Micrel MIC5320-2.6/1.85YMT High-performance dual 150ma î¼cap uldoâ ¢ Datasheet

MIC5320
High-Performance Dual 150mA
µCap ULDO™
General Description
Features
The MIC5320 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for portable
electronics. It’s ideal for today’s most demanding
ultra-thin portable applications including mobile
phones, camera modules, imaging sensors for digital
still and video cameras, PDAs, portable media players
(PMP) and PC cameras. The MIC5320 integrates two
high-performance, 150mA ULDOs into a tiny 6-pin
1.6mm x 1.6mm leadless Thin MLF® package, which
provides exceptional thermal package characteristics.
The MIC5320 is a µCap design which enables
operation with very small ceramic output capacitors
for stability, thereby reducing required board space
and component cost. The combination of extremely
low-dropout voltage, fast transient response and
exceptional thermal package characteristics makes it
ideal for portable electronics.
The MIC5320 ULDO™ is available in fixed-output
voltages in the tiny 6-pin 1.6mm x 1.6mm leadless
Thin MLF® package which is only 2.56mm2 in area,
less than 30% the area of the SOT-23, TSOP and
MLF® 3x3 packages. It’s also available in the thin
SOT-23-6 lead package and the standard 6-pin
1.6mm x 1.6mm leadless package. Additional voltage
options are available. For more information, contact
Micrel marketing department.
Data sheets and supporting documentation can be
found on Micrel’s web site at: www.micrel.com.
•
•
•
•
•
•
•
•
•
•
•
2.3V to 5.5V input voltage range
Ultra-low dropout voltage ULDO™ 35mV @
150mA
Tiny 6-pin 1.6mm x 1.6mm Thin MLF® leadless
package
Low-cost TSOT-23-6 package
Independent enable pins
150mA output current per LDO
µCap stable with 1µF ceramic capacitor
Low quiescent current – 85µA per output
Fast turn-on time – 30µs
Thermal-shutdown protection
Current-limit protection
Applications
•
•
•
•
•
•
Mobile phones
PDAs
GPS receivers
Portable electronics
Portable media players
Digital still and video cameras
Typical Application
MIC5320-x.xYMT
1µF
VIN
VOUT 1
VOUT 1
EN 1
VOUT 2
VOUT 2
EN 2
GND
1µF
1µF
Typical Application Circuit
ULDO is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, 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
February 2011
M9999-021111-H
Micrel, Inc.
MIC5320
Ordering Information
MIC5320-1.8/1.5YMT
MIC5320-1.8/1.6YMT
MIC5320-1.8/1.8YMT
MIC5320-2.4/1.5YMT
MIC5320-2.5/1.8YMT
MIC5320-2.5/2.5YMT
MIC5320-2.6/1.85YMT
MIC5320-2.6/1.8YMT
MIC5320-2.7/2.7YMT
MIC5320-2.8/1.5YMT
MIC5320-2.8/1.8YMT
MIC5320-2.8/2.6YMT
MIC5320-2.8/2.8YMT
MIC5320-2.85/1.85YMT
MIC5320-2.85/2.6YMT
MIC5320-2.85/2.85YMT
MIC5320-2.9/1.5YMT
MIC5320-2.9/1.8YMT
MIC5320-2.9/2.9YMT
MIC5320-3.0/1.8YMT
MIC5320-3.0/2.5YMT
MIC5320-3.0/2.6YMT
MIC5320-3.0/2.8YMT
