Micrel MIC2219-PSBML Dynamically adjustable dual ucap ldo Datasheet

MIC2219
Micrel, Inc.
MIC2219
Dynamically Adjustable Dual µCap LDO
General Description
Features
The MIC2219 is a dual µCap low dropout regulator. The first
regulator is capable of sourcing 150mA, while the second
regulator can source up to 300mA.
Ideal for battery operated applications, the MIC2219 offers
1% accuracy, extremely low dropout voltage (80mV @
100mA), and extremely low ground current, only 48µA total.
Equipped with TTL logic compatible enable pins, the MIC2219
can be put into a zero-off-mode current state, drawing no
current when disabled. Separate enable pins allow individual
control of each output voltage.
The additional feature incorporated in the MIC2219 is bringing out the feedback nodes to two external pins, allowing for
dynamic adjustment of the LDO output voltages.
The MIC2219 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2219 is available in fixed output voltages in the
10-pin 3mm × 3mm MLF™ leadless 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
• Feedback pins externally accessible
• Low dropout voltage of 80mV @ 100mA
• Ultra-low quiescent current of 48µA total (24µA/LDO)
• 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 phones
Wireless modems
PDAs
LEDs
Typical Application
MIC2219-xxBML
OFF ON
OFF ON
0.01µF
VIN
VOUT1
EN1
VOUT2
EN2
FB1
CBYP
FB2
LEDs ×10
1µF
Ceramic
1µF
Vibrator
Motor
GND
MIC2219 Typical Cell Phone 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
April 2005
1
M9999-042105
MIC2219
Micrel, Inc.
Ordering Information
Part Number
Full Part Number
MIC2219-3.0/3.3BML
Voltage*
Junction
Standard
Pb-Free
(Vo1/Vo2)
Temp. Range
Package
MIC2219-PSBML
MIC2219-PSYML
3.0V/3.3V
–40°C to +125°C
10-Pin 3×3 MLF™
*For other output voltage options, contact Micrel marketing.
Pin Configuration
VIN 1
10 VOUT1
EN1 2
9 VOUT2
EN2 3
8 NC
CBYP 4
FB1 5
Voltage
Adj.
1.5
1.6
1.8
1.85
1.9
2.0
7 FB2
6 GND
10-Pin 3mm × 3mm MLF™ (ML)
(Top View)
M9999-042105
Code
A
F
W
G
D
Y
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
2
April 2005
MIC2219
Micrel, Inc.
Pin Description
Pin Number
Pin Name
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
5
FB1
Feedback Node (OUT1). Connected to internal feedback resistor divider
network.
6
GND
Ground: Connect externally to Exposed Pad.
7
FB2
Feedback Node (OUT2). Connected to internal feedback resistor divider
network.
8
N/C
No Connection.
9
VOUT2
Output of Regulator 2: 300mA output current.
10
VOUT1
Output of Regulator 1: 150mA output current.
EP
GND
April 2005
Pin Function
Reference Bypass: Connect external 0.01µF to GND to reduce output noise.
May be left open.
Ground: Internally connected to the Exposed Pad. Connect externally to pin 6.
3
M9999-042105
MIC2219
Micrel, Inc.
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
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
MLF™-10 (θJC) 1" square 2 oz. copper ................ 2°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
Typ
VIN = VOUT +1V to 5.5V
Load Regulation
IOUT = 100µA to 150mA (regulator 1 and 2)
–0.3
–0.6
+1.0
+2.0
%
%
ppm/C
0.02
0.3
0.6
%/V
0.2
1.0
%
1.5
%
IOUT = 100µA to 300mA (regulator 2)
Ground Pin Current
Units
40
Line Regulation; Note 5
Dropout Voltage; Note 6
Max
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
Ground Pin Current in Shutdown
VEN ≤ 0.4V
Ripple Rejection
f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF
60
dB
f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF
40
dB
Current Limit
Output Voltage Noise
1.0
µA
VOUT = 0V (regulator 1)
150
280
460
mA
VOUT = 0V (regulator 2)
300
450
700
mA
COUT =1µF, CBYP =0.01µF, 10Hz to 100kHz
30
µVrms
Resistance value, output1, VOUT to FB1
830
kΩ
Resistance value, output1, FB1 to GND
580
kΩ
Resistance value, output2, VOUT to FB2
972
kΩ
Resistance value, output2, FB2 to GND
580
kΩ
Feedback Inputs
FB1
FB2
Enable Input
Enable Input Voltage
Enable Input Current
Logic low (regulator shutdown)
0.6
Logic high (regulator enabled)
1.8
V
VIL < 0.6V (regulator shutdown)
–1
0.01
+1
µA
VIH > 1.8V (regulator enabled)
–1
0.01
+1
µA
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.
