MIC2215
Micrel
MIC2215
Triple High PSRR, Low Noise
µ
Cap LDO
General Description
The MIC2215 is a high performance, triple LDO voltage
regulator, with each regulator capable of providing 250mA
continuous output current.
Ideal for battery operated applications, the MIC2215 offers
1% initial accuracy, extremely low dropout voltage (100mV@
150mA), and low ground current at light load (typically 110µA
per regulator). Equipped with a noise bypass pin and featur-
ing very high power supply ripple rejection (PSRR) of up to
80dB, the MIC2215 provides the lowest noise and highest
efficiency solution for RF applications in portable electronics
such as cellular phones and wireless LAN applications.
Equipped with TTL logic-compatible enable pins, each of the
regulators in the MIC2215 can be put into a zero current off
mode where the supply current is much less than 1µA when
all the regulators are disabled. The MIC2215 is a
µCap
design, which enables a stable output with small ceramic
output capacitors, reducing both cost and required board
space for output bypassing.
The MIC2215 is available in the miniature 16-pin, 4mm
×
4mm
MLF™ package.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Features
•
•
•
•
Input voltage range: +2.25V to +5.5V
70dB PSRR
Stable with ceramic output capacitor
High output accuracy:
–
±1.0%
initial accuracy
–
±2.0%
over temperature
Low dropout voltage of 100mV@150mA
Low quiescent current: 110µA per regulator
Fast turn-on time: 30µs
Zero off-mode current
Thermal shutdown protection
Current-limit protection
Tiny 16-pin (4mm
×
4mm) MLF™ package
Cellular phones
PCs and peripherals
Wireless LAN cards
PDAs
GPS
•
•
•
•
•
•
•
•
•
•
•
•
Applications
Typical Application
MIC2215-xxxBML
VIN1
VIN2
VIN3
OFF ON
OFF ON
OFF ON
VOUT1
VOUT2
VOUT3
Rx Chain
Tx Chain
Synth/TCXO/VCO
EN1
EN2
EN3
GND
CBYP
C
IN
= 1µF
Ceramic
C
OUT
= 1µF
Ceramic
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
April 2004
1
M9999-042704
MIC2215
Micrel
Ordering Information
Part Number
MIC2215-PMMBML
MIC2215-PPPBML
MIC2215-AAABML
Note:
1. For other voltage options, contact Micrel, Inc.
Voltage
(1)
V
O
1/V
O
2/V
O
3
3.0V/2.8V/2.8V
3.0/V3.0V/3.0V
Adj./Adj./Adj.
Junction
Temperature Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
16-Pin MLF™
16-Pin MLF™
16-Pin MLF™
Voltage
Adj.
1.5
1.6
1.8
1.85
1.9
2.0
2.1
2.5
2.6
2.65
2.7
2.8
2.85
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
I
L
M
N
O
P
Q
R
S
T
U
V
Table 1. Voltage Codes
M9999-042704
2
April 2004
MIC2215
Micrel
OUT1
ADJ1
ADJ3
OUT3
OUT1
NC
OUT3
OUT3
16 15 14 13
OUT1
VIN1
VIN2
OUT2
1
2
3
4
5 6 7 8
12
11
10
9
VIN3
GND
GND
BYP
Pin Configuration
16 15 14 13
OUT1
VIN1
VIN2
OUT2
1
2
3
4
5 6 7 8
ADJ2
EN1
EN2
EN3
12
11
10
9
VIN3
GND
GND
BYP
OUT2
EN1
EN2
EN3
MIC2215-xxxBML (ML)
(Fixed)
MIC2215-AAABML (ML)
(Adjustable)
Pin Description
Fixed Output
VOUT1
VIN1
VIN2
VOUT2
VOUT2
—
EN1
EN2
EN3
CBYP
GND
GND
VIN3
VOUT3
VOUT3
—
N/C
—
VOUT1
GND
Adj. Output
VOUT1
VIN1
VIN2
VOUT2
—
ADJ2
EN1
EN2
EN3
CBYP
GND
GND
VIN3
VOUT3
—
ADJ3
—
ADJ1
VOUT1
GND
Pin Number
1
2
3
4
5
5
6
7
8
9
10
11
12
13
14
14
15
15
16
Exposed Pad
Pin Function
Output voltage of regulator 1 (250mA). Connect externally to pin 16.