MIC5320-3.0/2.85YMT
MIC5320-3.0/3.0YMT
MIC5320-3.3/1.5YMT
MIC5320-3.3/1.8YMT
MIC5320-3.3/2.5YMT
MIC5320-3.3/2.6YMT
MIC5320-3.3/2.7YMT
Manufacturing
Part Number
MIC5320-GFYMT
MIC5320-GWYMT
MIC5320-GGYMT
MIC5320-H4FYMT
MIC5320-JGYMT
MIC5320-JJYMT
MIC5320-KDYMT
MIC5320-KGYMT
MIC5320-LLYMT
MIC5320-MFYMT
MIC5320-MGYMT
MIC5320-MKYMT
MIC5320-MMYMT
MIC5320-NDYMT
MIC5320-NKYMT
MIC5320-NNYMT
MIC5320-OFYMT
MIC5320-OGYMT
MIC5320-OOYMT
MIC5320-PGYMT
MIC5320-PJYMT
MIC5320-PKYMT
MIC5320-PMYMT
MIC5320-PNYMT
MIC5320-PPYMT
MIC5320-SFYMT
MIC5320-SGYMT
MIC5320-SJYMT
MIC5320-SKYMT
MIC5320-SLYMT***
MIC5320-3.3/2.8YMT
MIC5320-SMYMT
ASM
3.3V/2.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5320-3.3/2.85YMT
MIC5320-3.3/2.9YMT
MIC5320-3.3/3.0YMT
MIC5320-3.3/3.2YMT
MIC5320-3.3/3.3YMT
MIC5320-4.6/2.8YMT
MIC5320-SNYMT
MIC5320-SOYMT
MIC5320-SPYMT
MIC5320-SRYMT
MIC5320-SSYMT
MIC5320-46MYMT
ASN
ASO
ASP
ASR
ASS
46M
3.3V/2.85V
3.3V/2.9V
3.3V/3.0V
3.3V/3.2V
3.3V/3.3V
4.6V/2.8V
–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
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
MIC5320-2.5/1.8YML
MIC5320-JGYML
AJG
2.5V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-2.5/2.5YML
MIC5320-JJYML***
AJJ
2.5V/2.5V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-2.6/1.8YML
MIC5320-KGYML
AKG
2.6V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-2.7/2.7YML
MIC5320-LLYML
ALL
2.7V/2.7V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-2.8/1.5YML
MIC5320-MFYML
AMF
2.8V/1.5V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-2.8/1.8YML
MIC5320-MGYML
AMG
2.8V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-2.8/2.8YML
MIC5320-MMYML
AMM
2.8V/2.8V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-3.0/2.5YML
MIC5320-PJYML
APJ
3.0V/2.5V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-3.0/2.6YML
MIC5320-PKYML
APK
3.0V/2.6V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
Part Number
February 2011
1.8V/1.5V
1.8V/1.6V
1.8V/1.8V
2.4V/1.5V
2.5V/1.8V
2.5V/2.5V
2.6V/1.85
2.6V/1.8V
2.7V/2.7V
2.8V/1.5V
2.8V/1.8V
2.8V/2.6V
2.8V/2.8V
2.85V/1.85V
2.85V/2.6V
2.85V/2.85V
2.9V/1.5V
2.9V/1.8V
2.9V/2.9V
3.0V/1.8V
3.0V/2.5V
3.0V/2.6V
3.0V/2.8V
3.0V/2.85V
3.0V/3.0V
3.3V/1.5V
3.3V/1.8V
3.3V/2.5V
3.3V/2.6V
3.3V/2.7V
Junction
Temp. 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
–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
–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
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
®
6-Pin 1.6x1.6 Thin MLF
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
6-Pin 1.6x1.6 Thin MLF®
Marking*
VOUT1/VOUT2**
AGF
AGW
AGG
H4F
AJG
AJJ
AKD
AKG
ALL
AMF
AMG
AMK
AMM
AND
ANK
ANN
AOF
AOG
AOO
APG
APJ
APK
APM
APN
APP
ASF
ASG
ASJ
ASK
ASL
2
Package
M9999-021111-H
Micrel, Inc.
