MIC94305 - 500mA Switch with Ripple Blocker

7/30/2019 MIC94305 - 500mA Switch with Ripple Blocker

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MIC94305

500mA Switch

with Ripple Blocker Technology

Ripple Blocker is a trademark of Micrel, Inc

Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com

September 2012 M9999-091312-A

ns. A low-el

tronic device. The outp

s maintains hig

ckaged in a 6-ball 0.84mm x 1.32mmCSP package, or 6-pin 1.6mm x 1.6mm Thin DFNpackage, and has a junction operating temperature range

of40C to +125C.

Data sheets and support documentation can be found on

Micrels web site at: www.micrel.com

General Description

The MIC94305 is an integrated loadincorporates Micrels Ripple Blocker atechnology. The MIC94305 provides high-freq

switch thatctive filteruency ripple

attenuation (switching noise rejection) forwhere switching noise cannot be tolerated bdownstream circuits, such as RF applicatiovoltage logic enable pin disconnects the passputs the MIC94305 in a low current-shutdowndisabled.

applicationsy sensitive

ement andstate when

The MIC94305 operates from an input voltage3.6V, allowing true load switching of low-vorails in any elec

of 1.8V toltage power

ut voltage (VOUT) isset at a fixed drop (typically 170mV) from the i(V = V 170mV). Thi

nput voltage

OUT IN

independent of given load conditions and currents.h efficiency

The MIC94305 is pa

Features

.

voltage range

n over a wide frequency band

40kHz to 5MHz

t current

Current-limit and thermal-limit protected

Ultra-small 0.84mm x 1.32mm, 6-ball CSP

1.6mm x 1.6mm, 6-pin Thin DFNd enable pin

C junction temperature range

tions

Tablet PC/notebooks and webcams

Digital still and video cameras

Videoconferencing

Bar-code scanners

Global positioning systems

Automotive and industrial applications

_________________________________________________________________________________________________

Typical Application

1.8V to 3.6V input

Active noise rejectio >60dB from

Rated to 500mA outpu

Logic-controlle

40C to +125

Applica

Smart phones

PSRR COUT = 4.7F

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000 10,000 100,00

0

1,000,0

00

10,000,

000

FREQUENCY (Hz)

PSRR(dB)

VIN = 2.5V + 40mVpp 10mA

300mA

10 100 1K 10K 100K 1M 10M

500mA


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Micrel, Inc. MIC94305

September 2012 2 M9999-091312-A

g Informati

er Marking Cod Package Lead Finish

Orderin on

Part Numb e

MIC94305YCS* W1 0.84mm 1.32mm WLCSP Pb-Free

MIC94305YMT1

2W 1.6mm 1.6mm Thin DFN Pb-Free

Notes:

1. Thin DFN is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. availability.

Pin Configur

Contact Micrel Marketing for

ation

6-Ball 0.84mm 1.32mm CSP (CS)Ba

6-Pin 1.6mm 1.6mm Thin DFN (MT)Top View

Note

1. Thin DFN = identifier.

Pin Description

Pin Number(Thin DFN)

Ball Number(CSP)

Pin Name Pin Name

ll View

:

Pin 1

1, 2 A2, B2 VOUT Power switch output.

3 C2 GND Ground.

4 C1 ENEnable input. A logic HIGH signal on this pin enables the part. Logic LOWdisables the output. Do not leave floating.

5, 6 A1, B1 VIN Power switch input and chip supply.

EP ePad Exposed heatsink pad. Connect to Ground for best thermal performance.


3/13


September 2012 3 M9999-091312-A

Functional Block Diagram

MIC94305 Block Diagram


4/13


September 2012 4 M9999-091312-A

0

0

0 Vmperature (sol

Storage Temperature (TS).........................65C to +150C

ESD Rating(3)

..................................................................3kV

................+1.8V to +3.6Vge (V 0V to VIN

.............40C to +125C

0.84mm x 1.32mm WLCSP (JA).....................160C/W

1.6mm x 1.6mm Thin DFN (JA) ........................92C/W

al Characteristics(4)

VIN = VEN = 3.6V; IOUT = 1mA; bold values indicate 40C J + C, unless noted.

Min. Typ. Max. Units

Absolute Maximum Ratings(1)

Input Voltage (VIN) ........................................... .3V to +4V Input Voltage (VIN)........................

Output Voltage (VOUT). .................................... . to 4V lta EN)...............................................

3V + Enable Vo

Enable Voltage (VEN)..................0.3V to VIN+Lead Te dering, 10s)............................

.3 or +4V260C

Junction Temperature (TJ) ..........Junction Thermal Resistance

Operating Ratings(2)

Electric

COUT = 4.7F; TA = 25C, T 125

Parameter Condition

Input Voltage 1.8 3.6 V

Voltage Drop VIN VOUT, 40C TJ+85C 170 250 mV

f = 20kHz, IOUT = 500mA 45VIN Ripple Rejection (PSRR

100kHz to 5MHz, IOUT = 500mA 55

dB)

f =

Total Output Noise f = 10Hz to 100kHz 98 VRMS

Current Limit VOUT = 0V 530 725 1100 mA

Turn-On Time EN controlled 90 150 s

Load Regulation 100A to 100mA 10 mV

Ground Current I = 100A 150 200 AOUT

Shutdown Current VEN = 0V 0.2 5 A

Enable

Input Logic LOW 0.4 V

Input Logic HIGH 1.0 V

Input Current 0.01 1 A

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5k in series with 100pF.

