MIC2210_06 [MICREL]
Dual μCap LDO with Open-Drain Driver; 双μCap LDO具有开漏驱动器
| 型号： | MIC2210_06 |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | Dual μCap LDO with Open-Drain Driver |
| 文件： | 总11页 (文件大小：1000K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC2210
Dual µCap LDO with Open-Drain Driver
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.
• 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
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.
• Low dropout voltage of 80mV @ 100mA
• Ultra-low quiescent current of 48µA
• High output accuracy:
–
–
+1.0% initial accuracy
+2.0% over temperature
The MIC2210 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
• Thermal shutdown protection
• Current limit protection
• Tiny 10-pin 3mm × 3mm MLF® package
The MIC2210 is available in fixed output voltages in the
10-pin 3mm × 3mm MLF® leadless package.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Applications
• Cellular/PCS phones
• Wireless modems
• PDAs
*For each output.
___________________________________________________________________________________________________________
Typical Application
LED x10
Keyboard
Backlight
MIC2210-xx_ML
Audio Amp
VIN
VOUT1
VOUT2
ERR
Baseband IC
EN1
EN2
CBYP
SW
DRV
CBYP
GND
MIC2210 Typical Cell Phone Application
MLF and MicroLeadFram 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
M9999-112006
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Micrel, Inc.
MIC2210
Ordering Information
Part Number
Voltage*
(Vo1/Vo2)
Junction
Temp. Range
Package
Full
Manufacturing
Pb-Free
MIC2210-1.5/2.8BML
MIC2210-1.8/3.3BML
MIC2210-2.8/1.6BML
MIC2210-2.8/3.0BML
MIC2210-3.0/3.3BML
MIC2210-3.3/3.3BML
MIC2210-FMBML
MIC2210-GSBML
MIC2210-MWBML
MIC2210-MPBML
MIC2210-PSBML
MIC2210-SSBML
MIC2210-FMYML
MIC2210-GSYML
MIC2210-MWYML
MIC2210-MPYML
MIC2210-PSYML
MIC2210-SSYML
1.5V/2.8V
1.8V/3.3V
2.8V/1.6V
2.8V/3.0V
3.0V/3.3V
3.3V/3.3V
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
10-Pin 3x3 MLF®
10-Pin 3x3 MLF®
10-Pin 3x3 MLF®
10-Pin 3x3 MLF®
10-Pin 3x3 MLF®
10-Pin 3x3 MLF®
* For other output voltage options, contact Micrel for details.
Voltage
Adj.
1.5
Code
A
F
1.6
W
G
D
Y
1.8
1.85
1.9
2.0
H
E
2.1
2.5
J
2.6
K
2.7
L
2.8
M
N
O
P
2.85
2.9
3.0
3.1
Q
R
S
3.2
3.3
3.4
T
3.5
U
V
3.6
Table 1. Voltage Codes
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MIC2210
Pin Configuration
10 VOUT1
9 VOUT2
8 ERR
VIN
EN1
EN2
BYP
SW
1
2
3
4
5
7 DRV
6 GND
10-Pin 3mm x 3mm MLF® (ML)
(Top View)
Pin Description
Pin Number
Pin Name
VIN
Pin Function
1
2
Supply Input: (VIN1 and VIN2 are internally tied together.)
EN1
Enable Input to Regulator 1: Enables regulator 1 output. Active high input.
High = on, low = off. Do not leave floating.
3
4
EN2
Enable Input to Regulator 2: Enables regulator 2 output. Active high input.
High = on, low = off. Do not leave floating.
CBYP
Reference Bypass: Connect external 0.01µF to GND to reduce output noise.
May be left open.
5
6
7
8
SW
GND
DRV
ERR
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.
9
VOUT2
VOUT1
GND
Output of Regulator 2: 300mA output current.
10
EP
Output of Regulator 1: 150mA output current.
Ground: Internally connected to the Exposed Pad. Connect externally to pin 6.