MIC5320
Part Number
Manufacturing
Part Number
Marking*
VOUT1/VOUT2**
Junction
Temp. Range
Package
MIC5320-3.0/3.0YML
MIC5320-PPYML
APP
3.0V/3.0V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-3.3/1.8YML
MIC5320-SGYML
ASG
3.3V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-3.3/2.5YML
MIC5320-SJYML
ASJ
3.3V/2.5V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-3.3/2.7YML
MIC5320-SLYML***
ASL
3.3V/2.7V
–40°C to +125°C
6-Pin 1.6x1.6 MLF®
MIC5320-3.3/2.8YML
MIC5320-1.8/1.5YD6
MIC5320-1.8/1.8YD6
MIC5320-1.8/1.6YD6
MIC5320-2.4/1.5YD6
MIC5320-2.5/1.8YD6
MIC5320-2.5/2.5YD6
MIC5320-2.6/1.85YD6
MIC5320-2.6/1.8YD6
MIC5320-2.7/2.7YD6
MIC5320-2.8/1.5YD6
MIC5320-2.8/1.8YD6
MIC5320-2.8/2.6YD6
MIC5320-2.8/2.8YD6
MIC5320-2.85/1.85YD6
MIC5320-2.85/2.6YD6
MIC5320-2.85/2.85YD6
MIC5320-2.9/1.5YD6
MIC5320-2.9/1.8YD6
MIC5320-2.9/2.9YD6
MIC5320-3.0/1.8YD6
MIC5320-3.0/2.5YD6
MIC5320-3.0/2.6YD6
MIC5320-3.0/2.8YD6
MIC5320-3.0/2.85YD6
MIC5320-3.0/3.0YD6
MIC5320-3.3/1.5YD6
MIC5320-3.3/1.8YD6
MIC5320-3.3/2.5YD6
MIC5320-3.3/2.6YD6
MIC5320-3.3/2.7YD6
MIC5320-3.3/2.8YD6
MIC5320-3.3/2.85YD6
MIC5320-3.3/2.9YD6
MIC5320-3.3/3.0YD6
MIC5320-3.3/3.2YD6
MIC5320-3.3/3.3YD6
MIC5320-SMYML
MIC5320-GFYD6
MIC5320-GGYD6
MIC5320-GWYD6***
MIC5320-H4FYD6
MIC5320-JGYD6
MIC5320-JJYD6***
MIC5320-KDYD6***
MIC5320-KGYD6
MIC5320-LLYD6
MIC5320-MFYD6
MIC5320-MGYD6
MIC5320-MKYD6
MIC5320-MMYD6
MIC5320-NDYD6***
MIC5320-NKYD6***
MIC5320-NNYD6
MIC5320-OFYD6***
MIC5320-OGYD6***
MIC5320-OOYD6***
MIC5320-PGYD6
MIC5320-PJYD6***
MIC5320-PKYD6
MIC5320-PMYD6***
MIC5320-PNYD6***
MIC5320-PPYD6
MIC5320-SFYD6
MIC5320-SGYD6
MIC5320-SJYD6
MIC5320-SKYD6***
MIC5320-SLYD6***
MIC5320-SMYD6***
MIC5320-SNYD6***
MIC5320-SOYD6***
MIC5320-SPYD6
MIC5320-SRYD6***
MIC5320-SSYD6
ASM
QAGF
QAGG
QAGW
QH4F
QAJG
QAJJ
QAKD
QAKG
QALL
QAMF
QAMG
QAMK
QAMM
QAND
QANK
QANN
QAOF
QAOG
QAOO
QAPG
QAPJ
QAPK
QAPM
QAPN
QAPP
QASF
QASG
QASJ
QASK
QASL
QASM
QASN
QASO
QASP
QASR
QASS
3.3V/2.8V
1.8V/1.5V
1.8V/1.8V
1.8V/1.6V
2.4V/1.5V
2.5V/1.8V
2.5V/2.5V
2.6V/1.85
2.6V/1.8V
2.7V/2.7V
2.8V/1.5V
2.8V/1.8V
2.8V/2.6V
2.8V/2.8V
2.85V/1.85V
2.85V/2.6V
2.85V/2.85V
2.9V/1.5V
2.9V/1.8V
2.9V/2.9V
3.0V/1.8V
3.0V/2.5V
3.0V/2.6V
3.0V/2.8V
3.0V/2.85V
3.0V/3.0V
3.3V/1.5V
3.3V/1.8V
3.3V/2.5V
3.3V/2.6V
3.3V/2.7V
3.3V/2.8V
3.3V/2.85V
3.3V/2.9V
3.3V/3.0V
3.3V/3.2V
3.3V/3.3V
–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
–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
–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
–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
6-Pin 1.6x1.6 MLF®
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
6-Pin TSOT-23
Notes
MLF® is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
*
Under bar( _ )/Over bar ( ¯ ) symbol may not be to scale. Thin MLF (MT) package Pin 1 identified = ▲.
