November 2004
1
MIC2210
MIC2210
Micrel
MIC2210
Dual Cap LDO with Open-Drain Driver
REV. 11/04
General Description
The MIC2210 is a dual Cap 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 MIC2210 offers 1%
accuracy, extremely low dropout voltage (80mV @ 100mA),
and extremely low ground current, only 48A total. Equipped
with a TTL logic compatible enable pin*, the MIC2210 can
be put into a zero-off-mode current state, drawing no current
when disabled.
The MIC2210 is a Cap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2210 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.
* For each output.
Typical Application
MIC2210 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
Low dropout voltage of 80mV @ 100mA
Ultra-low quiescent current of 48A
High output accuracy:
+1.0% initial accuracy
+2.0% over temperature
Thermal shutdown protection
Current limit protection
Tiny 10-pin 3mm 3mm MLFTM package
Applications
Cellular/PCS phones
Wireless modems
PDAs
Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
VIN
C
BYP
EN1
EN2
CBYP
SW
LED x10
Keyboard
Backlight
Baseband IC
VOUT1
Audio Amp
VOUT2
ERR
DRV
GND
MIC2210-xxBML
1 F
1 F
MIC2210
Micrel
MIC2210
2
November 2004
Ordering Information
Full Part NUmber
Manufacturing
Part Number
Pb-FREE
Voltage*
(Vo1/Vo2)
Junction Temp. Range
Package
MIC2210-3.0/3.3BML
MIC2210-PSBML
3.0V/3.3V
-40C to +125C
10-Pin 3x3 MLF
TM
MIC2210-1.8/3.3BML
MIC2210-GSBML
1.8V/3.3V
-40C to +125C
10-Pin 3x3 MLF
TM
MIC2210-2.8/1.6YML
MIC2210-MWYML
X
2.8V/1.6V
-40C to +125C
10-Pin 3x3 MLF
TM
MIC2210-3.0/3.3YML
MIC2210-PSYML
X
3.0V/3.3V
-40C to +125C
10-Pin 3x3 MLF
TM
MIC2210-3.3/3.3YML
MIC2210-SSYML
X
3.3V/3.3V
-40C to +125C
10-Pin 3x3 MLF
TM
* 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
November 2004
3
MIC2210
MIC2210
Micrel
Pin Description
Pin Number
Pin Name
Pin Function
MLF-10 (3x3)
1
VIN
Supply Input: (VIN1 and VIN2 are internally tied together.)
2
EN1
Enable Input to Regulator 1: Enables regulator 1 output. Active high
input. High = on, low = off. Do not leave floating.
3
EN2
Enable Input to Regulator 2: Enables regulator 2 output. Active high
input. High = on, low = off. Do not leave floating.
4
CBYP
Reference Bypass: Connect external 0.01F to GND to reduce output
noise. May be left open.
5
SW
Active high signal drives open-drain N-channel MOSFET.
6
GND
Ground: Connect externally to Exposed Pad.
7
DRV
Open-Drain Output: Capable of sinking 150mA.
8
ERR
Error Flag Output: Open-drain output. Active low indicates an output
undervoltage condition on regulator 2.
9
VOUT2
Output of Regulator 2: 300mA output current
10
VOUT1
Output of Regulator 1: 150mA output current
EP
GND
Ground: Internally connected to the Exposed Pad. Connect externally
to pin 6.
1
VIN
EN1
EN2
BYP
SW
10 VOUT1
VOUT2
ERR
DRV
GND
9
8
7
6
2
3
4
5
10-Pin 3mm 3mm MLFTM (ML)
(Top View)
Pin Configuration
MIC2210
Micrel
MIC2210
4
November 2004
Electrical Characteristics
(Note 4)
V
IN
= V
OUT
+1.0V for higher output of the regulator pair; C
OUT
= 1.0F, I
OUT
= 100A; T
J
= 25C,
bold values indicate
40C T
J
+125C; 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
= 100A to 150mA (Regulator 1 and 2)
0.2
1.0
%
I
OUT
= 100A 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
= 0A
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
= 1.0F ceramic; C
BYP
= 10nF
60
dB
f = 20kHz; C
OUT
= 1.0F 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
=1F, C
BYP
=0.01F, 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
ERROR Flag Output (LDO 2)
V
ERR
Low Threshold, % of nominal V
OUT2
(Flag ON)
90
%
High Threshold, % of nominal V
OUT2
(Flag OFF)
96
%
V
OL
Flag Output Logic Low Voltage; I
L
= 100A
0.02
0.1
mV
I
ERR
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 ............................... 40C to +125C
Storage Temperature (T
S
) .......................... 65C to 150C
Open-Drain Output (DRV) ........................................ 250mA
Lead Temperature (soldering, 5 sec.) ........................ 260C
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
) ........................ 40C to +125C
Package Thermal Resistance
MLFTM-10 (
JA
) ....................................................60C/W
November 2004
5
MIC2210
MIC2210
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
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 allow-
able 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.
