July 2003
1
MIC2214
MIC2214
Micrel
MIC2214
Portable Power Management IC
General Description
The MIC2214 is a dual
Cap low dropout regulator with an
open-drain driver and power-on reset circuit. The first regu-
lator is capable of sourcing 150mA, while the second regula-
tor 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 48
A 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
Cap 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 MLFTM leadless package and is also
available with adjustable output voltages in the 4mm
4mm
16-pin MLFTM package.
Typical Application
VIN
V
IN
C
DELAY
EN
CBYP
SW
0.01
F
1
F
100k
SET
Keyboard Backlighting LED
Baseband
Processor
VOUT1
V
ANALOG
VOUT2
POR
V
DIGITAL
V
CORE
/RST
DRV
GND
MIC2214-xxBML
1
F
Ceramic
OFF
ON
OFF
ON
MEMORY
MIC2214 Typical Cellphone Application
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 48
A
High output accuracy:
+1.0% initial accuracy
+2.0% over temperature
Thermal shutdown protection
Current limit protection
Tiny 3mm
3mm MLFTM-10 package
Applications
Cellular/PCS phones
Wireless modems
PDAs
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
Micro
LeadFrame and MLF are trademarks of Amkor Technology.
MIC2214
Micrel
MIC2214
2
July 2003
Ordering Information
Full Part Number
Manufacturing
Voltage*
Junction Temp. Range
Package
Part Number
(Vo1/Vo2)
MIC2214-1.8/2.8BML
MIC2214-GMBML
1.8V/2.8V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-1.85/2.6BML
MIC2214-DKBML
1.85V/2.6V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-1.85/2.85BML
MIC2214-DNBML
1.85V/2.85V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-2.5/2.8BML
MIC2214-JMBML
2.5V/2.8V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-2.5/3.0BML
MIC2214-JPBML
2.5V/3.0V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-2.6/2.85BML
MIC2214-KNBML
2.6V/2.85V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-2.7/3.0BML
MIC2214-LPBML
2.7V/3.0V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-3.0/1.6BML
MIC2214-PWBML
3.0V/1.6V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-3.0/2.8BML
MIC2214-PMBML
3.0V/2.8V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-3.0/3.3BML
MIC2214-PSBML
3.0V/3.3V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-3.3/1.8BML
MIC2214-SGBML
3.3V/1.8V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-3.3/2.8BML
MIC2214-SMBML
3.3V/2.8V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-3.3/1.6BML
MIC2214-SWBML
3.3V/1.6V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2214-Adj/AdjBML
MIC2214-AABML
Adj/Adj
40
C to +125
C
16-Pin 4
4 MLFTM
* For other output voltage options, contact Micrel marketing.
Voltage
Code
Adj
A
1.5
F
1.6
W
1.8
G
1.85
D
1.9
Y
2.0
H
2.1
E
2.5
J
2.6
K
2.7
L
2.8
M
2.850
N
2.9
O
3.0
P
3.1
Q
3.2
R
3.3
S
3.4
T
3.5
U
3.6
V
Table 1. Voltage Codes
July 2003
3
MIC2214
MIC2214
Micrel
1
2
3
4
12
16
15
14
13
8
7
6
5
11
10
9
EN1
EN2
BYP
ADJ1
POR
DRV
ADJ
NGND
SW
SET
GND
GND
VIN
VIN
V
OUT1
V
OUT2
16-Pin 4mm
4mm MLFTM (ML)
Pin Description
Pin Number
Pin Number
Pin Name
Pin Function
MLF-10 (3x3)
MLF-16 (4x4)
1
15, 16
VIN
Supply Input: (VIN1 and VIN2 are internally tied together)
2
EN
Enable Input: Enables both regulator outputs. Active High. High = on, low =
off. Do not leave floating.
1
EN1
Enable Input to Regulator 1: Enables regulator 1 output. Active high input.
High = on, low = off. Do not leave floating.
2
EN2
Enable Input to Regulator 2: Enables regulator 2 output. Active high input.
High = on, low = off. Do not leave floating.
3
3
CBYP
Reference Bypass: Connect external 0.01
F to GND to reduce output noise.
May be left open.
4
5
SW
Active high signal drives open-drain N-Channel MOSFET.
4
ADJ1
Adjust Input (Regulator 1): Connect feedback resistors to program the
output voltage for the regulator.
5
6
SET
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.
6
7,8
GND
Ground: Connect externally to exposed pad.
9
NGND
Ground for the open-drain driver. Tied to the source of the NMOSFET. Tied
to GND internally.
10
ADJ2
Adjust Input (Regulator 2): Connect feedback resistors to program the
output voltage for the regulator.