** For other voltages available. Contact Micrel for more details.
*** Contact Micrel Marketing for availability.
February 2011
3
M9999-021111-H
Micrel, Inc.
MIC5320
Pin Configuration
VIN 1
6
VOUT1
GND 2
5
VOUT2
EN2 3
4
EN1
VIN
GND
EN2
3
2
1
4
5
6
VOUT1 VOUT2 EN1
6-Pin 1.6mm x 1.6mm Thin MLF (MT) / MLF (ML)
Top View
TSOT-23-6 (D6)
Top View
Pin Description
Pin Number
Thin MLF-6 /
MLF-6
Pin Number
TSOT-23-6
Pin Name
Pin Function
1
3
VIN
Supply Input.
2
2
GND
Ground
3
1
EN2
Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
4
6
EN1
Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
5
5
VOUT2
Regulator Output – LDO2
6
4
VOUT1
Regulator Output – LDO1
HS Pad
–
EPAD
February 2011
Exposed heatsink pad connected to ground internally.
4
M9999-021111-H
Micrel, Inc.
MIC5320
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN) .....................................0V to +6V
Enable Input Voltage (VEN)...........................0V to +6V
Power Dissipation………………… Internally Limited(3)
Lead Temperature (soldering, 3sec) ..................260°C
Storage Temperature (TS) ................ –65°C to +150°C
ESD Rating(4) .........................................................2kV
Supply Voltage (VIN).............................. +2.3V to +5.5V
Enable Input Voltage (VEN).............................. 0V to VIN
Junction Temperature (TJ) ................. –40°C to +125°C
Junction Thermal Resistance
Thin MLF-6 / MLF-6 (θJA) ........................ 100°C/W
TSOT-6 (θJA) ........................................... 235°C/W
Electrical Characteristics(5)
VIN = EN1 = EN2 = VOUT + 1.0V; higher of the two regulator outputs, IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 1µF;
TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Conditions
Min
Output Voltage Accuracy
Variation from nominal VOUT
Variation from nominal VOUT; –40°C to +125°C
Line Regulation
Load Regulation
Dropout Voltage
(6)
Ground Current
Typ
Max
Units
-2.0
+2.0
%
-3.0
+3.0
%
VIN = VOUT + 1V to 5.5V; IOUT = 100µA
0.02
0.3
0.6
%/V
%/V
IOUT = 100µA to 150mA
0.5
2
%
IOUT = 100µA
0.1
mV
IOUT = 50mA
12
50
IOUT = 100mA
25
75
mV
mV
IOUT = 150mA
35
100
mV
EN1 = High; EN2 = Low; IOUT = 100µA to 150mA
85
120
µA
EN1 = Low; EN2 = High; IOUT = 100µA to 150mA
85
120
µA
EN1 = EN2 = High; IOUT1 = 150mA, IOUT2 = 150mA
150
190
µA
Ground Current in Shutdown
EN1 = EN2 = 0V
0.01
2
µA
Ripple Rejection
f = 1kHz; COUT = 1.0µF
65
f=20kHz; COUT = 1.0µF
Current Limit
VOUT = 0V
Output Voltage Noise
COUT = 1.0µF; 10Hz to 100KHz
dB
45
300
550
dB
950
90
mA
µVRMS
Enable Inputs (EN1 / EN2)
Enable Input Voltage
0.2
Logic Low
1.1
Logic High
Enable Input Current
V
V
VIL ≤ 0.2V
0.01
1
µA
VIH ≥ 1.0V
0.01
1
µA
30
100
µs
Turn-on Time (See Timing Diagram)
Turn-on Time (LDO1 and 2)
Notes:
COUT = 1.0µF
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = TJ(max) – TA) / θJA. Exceeding the maximum allowable
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
5. Specification for packaged product only.
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal VOUT. For outputs below 2.3V,
the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.
