MIC5321
Dual, High Performance
150mA µCap ULDO™
General Description
The MIC5321 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for those
applications that require high PSRR because it
provides a bypass pin for those noise sensitive
portable electronics. The MIC5321 integrates two
high-performance; 150mA ULDOs into a very compact
1.6mm x 1.6mm leadless Thin MLF
®
package that
provides exceptional thermal package characteristics.
The MIC5321 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-drop-out voltage, very high power supply
rejection, very low output noise and exceptional
thermal package characteristics makes it ideal for
powering RF application, cellular phone camera
modules, imaging sensors for digital still cameras,
PDAs, MP3 players and WebCam applications.
The MIC5321 ULDO™ is available in fixed-output
voltages in the tiny 6-pin 1.6mm x 1.6mm leadless
Thin MLF
®
package which is only 2.56mm
2
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 support documentation can be found
on Micrel’s web site at www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
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
Bypass pin for improved noise performance
High PSRR – >75dB on each LDO
Ultra low noise output - > 30µVrms
Dual 150mA outputs
µCap stable with 1µF ceramic capacitor
Low quiescent current – 150µA
Fast turn-on time – 45µs
Thermal shutdown protection
Current Limit protection
Applications
•
•
•
•
•
•
Mobile phones
PDAs
GPS receivers
Portable electronics
Portable media players
Digital still and video cameras
Typical Application
MIC5321-x.xYML
VIN
VOUT 1
VOUT 2
1µF
EN
BYP
0.01µF
GND
1µF
1µF
RF
Transceiver
Rx/Synth
Tx
RF Power Supply Circuit
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
May 2008
M9999-051508-E
Micrel, Inc.
MIC5321
Ordering Information
Part number
MIC5321-1.8/1.5YMT
MIC5321-1.8/1.8YMT
MIC5321-1.8/1.6YMT
MIC5321-2.5/1.8YMT
MIC5321-2.5/2.5YMT
MIC5321-2.6/1.85YMT
MIC5321-2.6/1.8YMT
MIC5321-2.7/2.7YMT
MIC5321-2.8/1.5YMT
MIC5321-2.8/1.8YMT
MIC5321-2.8/2.6YMT
MIC5321-2.8/2.8YMT
MIC5321-2.85/1.85YMT
MIC5321-2.85/2.6YMT
MIC5321-2.85/2.85YMT
MIC5321-2.9/1.5YMT
MIC5321-2.9/1.8YMT
MIC5321-2.9/2.9YMT
MIC5321-3.0/1.8YMT
MIC5321-3.0/2.5YMT
MIC5321-3.0/2.6YMT
MIC5321-3.0/2.8YMT
MIC5321-3.0/2.85YMT
MIC5321-3.0/3.0YMT
MIC5321-3.3/1.5YMT
MIC5321-3.3/1.8YMT
MIC5321-3.3/2.5YMT
MIC5321-3.3/2.6YMT
MIC5321-3.3/2.7YMT
MIC5321-3.3/2.8YMT
MIC5321-3.3/2.85YMT
MIC5321-3.3/2.9YMT
MIC5321-3.3/3.0YMT
MIC5321-3.3/3.2YMT
MIC5321-3.3/3.3YMT
MIC5321-2.8/1.5YML
MIC5321-2.8/1.8YML
MIC5321-2.8/2.8YML
MIC5321-3.0/3.0YML
Manufacturing
Part Number
MIC5321-GFYMT
MIC5321-GGYMT
MIC5321-GWYMT
MIC5321-JGYMT
MIC5321-JJYMT
MIC5321-KDYMT
MIC5321-KGYMT
MIC5321-LLYMT
MIC5321-MFYMT
MIC5321-MGYMT
MIC5321-MKYMT
MIC5321-MMYMT
MIC5321-NDYMT
MIC5321-NKYMT
MIC5321-NNYMT
MIC5321-OFYMT
MIC5321-OGYMT
MIC5321-OOYMT
MIC5321-PGYMT
MIC5321-PJYMT
MIC5321-PKYMT
MIC5321-PMYMT
MIC5321-PNYMT
MIC5321-PPYMT
MIC5321-SFYMT
MIC5321-SGYMT
MIC5321-SJYMT
MIC5321-SKYMT
MIC5321-SLYMT***
MIC5321-SMYMT
MIC5321-SNYMT
MIC5321-SOYMT
MIC5321-SPYMT
MIC5321-SRYMT
MIC5321-SSYMT
MIC5321-MFYML
MIC5321-MGYML
MIC5321-MMYML
MIC5321-PPYML
Marking*
BGF
BGG
BGW
BJG
BJJ
BKD
BKG
BLL
BMF
BMG
BMK
BMM
BND
BNK
BNN
BOF
BOG
BOO
BPG
BPJ
BPK
BPM
BPN
BPP
BSF
BSG
BSJ
BSK
BSL
BSM
BSN
BSO
BSP
BSR
BSS
BMF
BMG
BMM
BPP
Voltage**
1.8V/1.5V
1.8V/1.8V
1.8V/1.6V
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
2.8V/1.5V
2.8V/1.8V
2.8V/2.8V
3.0V/3.0V
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
–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 1.6x1.6 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
®
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 MLF
®
6-Pin 1.6x1.6 MLF
®
6-Pin 1.6x1.6 MLF
®
6-Pin 1.6x1.6 MLF
®
May 2008
2
M9999-051508-E
Micrel, Inc.
