MIC5370 MICREL [Micrel Semiconductor], MIC5370 Datasheet

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MIC5370

Manufacturer Part Number
MIC5370
Description
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet

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General Description
The MIC5370/1 is an advanced dual LDO ideal for
powering
MIC5370/1 provides two independently-controlled, high-
performance 150mA LDOs in a tiny 1.6mm x 1.6mm Thin
MLF
Ideal for battery-powered applications, the MIC5370/1
offers 2% initial accuracy, low dropout voltage (155mV @
150mA) and low ground current (typically 32μA per LDO).
The MIC5370/1 can also be put into a zero-off-mode
current state, drawing virtually no current when disabled.
When the MIC5371 is disabled an internal resistive load is
automatically applied to the output to discharge the output
capacitor. This LDO offers fast transient response and
high PSRR while consuming a minimum operating current.
The MIC5370/1 is available in fixed output voltages in a
lead-free (RoHS-compliant) 6-pin 1.6mm x 1.6mm Thin
MLF
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
May 2011
®
®
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
package.
package.
VBAT
general
purpose
portable
1µF
devices.
Camera DSP Power Supply Circuit
MIC5370/1-xxYMT
VIN
EN1
EN2
The
GND
VOUT1
VOUT2
Features
• 2.5V to 5.5V input voltage range
• Two 150mA output current LDOs
• High output accuracy
• Low quiescent current – 32µA per LDO
• Stable with 1µF ceramic output capacitors
• Independent enable pins
• Low dropout voltage – 155mV at 150mA
• Thermal-shutdown protection
• Current-limit protection
• Output discharge circuit – MIC5371
• 6-pin 1.6mm x 1.6mm Thin MLF
Applications
• Camera phones
• Mobile phones
• GPS, PMP, PDAs and handhelds
• Portable electronics
408
) 944-0800 • fax + 1 (408) 474-1000 •
High-Performance Dual 150mA LDO
±2% initial accuracy
1.6mm x 1.6mm Thin MLF
1µF
MIC5370/1
1µF
I/O
VCORE
http://www.micrel.com
®
package
M9999-052011-C
®

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MIC5370 Summary of contents

Page 1

... When the MIC5371 is disabled an internal resistive load is automatically applied to the output to discharge the output capacitor. This LDO offers fast transient response and high PSRR while consuming a minimum operating current. The MIC5370/1 is available in fixed output voltages in a lead-free (RoHS-compliant) 6-pin 1.6mm x 1.6mm Thin ® MLF package ...

Page 2

... Micrel, Inc. Block Diagrams VIN EN1 EN2 VIN EN1 EN2 May 2011 LDO1 LDO2 ENABLE REFERENCE GND MIC5370 Block Diagram LDO1 LDO2 ENABLE AUTO DISCHARGE REFERENCE GND MIC5371 Block Diagram 2 MIC5370/1 VOUT1 VOUT2 VOUT1 VOUT2 M9999-052011-C ...

Page 3

... MIC5370-3.3/1.8YMT MIC5370-3.0/3.0YMT MIC5370-PPYMT MIC5370-3.0/2.8YMT MIC5370-PMYMT MIC5370-3.0/2.6YMT MIC5370-PKYMT MIC5370-3.0/1.8YMT MIC5370-PGYMT MIC5370-2.8/2.8YMT MIC5370-MMYMT MIC5370-2.8/2.6YMT MIC5370-MKYMT MIC5370-2.8/1.8YMT MIC5370-MGYMT MIC5370-MFYMT MIC5370-2.8/1.5YMT MIC5370-2.8/1.2YMT MIC5370-M4YMT MIC5370-1.8/1.2YMT MIC5370-G4YMT MIC5370-1.2/1.0YMT MIC5370-4CYMT MIC5371-3.3/3.3YMT* MIC5371-SSYMT MIC5371-3.3/3.0YMT* MIC5371-SPYMT MIC5371-3 ...

Page 4

... MIC5370/1 Lead Package Finish 6-Pin 1.6mm × 1.6mm Pb-Free ® Thin MLF 6-Pin 1.6mm × 1.6mm Pb-Free ® Thin MLF 6-Pin 1.6mm × 1.6mm Pb-Free ® ...

Page 5

... Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off; Do not leave 4 EN1 floating. 5 VOUT2 Regulator Output – LDO2 6 VOUT1 Regulator Output – LDO1 EPAD HS Pad Heatsink Pad internally connected to ground. May 2011 VIN 1 6 VOUT1 GND 2 5 VOUT2 EN2 3 4 EN1 ® 6-Pin 1.6mm x 1.6mm Thin MLF (MT) 5 MIC5370/1 M9999-052011-C ...

Page 6

... OUT1 OUT2 Min. Typ. –2.0 –3.0 0.02 0.3 55 155 0.05 60 200 325 200 = 3.6V 30 1.2 0.01 0. – θ . Exceeding the maximum allowable power D(max) J(max MIC5370 25°C, bold J Max. Units +2 +3.0 %/V 0 110 mV 310 45 µ µA dB 550 mA µV RMS Ω 0 µA 1 µ ...

Page 7

... TEMPERATURE (°C) Output Noise Spectral Density 10 1 0 OUT 1µF OUT1 OUT2 0.001 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 7 MIC5370/1 Output Voltage vs. Output Current 2.90 2.85 2.80 2. OUT V = 2.8V OUT 1µF IN OUT 2. 100 125 150 OUTPUT CURRENT (mA) Ground Current vs ...

Page 8

... Micrel, Inc. Functional Characteristics May 2011 8 MIC5370/1 M9999-052011-C ...

Page 9

... Micrel, Inc. Application Information MIC5370 dual 150mA LDO in a small 1.6mm x 1.6mm package.. The MIC5371 includes an auto- discharge circuit for each of the LDO outputs that are activated when the output is disabled. The MIC5370/1 regulator is fully protected from damage due to fault conditions through linear current limiting and thermal shutdown ...

Page 10

... Micrel, Inc. For example, when operating the MIC5370-MGYMT at an input voltage of 3.6V and 150mA loads at each output with a minimum footprint layout, the maximum ambient operating temperature T can be determined as follows: A 0.39W = (125°C – T )/(90°C/ 89.9°C A May 2011 Therefore, a 2.8V/1.8V application with 150mA at each output current can accept an ambient operating temperature of 89.9° ...

Page 11

... VOUT1 5 VOUT2 3 4 EN1 EN2 GND C1 2 1µF/10V Manufacturer (1) Murata Capacitor, 1µF Ceramic, 10V, X5R, Size 0402 (2) Micrel Dual, 150mA LDO, Size 1.6mm x 1.6mm Thin MLF 11 J3 VOUT1 J5 VOUT2 J8 EN2 C2 1µF/10V J4 GND J6 GND Description ® M9999-052011-C MIC5370/1 Qty ...

Page 12

... Micrel, Inc. PCB Layout Recommendations May 2011 Top Layer Bottom Layer 12 MIC5370/1 M9999-052011-C ...

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 May 2011 6-Pin 1.6mm x 1.6mm Thin MLF indemnify Micrel for any damages resulting from such use or sale. © 2008 Micrel, Incorporated. 13 ® (MT) http://www.micrel.com M9999-052011-C MIC5370/1 ...

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