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MIC5320
Functional Diagram
VIN
VOUT 1
LDO1
LDO2
VOUT 2
EN 1
EN 2
Enable
Reference
GND
MIC5320 Block Diagram
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MIC5320
Typical Characteristics
-80
Power Supply
Rejection Ratio
40
-70
35
-60
30
-50
150mA
-40
25
20
-30
15
-20
10
50mA
VIN = VOUT +1V
=
2.8V
V
-10 OUT
COUT = 1µF
0
0.1
1
10
100
1,000
FREQUENCY (kHz)
100
Ground Current
vs. Temperature
95
80
75
70
0
02
100
55 07 5 100 125 150
OUTPUT CURRENT (mA)
Ground Current
vs. Temperature
85
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
EN1 = VIN
EN2 = GND
20 40 60 80
TEMPERATURE (°C)
50
VIN = VOUT + 1V
45 VOUT = 2.8V
40 COUT = 1µF
35
80
75
70
2.90
3.00
2.95
2.90
2.85
2.80
2.75
2.70
2.65
2.60
2.55
2.50
3.0
2.5
90
100µA
Dropout Voltage
vs. Temperature
Output Voltage
vs. Temperature
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
EN1 = VIN
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Input Voltage
2.8V
2.0
150mA
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
EN1 = VIN
EN2 = GND
20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Output Current
1.5
1.5V
1.0
0.5
IOUT = 100µA
COUT = 1µF
0.0
0123456
INPUT VOLTAGE (V)
1.60
Output Voltage
vs. Output Current
150mA
2.85
1.55
2.80
1.50
VIN = VOUT + 1V
2.75 VOUT = 2.8V
COUT1 = COUT2 = 1µF
EN1 = VIN
EN2 = GND
2.70
02
5 50 75 100 125 150
OUTPUT CURRENT (mA)
VIN = VOUT + 1V
1.45 VOUT = 1.5V
COUT1 = COUT2 = 1µF
EN1 = GND
EN2 = VIN
1.40
02
5 50 75 100 125 150
OUTPUT CURRENT (mA)
100mA
30
25
20
15
10
5
0
5
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
EN1 = VIN
95
90
85
Dropout Voltage
vs. Output Current
50mA
10mA
100µA
20 40 60 80
TEMPERATURE (°C)
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Micrel, Inc.
MIC5320
Typical Characteristics (Continued)
Ground Current
vs. Output Current
90
162
Ground Current
vs. Output Current
158
85
154
80
150
VIN = VOUT + 1V
VOUT = 2.85V
EN1 = VIN
COUT1 = 1µF
75
70
02
55 07 5 100 125 150
OUTPUT CURRENT (mA)
146
142
02
VIN = VOUT + 1V
VOUT = 2.85V
EN1 = EN2 = VIN
COUT1 = COUT2 = 1µF
55 07 5 100 125 150
OUTPUT CURRENT (mA)
610
600
590
580
570
560
550
540
530
520
510
3
Current Limit
vs. Input Voltage
EN1 = VIN
COUT = 1µF
3.5
4
4.5
5
INPUT VOLTAGE (V)
5.5
Output Noise
Spectral Density
10
0.1
0.01
VIN = 4V
VOUT = 2.8V
COUT = 1µF
ILOAD = 50mA
0.001
0.01
0.1
1
10
100 1,000
FREQUENCY (kHz)
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Micrel, Inc.
MIC5320
Functional Characteristics
Enable Turn-On
EN1
(1V/div)
Output Voltag e
(20mV/div)
Load Transient
150mA
VIN = VOUT + 1V
VOUT = 2.8V
Output Current
(50mA/div)
COUT = 1µF
VIN = VOUT + 1V
VOUT1
(1V/div)
VOUT = 2.8V
COUT = 1µF
10mA
Time (10µs/div )
Time (40µs/div )
Line Transient
5.5V
Input Voltag e
(2V/div)
4V
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
Output Voltag e
(50mV/div)
IOUT = 10mA
Time (40µs/div )
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MIC5320
Applications Information
Enable/Shutdown
The MIC5320 comes with dual active-high enable pins
that allow each regulator to be disabled
independently. Forcing the enable pin low disables the
regulator and sends it into a “zero” off-mode-current
state. In this state, current consumed by the regulator
goes nearly to zero. Forcing the enable pin high
enables the output voltage. The active-high enable pin
uses CMOS technology and the enable pin cannot be
left floating; a floating enable pin may cause an
indeterminate state on the output.
