MIC2215
Triple High PSRR, Low Noise µCap 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 featuring 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.
Data sheets and 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
•
•
•
•
•
•
•
Applications
•
•
•
•
•
Cellular phones
PCs and peripherals
Wireless LAN cards
PDAs
GPS
___________________________________________________________________________________________________________
Typical Application
MIC2215-xxx_ML
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
MLF and
MicroLeadFrame
are registered 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
January 2007
1
M9999-011207
Micrel, Inc.
MIC2215
Ordering Information
Part Number
Standard
MIC2215-MMMBML
MIC2215-PMMBML
MIC2215-PPGBML
MIC2215-PPMBML
MIC2215-PPPBML
MIC2215-AAABML
Note:
For other voltage options, contact Micrel for details.
Part Number
Pb-Free
MIC2215-MMMYML
MIC2215-PMMYML
MIC2215-PPGYML
MIC2215-PPMYML
MIC2215-PPPYML
MIC2215-AAAYML
Voltage
(V
O
1/V
O
2/V
O
3)
2.8V/2.8V/2.8V
3.0V/2.8V/2.8V
3.0V/3.0V/1.8V
3.0V/3.0V/2.8V
3.0V/3.0V/3.0V
Adj./Adj./Adj.
(1)
Junction
Temp. Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
16-Pin 4mm x 4mm MLF
®
16-Pin 4mm x 4mm MLF
®
16-Pin 4mm x 4mm MLF
®
16-Pin 4mm x 4mm MLF
®
16-Pin 4mm x 4mm MLF
®
16-Pin 4mm x 4mm 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
January 2007
2
M9999-011207
Micrel, Inc.
MIC2215
Pin Configuration
OUT1
OUT1
OUT3
OUT3
NC
OUT1
VIN1
VIN2
OUT2
VIN3
GND
GND
BYP
OUT1
VIN1
VIN2
OUT2
OUT3
ADJ1
ADJ3
VIN3
GND
GND
BYP
EN1
EN2
MIC2215-xxx_ML (ML)
(Fixed)
OUT2
MIC2215-AAA_ML (ML)
(Adjustable)
Pin Description
Pin Number
1
2
3
4
Pin Name
VOUT1
VIN1
VIN2
VOUT2
VOUT2
(Fixed)
ADJ2
(Adj.)
EN1
EN2
EN3
CBYP
GND
GND
VIN3
VOUT3
VOUT3
(Fixed)
ADJ3
(Adj.)
NC
(Fixed)
ADJ1
(Adj.)
VOUT1
GND
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.
5
6
7
8
9
10
11
12
13
14
15
16
Exposed Pad
ADJ2
EN1
EN2
EN3
EN3
January 2007
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M9999-011207
Micrel, Inc.
MIC2215
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ............................................... 0V to 7V
Enable 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
ESD Rating
(4)
Operating Ratings
(2)
Supply Voltage
(V
IN1
) ........................................................ 2.25V to 5.5V
(V
IN2
, V
IN3
) ..................................................2.25V to V
IN1
Enable Voltage (V
EN
).............................................0V to V
IN1
Junction Temperature (T
J
) ........................ –40°C to +125°C
Package Thermal Resistance
4x4 MLF-16 (θ
JA
) ...............................................45°C/W
Electrical Characteristics
(5)
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
Enable Input Current
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
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. Devices are ESD sensitive. Handling precautions recommended.
5. Specification for packaged product only.
Condition
Min
–1
–2
Typ
Max
+1
+2
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
0.4
1.5
1.0
0.01
150
275
400
150
550
1
0.3
0.5
%/V
%
mV
mV
mV
mV
mV
µA
µA
µA
µA
dB
dB
dB
mA
µV
RMS
µs
V
V
µA
µA
V
OUT
= 0V (All regulators)
C
BYP
= 0.1µF, f = 10Hz to 100kHz
C
BYP
= 0.01µF
Logic Low (Regulator shutdown)
Logic High (Regulator enabled)
V
IL
< 0.4V (Regulator shutdown)
V
IH
> 1.5V (Regulator enabled)
January 2007
4
M9999-011207
Micrel, Inc.
MIC2215
Typical Characteristics
TA = +25°C, unless otherwise noted
January 2007
5
M9999-011207
嵌入式系统
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