RS550

4PST Depletion Mode Isolation Switch
1 FEATURES

3 DESCRIPTIONS•4PST(NC)The RS550 is a high-performance four-pole single•Depletion Mode MOSFETs

throw(4PST) normally closed Depletion-Mode isolation•Audio Frequency Range

switch. The Depletion Mode technology allows the•Supply Range: +1.6V to +3.0V

device to conduct signals when there is no VCC available•

Low ON-State Resistance: 0.5Ω (TYP)

and to isolate the signals when VCC is present.

•RON Flat: 0.01 Ω Typical•THD+N: 0.002% Typical

The RS550 operates on a wide VCC range for design•

Extended Industrial Temperature

flexibility. Additionally, select pins allow the internal

Range: -40°C to +85°C

oscillator frequency to be adjusted between 500 kHz

Available in Green WLCSP1.6X1.2-12 andQFN3X3-16 Package

and 750 kHz in 75 kHz steps when VCC is present. This•feature is used to shift the electromagnetic interference(EMI) signature to meet customer specifications.

2 APPLICATIONS•

MP3 Portable Media Players•Cell Phones

Device Information (1)PART NUMBER
RS550(1)

PACKAGEBODY SIZE (NOM)

WLCSP1.6X1.2-12

1.60mm×1.20mm

QFN3X3-16

3.00mm×3.00mm

For all available packages, see the orderable addendum at the endof the data sheet.

4 TYPICAL APPLICATION CIRCUITRS550
L_SPKR
R_SPKR

Control IC

GND

VCC

Noise
Canceling IC

REV B.31 / 12

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RS550
Table of Contents
1 FEATURES ............................................................................................................................................................................... 1
2 APPLICATIONS ...................................................................................................................................................................... 1
3 DESCRIPTIONS ...................................................................................................................................................................... 1
4 TYPICAL APPLICATION CIRCUIT ..................................................................................................................................... 1
5 REVISION HISTORY ............................................................................................................................................................. 3
6 PACKAGE/ORDERING INFORMATION (1) ..................................................................................................................... 47 PIN CONFIGURATIONS ...................................................................................................................................................... 58 SPECIFICATIONS ................................................................................................................................................................... 7
8.1 Absolute Maximum Ratings .......................................................................................................................................... 7
8.2 ESD Ratings ...................................................................................................................................................................... 7
8.3 Recommended Operating Conditions ......................................................................................................................... 7
8.4 Electrical Characteristics ................................................................................................................................................ 89 PACKAGE OUTLINE DIMENSIONS .................................................................................................................................. 910 TAPE AND REEL INFORMATION .................................................................................................................................112 / 12

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RS550
5 REVISION HISTORY
Note: Page numbers for previous revisions may different from page numbers in the current version.
VERSION

Change Date

Change Item

A.1

2019.6.1

Initial version completed

A.2

2019.9.10

Added UQFN2.5x2.5-12 package

B.1

2020.8.1

Added QFN3x3-16 package

B.2

2020.11.12

Deleted UQFN2.5x2.5-12 package

B.2.1

2024/02/23

B.3

2024/05/28

Modify packaging naming
1. Add Device Information on Page 1@RevB.2.1
2. Add MSL on Page 6@RevB.2.1
3. Add Package thermal impedance on Page 5@RevB.2.1

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RS5506 PACKAGE/ORDERING INFORMATION (1)PRODUCTRS550

ORDERING
NUMBER
RS550YUCM12TEMPERATURE
RANGE-40°C ~+85°C

WLCSP1.6X1.2-12

PACKAGEMARKING (2)RS550

RS550YTQC16-40°C ~+85°C

QFN3X3-16

RS550

PACKAGE LEAD

MSL (3)

PACKAGE OPTIONMSL3Tape and Reel, 3000MSL3

Tape and Reel, 5000

NOTE:
(1) This information is the most current data available for the designated devices. This data is subject to change without notice and revisionof this document. For browser-based versions of this data sheet, refer to the right-hand navigation.
(2) There may be additional marking, which relates to the lot trace code information (data code and vendor code), the logo or theenvironmental category on the device.
(3) MSL, The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications.

