Analog Devices ADP3607 Datasheet

50 mA Switched Capacitor

a

Voltage Boost with Regulated Output

FEATURES
Fully Regulated Output Voltage (5 V and Adjustable)
Input Voltage Range From 3 V to 5 V
50 mA Output Current
Output Accuracy: ⴞ5%
High Switching Frequency: 250 kHz
SO-8 and TSSOP-8 Packages
–40ⴗC to +85ⴗC Ambient Temperature Range

APPLICATIONS
Computer Peripherals and Add-On Cards
Portable Instruments
Battery Powered Devices
Pagers and Radio Control Receivers
Disk Drives
Mobile Phones

GENERAL DESCRIPTION

The ADP3607 is a 50 mA regulated output switched capacitor
voltage doubler. It provides a regulated output voltage with
minimum voltage loss and requires a minimum number of ex­ternal components. In addition, the ADP3607 does not require
the use of an inductor.

The internal oscillator of the ADP3607 runs at 500 kHz nomi­nal frequency, which produces an output switching frequency of
250 kHz. This allows for the use of smaller charge pump and
filter capacitors.

The ADP3607 provides an accuracy of ±5% with a typical shut­down current of 150 µA. It can also operate from a single posi-

tive input voltage as low as 3 V. The ADP3607 is offered with
the regulation fixed at 5 V, or adjustable via external resistors
over a 3 V to 9 V range.

ADP3607

FUNCTIONAL BLOCK DIAGRAM

C

D1

GND

–

P

S3

S4

V

OUT

FB

GND

V

OUT

V

SENSE

+

*C

4.7mF

V

SENSE

V

OUT

5.0V

O

C

+

P

V

IN

SD

3.3V

S1

S2

OSC

CLOCK

GEN

1.5 V
V

REF

SD103

V

IN

+

*C

IN

4.7mF
*C

4.7mF

OFF

*FOR BEST PERFORMANCE, 10mF IS RECOMMENDED
C

P

C

IN

SD

ON

0

: SPRAGUE, 293D475X0010B2W
, CO: TOKIN, 1E475ZY5UC205F

P

+

V

IN

CP+

ADP3607-5

C

–

P

Figure 1. Typical Application Circuit

REV. 0

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1, 2, 3

WARNING!

ESD SENSITIVE DEVICE

ADP3607–SPECIFICATIONS

Parameter Symbol Condition Min Typ Max Units

OPERATING SUPPLY RANGE V

SUPPLY CURRENT I

Shutdown Mode VSD = V

OUTPUT VOLTAGE

4

LOAD REGULATION ∆V

OUTPUT RESISTANCE (Open Loop) R

OUTPUT RIPPLE VOLTAGE V

SWITCHING FREQUENCY f

SHUTDOWN

Logic Input High V
Input Current I
Logic Input Low V
Input Current I

NOTES

1

Capacitors CIN, CO and C

2

See Figure 1 conditions.

3

All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods.

4

For the adjustable version, a 1% resistor should be used to maintain output voltage tolerance. For both device types, tolerances can be improved by >1% using larger
value and lower ESR capacitors for CO and CP.

Specifications subject to change without notice.

in the test circuit are 4.7 µF with 0.1 Ω ESR. Capacitors with higher ESR may reduce output voltage and efficiency.

P

S

S

V

O

V

O

O

RIPPLE

S

IH

IH

IL

IL

O/IO

(VIN = 3.3 V @ TA = +25ⴗC, CP = CO = 4.7 ␮F unless otherwise noted.)

3.0 3.3 5 V

–40°C < TA < +85°C 3.5 6 mA

, –40°C < TA < +85°C 150 200 µA

IN

IO = 25 mA 4.85 5 5.15 V
IO = 10 mA to 50 mA 4.75 5 5.25 V

–40°C ≤ T

≤ +85°C

A

3.0 V ≤ VS ≤ 3.6 V

IO = 10 mA–25 mA 0.3 mV/mA
IO = 10 mA–50 mA 0.25 mV/mA

11 Ω

C

= C

= 4.7 µF

IN

O

= 25 mA 16 mV

I

LOAD

I

= 50 mA 31 mV

LOAD

VIN = 3.3 V

–40°C < TA < +85°C 212 250 288 kHz

2.4 V

1 µA

0.4 V

1 µA

ABSOLUTE MAXIMUM RATINGS

(T

= +25°C unless otherwise noted)

