July 2003
1
MIC2210
MIC2210
Micrel
MIC2210
Dual
Cap LDO with Open-Drain Driver
General Description
The MIC2210 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 MIC2210 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 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
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 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 48
A
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. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
Micro
LeadFrameTM and MLFTM are trademarks of Amkor Technology.
Micro
LeadFrame and MLF are trademarks of Amkor Technology, Inc.
MIC2210
Micrel
MIC2210
2
July 2003
Ordering Information
Full Part Number
Manufacturing
Voltage*
Junction Temp. Range
Package
Part Number
(Vo1/Vo2)
MIC2210-3.0/3.3BML
MIC2210-PSBML
3.0V/3.3V
40
C to +125
C
10-Pin 3
3 MLFTM
MIC2210-1.8/3.3BML
MIC2210-GSBML
1.8V/3.3V
40
C to +125
C
10-Pin 3
3 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
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 0.01
F 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
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
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
= 100
A
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 .............................. 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
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
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.
MIC2210
Micrel
MIC2210
6
July 2003
0
0.5
1
1.5
2
2.5
3
0
1
2
3
4
5
OUTPUT (V)
SUPPLY VOLTAGE (V)
Dropout Characteristics
Output 1
150mA
100
A
0
0.5
1
1.5
2
2.5
3
0
1
2
3
4
5
OUTPUT (V)
SUPPLY VOLTAGE (V)
Dropout Characteristics
Output 2
300mA
100
A
0
10
20
30
40
50
60
0
1
2
3
4
5
6
GROUND CURRENT (
A)
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage
Output 1 and 2
with 100
A load
0
10
20
30
40
50
60
0
20 40 60 80 100 120 140
GROUND CURRENT (
A)
OUTPUT 1 LOAD CURRENT (mA)
Ground Current
vs. Output 1 Current
0
10
20
30
40
50
60
0
50
100 150 200 250 300
GROUND CURRENT (
A)
OUTPUT 2 LOAD CURRENT (mA)
Ground Current
vs. Output 2 Current
10E-9
100E-9
1E-6
10E-6
SPECTRAL NOISE DENSITY (V/root Hz)
FREQUENCY (Hz)
Spectral Noise
Density Output 1
C
OUT
= 1
F
C
IN
= 1
F
C
BYP
= 0.01
F
100
A 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)
Spectral Noise
Density Output 2
100
A Load
C
OUT
= 1
F
C
IN
= 1
F
C
BYP
= 0.01
F
0
20
40
60
80
0.01
0.1
1
10
100
1000
PSRR (dB)
FREQUENCY (kHz)
PSRR Output 2
C
BYP
= 10nF
C
BYP
= 100nF
C
BYP
= 1nF
V
IN
= V
OUT
+ 1
I
OUT
= 300mA
C
OUT
= 1
F
0
20
40
60
80
0.01
0.1
1
10
100
1000
PSRR (dB)
FREQUENCY (kHz)
PSRR Output 1
C
BYP
= 10nF
C
BYP
= 100nF
C
BYP
= 1nF
V
IN
= V
OUT
+ 1
I
OUT
= 150mA
C
OUT
= 1
F
0
50
100
150
-40 -20 0 20 40 60 80 100120140
DROPOUT VOLTAGE (mV)
TEMPERATURE (
C)
Dropout Voltage
Output 1
150mA load
0
50
100
150
200
250
300
350
-40 -20 0 20 40 60 80 100120140
DROPOUT VOLTAGE (mV)
TEMPERATURE (
C)
Dropout Voltage
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)
Ground Pin Current
Load on both outputs
0
A
100
A
1mA
Typical Characteristics
July 2003
7
MIC2210
MIC2210
Micrel
0
5
10
15
20
25
30
35
0
50
100
150
GROUND CURRENT (
A)
OUTPUT 1 LOAD CURRENT (mA)
Ground Current
vs. Output Current
LDO1 Only
LDO2 Disabled (V
EN2
= 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)
Ground Current
vs. Output Current
LDO2 Only
LDO1 Disabled (V
EN1
= 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)
Switch Threshold
vs. Supply Voltage
Drive Current = 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)
Enable Voltage Threshold
vs. Supply Voltage
0
10
20
30
40
50
60
0
50
100
150
GROUND CURRENT (
A)
OUTPUT 1 LOAD CURRENT (mA)
Ground Current
vs. Output Current
Both LDOs Active
LDO2 = 300mA
Output Current LDO1
Varied from 0 to Full Load
Both Enabled
0
10
20
30
40
50
60
0
50
100 150 200 250 300
GROUND CURRENT (
A)
OUTPUT 2 LOAD CURRENT (mA)
Ground Current
vs. Output Current
Both LDOs Active
LDO1 = 150mA
Output Current LDO2
Varied from 0 to Full Load
Both Enabled
Typical Characteristics (cont.)