Supply input of regulator 1 (highest input voltage required for common
circuitry).
Supply input of regulator 2.
Output voltage of regulator 2 (250mA). For fixed output device, connect pins
4 and 5 externally.
Output voltage of regulator 2 (250mA). For fixed output device, connect pins
4 and 5 externally.
Adjust Input. Feedback input for regulator 2.
Enable input to regulator 1. Enables regulator 1 output. Active high input.
High = on, low = off.
Enable input to regulator 2. Enables regulator 2 output. Active high input.
High = on, low = off.
Enable input to regulator 3. Enables regulator 3 output. Active high input.
High = on, low = off.
Reference Bypass: Connect external 0.01µF to GND to reduce output noise.
May be left open.
Ground.
Ground.
Supply input of regulator 3.
Output voltage of regulator 3 (250mA). For fixed output device, connect pins
13 and 14 externally.
Output voltage of regulator 3 (250mA). For fixed output device, connect pins
13 and 14 externally.
Adjust Input. Feedback input for regulator 3.
No Connect. Not internally connected.
Adjust Input. Feedback input for regulator 1.
Output voltage of regulator 1 (250mA). Connect externally to pin 1.
Ground.
April 2004
3
M9999-042704
MIC2215
Micrel
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
) .................................. 0V to +7V
Enable Input Voltage (V
EN
) ................................. 0V to +7V
Power Dissipation (P
D
) ........................ Internally Limited
(3)
Junction Temperature (T
J
) ....................... –40°C to +125°C
Storage Temperature (T
S
) ......................... –65°C to 150°C
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Operating Ratings
(2)
Supply Input Voltage
(V
IN1
) ..................................................... +2.25V to +5.5V
(V
IN2
, V
IN3
) ............................................... +2.25V to V
IN1
Enable Input Voltage (V
EN
) ................................. 0V to V
IN1
Junction Temperature (T
J
) ....................... –40°C to +125°C
Package Thermal Resistance
MLF™ (θ
JA
) ......................................................... 45°C/W
Electrical Characteristics
(4)
V
IN1
= V
IN2
= V
IN3
= V
OUT
(highest nominal) +1.0V; C
OUT
= 1.0µF, I
OUT
= 100µA; T
J
= 25°C,
bold
values indicate –40°C to + 125°C; unless noted.
Parameter
Output Voltage Accuracy
Output Voltage Temp. Coefficient
Line Regulation
Load Regulation
Dropout Voltage
V
IN
= V
OUT
+1V to 5.5V
I
OUT
= 100µA to 250mA
I
OUT
= 100µA
I
OUT
= 50mA
I
OUT
= 100mA
I
OUT
= 150mA
I
OUT
= 250mA
Ground Current
I
OUT1
= I
OUT2
= I
OUT3
= 100µA
I
OUT1
= 100µA; I
OUT2
/I
OUT3
= off
I
OUT1
= I
OUT2
= I
OUT3
= 250mA
Quiescent Current
Ripple Rejection
V
EN1
= V
EN2
= V
EN3
= 0V
V
IN
= V
OUT
+ 1.0V; I
OUT
= 150mA, f = 0.1kHz to 1kHz,
C
BYP
= 0.1µF
V
IN
= V
OUT
+ 0.4V; I
OUT
= 150mA, f = 0.1kHz to 1kHz,
C
BYP
= 0.1µF
V
IN
= V
OUT
+ 0.2V, I
OUT
= 150mA, f = 0.1kHz to 1kHz,
C
BYP
= 0.1µF
Current Limit
Output Voltage Noise
Turn-On Time
Enable Input
Enable Input Voltage
Logic Low (Regulator shutdown)
Logic High (Regulator enabled)
Enable Input Current
V
IL
< 0.4V (Regulator shutdown)
V
IH
> 1.5V (Regulator enabled)
Notes:
1. Exceeding maximum ratings may damage the device.
2. The device is not guaranteed to work outside its operating ratings.
3. 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.