MIC5321
Part number
MIC5321-1.8/1.5YD6
MIC5321-1.8/1.8YD6
MIC5321-1.8/1.6YD6
MIC5321-2.5/1.8YD6
MIC5321-2.5/2.5YD6
MIC5321-2.6/1.85YD6
MIC5321-2.6/1.8YD6
MIC5321-2.7/2.7YD6
MIC5321-2.8/1.5YD6
MIC5321-2.8/1.8YD6
MIC5321-2.8/2.6YD6
MIC5321-2.8/2.8YD6
MIC5321-2.85/1.85YD6
MIC5321-2.85/2.6YD6
MIC5321-2.85/2.85YD6
MIC5321-2.9/1.5YD6
MIC5321-2.9/1.8YD6
MIC5321-2.9/2.9YD6
MIC5321-3.0/1.8YD6
MIC5321-3.0/2.5YD6
MIC5321-3.0/2.6YD6
MIC5321-3.0/2.8YD6
MIC5321-3.0/2.85YD6
MIC5321-3.0/3.0YD6
MIC5321-3.3/1.5YD6
MIC5321-3.3/1.8YD6
MIC5321-3.3/2.5YD6
MIC5321-3.3/2.6YD6
MIC5321-3.3/2.7YD6
MIC5321-3.3/2.8YD6
MIC5321-3.3/2.85YD6
MIC5321-3.3/2.9YD6
MIC5321-3.3/3.0YD6
MIC5321-3.3/3.2YD6
MIC5321-3.3/3.3YD6
Notes
*
Manufacturing
Part Number
MIC5321-GFYD6
MIC5321-GGYD6
MIC5321-GWYD6***
MIC5321-JGYD6***
MIC5321-JJYD6***
MIC5321-KDYD6***
MIC5321-KGYD6***
MIC5321-LLYD6
MIC5321-MFYD6
MIC5321-MGYD6
MIC5321-MKYD6
MIC5321-MMYD6
MIC5321-NDYD6***
MIC5321-NKYD6***
MIC5321-NNYD6***
MIC5321-OFYD6***
MIC5321-OGYD6***
MIC5321-OOYD6***
MIC5321-PGYD6
MIC5321-PJYD6***
MIC5321-PKYD6***
MIC5321-PMYD6***
MIC5321-PNYD6***
MIC5321-PPYD6
MIC5321-SFYD6***
MIC5321-SGYD6***
MIC5321-SJYD6
MIC5321-SKYD6***
MIC5321-SLYD6***
MIC5321-SMYD6***
MIC5321-SNYD6***
MIC5321-SOYD6***
MIC5321-SPYD6***
MIC5321-SRYD6***
MIC5321-SSYD6
Marking*
QBGF
QBGG
QBGW
QBJG
QBJJ
QBKD
QBKG
QBLL
QBMF
QBMG
QBMK
QBMM
QBND
QBNK
QBNN
QBOF
QBOG
QBOO
QBPG
QBPJ
QBPK
QBPM
QBPN
QBPP
QBSF
QBSG
QBSJ
QBSK
QBSL
QBSM
QBSN
QBSO
QBSP
QBSR
QBSS
Voltage**
1.8V/1.5V
1.8V/1.8V
1.8V/1.6V
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
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
–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 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
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.
