SOIC package
40°C to +85°C ambient temperature range
APPLICATIONS
Voltage inverters
Voltage regulators
Computer peripherals and add-on cards
Portable instruments
Battery powered devices
Pagers and radio control receivers
Disk drives
Mobile phones
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
GENERAL DESCRIPTION
The ADP3605 is a 120 mA regulated output, switched capacitor
voltage inverter. It provides a regulated output voltage with
minimum voltage loss and requires a minimum number of
external components. In addition, the ADP3605 does not
require the use of an inductor.
Pin-for-pin and functionally compatible with the ADP3604, the
internal oscillator of the ADP3605 runs at a 500 kHz nominal
frequency that produces an output switching frequency of
250 kHz. This allows for the use of smaller charge pump and
filter capacitors.
The ADP3605 provides an accuracy of ±3% with a typical
shutdown current of 2 µA. It can also operate from a single
positive input voltage as low as 3 V. The ADP3605 is adjustable
via external resistors over a 3 V to 6 V range.
Figure 2. Typical Application Circuit
8
1
2
7
C
P
+
S P D
S1 S3
B
S2 S4
S N D D N S
D N S
OSC
CLOCK
GEN
V
IN
V
OUT
V
SENSE
SD
GND
ADP3605
C
P
3
4
5
FEEDBACK
CONTROL
LOOP
11135-001
8
7
1
3
4
5
2
+
+
+
–3.0V
V
IN
V
SENSE
V
IN
V
OUT
*C
IN
4.7µF
*C
O
4.7µF
*C
P
4.7µF
C
P
+
GND
ADP3605
C
P
SD
R1
19kΩ
OFF
*FOR BEST PERFORMANCE, 10µF IS RECOMMENDED
C
P
: SPRAGUE, 293D475X0010B2W
C
IN
, C
O
: TOKIN, 1E475ZY5UC205F
ON
0
11135-002
ADP3605* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
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DOCUMENTATION
Data Sheet
ADP3605: 120 mA Switched Capacitor Voltage Inverter
with Regulated Output Data Sheet
REFERENCE MATERIALS
Solutions Bulletins & Brochures
Charge Pumps Products (March 2003)
DESIGN RESOURCES
ADP3605 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
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SAMPLE AND BUY
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TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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ADP3605 Data Sheet
Rev. B | Page 2 of 12
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions ............................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ........................................................................ 8
Applications Information ................................................................ 9
Capacitor Selection .......................................................................9
Input Capacitor..............................................................................9
Output Capacitor ..........................................................................9
Pump Capacitor.......................................................................... 10
Shutdown Mode ......................................................................... 10
Power Dissipation ...................................................................... 10
General Board Layout Guidelines ............................................ 10
ADP3605 Regulated Adjustable Output Voltage ................... 10
Regulated Dual Supply System ................................................. 11
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 12
REVISION HISTORY
12/12Rev. A to Rev. B
Updated Format .................................................................. Universal
Deleted 14-Lead TSSOP .................................................... Universal
Changes to Features Section, General Description Section, and
Figure 2 .............................................................................................. 1
Changes to Table Summary Text Prior to Table 1 and Table 1 ... 3
Changes to Table 2 ............................................................................ 4
Deleted Other Members of ADP36xx Family Table I;
Renumbered Sequentially ................................................................ 4
Deleted Figure 4; Renumbered Sequentially................................. 4
Deleted Improved Load Regulation Section ................................. 6
Deleted Maximum Output Voltage Section and Figure 15 ......... 7
Changes to Figure 10 Caption......................................................... 7
Changes to Power Dissipation Section, Regulated Adjustable
Output Voltage Section, and Figure 17 ........................................ 10
Updated Outline Dimensions ................................
....................... 12
Changes to Ordering Guide .......................................................... 12
7/99Rev. 0 to Rev. A

ADP3605ARZ-R7

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 120mA Switched Capacitor VTG Invrtr
Lifecycle:
New from this manufacturer.
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