M9999-042105
V
4
April 2005
MIC2219
Note 6.
Micrel, Inc.
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.
April 2005
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M9999-042105
MIC2219
Micrel, Inc.
PSRR Output 1
80
PSRR Output 2
80
CBYP = 100nF
CBYP = 100nF
CBYP = 10nF
40
20
CBYP = 1nF
VIN = VOUT + 1
IOUT = 300mA
COUT = 1µF
0
0.01
10k 100k 1M
100
1k
FREQUENCY (Hz)
1k
10k 100k
0.1
FREQUENCY (Hz)
1M
Spectral Noise
Density Output 1
10E-6
100µA Load
1E-6
100E-9
COUT = 1µF
C = 1µF
IN
CBYP = 0.01µF
10E-9
10
Dropout Characteristics
Output 1
Spectral Noise
Density Output 2
10E-6
1k
100
10k 100k
FREQUENCY (Hz)
1M
Dropout Characteristics
Output 2
3.5
3.5
3.0 Load = 100µA
3.0 Load = 100µA
100E-9
COUT = 1µF
C = 1µF
IN
CBYP = 0.01µF
10E-9
10
100
50
0.5
1
2
3
4
5
INPUT VOLTAGE (V)
300
300mA Load
250
200
150
100
50
0
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
0
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
Ground Current
vs. Output 1 Current
Ground Current
vs. Output 2 Current
40
30
20
10
0
0 20 40 60 80 100 120 140
OUTPUT 1 LOAD CURRENT (mA)
M9999-042105
1.5
1.0
0.5
60
50
40
30
20
10
0
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
6
1
2
3
4
5
INPUT VOLTAGE (V)
6
Output 1 and 2
with 100µA Load
40
30
20
10
0
0
1
2
3
4
5
SUPPLY VOLTAGE (V)
6
Ground Pin Current
60
50
Load = 300mA
2.0
Ground Current
vs. Supply Voltage
60
GROUND CURRENT (µA)
50
2.5
0
0
6
350
60
GROUND CURRENT (µA)
1.0
Dropout Voltage
Output 2
Dropout Voltage
Output 1
150mA Load
1.5
0
0
1M
Load = 150mA
2.0
GROUND PIN CURRENT (µA)
DROPOUT VOLTAGE (mV)
150
100
1k
10k 100k
FREQUENCY (Hz)
2.5
GROUND CURRENT (µA)
1E-6
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
100µA Load
DROPOUT VOLTAGE (mV)
SPECTRAL NOISE DENSITY (V/root Hz)
CBYP = 1nF
40
20
VIN = VOUT + 1
IOUT = 150mA
COUT = 1µF
0
10
CBYP = 10nF
60
PSRR (dB)
PSRR (dB)
60
SPECTRAL NOISE DENSITY (V/root Hz)
Typical Characteristics
1mA
50
100µA
40 0µA
30
20
10
Load on both outputs
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
April 2005
MIC2219
Micrel, Inc.
Typical Characteristics (cont.)
