MIC2214
Micrel, Inc.
MIC2214
Portable Power Management IC
General Description
The MIC2214 is a dual µCap low dropout regulator with an
open-drain driver and power-on reset circuit. The first regulator
is capable of sourcing 150mA, while the second regulator can
source up to 300mA and includes a power-on reset function.
The open-drain output is capable of sinking 150mA for LED
backlighting applications.
Ideal for battery operated applications, the MIC2214 offers 1%
accuracy, extremely low dropout voltage (80mV @ 100mA),
and extremely low ground current, only 48µA total. Equipped
with a TTL-logic-compatible enable pin, the MIC2214 can be
put into a zero-off-mode current state, drawing no current
when disabled.
The MIC2214 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2214 is available in fixed output voltages in the
10-pin 3mm
×
3mm MLF™ leadless package and is also
available with adjustable output voltages in the 4mm
×
4mm
16-pin MLF™ package.
Features
• Input voltage range: 2.25V to 5.5V
• Stable with ceramic output capacitor
• 2 LDO outputs
• Output 1 – 150mA output current
• Output 2 – 300mA output current
• 1 Open-drain driver
• Power-on reset function with adjustable delay time
• Low dropout voltage of 80mV @ 100mA
•
Ultra-low quiescent current of 48µA
• High output accuracy:
• +1.0% initial accuracy
• +2.0% over temperature
• Thermal shutdown protection
• Current limit protection
•
Tiny 3mm
×
3mm MLF™-10 package
Applications
• Cellular/PCS phones
• Wireless modems
• PDAs
Typical Application
100kΩ
MIC2214-xxBML
V
IN
1µF
OFF
ON
VIN
EN
CBYP
VOUT1
VOUT2
POR
DRV
V
ANALOG
V
DIGITAL
V
CORE
/RST
Baseband
Processor
1µF
Ceramic
Keyboard Backlighting LED
0.01µF
OFF
ON
SW
SET
MEMORY
C
DELAY
GND
MIC2214 Typical Cellphone Application
MicroLeadFrame
and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 2005
1
M9999-101705
MIC2214
Micrel, Inc.
Ordering Information
Part Number
Full Number
Manufacturing
Pb-Free
MIC2214-1.5/2.8BML
MIC2214-FMBML
MIC2214-FMYML
MIC2214-1.6/2.8BML
MIC2214-WMBML
MIC2214-WMYML
MIC2214-1.6/3.0BML
MIC2214-WPBML
MIC2214-WPYML
MIC2214-1.6/3.3BML
MIC2214-WSBML
MIC2214-WSYML
MIC2214-1.8/2.6BML
MIC2214-GKBML
MIC2214-GKYML
MIC2214-1.8/2.7BML
MIC2214-GLBML
MIC2214-GLYML
MIC2214-1.8/2.8BML
MIC2214-GMBML
MIC2214-GMYML
MIC2214-1.8/2.9BML
MIC2214-GOBML
MIC2214-GOYML
MIC2214-1.8/3.0BML
MIC2214-GPBML
MIC2214-GPYML
MIC2214-1.8/3.3BML
MIC2214-GSBML
MIC2214-GSYML
MIC2214-1.85/2.65BML
MIC2214-DIBML
MIC2214-DIYML
MIC2214-1.85/2.6BML
MIC2214-DKBML
MIC2214-DKYML
MIC2214-1.85/2.7BML
MIC2214-DLBML
MIC2214-DLYML
MIC2214-1.85/2.85BML
MIC2214-DNBML
MIC2214-DNYML
MIC2214-1.85/2.9BML
MIC2214-DOBML
MIC2214-DOYML
MIC2214-2.5/1.8BML
MIC2214-JGBML
MIC2214-JGYML
MIC2214-2.5/2.8BML
MIC2214-JMBML
MIC2214-JMYML
MIC2214-2.5/3.0BML
MIC2214-JPBML
MIC2214-JPYML
MIC2214-2.5/3.1BML
MIC2214-JQBML
MIC2214-JQYML
MIC2214-2.6/2.6BML
MIC2214-KKBML
MIC2214-KKYML
MIC2214-2.6/2.85BML
MIC2214-KNBML
MIC2214-KNYML
MIC2214-2.6/2.8BML
MIC2214-KMBML
MIC2214-KMYML
MIC2214-2.6/3.0BML
MIC2214-KPBML
MIC2214-KPYML
MIC2214-2.7/2.8BML
MIC2214-LMBML
MIC2214-LMYML
MIC2214-2.7/3.0BML
MIC2214-LPBML
MIC2214-LPYML
MIC2214-2.8/2.8BML
MIC2214-MMBML
MIC2214-MMYML
MIC2214-2.8/3.0BML
