MICREL MIC2210

MIC2210
Micrel
MIC2210
Dual µCap LDO with Open-Drain Driver
REV. 11/04
General Description
Features
The MIC2210 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 MIC2210 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 MIC2210 can
be put into a zero-off-mode current state, drawing no current
when disabled.
The MIC2210 is a µCap 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 MLF™ leadless package and is also
available with adjustable output voltages in the 4mm × 4mm
16-pin MLF™ package.
• 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 48µA
• High output accuracy:
• +1.0% initial accuracy
• +2.0% over temperature
• Thermal shutdown protection
• Current limit protection
• Tiny 10-pin 3mm × 3mm MLF™ package
Applications
• Cellular/PCS phones
• Wireless modems
• PDAs
* For each output.
Typical Application
LED x10
Keyboard
Backlight
MIC2210-xxBML
CBYP
VIN
VOUT1
Audio Amp
EN1
VOUT2
Baseband IC
EN2
ERR
CBYP
DRV
1 F
1 F
SW
GND
MIC2210 Typical Cellphone Application
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
November 2004
1
MIC2210
MIC2210
Micrel
Ordering Information
Full Part NUmber
Manufacturing
Part Number
MIC2210-3.0/3.3BML
Pb-FREE
Voltage*
(Vo1/Vo2)
Junction Temp. Range
Package
MIC2210-PSBML
3.0V/3.3V
-40°C to +125°C
10-Pin 3x3 MLFTM
MIC2210-1.8/3.3BML
MIC2210-GSBML
1.8V/3.3V
-40°C to +125°C
10-Pin 3x3 MLFTM
MIC2210-2.8/1.6YML
MIC2210-MWYML
X
2.8V/1.6V
-40°C to +125°C
10-Pin 3x3 MLFTM
MIC2210-3.0/3.3YML
MIC2210-PSYML
X
3.0V/3.3V
-40°C to +125°C
10-Pin 3x3 MLFTM
MIC2210-3.3/3.3YML
MIC2210-SSYML
X
3.3V/3.3V
-40°C to +125°C
10-Pin 3x3 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
MIC2210
2
November 2004
MIC2210
Micrel
Pin Configuration
VIN 1
10 VOUT1
EN1 2
9 VOUT2
EN2 3
8 ERR
BYP 4
7 DRV
SW 5
6 GND
10-Pin 3mm × 3mm MLF™ (ML)
(Top View)
Pin Description
Pin Number
MLF-10 (3x3)
Pin Name
Pin Function
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 0.01µF to GND to reduce output
noise. May be left open.
5
SW
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.
Active high signal drives open-drain N-channel MOSFET.
9
VOUT2
Output of Regulator 2: 300mA output current
10
VOUT1
Output of Regulator 1: 150mA output current
EP
GND
November 2004
Ground: Internally connected to the Exposed Pad. Connect externally
to pin 6.
3
MIC2210
MIC2210
Micrel
Absolute Maximum Rating (Note 1)
Operating Ratings (Note 2)
Supply Input Voltage (VIN) ......................................0V to 7V
Enable Input Voltage (VEN) ....................................0V to 7V
Power Dissipation (PD) ................ Internally Limited, Note 3
Junction Temperature ............................... –40°C to +125°C
Storage Temperature (TS) .......................... –65°C to 150°C
Open-Drain Output (DRV) ........................................ 250mA
Lead Temperature (soldering, 5 sec.) ........................ 260°C
Supply Input Voltage (VIN) ..............................2.25V to 5.5V
Enable Input Voltage (VEN) ................................... 0V to Vin
Junction Temperature (TJ) ........................ –40°C to +125°C
Package Thermal Resistance
MLF™-10 (θJA) .................................................... 60°C/W
Electrical Characteristics (Note 4)
VIN = VOUT +1.0V for higher output of the regulator pair; COUT = 1.0µF, IOUT = 100µA; TJ = 25°C, bold values indicate
–40°C ≤ TJ ≤ +125°C; unless noted.
Parameter
Conditions
Min
Output Voltage Accuracy
Variation from nominal VOUT
–1.0
–2.0
Output Voltage Temp.
