MIC2210
Micrel
MIC2210
Dual µCap LDO with Open-Drain Driver
REV. 11/04
General Description
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.
* For each output.
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 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
Typical Application
MIC2210-xxBML
VIN
EN1
EN2
CBYP
C
BYP
SW
GND
VOUT1
VOUT2
ERR
DRV
LED x10
Keyboard
Backlight
Audio Amp
Baseband IC
1 F
1 F
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
Manufacturing
Part Number
MIC2210-PSBML
MIC2210-GSBML
MIC2210-MWYML
MIC2210-PSYML
MIC2210-SSYML
X
X
X
Pb-FREE
Voltage*
(Vo1/Vo2)
3.0V/3.3V
1.8V/3.3V
2.8V/1.6V
3.0V/3.3V
3.3V/3.3V
Junction Temp. Range
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
Package
10-Pin 3x3 MLF
TM
10-Pin 3x3 MLF
TM
10-Pin 3x3 MLF
TM
10-Pin 3x3 MLF
TM
10-Pin 3x3 MLF
TM
Ordering Information
Full Part NUmber
MIC2210-3.0/3.3BML
MIC2210-1.8/3.3BML
MIC2210-2.8/1.6YML
MIC2210-3.0/3.3YML
MIC2210-3.3/3.3YML
* For other output voltage options, contact Micrel marketing.
Voltage
Adj.
1.5
1.6
1.8
Code
A
F
W
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
EN1 2
EN2 3
BYP 4
SW 5
10 VOUT1
9 VOUT2
8 ERR
7 DRV
6 GND
10-Pin 3mm
×
3mm MLF™ (ML)
(Top View)
Pin Description
Pin Number
MLF-10 (3x3)
1
2
3
4
5
6
7
8
9
10
EP
Pin Name
VIN
EN1
EN2
CBYP
SW
GND
DRV
ERR
VOUT2
VOUT1
GND
Pin Function
Supply Input: (VIN1 and VIN2 are internally tied together.)
Enable Input to Regulator 1: Enables regulator 1 output. Active high
input. High = on, low = off. Do not leave floating.
Enable Input to Regulator 2: Enables regulator 2 output. Active high
input. High = on, low = off. Do not leave floating.
Reference Bypass: Connect external 0.01µF to GND to reduce output
noise. May be left open.
Active high signal drives open-drain N-channel MOSFET.
Ground: Connect externally to Exposed Pad.
Open-Drain Output: Capable of sinking 150mA.
Error Flag Output: Open-drain output. Active low indicates an output
undervoltage condition on regulator 2.
Output of Regulator 2: 300mA output current
Output of Regulator 1: 150mA output current
Ground: Internally connected to the Exposed Pad. Connect externally
to pin 6.
November 2004
3
MIC2210
MIC2210
Micrel
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
MLF™-10 (θ
JA
) .................................................... 60°C/W
Electrical Characteristics
(Note 4)
V
IN
= V
OUT
+1.0V for higher output of the regulator pair; C
OUT
= 1.0µF, I
OUT
= 100µA; T
J
= 25°C,
bold
values indicate
–40°C ≤ T
J
≤ +125°C; unless noted.
Parameter
Conditions
Min
Typ
Output Voltage Accuracy
Output Voltage Temp.
Coefficient
Line Regulation;
Note 5
Load Regulation
V
IN
= V
OUT
+1V to 5.5V
I
OUT
= 100µA to 150mA (Regulator 1 and 2)
I
OUT
= 100µA to 300mA (Regulator 2)
–0.3
–0.6
Variation from nominal V
OUT
–1.0
–2.0
40
0.02
0.2
0.3
0.6
1.0
1.5
120
240
48
60
2.0
60
40
150
300
280
450
30
0.6
1.8
–1
–1
90
96
0.02
–1
0.01
0.1
+1
0.01
0.01
+1
+1
460
700
190
250
340
420
65
80
Max
+1.0
+2.0
Units
%
%
ppm/C
%/V
%
%
mV
mV
mV
µA
µA
µA
µA
dB
dB
mA
mA
µVrms
V
V
µA
µA
%
%
mV
µA
Dropout Voltage;
Note 6
I
OUT
= 150mA (Regulator 1 and 2)
I
OUT
= 300mA (Regulator 2)
Ground Pin Current
I
OUT1
= I
OUT2
= 0µA
I
OUT1
= 150mA & I
OUT2
= 300mA
V
EN
≤ 0.4V
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)
V
ERR
V
OL
f = 1kHz; C
OUT
= 1.0µF ceramic; C
BYP
= 10nF
V
OUT
= 0V (Regulator 1)
f = 20kHz; C
OUT
= 1.0µF ceramic; C
BYP
= 10nF
V
OUT
= 0V (Regulator 2)
C
OUT
=1µF, C
BYP
=0.01µF, 10Hz to 100kHz
Logic Low (Regulator Shutdown)
Logic High (Regulator Enabled)
V
IH
> 1.8V (Regulator Enabled)
V
IL
< 0.6V (Regulator Shutdown)
High Threshold, % of nominal V
OUT2
(Flag OFF)
Flag Leakage Current, Flag OFF
Flag Output Logic Low Voltage; I
L
= 100µA
Low Threshold, % of nominal V
OUT2
(Flag ON)
I
ERR
MIC2210
4
November 2004
MIC2210
Parameter
DRV Output
Voltage Low
Leakage Current
SW Input Voltage
SW Input Current
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Micrel
Conditions
I
DRV
= 150mA
I
DRV
= 0mA, V
DRV
= 5.5V, SW = 0V
Logic Low (DRV Shutdown)
Logic High (DRV Enabled)
V
IH
> 1.8V (DRV Enabled)
V
IL
< 0.6V (DRV Shutdown)
–1
1.8
–1
–1
0.01
0.01
+1
+1
Min
Typ
0.2
0.01
Max
0.5
0.6
+1
0.6
Units
V
µA
V
V
µA
µA
Exceeding maximum rating may damage the device.
The device is not guaranteed to work outside its operating rating.
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 allow-
able power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Specification for packaged product only.
Minimum input for line regulation test is set to V
OUT
+ 1V relative to the highest output voltage.
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
模拟电子
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