MIC94310 MICREL [Micrel Semiconductor], MIC94310 Datasheet

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MIC94310

Manufacturer Part Number
MIC94310
Description
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC94310-4YM5
Manufacturer:
MICROCH1P
Quantity:
20 000
Part Number:
MIC94310-GYCS TR
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
MIC94310-GYM5-TR
Manufacturer:
MICROCH1P
Quantity:
20 000
Part Number:
MIC94310-JYMT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
MIC94310-JYMT-TR
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
MIC94310-SYMT-TR
Manufacturer:
MicrelInc
Quantity:
5 650
General Description
The MIC94310 Ripple Blocker™ is a monolithic integrated
circuit that provides low-frequency ripple attenuation
(switching noise rejection) to a regulated output voltage.
This is important for applications where a DC/DC switching
converter is required to lower or raise a battery voltage but
where switching noise cannot be tolerated by sensitive
downstream circuits such as in RF applications. The
MIC94310 maintains high power supply ripple rejection
(PSRR) with input voltages operating near the output
voltage level to improve overall system efficiency. A low-
voltage logic enable pin facilitates ON/OFF control at
typical GPIO voltage levels.
The MIC94310 operates from an input voltage of 1.8V to
3.6V.
Packaged in a 0.88mm x 0.88mm 4-ball CSP or a 4-pin
1.2mm x 1.6mm Thin MLF
operating temperature range of –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
_________________________________________________________________________________________________
Typical Application
February 2012
Ripple Blocker is a trademark of Micrel, Inc
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
®
, the MIC94310 has a junction
Features
• 1.8V to 3.6V input voltage range
• Active noise rejection over a wide frequency band
• Rated to 200mA output current
• Fixed output voltages
• Current-limit and thermal-limit protected
• Ultra-small 0.88mm x 0.88mm 4-ball CSP
• 1.2mm x 1.6mm, 4-pin Thin MLF
• Logic-controlled enable pin
• −40°C to +125°C junction temperature range
Applications
• Smart phones
• Tablet PC/notebooks and webcams
• Digital still and video cameras
• Global positioning systems
• Mobile computing
• Automotive and industrial applications
>50dB from 10Hz to 10MHz at 200mA load
Ripple Blocker™ Technology
200mA LDO with
MIC94310
-100
-120
-20
-40
-60
-80
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
0
10
100
PSRR C
I
OUT
I
OUT
I
OUT
= 200mA
FREQUENCY (Hz)
= 10mA
= 100mA
1K
http://www.micrel.com
®
OUT
10K
= 1µF
V
V
IN
OUT
= 2.5V + 40mVpp
100K
M9999-020612-A
= 1.8V
1M
10M

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MIC94310 Summary of contents

Page 1

... A low- voltage logic enable pin facilitates ON/OFF control at typical GPIO voltage levels. The MIC94310 operates from an input voltage of 1.8V to 3.6V. Packaged in a 0.88mm x 0.88mm 4-ball CSP or a 4-pin ® ...

Page 2

... MIC94310-JYCS Z7 1 MIC94310-MYCS Z6 1 MIC94310-NYCS Z5 MIC94310-PYCS Z4 MIC94310-SYCS Z3 31T MIC94310-4YMT MIC94310-FYMT 32T MIC94310-GYMT 31G 1 MIC94310-DYMT 31D 1 MIC94310-JYMT 31J 1 MIC94310-MYMT 31M 1 MIC94310-NYMT 31N MIC94310-PYMT 31P 31S MIC94310-SYMT Notes: 1. Contact Micrel Marketing for availability. ® 2. Thin MLF ▲ = Pin 1 identifier. ® 3. Thin MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. ...

Page 3

... Enable input. A logic HIGH signal on this pin enables the part. Logic LOW EN disables the part. Do not leave floating. VIN Power switch input and chip supply. ePad Exposed Heatsink Pad. Connect to Ground for best thermal performance. 3 ® 4-Pin 1.2mm × 1.6mm Thin MLF (MT) Top View M9999-020612-A MIC94310 ...

Page 4

... Micrel, Inc. Functional Block Diagram February 2012 4 MIC94310 M9999-020612-A ...

Page 5

... Thin MLF (θ )................................................173°C/W JA CSP (θ ) .........................................................250°C 1µ 25°C, OUT A Min. Typ. 1.8 –3 ± 0.01 170 0 250 400 83 70 1.0 0.01 MIC94310 IN Max. Units 3 100 mV 0.5 % 250 µA 5 µA dB 700 mA μV RMS μs 0 µA M9999-020612-A ...

Page 6

... FREQUENCY (Hz) PSRR C 0 -20 = 2. 200mA OUT I = 100mA OUT -60 -80 + 40mVpp -100 I = 10mA OUT -120 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 1M 10M 10 100 1K FREQUENCY (Hz) MIC94310 = 1µF OUT V = 2.5V + 40mVpp 1.8V OUT 10K 100K 1M 10M = 2.2µF OUT 3.6V IN 10K 100K 1M 10M = 10µF OUT V = 2.5V + 40mVpp 1.8V OUT ...

Page 7

... OUT 1.60 2 2.2 2.4 INPUT VOLTAGE (V) Ground Current vs. Input Voltage 190 180 I = 200mA OUT 170 160 150 140 V =2.8V 130 =1µF IN OUT 120 2 2.2 2.4 INPUT VOLTAGE (V) MIC94310 ) OUT C = 2.2µF OUT C = 10µF OUT C = 4.7µF OUT V = 2.5V + 40mVpp IN LOAD = 100mA V = 1.8V OUT 10K 100K 1M 10M I = 200mA OUT 2.6 2.8 3 3.2 3.4 3 ...

Page 8

... Micrel, Inc. Functional Characteristics February 2012 8 MIC94310 M9999-020612-A ...

Page 9

... This is especially important in CMOS RAM keep-alive applications. February 2012 Enable/Shutdown Forcing the enable (EN) pin low disables the MIC94310 and sends it into a “zero” off mode current state. In this state, current consumed by the MIC94310 goes nearly to zero. Forcing EN high enables the output voltage. The ...

Page 10

... Micrel, Inc. For example, when operating the MIC94310-GYMT at an input voltage of 2.5V and 200mA load with a minimum footprint layout, the operating temperature T can be determined as follows: A 0.14W = (125°C – T )/(173°C/ 101°C A Therefore, the maximum ambient operating temperature allowed in a 1.2mm x 1.6mm Thin MLF 101° ...

Page 11

... Bill of Materials Item Part Number C1, C2 GRM155R61A105KE15D U1 MIC94310xx-YMT Notes: 1. Murata Tel: www.murata.com. 2. Micrel, Inc.: www.micrel.com. February 2012 Manufacturer Description (1) Murata Capacitor, 1µF Ceramic, 10V, X7R, Size 0402 (2) Micrel, Inc. 200mA Ripple Blocker™ with Fixed Output Voltage 11 MIC94310 Qty M9999-020612-A ...

Page 12

... Micrel, Inc. 1 Package Information Note: 1. Package information is correct as of the publication date. For updates and most current information www.micrel.com. February 2012 4-Ball 0.88mm × 0.88mm WL-CSP (CS) 12 MIC94310 M9999-020612-A ...

Page 13

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully February 2012 4-Pin 1.2mm × 1.6mm Thin MLF indemnify Micrel for any damages resulting from such use or sale. © 2012 Micrel, Incorporated. 13 ® (MT) http://www.micrel.com M9999-020612-A MIC94310 nt ...

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