A

Input Voltage (VIN to GND) . . . . . . . . . . . . . . . . . . . . +7.5 V

Output Voltage (V

Output Short Circuit Protection . . . . . . . . . . . . . . . . . . . 1 sec

θ

, SO-8 Package

JA

, TSSOP-8 Package

θ

JA

to GND) . . . . . . . . . . . . . . . . . . +12 V

OUT

2

. . . . . . . . . . . . . . . . . . . . . . . . . 150°C/W

2

. . . . . . . . . . . . . . . . . . . . . . 208°C/W

Operating Temperature Range . . . . . . . . . . . –40°C to +85°C

Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering 10 sec) . . . . . . . .+300°C

1

ORDERING GUIDE

Model Output Voltage Package Option*

ADP3607AR-5 5 V, 50 mA SO-8
ADP3607AR Adjustable, 50 mA SO-8
ADP3607ARU-5 5 V, 50 mA RU-8
ADP3607ARU Adjustable, 50 mA RU-8

*SO = Small Outline Package; RU = Thin Small Outline Package.

Contact the factory for the availability of other output voltage options.

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . .+215°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . .+220°C

NOTES

1

This is a stress rating only, operation beyond these limits can cause the device to be

permanently damaged.

2

θ

is specified for worst case conditions with device soldered on a circuit board.

JA

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADP3607 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

–2–

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ADP3607

Table I. Other Members of ADP360x Family

1

Output Package

Model Current Option2Comments

ADP3603AR 50 mA SO-8 Nom. –3 V ± 3% Inverter
ADP3604AR 120 mA SO-8 Nom. –3 V ± 3% Inverter
ADP3605AR-3 120 mA SO-8 Nom. –3 V ± 5% Inverter

ADP3605AR 120 mA SO-8 Adj. Output Inverter

NOTES

1

See individual data sheets for detailed ordering information.

2

SO = Small Outline package.

Table II. Alternative Capacitor Technologies

High

T

ype Life Freq Temp Size Cost

Aluminum
Electrolytic
Capacitor Fair Fair Fair Small Low

Multilayer
Ceramic
Capacitor Long Good Poor Fair High

Solid
Tantalum
Capacitor Above Avg Avg Avg Avg Avg

OS-CON
Capacitor Above Avg Good Good Good Avg

PIN FUNCTION DESCRIPTIONS

Pin Mnemonic Function

1C
2V

+ Positive Terminal for the Pump Capacitor.

P

IN

Input Voltage. Connect a low ESR bypass
capacitor between this pin and device
ground to minimize supply transients.

3C

– Negative Terminal for the Pump Capacitor.

P

4 SD Logic Level Shutdown. Apply a logic Hi or

connect to V

to shut down the device. In

IN

Shutdown mode, the charge pump is turned
off and quiescent current is reduced. Apply
a logic low or connect to ground for normal
operation.

5V

SENSE

Output Voltage Sense Line. This is used to
improve load regulation by eliminating IR
drops on the high current carrying output
traces. For normal operation, connect
V

SENSE

to V

. See Application Informa-

OUT

tion section for more detail.
6 NC No Connection.
7 GND Ground.
8V

OUT

Regulated Output Voltage. Connect a low

ESR, 4.7 µF or larger capacitor between

this pin and device GND.

PIN CONFIGURATION

Table III. Recommended Capacitor Manufacturers

Manufacturer Capacitor Capacitor Type

Sprague 672D, 673D,

674D, 678D Aluminum Electrolytic

Sprague 675D, 173D,

199D Tantalum
Nichicon PF and PL Aluminum Electrolytic
Mallory TDC and TDL Tantalum
TOKIN MLCC Multilayer Ceramic
MuRata GRM Multilayer Ceramic

1

+

C

P

2

ADP3607

V

IN

TOP VIEW

3

CP–

(Not to Scale)

4

SD

NC = NO CONNECT

8

V

OUT

7

GND

6

NC

5

V

SENSE

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–3–