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RS5507 PIN CONFIGURATIONS

1.6mm(TOP VIEW)
123A0

VCC

B0A

A1SEL0B1B

A2SEL1B2C

A3GND

B3D1.2mm
WLCSP1.6X1.2-12

PIN DESCRIPTIONPIN#NAME

TYPE (1)

A1A0

I/O

A-Port

B1

A1

I/O

A-PortDESCRIPTION

C1

A2

I/O

A-Port

D1

A3

I/O

A-PortA2

VCC

P

Supply Voltage (see Table 1)

B2

SEL0

I

C2

SEL1

I

Oscillator Frequency Control (see Table 2). Used to shift the electromagnetic
interference (EMI) signature to meet the customer specifications.

D2GND

GGround

A3B0I/O

B-Port

B3B1

I/O

B-PortC3B2

I/O

B-PortD3B3I/O

B-Port(1) I = Input, O = Output, P=Power, G=Ground.

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RS550PIN CONFIGURATIONS
A016

SEL0(TOP VIEW)
A1A2

A315

1413X

112SEL111NC

X7NC

2VCC

310GNDNC

49NC

Exposed Pad

5678B0B1B2B3QFN3X3-16

PIN DESCRIPTIONPIN#NAME

TYPE (1)DESCRIPTION

1SEL0I

12SEL1I

Oscillator Frequency Control (see Table 2). Used to shift the electromagnetic
interference (EMI) signature to meet the customer specifications.

2NC-

No Connect.

3VCC

P

Supply Voltage (see Table 1)

4NC-

No Connect.

5B0I/O

B-Port6B1I/O

B-Port7B2I/O

B-Port8B3I/O

B-Port9NC-

No Connect.

10

GND

GGround

11NC-

No Connect.

13

A3I/O

A-Port

14

A2

I/O

A-Port

15

A1

I/O

A-Port

16

A0

I/O

A-Port--Exposed Pad

GGround or float(1) I = Input, O = Output, P=Power, G=Ground.

Table 1. Truth Table
VCC

Function

0V~0.2V

Conduction; B0~B3=A0~A31.6V~3.0V

Disconnect; B0~B3≠A0~A3

Table 2. Oscillator Frequency Step Logic
SEL1

SEL0

Frequency (TYP)

LOW

LOW

500kHzLOW

HIGH

575kHz

HIGH

LOW

650kHzHIGH

HIGH

725kHz6 / 12

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RS5508 SPECIFICATIONS
8.1 Absolute Maximum Ratings
Over operating free-air temperature range (unless otherwise noted) (1)SYMBOLPARAMETER

MIN

MAX

VCC

Supply/Control Voltage,

05.5

VIN

Input Voltage (Select Pins SEL0, SEL1)0VCC

VSW(ON)DC Switch I/O Voltage (Switch Conducting)

VCC=0V

-5.0+5.0

VSW(OFF) (2)DC Switch I/O Voltage (Switch Isolated)

VCC=Powered-1.8+3.0

IIKDC Input Diode Current

ISW

Switch I/O Current

VCC=0VISWPEAKPeak Switch Current

Pulsed at 1ms Duration, <10% Duty Cycle

UNITV

-50
350mA

500

θJAPackage thermal impedance (3)TA

Absolute Maximum Operating Temperature-40+85Tstg

Storage-65+150

QFN3X3-16

70°C/W°C(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degradedevice reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond thosespecified is not implied.
(2) When a switch is isolated (OFF), VSW value must be < VCC.
(3) The package thermal impedance is calculated in accordance with JESD-51.