4. Specification for packaged product only.


5/13


September 2012 5 M9999-091312-A

Typical Characteristics

PS

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000

FR

PSRR(dB)

RR COUT = 22F

10,000 100,00

0

1,000,0

00

10,000,

000

EQUENCY (Hz)

VIN = 2.5V + 40mVpp

300mA

10mA

500mA

K 10K 100K 1M 10M10 100 1

PSRR C

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000

FREQ

PSRR(dB)

OUT = 22F

10,000 100,00

0

1,000,0

00

10,000,

000

UENCY (Hz)

VIN = 1.8V + 40mV

10 100 1K

pp

10K 100K 1M 10M

300mA

10mA

PSRR C

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000

FR

PSRR(dB)

OUT = 22F

10,000 100,00

0

1,000,0

00

10,000,

000

EQUENCY (Hz)

VIN = 3.6V + 40m

10 100 1K

Vpp

10K 100K 1M 10M

500mA

10mA

300mA

PSRR C

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000

FRE

PSRR(dB)

OUT = 10F

10,000 100,00

0

1,000,0

00

10,000,

000

QUENCY (Hz)

VIN = 1.8V + 40mV

10 100 1k

pp

10k 100k 1M 10M

500mA

300mA

10mA

PSRR C

-80

-70

-60

-5

-40

-30

-20

-10

0

10 100 1,000 10,000 100,00

0

1,000,0

00

10,000,

000

FREQUENCY (Hz)

PSRR(dB)

OUT = 10F

0

VIN = 2.5V + 40mVpp

300mA

10 100 1k 10k 100k 1M 10M

10mA

500mA

PSRR C

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000

FRE

PSRR(dB)

OUT = 10F

10,000 100,00

0

1,000,0

00

10,000,

000

QUENCY (Hz)

VIN = 3.6V + 40m

10 100 1k

Vpp

10k 100k 1M 10M

500mA

10mA

300mA

PSRR C

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 000 10,000 100,00

0

1,000,0

00

10,000,

000

FREQUENCY (Hz)

PSRR(dB)

OUT = 4.7F

1,

VIN = 1.8V + 40mVpp

10 100 1K 10K 100K 1M 10M

500mA

300mA

10mA

PSRR COUT = 4.7F

-8

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000 10,000 100,00

0

1,000,0

00

10,000,

000

FREQUENCY (Hz)

PSRR(dB)

0

VIN = 2.5V + 40mVpp 10mA

300mA

10 100 1K 10K 100K 1M 10M

500mA

PSRR C

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1,000

FRE

PSRR(dB)

OUT = 4.7F

10,000 100,00

0

1,000,0

00

10,000,

000

QUENCY (Hz)

VIN = 3.6V + 40mVpp

500mA

10mA

300mA

10K 100K 1M 10M10 100 1K


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September 2012 6 M9999-091312-A

Typical Characteristics (Continued)

Output Voltage

vs. Output Current

1.45

1.5

1.55

1.6

1.65

1.7

1.75

1.8

OUTPUTVOLTAGE

(V)

Output Voltage

vs. Output Current

3.35

3.4

3.45

3.5

3.55

3.6

Voltage Drop

vs. Output Current

20

40

60

80

100

120

140

160

180

200

220

240

260

VOLTAGEDROP(m

V)

3.3

0 50 100 150 200 250 300 350 400 450 500

OUTPUTVOLTAGE

(V)

OUTPUT CURRENT (mA)

1.4

0 50 100 150 200 250 300 350 400 450 500

OUTPUT CURRENT (mA)

VIN = 1.8V

CIN = COUT = 4.7FVIN = 3.6V

CIN = COUT = 4.7F

0

0 50 100 150 200 250 300 350 400 450 500

OUTPUT CURRENT (mA)

CIN = COUT = 4.7F

V = 2VIN

Ground Current

vs. Output Current

20

40

60

0

100

120

140

160

0 50 100 150 200 250 300 350 400 450 500

OUTPUT CURRENT (mA)

GROUNDCURRENT(A)

80

VIN = 2.8V

CIN = COUT = 4.7F

Voltage Drop

vs. Input Voltage

160

170

180

190

200

210

220

230

240

250

1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6

INPUT VOLTAGE (V)

VOLTAGEDROP(mV)

MIC94305YMT

Output Noise Spectral Density

0.001

0.01

0.1

1

10

100

NOISEV/Hz

10 100 1,000 10,000 100,00

0

1,000,0

00

10,000,

000

FREQUENCY (Hz)