May 2008
3
M9999-051508-E
Micrel, Inc.
MIC5321
Pin Configuration
VIN
3
VIN 1
GND 2
BYP 3
6
5
4
VOUT1
VOUT2
EN
4
5
6
EN
VOUT1 VOUT2
GND
2
BYP
1
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
1
2
3
4
5
6
HS Pad
Pin Number
TSOT-23-6
3
2
1
6
5
4
–
Pin Name
Pin Function
VIN
GND
BYP
EN
VOUT2
VOUT1
EPAD
Supply Input.
Ground
Reference Bypass: Connect external 0.01µF to GND to reduce output noise.
May be left open.
Enable Input (both regulators): Active High Input. Logic High = On; Logic
Low = Off; Do not leave floating.
Regulator Output – LDO2
Regulator Output – LDO1
Exposed heatsink pad connected to ground internally.
May 2008
4
M9999-051508-E
Micrel, Inc.
MIC5321
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) .....................................0V to +6V
Enable Input Voltage (V
EN
)...........................0V to +6V
Power Dissipation………………….Internally Limited
(3)
Lead Temperature (soldering, 3sec) ..................260°C
Storage Temperature (T
S
) ................ –65°C to +150°C
ESD Rating
(4)
.........................................................2kV
Operating Ratings
(2)
Supply Voltage (V
IN
).............................. +2.3V to +5.5V
Enable Input Voltage (V
EN
).............................. 0V to V
IN
Junction Temperature (T
J
) ................. –40°C to +125°C
Junction Thermal Resistance
Thin MLF-6 / MLF-6 (θ
JA
) ....................... 100°C/W
TSOT-6 (θ
JA
) ........................................... 235°C/W
Electrical Characteristics
(5)
V
IN
= EN = V
OUT
+ 1.0V; higher of the two regulator outputs, I
OUTLDO1
= I
OUTLDO2
= 100µA; C
OUT1
= C
OUT2
= 1µF;
C
BYP
= 0.01µF; T
J
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
(6)
Conditions
Variation from nominal V
OUT
Variation from nominal V
OUT
; –40°C to +125°C
V
IN
= V
OUT
+ 1V to 5.5V; I
OUT
= 100µA
I
OUT
= 100µA to 150mA
I
OUT
= 100µA
I
OUT
= 50mA
I
OUT
= 100mA
I
OUT
= 150mA
Min
-2.0
Typ
Max
+2.0
Units
%
%
%/V
%/V
%
mV
mV
mV
mV
µA
µA
dB
dB
-3.0
0.02
0.5
0.1
12
25
35
150
0.01
75
45
+3.0
0.3
0.6
2.0
50
75
100
190
2
Ground Current
Ground Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
EN = High; I
OUT1
= 150mA, I
OUT2
= 150mA
EN1
≤
0.2V
f = 1kHz; C
OUT
= 1.0µF; C
BYP
= 0.1µF
f = 20kHz; C
OUT
= 1.0µF; C
BYP
= 0.1µF
V
OUT
= 0V
C
OUT
= 1.0µF; C
BYP
= 0.01µF; 10Hz to 100kHz
Logic Low
Logic High
300
550
30
950
mA
µV
RMS
Enable Inputs (EN)
Enable Input Voltage
Enable Input Current
0.2
1.1
0.01
0.01
40
45
1
1
V
V
µA
µA
µs
µs
V
IL
≤
0.2V
V
IH
≥
1.0V
Turn-on Time (See Timing Diagram)
Turn-on Time (LDO1 and 2)
Notes:
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 T
A
(ambient temperature) is P
D(max)
= (T
J(max)
– T
A
) /
θ
JA
. 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 it’s nominal V
OUT
. For outputs below 2.3V,
the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V
C
OUT
= 1.0µF; No C
BYP
C
OUT
= 1.0µF; C
BYP
= 0.01µF
100
100
May 2008
5
M9999-051508-E