8.2 ESD Ratings
The following ESD information is provided for handling of ESD-sensitive devices in an ESD protected area only.
VALUE
V(ESD)

Electrostatic discharge

Human-Body Model (HBM)±4000

Machine Model (MM)±200

UNITVESD SENSITIVITY CAUTION
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric changes could cause the device not to meet its publishedspecifications.

8.3 Recommended Operating Conditions
Over operating free-air temperature range (unless otherwise noted) (1)SYMBOLPARAMETERMINMAXUNIT

00.2

V

VCC(ON)

Supply Voltage with Switch Conducting

VCC(OFF)

Supply Voltage with Switch Isolated

1.6

3.0VVSW(ON)DC Switch I/O Voltage (Switch Conducting)

VCC=0V-2.0+2.0VVSW(OFF)DC Switch I/O Voltage (Switch Isolated)

VCC=1.6V to 3.0V-1.6+1.6V(1) The Recommended Operating Condition table defines the conditions for actual device operation. Recommended operating condition arespecified to ensure optimal performance to the datasheet specifications.

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RS5508.4 Electrical Characteristics
Typical values at TA = 25°C unless otherwise specified.
PARAMETERDC Electrical Characteristics
Switch-to-GND Leakage Current(Switch Conducting)
Switch-to-GND Leakage Current(Switch Isolated)

SYMBOLION
IOFF

CONDITIONSAn = -1.4 V to 1.4 V,Bn = Float
An = 0.4 V to 1.4 V,
Bn = Float
ISW = ±24 mA,
VSW= -1.4V to +1.4V
ISW = ±24 mA,
VSW = -1.4V to +1.4V
SEL0 = SEL1 = VCC

MIN(1) TYP(2) MAX(1) UNITSVCC(V)

TA

0+25°C

00.3

2.0μA

3+25°C

00.5

1.0μA

0+25°C

0.5Ω

0+25°C0.01Ω

3+25°C

Switch On Resistance (3)RON

On Resistance Flatness (3)RFLAT(ON)

Quiescent Supply Current

ICC

Input Voltage High (Select Pins) (4)VIH

3+25°C 0.8*VCC

Input Voltage Low (Select Pins) (4)VIL

3+25°C

Input Leakage Current (Select Pins)

IIN

3+25°C

1.6+25°C

160

ns

1.6+25°C

90μs

1.6+25°C-80

dB

0+25°C-90dB

0+25°C<200MHZ

0+25°C

0.002

%

040

60

μA
V

00.2*VCC

V±1μA

AC Electrical Characteristics
Turn-On Time VCC to Output (5.6)

tON

Turn-Off Time VCC to Output (5,6)

tOFF

Off Isolation (5,6)

OIRR

Crosstalk (5,6)

XTALK-3dB Bandwidth (5)BW

Total Harmonic Distortion + Noise (5,6)

THD+N

RL = 32 Ω, CL = 10pF,
VSW = 1.4V
RL = 32 Ω, CL = 10pF,
VSW = 1.4V
RL = 32 Ω, f = 20 kHz,VSW = 0.35 VRMS
RL = 32 Ω, f = 20 kHz,VSW = 1 VRMS
RL = 50 Ω, CL = 0 pF
RL = 32 Ω, f = 20 Hz
to 20 kHz,VSW = 1 VRMS

(1) Limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlations using statisticalquality control (SQC) method.
(2) Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may varyover time and will also depend on the application and configuration.
(3) Guaranteed by test and characterization.
(4) Voltages on select control pins must be <VCC.
(5) SEL0=SEL1=LOW.
(6) Guaranteed by characterization.