4. Specification for packaged product only.
Conditions
Min
–1.0
–2.0
Typ
Max
+1.0
+2.0
Units
%
%
ppm/C
40
0.015
0.3
2
32
63
100
170
280
110
420
0.2
70
60
45
350
700
30
30
100
150
275
400
150
550
1
0.3
0.5
%/V
%
mV
mV
mV
mV
mV
µA
µA
µA
µA
dB
dB
dB
mA
µVrms
µs
V
OUT
= 0V (All regulators)
C
BYP
= 0.1µF, f =10Hz to 100kHz
C
BYP
= 0.01µF
0.4
1.5
1.0
0.01
V
V
µA
µA
M9999-042704
4
April 2004
MIC2215
Micrel
Typical Characteristics
T
A
= +25°C, unless otherwise noted.
Ground Current
vs. Temperature for LDO 1
160
GROUND CURRENT (µA)
140
120 LOAD = 50mA
100
80
60
40
20
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
LOAD = 0mA
LOAD = 100mA
GROUND CURRENT (µA)
140
120
100
80
60
40
20
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
LOAD = 50mA
LOAD = 0mA
Ground Current
vs. Temperature for LDO 2
LOAD = 100mA
GROUND CURRENT (µA)
140
120
100
Ground Current
vs. Temperature for LDO 3
LOAD = 100mA
LOAD = 50mA
80 LOAD = 0mA
60
40
20
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Output Voltage
vs. Temperature for LDO 1
3.03
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.02
3.01
3.00
2.99
2.98
2.97
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
3.03
3.02
3.01
3.00
2.99
2.98
Output Voltage
vs. Temperature for LDO 2
3.03
OUTPUT VOLTAGE (V)
3.02
3.01
3.00
2.99
2.98
Output Voltage
vs. Temperature for LDO 3
2.97
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
2.97
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Dropout Voltage
vs. Temperature for LDO 1
250
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
200
250mA LOAD
150
100
150mA LOAD
250
200
Dropout Voltage
vs. Temperature for LDO 2
250
DROPOUT VOLTAGE (mV)
200
Dropout Voltage
vs. Temperature for LDO 3
250mA LOAD
150
100
150mA LOAD
250mA LOAD
150
150mA LOAD
100
50
50mA LOAD
50 50mA LOAD
V
OUT
= 3V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
50 50mA LOAD
V
OUT
= 3V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
V
OUT
= 3V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Enable Threshold
vs. Supply Voltage for LDO 1
1.4
ENABLE THRESHOLD (V)
ENABLE THRESHOLD (V)
1.2
1
0.8
Enable OFF
0.6
0.4
0.2
0
2.25
3
3.75
4.5
5.25
SUPPLY VOLTAGE (V)
Enable ON
Enable Threshold
vs. Supply Voltage for LDO 2
1.4
1.2
1
0.8
Enable OFF
0.6
0.4
0.2
0
2.25
3
3.75
4.5
5.25
SUPPLY VOLTAGE (V)
ENABLE THRESHOLD (V)
Enable ON
Enable Threshold
vs. Supply Voltage for LDO 3
1.4
1.2
1
0.8
Enable OFF
0.6
0.4
0.2
0
2.25
3
3.75
4.5
5.25
SUPPLY VOLTAGE (V)
Enable ON
April 2004
5
M9999-042704
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