MIC2214
Micrel
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 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 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 48
µ
A
• 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
1µF
Ceramic
Keyboard Backlighting LED
GND
V
ANALOG
V
DIGITAL
V
CORE
/RST
Baseband
µProcessor
MEMORY
0.01µF
OFF
ON
SW
SET
C
DELAY
MIC2214 Typical Cellphone Application
Micro
LeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 2004
1
MIC2214
MIC2214
Micrel
Ordering Information
Full Part Number
MIC2214-1.8/2.8BML
MIC2214-1.85/2.6BML
MIC2214-1.85/2.85BML
MIC2214-2.5/1.8BML
MIC2214-2.5/2.8BML
MIC2214-2.5/3.0BML
MIC2214-2.6/2.85BML
MIC2214-2.7/3.0BML
MIC2214-2.7/3.3BML
MIC2214-3.0/1.6BML
MIC2214-3.0/2.8BML
MIC2214-3.0/3.3BML
MIC2214-3.3/1.6BML
MIC2214-3.3/1.8BML
MIC2214-3.3/2.8BML
MIC2214-Adj/AdjBML
Manufacturing
Part Number
MIC2214-GMBML
MIC2214-DKBML
MIC2214-DNBML
MIC2214-JGBML
MIC2214-JMBML
MIC2214-JPBML
MIC2214-KNBML
MIC2214-LPBML
MIC2214-LSBML
MIC2214-PWBML
MIC2214-PMBML
MIC2214-PSBML
MIC2214-SWBML
MIC2214-SGBML
MIC2214-SMBML
MIC2214-AABML
Voltage*
(Vo1/Vo2)
1.8V/2.8V
1.85V/2.6V
1.85V/2.85V
2.5V/1.8V
2.5V/2.8V
2.5V/3.0V
2.6V/2.85V
2.7V/3.0V
2.7V/3.3V
3.0V/1.6V
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
Package
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
10-Pin 3×3 MLF™
16-Pin 4×4 MLF™
* For other output voltage options, contact Micrel marketing.
Voltage
Adj
1.5
1.6
1.8
1.85
1.9
2.0
2.1
2.5
2.6
2.7
2.8
2.850
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Code
A
F
W
G
D
Y
H
E
J
K
L
M
N
O
P
Q
R
S
T
U
V
Table 1. Voltage Codes
MIC2214
2
August 2004
MIC2214
VOUT1
VIN
VIN
Micrel
VOUT2
Pin Configuration
16
EN1 1
EN2 2
15
14
13
12 POR
11 DRV
10 ADJ
9 NGND
VIN
1
EN
2
BYP
3
SW
4
SET
5
10
VOUT1
9
VOUT2
8
POR
7
DRV
6
GND
BYP 3
ADJ1 4
5
SW
6
SET
7
GND
8
GND
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
output 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
output 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
August 2004
3
MIC2214
MIC2214
Micrel
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 2oz. 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
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)
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
Ground Pin Current in Shutdown
Ripple Rejection
V
EN
≤
0.4V
f = 1kHz; C
OUT
= 1.0µF ceramic; C
BYP
= 10nF
f = 20kHz; C
OUT
= 1.0µF ceramic; C
BYP
= 10nF
Current Limit
V
OUT
= 0V (Regulator 1)
V
OUT
= 0V (Regulator 2)
Output Voltage Noise
Enable Input
Enable Input Voltage
Logic Low (Regulator Shutdown)
Logic High (Regulator Enabled)
Enable Input Current
V
IL
< 0.6V (Regulator Shutdown)
V
IH
> 1.8V (Regulator Enabled)
POR Output
V
TH
V
OL
I
POR
Low Threshold, % of nominal V
OUT2
(Flag ON)
High Threshold, % of nominal V
OUT2
(Flag OFF)
POR output logic low voltage; I
L
= 250µA
Flag leakage current, flag OFF
–1
0.02
0.01
90
96
0.1
+1
%
%
V
µA
1.8
–1
–1
0.01
0.01
+1
+1
0.6
V
V
µA
µA
C
OUT
=1µF, C
BYP
=0.01µF, 10Hz to 100kHz
150
300
60
40
280
450
30
460
700
120
240
48
60
2.0
–0.3
–0.6
Conditions
Variation from nominal V
OUT
Min
–1.0
–2.0
40
0.02
0.2
0.3
0.6
1.0
1.5
190
250
340
420
65
80
Typ
Max
+1.0
+2.0
Units
%
%
ppm/C
%/V
%
%
mV
mV
mV
µA
µA
µA
µA
dB
dB
mA
mA
µVrms
MIC2214
4
August 2004
MIC2214
Parameter
DRV Output
Voltage Low
Leakage Current
SW Input Voltage
I
DRV
= 150mA
I
DRV
= 0mA, V
DRV
= 5.5V, SW = 0V
Logic Low (DRV shutdown)
Logic High (DRV enabled)
SW Input Current
V
IL
< 0.6V (DRV shutdown)
V
IH
> 1.8V (DRV enabled)
SET Input
SET Pin Current Source
SET Pin Threshold Voltage
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Micrel
Conditions
Min
Typ
Max
Units
0.2
–1
0.01
0.5
0.6
+1
0.6
V
µA
V
V
µA
µA
µA
V
1.8
–1
–1
0.01
0.01
+1
+1
V
SET
= 0V
P
OR
= High
0.75
1.25
1.25
1.75
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
allowable 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.
August 2004
5
MIC2214