7
11
DRV
Open-Drain Output: Capable of sinking 150mA.
8
12
POR
Power-On Reset Output: Open-drain output. Active low indicates an output
undervoltage condition on regulator 2.
9
13
VOUT2
Output of Regulator 2: 300mA output current
10
14
VOUT1
Output of Regulator 1: 150mA output current
EP
EP
GND
Ground: Internally connected to the exposed pad. Connect externally to
ground pin.
1
VIN
EN
BYP
SW
SET
10 VOUT1
VOUT2
POR
DRV
GND
9
8
7
6
2
3
4
5
10-Pin 3mm
3mm MLFTM (ML)
(Top View)
Pin Configuration
MIC2214
Micrel
MIC2214
4
July 2003
Electrical Characteristics
(Note 4)
V
IN
= V
OUT
+1.0V for higher output of the regulator pair; C
OUT
= 1.0
F, I
OUT
= 100
A; T
J
= 25
C, bold values indicate
40
C
T
J
+125
C; unless noted.
Parameter
Conditions
Min
Typ
Max
Units
Output Voltage Accuracy
Variation from nominal V
OUT
1.0
+1.0
%
2.0
+2.0
%
Output Voltage Temp. Coefficient
40
ppm/C
Line Regulation; Note 5
V
IN
= V
OUT
+1V to 5.5V
0.3
0.02
0.3
%/V
0.6
0.6
Load Regulation
I
OUT
= 100
A to 150mA (Regulator 1 and 2)
0.2
1.0
%
I
OUT
= 100
A to 300mA (Regulator 2)
1.5
%
Dropout Voltage; Note 6
I
OUT
= 150mA (Regulator 1 and 2)
120
190
mV
250
mV
I
OUT
= 300mA (Regulator 2)
240
340
mV
420
Ground Pin Current
I
OUT1
= I
OUT2
= 0
A
48
65
A
80
A
I
OUT1
= 150mA & I
OUT2
= 300mA
60
A
Ground Pin Current in Shutdown
V
EN
0.4V
2.0
A
Ripple Rejection
f = 1kHz; C
OUT
= 1.0
F ceramic; C
BYP
= 10nF
60
dB
f = 20kHz; C
OUT
= 1.0
F ceramic; C
BYP
= 10nF
40
dB
Current Limit
V
OUT
= 0V (Regulator 1)
150
280
460
mA
V
OUT
= 0V (Regulator 2)
300
450
700
mA
Output Voltage Noise
C
OUT
=1
F, C
BYP
=0.01
F, 10Hz to 100kHz
30
Vrms
Enable Input
Enable Input Voltage
Logic Low (Regulator Shutdown)
0.6
V
Logic High (Regulator Enabled)
1.8
V
Enable Input Current
V
IL
< 0.6V (Regulator Shutdown)
1
0.01
+1
A
V
IH
> 1.8V (Regulator Enabled)
1
0.01
+1
A
POR Output
V
TH
Low Threshold, % of nominal V
OUT2
(Flag ON)
90
%
High Threshold, % of nominal V
OUT2
(Flag OFF)
96
%
V
OL
POR output logic low voltage; I
L
= 250
A
0.02
0.1
V
I
POR
Flag leakage current, flag OFF
1
0.01
+1
A
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
MLFTM-10 (
JA
) .................................................... 60
C/W
July 2003
5
MIC2214
MIC2214
Micrel
Parameter
Conditions
Min
Typ
Max
Units
DRV Output
Voltage Low
I
DRV
= 150mA
0.2
0.5
V
0.6
Leakage Current
I
DRV
= 0mA, V
DRV
= 5.5V, SW = 0V
1
0.01
+1
A
SW Input Voltage
Logic Low (DRV shutdown)
0.6
V
Logic High (DRV enabled)
1.8
V
SW Input Current
V
IL
< 0.6V (DRV shutdown)
1
0.01
+1
A
V
IH
> 1.8V (DRV enabled)
1
0.01
+1
A
SET Input
SET Pin Current Source
V
SET
= 0V
0.75
1.25
1.75
A
SET Pin Threshold Voltage
P
OR
= High
1.25
V
Note 1.
Exceeding maximum rating may damage the device.
Note 2.
The device is not guaranteed to work outside its operating rating.
Note 3.
The maximum allowable power dissipation of any T
A
(ambient temperature) is (P
D(max)
= T
J(max)
T
A
) /
JA
. Exceeding the maximum
allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Note 4.
Specification for packaged product only.
Note 5.
Minimum input for line regulation test is set to V
OUT
+ 1V relative to the highest output voltage.
Note 6.
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.
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