Thermal Considerations
The MIC5320 is designed to provide 150mA of
continuous current for both outputs in a very small
package. Maximum ambient operating temperature
can be calculated based on the output current and the
voltage drop across the part. Given that the input
voltage is 3.3V, the output voltage is 2.8V for VOUT1,
1.5V for VOUT2 and the output current = 150mA. The
actual power dissipation of the regulator circuit can be
determined using the equation:
Input Capacitor
The MIC5320 is a high-performance, high bandwidth
device. Therefore, it requires a well-bypassed input
supply for optimal performance. A 1µF capacitor is
required from the input to ground to provide stability.
Low-ESR ceramic capacitors provide optimal
performance at a minimum of space. Additional highfrequency capacitors, such as small-valued NPO
dielectric-type capacitors, help filter out highfrequency noise and are good practice in any RFbased circuit.
PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) IOUT2+
VIN IGND
Output Capacitor
The MIC5320 requires an output capacitor of 1µF or
greater to maintain stability. The design is optimized
for use with low-ESR ceramic chip capacitors. High
ESR capacitors may cause high frequency oscillation.
The output capacitor can be increased, but
performance has been optimized for a 1µF ceramic
output capacitor and does not improve significantly
with larger capacitance.
X7R/X5R dielectric-type ceramic capacitors are
recommended because of their temperature
performance.
X7R-type
capacitors
change
capacitance by 15% over their operating temperature
range and are the most stable type of ceramic
capacitors. Z5U and Y5V dielectric capacitors change
value by as much as 50% and 60%, respectively, over
their operating temperature ranges. To use a ceramic
chip capacitor with Y5V dielectric, the value must be
much higher than an X7R ceramic capacitor to ensure
the same minimum capacitance over the equivalent
operating temperature range.
Because this device is CMOS and the ground current
is typically <150µA over the load range, the power
dissipation contributed by the ground current is < 1%
and can be ignored for this calculation.
PD = (3.3V – 2.8V) × 150mA + (3.3V -1.5) ×
150mA
PD = 0.345W
To determine the maximum ambient operating
temperature of the package, use the junction-toambient thermal resistance of the device and the
following basic equation:
PD(MAX) =
TJ(MAX) - TA
JA
TJ(max) = 125°C, the maximum junction temperature of
the die θJA thermal resistance = 100°C/W.
The table below shows junction-to-ambient thermal
resistance for the MIC5320 in different packages.
Package
θJA Recommended
Minimum Footprint
θJC
6-Pin 1.6x1.6 Thin MLF®
100°C/W
2°C/W
Thermal Resistance
No-Load Stability
Unlike many other voltage regulators, the MIC5320
will remain stable and in regulation with no load. This
is especially important in CMOS RAM keep-alive
applications.
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⎝
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Micrel, Inc.
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum
operating conditions for the regulator circuit. The
junction-to-ambient thermal resistance for the
minimum footprint is 100°C/W.
The maximum power dissipation must not be
exceeded for proper operation.
For example, when operating the MIC5320-MFYMT at
an input voltage of 3.3V and 150mA loads at each
output with a minimum footprint layout, the maximum
ambient operating temperature TA can be determined
as follows:
MIC5320
Therefore, a 2.8V/1.5V application with 150mA at
each output current can accept an ambient operating
temperature of 90.5°C in a 1.6mm x 1.6mm Thin
MLF® package. For a full discussion of heat sinking
and thermal effects on voltage regulators, refer to the
“Regulator Thermals” section of Micrel’s Designing
with Low-Dropout Voltage Regulators handbook. This
information can be found on Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
0.345W = (125°C – TA)/(100°C/W)
TA = 90.5°C
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M9999-021111-H
Micrel, Inc.
MIC5320
Package Information
6-Pin 1.6mm x 1.6mm Thin MLF (MT)
6-Pin 1.6mm x 1.6mm MLF (ML)
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Micrel, Inc.
MIC5320
6-Pin TSOT-23 (D6)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information 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 intellectual
property rights is granted by this document. Except as provided in Micrel’s 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
warranties relating 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 product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant 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. A 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 indemnify Micrel for any damages resulting from such use or sale.
© 2006 Micrel, Incorporated.
February 2011
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