MIC2214-MPBML
MIC2214-MPYML
MIC2214-2.85/2.85BML
MIC2214-NNBML
MIC2214-NNYML
MIC2214-3.0/1.6BML
MIC2214-PWBML
MIC2214-PWYML
MIC2214-3.0/2.85BML
MIC2214-PNBML
MIC2214-PNYML
MIC2214-3.0/2.8BML
MIC2214-PMBML
MIC2214-PMYML
MIC2214-3.0/3.3BML
MIC2214-PSBML
MIC2214-PSYML
MIC2214-3.3/1.6BML
MIC2214-SWBML
MIC2214-SWYML
MIC2214-3.3/1.8BML
MIC2214-SGBML
MIC2214-SGYML
MIC2214-3.3/2.8BML
MIC2214-SMBML
MIC2214-SMYML
MIC2214-Adj/AdjBML
MIC2214-AABML
MIC2214-AAYML
* Contact factory regarding availability for voltages not listed
Voltage*
(Vo1/Vo2)
1.5V/2.8V
1.6V/2.8V
1.6V/3.0V
1.6V/3.3V
1.8V/2.6V
1.8V/2.7V
1.8V/2.8V
1.8V/2.9V
1.8V/3.0V
1.8V/3.3V
1.85V/2.65V
1.85V/2.6V
1.85V/2.7V
1.85V/2.85V
1.85V/2.9V
2.5V/1.8V
2.5V/2.8V
2.5V/3.0V
2.5V/3.1V
2.6V/2.6V
2.6V/2.85V
2.6V/2.8V
2.6V/3.0V
2.7V/2.8V
2.7V/3.0V
2.8V/2.8V
2.8V/3.0V
2.85V/2.85V
3.0V/1.6V
3.0V/2.85V
3.0V/2.8V
3.0V/3.3V
3.3V/1.6V
3.3V/1.8V
3.3V/2.8V
Adj/Adj
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
Package
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
10-Pin 3x3 MLF™
16-Pin 4x4 MLF™
Voltage
Adj
1.5
1.6
1.8
1.85
1.9
2.0
2.1
2.5
2.6
2.65
Code
A
F
W
G
D
Y
H
E
J
K
I
Voltage
2.7
2.8
2.850
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Table 1. Voltage Codes
Code
L
M
N
O
P
Q
R
S
T
U
V
M9999-101705
2
October 2005
MIC2214
Micrel, Inc.
Pin Configuration
16
EN1 1
15
14
13
12 POR
11 DRV
10 ADJ
9 NGND
5
6
7
8
VIN 1
EN 2
BYP 3
SW 4
SET 5
10 VOUT1
9 VOUT2
8 POR
7 DRV
6 GND
EN2 2
BYP 3
ADJ1 4
10-Pin 3mm
×
3mm MLF™ (ML)
(Top View)
16-Pin 4mm
×
4mm MLF™ (ML)
Pin Description
Pin Number
MLF-10 (3x3)
1
2
–
–
3
4
–
5
Pin Number
MLF-16 (4x4)
15, 16
–
1
2
3
5
4
6
Pin Name
VIN
EN
EN1
EN2
CBYP
SW
ADJ1
SET
Pin Function
Supply Input: (VIN1 and VIN2 are internally tied together)
Enable Input: Enables both regulator outputs. Active High. High = on, low =
off. Do not leave floating.
Enable Input to Regulator 1: Enables regulator 1 output. Active high input.
High = on, low = off. Do not leave floating.
Enable Input to Regulator 2: Enables regulator 2 output. Active high input.
High = on, low = off. Do not leave floating.
Reference Bypass: Connect external 0.01µF to GND to reduce output noise.
May be left open.
Active high signal drives open-drain N-Channel MOSFET.
Adjust Input (Regulator 1): Connect feedback resistors to program the out-
put voltage for the regulator.
Delay Set Input: Connect external capacitor to GND to set the internal delay
for the POR output. When left open, there is no delay. This pin cannot be
grounded.
Ground: Connect externally to exposed pad.
Ground for the open-drain driver. Tied to the source of the NMOSFET. Tied
to GND internally.
Adjust Input (Regulator 2): Connect feedback resistors to program the out-
put voltage for the regulator.
Open-Drain Output: Capable of sinking 150mA.
Power-On Reset Output: Open-drain output. Active low indicates an output
undervoltage condition on regulator 2.
Output of Regulator 2: 300mA output current
Output of Regulator 1: 150mA output current
Ground: Internally connected to the exposed pad. Connect externally to
ground pin.
6
–
–
7
8
9
10
EP
7,8
9
10
11
12
13
14
EP
GND
NGND
ADJ2
DRV
POR
VOUT2
VOUT1
GND
October 2005
3
M9999-101705
MIC2214
Micrel, Inc.