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MIC2210
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN)............................................... 0V to 7V
Enable Voltage (VEN).............................................. 0V to 7V
Power Dissipation (PD)...........................Internally Limited(3)
Lead Temperature (soldering, 5 sec.)........................ 260°C
Junction Temperature (TJ) ........................–40°C to +125°C
Storage Temperature (Ts) .........................–65°C to +150°C
Supply Voltage (VIN)....................................... 2.25V to 5.5V
Enable Voltage (VEN).............................................. 0V to VIN
Junction Temperature (TJ) ........................–40°C to +125°C
Package Thermal Resistance
MLF-10 (θJA) 1” square 2oz. copper..................60°C/W
Electrical Characteristics(4)
VIN = VOUT + 1V for higher output of the regulator pair; COUT = 1µF, IOUT = 100µA; TJ = 25°C, bold values indicate
–40°C< TJ < +125°C, unless noted.
Parameter
Condition
Min
Typ
Max
Units
Output Voltage Accuracy
Variation from nominal VOUT
–1
–2
+1
+2
%
%
Output Voltage Temp. Coefficient
40
ppm/C
Line Regulation; Note 5
VIN = VOUT +1V to 5.5V
–0.3
–0.6
0.02
+0.3
+0.6
%/V
%/V
Load Regulation
IOUT = 100µA to 150mA (Regulator 1 and 2)
IOUT = 100µA to 300mA (Regulator 2)
IOUT = 150mA (Regulator 1 and 2)
0.2
1
%
%
1.5
Dropout Voltage; Note 6
120
240
48
190
250
mV
mV
IOUT = 300mA (Regulator 2)
IOUT1 = IOUT2 = 0µA
340
420
mV
mV
Ground Pin Current
65
80
µA
µA
IOUT1 = 150mA & IOUT2 = 300mA
VEN ≤ 0.4V
60
µA
µA
Ground Pin Current in Shutdown
Ripple Rejection
2
f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF
f = 20kHz; COUT = 1.0µF ceramic; CBYP = 10nF
VOUT = 0V (Regulator 1)
60
40
dB
dB
Current Limit
150
300
280
450
30
460
700
mA
VOUT = 0V (Regulator 2)
mA
Output Voltage Noise
Enable Output
COUT =1µF, CBYP =0.01µF, 10Hz to 100kHz
µVrms
Enable Input Voltage
Logic Low (Regulator Shutdown)
Logic High (Regulator Enabled)
VIL < 0.6V (Regulator Shutdown)
VIH > 1.8V (Regulator Enabled)
0.6
V
V
1.8
–1
–1
Enable Input Current
0.01
0.01
+1
+1
µA
µA
ERROR Flag Output (LDO2)
VERR
Low Threshold, % of nominal VOUT2 (Flag ON)
High Threshold, % of nominal VOUT2 (Flag OFF)
Flag Output Logic Low Voltage; IL = 100µA
Flag Leakage Current, Flag OFF
90
–1
%
%
96
0.1
+1
VOL
0.02
0.01
mV
µA
IERR
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Micrel, Inc.
MIC2210
Parameter
DRV Output
Voltage Low
Condition
Min
Typ
Max
Units
IDRV = 150mA
0.2
0.5
V
0.6
Leakage Current
SW Input Voltage
IDRV = 0mA, VDRV = 5.5V, SW = 0V
Logic Low (DRV Shutdown)
Logic High (DRV Enabled)
VIL < 0.6V (DRV Shutdown)
–1
0.01
+1
µA
V
0.6
1.8
–1
–1
V
SW Input Current
0.01
0.01
+1
+1
µA
µA
V
IH > 1.8V (DRV Enabled)
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 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.
4. Specification for packaged product only.
5. Minimum input for line regulation test is set to VOUT + 1V relative to the highest output voltage.
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1Vdifferential.
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.
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MIC2210
Typical Characteristics
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MIC2210
Typical Characteristics (cont.)
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MIC2210
Functional Characteristics
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MIC2210
Functional Diagram
VIN
OUT1
LDO1
EN1
OUT2
ERR
LDO2
Error
Comparator
EN2
DRV
CBYP
SW
Reference
GND
NGND
MIC2210 Fixed Voltage Block Diagram
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Micrel, Inc.
MIC2210
Bypass Capacitor
Functional Description
The internal reference voltage of the MIC2210 can be
by-passed 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.
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 cell phones.
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 perform-
ance has been optimized for a 1µF ceramic type output
capacitor.
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.
X7R/X5R dielectric-type ceramic capacitors are recom-
mended 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 capaci-
tance over the equivalent operating temperature range.
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.
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Micrel, Inc.
MIC2210
Package Information
10-Pin 3mm x 3mm 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
The 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.
© 2002 Micrel, Incorporated.
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