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RS5509 PACKAGE OUTLINE DIMENSIONSWLCSP1.6X1.2-12 (4)x1

E1x2by1

Eey2

D

D1

PIN1

BOTTOM VIEW
BALL SIDE

A1A

A2TOP VIEWMARK SIDE

SIDE VIEWNOTES: ALL WAFER ORIENTATION NOTCH DOWNSYMBOL

Dimensions In Millimeters

Dimensions In Inches

MinNomMaxMinNom

Max

A (1)

0.542

0.582

0.622

0.021

0.023

0.024

A1

0.177

0.202

0.227

0.007

0.008

0.009

A2

0.355

0.380

0.405

0.014

0.015

0.016

D (1)

1.570

1.600

1.630

0.062

0.063

0.064

1.200 BSC (2)

D1
E (1)

1.170

1.230

0.046

0.800 BSC (2)

E1
b

1.200

0.047 BSC (2)

0.243

0.268

0.047

0.048

0.031 BSC (2)
0.293

0.010

0.011

e0.400 BSC (2)0.016 BSC (2)x10.185 REF (3)0.007 REF (3)x20.185 REF (3)0.007 REF (3)y10.185 REF (3)0.007 REF (3)y20.185 REF (3)0.007 REF (3)

0.012

NOTE:
1. Plastic or metal protrusions of 0.075mm maximum per side are not included.
2. BSC (Basic Spacing between Centers), "Basic" spacing is nominal.
3. REF is the abbreviation for Reference.
4. This drawing is subject to change without notice.

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RS550QFN3X3-16 (2)
Ee

Lb

E1

DD1

N16N5N1TOP VIEW

A1

1.70

3.60

A2

A

0.70

BOTTOM VIEW
0.500.24

SIDE VIEW

1.70
RECOMMENDED LAND PATTERN(Unit: mm)

Dimensions In Millimeters

Dimensions In Inches

MinMaxMinMax

A (1)

0.700

0.800

0.028

0.031

A1

0.000

0.050

0.000

0.002

Symbol

A2

0.203

0.008

b0.180

0.300

0.007

0.012

D (1)

2.900

3.100

0.114

0.122

D1

1.600

1.800

0.063

0.071

E (1)

2.900

3.100

0.114

0.122

E1

1.600

1.800

0.063

0.071

eL

0.500 TYP
0.300

0.020 TYP
0.500

0.012

0.020

NOTE:
1. Plastic or metal protrusions of 0.075mm maximum per side are not included.
2. This drawing is subject to change without notice.

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RS55010 TAPE AND REEL INFORMATIONREEL DIMENSIONSTAPE DIMENSION

Reel
DiameterReel Width(W1)

DIRECTION OF FEEDNOTE: The picture is only for reference. Please make the object as the standard.

KEY PARAMETER LIST OF TAPE AND REELQFN3X3-16

Reel
Diameter
13’’

Reel Width(mm)12.4

A0(mm)
3.35

B0(mm)
3.35

K0(mm)
1.13

P0(mm)
4.0

P1(mm)
8.0P2(mm)
2.0

W(mm)
12.0

Pin1Quadrant
Q1

WLCSP1.6X1.2-127’’

8.3

1.35

1.75

0.70

4.0

4.0

2.0

8.0

Q1

Package TypeNOTE:
1. All dimensions are nominal.
2. Plastic or metal protrusions of 0.15mm maximum per side are not included.

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RS550IMPORTANT NOTICE AND DISCLAIMER
Jiangsu RUNIC Technology Co., Ltd. will accurately and reliably provide technical and reliability data (includingdata sheets), design resources (including reference designs), application or other design advice, WEB tools, safety
information and other resources, without warranty of any defect, and will not make any express or implied
warranty, including but not limited to the warranty of merchantability Implied warranty that it is suitable for a
specific purpose or does not infringe the intellectual property rights of any third party.
These resources are intended for skilled developers designing with RUNIC products You will be solely
responsible for: (1) Selecting the appropriate products for your application; (2) Designing, validating and testing
your application; (3) Ensuring your application meets applicable standards and any other safety, security or otherrequirements; (4) RUNIC and the RUNIC logo are registered trademarks of RUNIC INCORPORATED. All
trademarks are the property of their respective owners; (5) For change details, review the revision history
included in any revised document. The resources are subject to change without notice. Our company will not beliable for the use of this product and the infringement of patents or third-party intellectual property rights due
to its use.

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