Absolute Maximum Rating
(Note 1)
Supply Input Voltage (V
IN
) ......................................0V to 7V
Enable Input Voltage (V
EN
) ....................................0V to 7V
Power Dissipation (P
D
) ................ Internally Limited,
Note 3
Junction Temperature ............................... –40°C to +125°C
Storage Temperature (T
S
) .......................... –65°C to 150°C
Open-Drain Output (DRV) ........................................ 250mA
Lead Temperature (soldering, 5 sec.) ........................ 260°C
Operating Ratings
(Note 2)
Supply Input Voltage (V
IN
) ..............................2.25V to 5.5V
Enable Input Voltage (V
EN
) ................................... 0V to Vin
Junction Temperature (T
J
) ........................ –40°C to +125°C
Package Thermal Resistance
MLF™-10 (θ
JA
) 1" square 2 oz. copper ............... 60°C/W
Electrical Characteristics
(Note 4)
V
IN
= V
OUT
+1.0V for higher output of the regulator pair; C
OUT
= 1.0µF, I
OUT
= 100µA; T
J
= 25°C,
bold
values indicate
–40°C ≤ T
J
≤ +125°C; unless noted.
Parameter
Conditions
Min
Typ
Output Voltage Accuracy
Output Voltage Temp. Coefficient
Line Regulation;
Note 5
Load Regulation
V
IN
= V
OUT
+1V to 5.5V
I
OUT
= 100µA to 150mA (Regulator 1 and 2)
I
OUT
= 100µA to 300mA (Regulator 2)
–0.3
–0.6
Variation from nominal V
OUT
–1.0
–2.0
40
0.02
0.2
0.3
0.6
1.0
1.5
120
240
48
60
2.0
60
40
150
300
280
450
30
0.6
1.8
–1
–1
90
96
0.02
–1
0.01
0.1
+1
0.01
0.01
+1
+1
460
700
190
250
340
420
65
80
Max
+1.0
+2.0
Units
%
%
ppm/C
%/V
%
%
mV
mV
mV
µA
µA
µA
µA
dB
dB
mA
mA
µVrms
V
V
µA
µA
%
%
V
µA
Dropout Voltage;
Note 6
I
OUT
= 150mA (Regulator 1 and 2)
I
OUT
= 300mA (Regulator 2)
Ground Pin Current
I
OUT1
= I
OUT2
= 0µA
I
OUT1
= 150mA & I
OUT2
= 300mA
f = 1kHz; C
OUT
= 1.0µF ceramic; C
BYP
= 10nF
V
OUT
= 0V (Regulator 1)
V
EN
≤ 0.4V
Ground Pin Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Enable Input
Enable Input Voltage
Enable Input Current
POR Output
V
TH
V
OL
f = 20kHz; C
OUT
= 1.0µF ceramic; C
BYP
= 10nF
V
OUT
= 0V (Regulator 2)
C
OUT
=1µF, C
BYP
=0.01µF, 10Hz to 100kHz
Logic Low (Regulator Shutdown)
Logic High (Regulator Enabled)
V
IH
> 1.8V (Regulator Enabled)
V
IL
< 0.6V (Regulator Shutdown)
High Threshold, % of nominal V
OUT2
(Flag OFF)
POR output logic low voltage; I
L
= 250µA
Flag leakage current, flag OFF
Low Threshold, % of nominal V
OUT2
(Flag ON)
I
POR
M9999-101705
4
October 2005
MIC2214
Parameter
DRV Output
Voltage Low
Leakage Current
SW Input Voltage
SW Input Current
SET Input
SET Pin Current Source
SET Pin Threshold Voltage
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Micrel, Inc.
Conditions
I
DRV
= 150mA
I
DRV
= 0mA, V
DRV
= 5.5V, SW = 0V
Logic Low (DRV shutdown)
V
IL
< 0.6V (DRV shutdown)
Logic High (DRV enabled)
V
IH
> 1.8V (DRV enabled)
V
SET
= 0V
–1
1.8
–1
–1
0.75
0.01
0.01
1.25
1.25
+1
+1
1.75
Min
Typ
0.2
0.01
Max
0.5
0.6
+1
0.6
Units
V
µA
V
V
µA
µA
µA
V
P
OR
= High
Exceeding maximum rating may damage the device.
The device is not guaranteed to work outside its operating rating.
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 allow-
able power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Specification for packaged product only.
Minimum input for line regulation test is set to V
OUT
+ 1V relative to the highest output voltage.
Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential. For outputs below 2.25V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.25V. Minimum
input operating voltage is 2.25V.
October 2005
5
M9999-101705
嵌入式系统
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