30
LDO1
20
15
10
2.94
2.92
2.90
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
April 2005
Output Voltage
vs. Load Current
OUTPUT VOLTAGE (V)
3.303
3.001
3.000
2.999
2.998
2.997
2.996
2.995
3.302
3.301
3.300
3.299
3.298
3.297
3.296
0
25 50 75 100 125 150
OUTPUT 1 LOAD CURRENT (mA)
3.295
Output Voltage 2
vs. Temperature
Enable Voltage Threshold
vs. Supply Voltage
3.32
3.30
3.28
3.26
3.24
3.22
3.20
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
1.60
3.40
3.38 100µA load
3.36
3.34
-60
-40
2.98
2.96
Both LDOs Active
LDO2 = 300mA
Output Current LDO1
Varied from 0 to Full Load
10
3.002
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.02
3.00
20
3.304
Output Voltage 1
vs. Temperature
3.10
3.08 100µA load
3.06
3.04
30
0
0
50
100
150
OUTPUT 1 LOAD CURRENT (mA)
ENABLE THRESHOLD (V)
0
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
Both Enabled
40
3.003
TEMPERATURE (°C)
7
120
140
10
Both LDOs Active
LDO1 = 150mA
Output Current LDO2
Varied from 0 to Full Load
5
LDO2 Only
LDO1 Disabled (VEN1 = LOW)
100
20
10
60
80
30
OUTPUT VOLTAGE (V)
GROUND CURRENT (µA)
Both Enabled
40
15
50
Output Voltage
vs. Load Current
Ground Current
vs. Output Current
50
20
0
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
0
0
50
100
150
OUTPUT 1 LOAD CURRENT (mA)
60
LDO2
20
40
5
LDO1 Only
LDO2 Disabled (VEN2 = LOW)
25
Ground Current
vs. Output Current
60
30
-20
0
25
Ground Current
vs. Output Current
35
GROUND CURRENT (µA)
Ground Current
vs. Output Current
GROUND CURRENT (µA)
GROUND CURRENT (µA)
35
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
3.25
3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
M9999-042105
MIC2219
Micrel, Inc.
Functional Characteristics
Load Transient Response (LDO 1)
Enable Characteristics
CIN = 1µF
COUT = 1µF
CBYP = 10nF
VIN = 4.2V
100µA
CIN = 1µF
COUT = 1µF
CBYP = 0.01µF
VIN = VOUT+1V
VOUT2
(50mV/div)
OUTPUTT1
(1V/div)
ENABLE1
(1V/div)
VOUT1
IOUT1
(50mV/div) (100mA/div)
150mA
Time (4µs/div)
Time (100µs/div)
Load Transient Response (LDO 2)
VOUT1
(100mV/div)
VOUT2
IOUT2
(100mV/div) (200mA/div)
300mA
100µA
CIN = 1µF
COUT = 1µF
CBYP = 0.01µF
VIN = VOUT+1V
Time (4µs/div)
M9999-042105
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April 2005
MIC2219
Micrel, Inc.
Functional Diagram
OUT1
VIN
LDO1
EN1
FB1
LDO2
OUT2
EN2
CBYP
FB2
Reference
GND
MIC2219 Fixed Voltage Block Diagram
Functional Description
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.
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. X7Rtype 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 an
X7R ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range.
The MIC2219 is a high performance, low quiescent current
power management IC consisting of two µCap low-dropout
regulators. 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.
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.
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.
Bypass Capacitor
The internal reference voltage of the MIC2219 can be bypassed with a capacitor to ground to reduce output noise and
April 2005
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M9999-042105
MIC2219
Micrel, Inc.
Package Information
DIMENSIONS: mm
0.85 +0.15
–0.05
1.60 +0.15
–0.15
3.00 BSC.
0.80 +0.15
–0.15
1.50 BSC.
0.01 +0.04
–0.01
0.48 typ.
PIN 1 ID
0.23 +0.07
–0.05
1
1
1.50 BSC.
2
2
5.0
3.00 BSC.
3
1.15 +0.15
–0.15
2.30 +0.15
–0.15
3
0.20 dia
0.50 BSC.
0.40 +0.15
–0.05
TOP
SEATING PLANE
TERMINAL TIP
BOTTOM
0.23 +0.07
–0.05
0.50 BSC.
0.01 +0.04
–0.01
0.50 BSC.
TERMINAL TIP
ODD TERMINAL SIDE
EVEN TERMINAL SIDE
10-Lead MLF™ (ML)
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.
© 2003 Micrel, Incorporated.
M9999-042105
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April 2005
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