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MIC5318
High Performance 300mA µCap ULDO™
General Description
The MIC5318 is a high performance, single output ultra low drop-out (ULDO™) regulator, offering low total output noise in an ultra-small Thin MLF® package. The MIC5318 is capable of sourcing 300mA output current and offers high PSRR and low output noise, making it an ideal solution for RF applications. Ideal for battery operated applications, the MIC5318 offers 2% initial accuracy, extremely low dropout voltage (110mV @ 300mA), and low ground current (typically 85µA total). The MIC5318 can also be put into a zero-off-mode current state, drawing no current when disabled. The MIC5318 is available in the 1.6mm x 1.6mm Thin MLF® package, occupying only 2.56mm2 of PCB area, fully a 36% reduction in board area when compared to SC-70 and 2mm x 2mm MLF® packages. The MIC5318 has an operating junction temperature range of –40°C to +125°C and is available in fixed and adjustable output voltages in lead-free (RoHS compliant) Thin MLF® and Thin SOT23-5 packages. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com.
Features
• • • • • • • • • Ultra low dropout voltage 110mV @ 300mA Input voltage range: 2.3V to 6.0V 300mA guaranteed output current Stable with ceramic output capacitors Ultra low output noise – 30µVrms Low quiescent current – 85µA total High PSRR > 70dB@1kHz Less than 35µs turn-on time High output accuracy – ± 2% initial accuracy – ± 3% over temperature Thermal shutdown and current limit protection Tiny 6-pin 1.6mm x 1.6mm Thin MLF® package Thin SOT23-5 package
• • •
Applications
• • • • • Mobile phones PDAs GPS receivers Portable electronics Digital still and video cameras
Typical Application
MIC5318-x.xYMT
VIN
VIN EN
VOUT
1µF
BYP
GND
1µF
0.01µF
Portable Application
ULDO 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 • http://www.micrel.com
January 2007
M9999-011207
Micrel, Inc.
MIC5318
Functional Diagram
VIN EN VREF QuickStart
VOUT
Error LDO Amp
BYP Thermal Shutdown
Current Limit GND
MIC5318 Block Diagram – Fixed
VIN EN VREF QuickStart
VOUT
Error LDO Amp
BYP ADJ Thermal Shutdown Current Limit GND MIC5318 Block Diagram – Adjustable
January 2007
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M9999-011207
Micrel, Inc.
MIC5318
Ordering Information
Part number MIC5318-1.5YMT MIC5318-1.8YMT MIC5318-2.8YMT MIC5318-3.3YMT MIC5318YMT MIC5318-1.5YD5 MIC5318-1.8YD5 MIC5318-2.8YD5 MIC5318-3.3YD5 MIC5318YD5
Note: For availability on other voltages, please contact Micrel for details.
Marking Code 15D 18D 28D 33D DAA QD15 QD18 QD28 QD33 QDAA
Output Voltage 1.5V 1.8V 2.8V 3.3V ADJ 1.5V 1.8V 2.8V 3.3V ADJ
Temperature Range –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C
Package 6-Pin 1.6 x 1.6 Thin MLF® 6-Pin 1.6 x 1.6 Thin MLF® 6-Pin 1.6 x 1.6 Thin MLF® 6-Pin 1.6 x 1.6 Thin MLF® 6-Pin 1.6 x 1.6 Thin MLF® 5-Pin Thin SOT23 5-Pin Thin SOT23 5-Pin Thin SOT23 5-Pin Thin SOT23 5-Pin Thin SOT23
January 2007
3
M9999-011207
Micrel, Inc.
MIC5318
Pin Configuration
EN 1 GND 2 IN 3 6 5 4 BYP NC OUT
®
EN 1 GND 2 IN 3
6 5 4
BYP ADJ OUT
®
6-Pin 1.6mm x 1.6mm Thin MLF (MT) Fixed (Top View)
6-Pin 1.6mm x 1.6mm Thin MLF (MT) Adjustable (Top View)
EN GND IN 1 3 2
EN GND IN 1 3 2
4 BYP
5 OUT
4 ADJ
5 OUT
5-Pin Thin SOT23 (D5) Fixed (Top View)
5-Pin Thin SOT23 (D5) Adjustable (Top View)
Pin Description
Pin No. Thin MLF-6 Fixed
1 2 3 4 5 – 6 HS Pad
Pin No. Thin MLF-6 Adj.
1 2 3 4 – 5 6 HS Pad
Pin No. Thin SOT23-5 Fixed
3 2 1 5 – – 4 –
Pin No. Thin SOT23-5 Adj.
3 2 1 5 – 4 – –
Pin Name
Pin Function
EN GND IN OUT NC ADJ BYP E PAD
Enable Input. Active High. High = on, low = off. Do not leave floating. Ground Supply Input. Output Voltage. No connection. Adjust Input. Connect to external resistor voltage divider network. Reference Bypass: Connect external 0.01µF to GND for reduced Output Noise. May be left open. Exposed Heatsink Pad connected to ground internally.
January 2007
4
M9999-011207
Micrel, Inc.
MIC5318
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ..................................0V to +6.5V Enable Input Voltage (VEN)........................0V to +6.5V Power Dissipation, Internally Limited(3) Lead Temperature (soldering, 3sec) ..................260°C Junction Temperature (TJ)................ –40°C to +125°C Storage Temperature (TS) ................ –65°C to +150°C ESD Rating(4)
Operating Ratings(2)
Supply Voltage (VIN).............................. +2.3V to +6.0V Enable Input Voltage (VEN).............................. 0V to VIN Junction Temperature (TJ) ................. –40°C to +125°C Junction Thermal Resistance Thin MLF-6 (θJA)...................................... 100°C/W TSOT-23-5 (θJA) .....................