MIC2210
Micrel
MIC2210
6
November 2004
0
0.5
1
1.5
2
2.5
3
0
1
2
3
4
5
OUTPUT (V)
SUPPLY VOLTAGE (V)
Dropout C harac teris tic s
Output 1
150mA
100A
0
0.5
1
1.5
2
2.5
3
0
1
2
3
4
5
OUTPUT (V)
SUPPLY VOLTAGE (V)
Dropout C harac teris tic s
Output 2
300mA
100A
0
10
20
30
40
50
60
0
1
2
3
4
5
6
GROUND CURRENT
(
A)
SUPPLY VOLTAGE (V)
G round C urrent
vs . S upply V oltage
Output 1 and 2
with 100A load
0
10
20
30
40
50
60
0
20 40 60 80 100 120 140
GROUND CURRENT
(
A)
OUTPUT 1 LOAD CURRENT (mA)
G round C urrent
vs . Output 1 C urrent
0
10
20
30
40
50
60
0
50
100 150 200 250 300
GROUND CURRENT
(
A)
OUTPUT 2 LOAD CURRENT (mA)
G round C urrent
vs . Output 2 C urrent
10E-9
100E-9
1E-6
10E-6
SPECTRAL NOISE DENSITY (V/root Hz)
FREQUENCY (Hz)
S pec tral Nois e
Dens ity Output 1
C
OUT
= 1F
C
IN
= 1F
C
B Y P
= 0.01F
100A Load
10
100
1k
10k
100k
1M
10
100
1k
10k
100k
1M
10E-9
100E-9
1E-6
10E-6
SPECTRAL NOISE DENSITY (V/root Hz)
FREQUENCY (Hz)
S pec tral Nois e
Dens ity Output 2
100A Load
C
OUT
= 1F
C
IN
= 1F
C
B Y P
= 0.01F
0
20
40
60
80
0.01
0.1
1
10
100
1000
PSRR (dB)
FREQUENCY (kHz)
P S R R Output 2
C
B Y P
= 10nF
C
B Y P
= 100nF
C
B Y P
= 1nF
V
IN
= V
OUT
+ 1
I
OUT
= 300mA
C
OUT
= 1F
0
20
40
60
80
0.01
0.1
1
10
100
1000
PSRR (dB)
FREQUENCY (kHz)
P S R R Output 1
C
B Y P
= 10nF
C
B Y P
= 100nF
C
B Y P
= 1nF
V
IN
= V
OUT
+ 1
I
OUT
= 150mA
C
OUT
= 1F
0
50
100
150
-40 -20 0 20 40 60 80 100 120 140
DROPOUT VOLTAGE (mV)
TEMPERATURE (C)
Dropout V oltage
Output 1
150mA load
0
50
100
150
200
250
300
350
-40 -20 0 20 40 60 80 100 120 140
DROPOUT VOLTAGE (mV)
TEMPERATURE (C)
Dropout V oltage
Output 2
300mA load
0
10
20
30
40
50
60
-40
-20
0
20
40
60
80
100
120
140
160
GROUND PIN CURRENT
(
A)
TEMPERATURE (C)
G round P in C urrent
Load on both outputs
0A
100A
1mA
Typical Characteristics
November 2004
7
MIC2210
MIC2210
Micrel
0
5
10
15
20
25
30
35
0
50
100
150
GROUND CURRENT
(
A)
OUTPUT 1 LOAD CURRENT (mA)
G round C urrent
vs . Output C urrent
LDO1 Only
LDO2 Disabled (V
E N2
= LOW)
LDO1
0
5
10
15
20
25
30
35
0
50
100 150 200 250 300
GROUND CURRENT
(
A)
OUTPUT 2 LOAD CURRENT (mA)
G round C urrent
vs . Output C urrent
LDO2 Only
LDO1 Disabled (V
E N1
= LOW)
LDO2
0.00
0.20
0.40
0.60
0.80
1.00
1.20
2.25 2.75 3.25 3.75 4.25 4.75 5.25
SWITCH THRESHOLD (V)
SUPPLY VOLTAGE (V)
S witch T hres hold
vs . S upply V oltage
Drive C urrent = 1mA
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
2.25 2.75 3.25 3.75 4.25 4.75 5.25
ENABLE THRESHOLD (V)
SUPPLY VOLTAGE (V)
E nable V oltage T hres hold
vs . S upply V oltage
0
10
20
30
40
50
60
0
50
100
150
GROUND CURRENT
(
A)
OUTPUT 1 LOAD CURRENT (mA)
G round C urrent
vs . Output C urrent
B oth LDOs Active
LDO2 = 300mA
Output C urrent LDO1
V aried from 0 to F ull Load
B oth E nabled
0
10
20
30
40
50
60
0
50
100 150 200 250 300
GROUND CURRENT
(
A)
OUTPUT 2 LOAD CURRENT (mA)
G round C urrent
vs . Output C urrent
B oth LDOs Active
LDO1 = 150mA
Output C urrent LDO2
V aried from 0 to F ull Load
B oth E nabled
Typical Characteristics (cont.)