Coefficient
VIN = VOUT +1V to 5.5V
Load Regulation
IOUT = 100µA to 150mA (Regulator 1 and 2)
Ground Pin Current
Ground Pin Current
in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Enable Input
Enable Input Voltage
Enable Input Current
ERROR Flag Output (LDO 2)
VERR
VOL
IERR
MIC2210
Max
Units
+1.0
+2.0
%
%
40
Line Regulation; Note 5
Dropout Voltage; Note 6
Typ
–0.3
–0.6
IOUT = 100µA to 300mA (Regulator 2)
ppm/C
0.02
0.3
0.6
%/V
0.2
1.0
%
1.5
%
IOUT = 150mA (Regulator 1 and 2)
120
190
250
mV
mV
IOUT = 300mA (Regulator 2)
240
340
420
mV
IOUT1 = IOUT2 = 0µA
48
65
80
µA
µA
IOUT1 = 150mA & IOUT2 = 300mA
60
µA
2.0
VEN ≤ 0.4V
f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF
f = 20kHz; COUT = 1.0µF ceramic; CBYP = 10nF
VOUT = 0V (Regulator 1)
VOUT = 0V (Regulator 2)
60
40
dB
150
280
460
300
450
700
COUT =1µF, CBYP =0.01µF, 10Hz to 100kHz
30
Logic Low (Regulator Shutdown)
µA
dB
mA
mA
µVrms
0.6
V
Logic High (Regulator Enabled)
1.8
VIL < 0.6V (Regulator Shutdown)
–1
0.01
+1
µA
VIH > 1.8V (Regulator Enabled)
–1
0.01
+1
µA
Low Threshold, % of nominal VOUT2 (Flag ON)
90
High Threshold, % of nominal VOUT2 (Flag OFF)
Flag Output Logic Low Voltage; IL = 100µA
Flag Leakage Current, Flag OFF
4
–1
V
%
96
%
0.02
0.1
mV
0.01
+1
µA
November 2004
MIC2210
Parameter
Micrel
Conditions
Min
Typ
Max
Units
0.2
0.5
0.6
V
0.01
+1
µA
0.6
V
DRV Output
Voltage Low
IDRV = 150mA
Leakage Current
IDRV = 0mA, VDRV = 5.5V, SW = 0V
–1
Logic High (DRV Enabled)
1.8
VIL < 0.6V (DRV Shutdown)
–1
0.01
+1
µA
–1
0.01
+1
µA
SW Input Voltage
SW Input Current
Logic Low (DRV Shutdown)
VIH > 1.8V (DRV Enabled)
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 TA (ambient temperature) is (PD(max) = TJ(max) – TA) / θJA. 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 VOUT + 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.
November 2004
5
MIC2210
MIC2210
Micrel
Typical Characteristics
P S R R Output 2
80
C B Y P = 10nF
40
20
V IN = V OUT + 1
I OUT = 150mA
C OUT = 1µF
0.1
1
10
100
FREQUENCY (kHz)
0
0.01
1000
10E-9
10
10k 100k
1k
100
FREQUENCY (Hz)
2.5
2.5
Dropout V oltage
Output 1
100
50
2
1
1M
0 20 40 60 80 100 120 140
OUTPUT 1 LOAD CURRENT (mA)
100µA
300mA
1.5
1
0
5
60
50
300mA load
100
50
0
1
2
3
4
SUPPLY VOLTAGE (V)
G round C urrent
vs . Output 2 C urrent
Output 1 and 2
with 100µA load
40
30
20
10
0
0
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
60
0
1
2
3
4
SUPPLY VOLTAGE (V)
40
30
20
10
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
6
0µA
100 µA
30
20
10
0
0
6
1mA
50
40
5
G round P in C urrent
60
50
5
G round C urrent
vs . S uppl y V oltage
Dropout V oltage
Output 2
150
GROUND CURRENT (µA)
10
1
2
3
4
SUPPLY VOLTAGE (V)
200
50
20
0
250
60
2
0.5
300
G round C urrent
vs . Output 1 C urrent
30
150mA
350
0
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
40
100µA
1.5
0
1M
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
1k
100
10k 100k
FREQUENCY (Hz)
10
Dropout C harac teris tic s
Output 2
3
0.5
C B Y P = 0.01µF
150mA load
GROUND CURRENT (µA)
C B Y P = 0.01µF
Load on both outputs
-40
-20
0
20
40
60
80
100
120
140
160
C OUT = 1µF
C = 1µF
IN
MIC2210
10E-9
3
OUTPUT (V)
OUTPUT (V)
SPECTRAL NOISE DENSITY (V/root Hz)
100E-9
0
1000
C OUT = 1µF
C IN = 1µF
100µA Load
1E-6
150
0.1
1
10
100
FREQUENCY (kHz)
100E-9
Dropout C harac teris tic s
Output 1
S pec tral Nois e
Dens ity Output 2
10E-6
V IN = V OUT + 1
I OUT = 300mA
C OUT = 1µF
100 µA Load
1E-6
GROUND CURRENT (µA)
0
0.01
C B Y P = 1nF
40
GROUND PIN CURRENT (µA)
20
C B Y P = 1nF
10E-6
C B Y P = 10nF
60
PSRR (dB)
PSRR (dB)
60
S pec tral Nois e
Dens ity Output 1
C B Y P = 100nF
C B Y P = 100nF
SPECTRAL NOISE DENSITY (V/root Hz)
P S R R Output 1
80
TEMPERATURE (°C)
November 2004
MIC2210
Micrel
Typical Characteristics (cont.)