2.65
2.70
2.75
2.80
2.85
2.90
2.95
-40 -20 0 20 40 60 80 100120140
OUTPUT VOLTAGE (V)
TEMPERATURE (
C)
Output Voltage 2
vs. Temperature
100
A load
2.85
2.90
2.95
3.00
3.05
3.10
3.15
-40 -20 0 20 40 60 80 100120140
OUTPUT VOLTAGE (V)
TEMPERATURE (
C)
Output Voltage 1
vs. Temperature
100
A 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 Voltage
vs. Load Current
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 Voltage
vs. Load Current
MIC2210
Micrel
MIC2210
8
July 2003
Enable Characteristics
Time (100
s/div)
VEN
(2V/div)
V
OUT1
(2V/div)
V
OUT2
(1V/div)
C
IN
= 1
F
C
OUT
= 1
F Ceramic
C
BYP
= 0.01
F
V
IN
= 4.3V
Load Transient Response (LDO 1)
Time (4
s/div)
IOUT1
(100mA/div)
V
OUT1
(50mV/div)
V
OUT2
(50mV/div)
C
IN
= 1
F
C
OUT
= 1
F
C
BYP
= 0.01
F
V
IN
= V
OUT
+1V
150mA
100
A
Load Transient Response (LDO 2)
Time (4
s/div)
IOUT2
(200mA/div)
V
OUT1
(100mV/div)
V
OUT2
(100mV/div)
C
IN
= 1
F
C
OUT
= 1
F
C
BYP
= 0.01
F
V
IN
= V
OUT
+1V
300mA
100
A
July 2003
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
completes the power management chipset, offering the ca-
pability of driving LEDs for keypad backlighting in applica-
tions such as cellphones.
Enable 1 and 2
The enable inputs allow for logic control of both output
voltages 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 1
F capacitor or greater
located close to the IC is recommended.
MIC2210
Micrel
MIC2210
10
July 2003
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 fea-
ture allows for quick turn-on of the output voltage regardless
of the size of the capacitor. The recommended nominal
bypass capacitor is 0.01
F, but it can be increased without
limit.
Output Capacitor
Each regulator output requires a 1
F ceramic output capaci-
tor for stability. The output capacitor value can be increased
to improve transient response, but performance has been
optimized for a 1
F 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 oper-
ating 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
operating temperature ranges. To use a ceramic chip capaci-
tor with Y5V dielectric, the value must be much higher than a
X7R ceramic capacitor to ensure the same minimum capaci-
tance over the equivalent operating temperature range.
July 2003
11
MIC2210
MIC2210
Micrel
Package Information
0.20 dia
0.48 typ.
3.00 BSC.
1.50 BSC.
PIN 1 ID
0.85
3.00 BSC.
TOP
BOTTOM
ODD TERMINAL SIDE
EVEN TERMINAL SIDE
TERMINAL TIP
TERMINAL TIP
1.50 BSC.
1
2
3
1
2
3
--0.05
+0.15
0.01
0.50 BSC.
0.50 BSC.
0.50 BSC.
--0.01
+0.04
0.23
--0.05
+0.07
0.23
--0.05
+0.07
0.01
--0.01
+0.04
0.40
--0.05
+0.15
1.60
--0.15
+0.15
0.80
--0.15
+0.15
2.30
--0.15
+0.15
1.15
--0.15
+0.15
SEATING PLANE
10-Lead MLFTM (ML)
BOTTOM VIEW
TOP VIEW
0.50
0.30
0.60
0.24
2.45
2.15
0.70
--
0.90
--
0.00
0.05
0.20 REF
2.45
2.15
0.30
0.18
0.65 BSC.
PIN 1 ID
0.20 R.
3.75 BSC 4.00 BSC
SEATING PLANE
12
3.75 BSC
1
2
3
4.00 BSC
16-Lead MLFTM (ML)
MIC2210
Micrel
MIC2210
12
July 2003
MICREL, INC.
1849 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
http://www.micrel.com
The information furnished by Micrel in this datasheet 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 at Purchaser's own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
2003 Micrel, Incorporated.
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