VIN = VEN1 = 3V

COUT = 4.7F

10 100 1K 10K 100K 1M 10M

1

Ground C

vs. Inp

120

130

140

150

160

170

180

1.8 2 2.2 2.4

INPU

GROUNDCURRENT(A)

urrent

ut Voltage

2.6 2.8 3 3.2 3.4 3.6

T VOLTAGE (V)

CIN = COUT = 4.7F

500mA

CIN = COUT = 4.7F

400mA

500mA

300mA

100mA

300mA

10mA

100mA 50mA


7/13


Functional Characteristics

September 2012 7 M9999-091312-A


8/13


September 2012 8 M9999-091312-A

hnolanceogic

s fully protected from damage caused bffering linear current limiting and t

-banhe in

R cus

capl-valued NPO dielectric-type capt high-frequency noise and are

die tricsdiel ctrics

ure and

of 4 F or ection

ded. Theeram -chipommillatio

anpacitor andcitance.

because of their temp aturecapacitors change capa

aZ5

ctric capacitors change value by as much as50% and 60%, respectively, over their operatingtemperature ranges. If you use a ceramic-chip capacitorwith a Y5V dielectric, the value must be much higherthan an X7R ceramic capacitor to ensure the sameminimum capacitance over the equivalent operatingtemperature range.

No Load Stability

The MIC94305 will remain stable with no load. This is

especially important in CMOS RAM keep-aliveapplications.

active-high enable pinbe disabled. Forcing the94305 and sends it into

currennearly zero. Forcing

high enables the output voltage. Thehigh enable pin uses CMOS technology andenable pin may cause

tput.

to provide 500mA omall package. Maximumcan be calculated based

put current and the voltage drop across themV typical, 250mV worst case

he input voltage is 2.75V, the outpurrent is 500mA. The

ipple Blocker can be

VOUT) IOUT+ VIN IGND

Because this device is CMOS and the ground current isoad range, the powe

und current is


9/13


September 2012 9 M9999-091312-A

ientop rating

the regulator circuit.

ma imum

MIC94305YMT at a

2.75V input voltage and 500mA load with a mi imumfootp m ambient op ratingtemp an be determined as follows:

m a bientowed in a 1.6mmiscussion of heat

regulators, referto the Regulator Thermals section of Micrels De gning

boo Thiscan be found on Micrel's website at:

/other/LDOBk_ds.pdf

Substituting PD for PD(MAX) and solving for the amboperating temperature gives the maximumconditions for

e

For proper operation, do not exceed thepower dissipation.

For example, when operating the

x

nrint layout, the maximu eerature TA c

0.125W = (125C TA)/(92 C/W)

TA = 113.5C

It follows from this equation that the maximuoperating temperature of 113.5C is all

m

x 1.6mm DFN package. For a full dsinking and thermal effects on voltage

si

with Low-Dropout Voltage Regulators handinformation

k.

http://www.micrel.com/_PDF

ls Ripple Blocker

/rippleblocker/

For more information about Micreproducts, go to:

http://www.micrel.com

http://www.micrel.com/page.do?page=/product-info/products/mic94300.jsp

http://www.micrel.com/page.do?page=/product-info/products/mic94310.jsp
http://corpmail.micrel.com/exchweb/bin/redir.asp?URL=http://www.micrel.com/rippleblocker/http://corpmail.micrel.com/exchweb/bin/redir.asp?URL=http://www.micrel.com/page.do?page=/product-info/products/mic94310.jsphttp://corpmail.micrel.com/exchweb/bin/redir.asp?URL=http://www.micrel.com/page.do?page=/product-info/products/mic94310.jsphttp://corpmail.micrel.com/exchweb/bin/redir.asp?URL=http://www.micrel.com/rippleblocker/


10/13


September 2012 10 M9999-091312-A

Ty

pical Application Schematic

Part Number Manufacturer Description Qty.

Bill of Materials

Item75K TDK

(1)Capacitor, 4.7F Ceramic, 10V, X7R, Size 0603 2CIN, COUT C1005X5R1A4

U1 MIC94305YCS Micrel, Inc.(2)

500mA Switch with Ripple Blocker Technology 1

Notes:

1. TDK: www.tdk.com.

2. Micrel, Inc.: www.micrel.com.


11/13


September 2012 11 M9999-091312-A

Package Information(1)

6-Ball 0.84mm 1.32mm WL-CSP (CS)

Note:

1. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.


12/13


September 2012 12 M9999-091312-A

Package Information(1) (Continued)

6-Pin 1.6mm 1.6mm Thin DFN (MT)


13/13


September 2012 13 M9999-091312-A

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USATEL +1 (408) 9 4-1000 WEB http://www.micrel.com44-0800 FAX +1 (408) 47

Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. Thisinformation is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,

specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectualproperty rights is granted by this document. Except as provided in Micrels terms and conditions of sale for such products, Micrel assumes no liability

whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warrantiesrelating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a productcan reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implan

into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. APurchasers use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchasers own risk and Purchaser agrees to fully

indemnify Micrel for any damages resulting from such use or sale.

2012 Micrel, Incorporated.

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MIC94305 - 500mA Switch with Ripple Blocker

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