G round C urrent
vs . Output C urrent
35
15
10
LDO1 Only
LDO2 Dis abled (V E N2 = LOW )
5
20
15
10
G round C urrent
vs . Output C urrent
30
20
B oth LDOs Active
LDO1 = 150mA
Output C urrent LDO2
V aried from 0 to F ull Load
10
0
2.85
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
2.600
2.595
2.590
2.585
2.90
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.90
100
150
0
50
OUTPUT 1 LOAD CURRENT (mA)
Output V oltage
vs . L oad C urrent
0
25 50 75 100 125 150
OUTPUT 1 LOAD CURRENT (mA)
2.870
2.865
2.860
2.855
2.850
2.845
2.840
2.835
2.830
2.825
2.820
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
S witc h T hres hold
vs . S uppl y V oltage
2.95
100µA load
2.95
0
Output V oltage 2
vs . T emperature
3.15
3.00
B oth LDOs Active
LDO2 = 300mA
Output C urrent LDO1
V aried from 0 to F ull Load
10
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
2.580
Output V oltage 1
vs . T emperature
3.05
20
2.605
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
3.10
30
2.610
OUTPUT VOLTAGE (V)
GROUND CURRENT (µA)
40
B oth E nabled
40
Output V oltage
vs . L oad C urrent
50
B oth E nabled
LDO2 Only
LDO1 Dis abled (V E N1 = LOW )
5
0
100
150
0
50
OUTPUT 1 LOAD CURRENT (mA)
60
LDO2
GROUND CURRENT (µA)
20
50
25
OUTPUT VOLTAGE (V)
LDO1
1.20
100µA load
Drive C urrent = 1mA
1.00
SWITCH THRESHOLD (V)
25
G round C urrent
vs . Output C urrent
60
30
GROUND CURRENT (µA)
GROUND CURRENT (µA)
30
0
G round C urrent
vs . Output C urrent
35
2.85
2.80
2.75
2.70
2.65
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
0.80
0.60
0.40
0.20
0.00
2.25 2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
E nable V oltage T hres hold
vs . S uppl y V oltage
1.60
ENABLE THRESHOLD (V)
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
2.25 2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
November 2004
7
MIC2210
MIC2210
Micrel
Load Transient Response (LDO 1)
VOUT1
IOUT1
(50mV/div) (100mA/div)
150mA
CIN = 1µF
COUT = 1µF Ceramic
CBYP = 0.01µF
VIN = 4.3V
100A
CIN = 1µF
COUT = 1µF
CBYP = 0.01µF
VIN = VOUT +1V
VOUT2
(50mV/div)
VEN
(2V/div)
VOUT2
(1V/div)
VOUT1
(2V/div)
Enable Characteristics
Time (100s/div)
Time (4s/div)
VOUT1
(100mV/div)
VOUT2
IOUT2
(100mV/div) (200mA/div)
Load Transient Response (LDO 2)
300mA
100A
CIN = 1µF
COUT = 1µF
CBYP = 0.01µF
VIN = VOUT +1V
Time (4s/div)
MIC2210
8
November 2004
MIC2210
Micrel
Functional Diagram
VIN
OUT1
LDO1
EN1
OUT2
LDO2
EN2
CBYP
Error
Comparator
ERR
DRV
Reference
SW
GND
NGND
MIC2210 Fixed Voltage Block Diagram
VIN
OUT1
LDO1
EN1
ADJ1
OUT2
LDO2
ADJ2
EN2
Error
Comparator
CBYP
ERR
DRV
Reference
SW
GND
NGND
MIC2210 Adjustable Voltage Block Diagram
Functional Description
The MIC2210 is a high performance, low quiescent current
power management IC consisting of two µCap 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 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 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.
November 2004
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 1µF capacitor or greater
located close to the IC is recommended.
9
MIC2210
MIC2210
Micrel
Bypass Capacitor
The internal reference voltage of the MIC2210 can be bypassed 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 0.01µF, but it can be increased without limit.
MIC2210
Output Capacitor
Each regulator output requires a 1µF ceramic output capacitor for stability. The output capacitor value can be increased
to improve transient response, but performance has been
optimized for a 1µF ceramic type output capacitor.
X7R/X5R dielectric-type ceramic capacitors are recommended 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 operating 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.
10
November 2004
MIC2210
Micrel
Package Information
10-Lead MLF™ (ML)
November 2004
11
MIC2210
MIC2210
Micrel
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
MIC2210
12
November 2004