2.65
2.70
2.75
2.80
2.85
2.90
2.95
-40 -20 0 20 40 60 80 100 120 140
OUTPUT VOLTAGE (V)
TEMPERATURE (C)
Output V oltage 2
vs . Temperature
100A load
2.85
2.90
2.95
3.00
3.05
3.10
3.15
-40 -20 0 20 40 60 80 100 120 140
OUTPUT VOLTAGE (V)
TEMPERATURE (C)
Output V oltage 1
vs . Temperature
100A load
2.820
2.825
2.830
2.835
2.840
2.845
2.850
2.855
2.860
2.865
2.870
0
50
100 150 200 250 300
OUTPUT VOLTAGE (V)
OUTPUT 2 LOAD CURRENT (mA)
Output V oltage
vs . L oad C urrent
2.580
2.585
2.590
2.595
2.600
2.605
2.610
0
25
50
75
100 125 150
OUTPUT VOLTAGE (V)
OUTPUT 1 LOAD CURRENT (mA)
Output V oltage
vs . L oad C urrent
MIC2210
Micrel
MIC2210
8
November 2004
Enable Characteristics
Time (100s/div)
VEN (2V/div)
VOUT1 (2V/div)
VOUT2 (1V/div)
C
IN
= 1F
C
OUT
= 1F Ceramic
C
BYP
= 0.01F
V
IN
= 4.3V
Load Transient Response (LDO 1)
Time (4s/div)
IOUT1
(100mA/div)
VOUT1
(50mV/div)
VOUT2
(50mV/div)
C
IN
= 1F
C
OUT
= 1F
C
BYP
= 0.01F
V
IN
= V
OUT
+1V
150mA
100A
Load Transient Response (LDO 2)
Time (4s/div)
IOUT2
(200mA/div)
VOUT1
(100mV/div)
VOUT2
(100mV/div)
C
IN
= 1F
C
OUT
= 1F
C
BYP
= 0.01F
V
IN
= V
OUT
+1V
300mA
100A
November 2004
9
MIC2210
MIC2210
Micrel
Functional Diagram
OUT1
OUT2
ERR
DRV
NGND
GND
SW
CBYP
EN2
EN1
VIN
LDO1
LDO2
Reference
Error
Comparator
MIC2210 Fixed Voltage Block Diagram
OUT1
ADJ1
OUT2
ADJ2
ERR
DRV
NGND
GND
SW
CBYP
EN2
EN1
VIN
LDO1
LDO2
Reference
Error
Comparator
MIC2210 Adjustable Voltage Block Diagram
Functional Description
The MIC2210 is a high performance, low quiescent current
power management IC consisting of two Cap low dropout
regulators, an open-drain driver. The first regulator is capable
of sourcing 150mA at output voltages from 1.25V to 5V. The
second regulator is capable of sourcing 300mA of current at
output voltages from 1.25V to 5V. An open-drain driver com-
pletes the power management chipset, offering the capability
of driving LEDs for keypad backlighting in applications such
as cellphones.
Enable 1 and 2
The enable inputs allow for logic control of both output volt-
ages with individual enable inputs. The enable input is active
high, requiring 1.8V for guaranteed operation. The enable
input is CMOS logic and cannot by left floating.
Open-Drain Driver (DRV)
The drive (DRV) pin is an open-drain output capable of sinking
150mA of current. This output is controlled by a logic level
input, the switch (SW) pin. The switch pin is an active high
input and cannot be left floating.
Input Capacitor
Good bypassing is recommended from input to ground to
help improve AC performance. A 1F capacitor or greater
located close to the IC is recommended.
MIC2210
Micrel
MIC2210
10
November 2004
Bypass Capacitor
The internal reference voltage of the MIC2210 can be by-
passed with a capacitor to ground to reduce output noise and
increase power supply rejection (PSRR). A quick-start feature
allows for quick turn-on of the output voltage regardless of
the size of the capacitor. The recommended nominal bypass
capacitor is 0.01F, but it can be increased without limit.
Output Capacitor
Each regulator output requires a 1F ceramic output capaci-
tor for stability. The output capacitor value can be increased
to improve transient response, but performance has been
optimized for a 1F ceramic type output capacitor.
X7R/X5R dielectric-type ceramic capacitors are recom-
mended 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 operat-
ing temperature ranges. To use a ceramic chip capacitor with
Y5V dielectric, the value must be much higher than a X7R
ceramic capacitor to ensure the same minimum capacitance
over the equivalent operating temperature range.
November 2004
11
MIC2210
MIC2210
Micrel
Package Information
10-Lead MLFTM (ML)
MIC2210
Micrel
MIC2210
12
November 2004
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
This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
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.
2004 Micrel Incorporated
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