MIC5210-5.0BMMT&R [MICROCHIP]
Fixed Positive LDO Regulator, 2 Output, 5V1, 5V2, PDSO8, MSOP-8;
| 型号： | MIC5210-5.0BMMT&R |
| 厂家： | 
MICROCHIP |
| 描述： | Fixed Positive LDO Regulator, 2 Output, 5V1, 5V2, PDSO8, MSOP-8 光电二极管 |
| 文件： | 总11页 (文件大小：189K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5210
Dual 150mA LDO Regulator
General Description
Features
The MIC5210 is a dual linear voltage regulator with very
low dropout voltage (typically 10mV at light loads and
140mV at 100mA), very low ground current (225µA at
10mA output), and better than 1% initial accuracy. It also
features individual logic-compatible enable/shutdown
control inputs.
• Micrel Mini 8™ MSOP package
• Up to 150mA per regulator output
• Low quiescent current
• Low dropout voltage
• Wide selection of output voltages
• Tight load and line regulation
• Low temperature coefficient
• Current and thermal limiting
• Reversed input polarity protection
• Zero off-mode current
Both regulator outputs can supply up to 150mA at the
same time as long as each regulator’s maximum junction
temperature is not exceeded.
Key features include an undervoltage monitor with an error
flag output, a reference bypass pin to improve its already
low-noise performance (8-pin versions only), reversed-
battery protection, current limiting, and overtemperature
shutdown.
• Logic-controlled electronic enable
Designed especially for hand-held battery powered
devices, the MIC5210 can be switched by a CMOS or TTL
compatible logic signal, or the enable pin can be
connected to the supply input for 3-terminal operation.
When disabled, power consumption drops nearly to zero.
Dropout ground current is minimized to prolong battery life.
Applications
• Cellular telephones
• Laptop, notebook, and palmtop computers
• Battery-powered equipment
• Bar code scanners
• SMPS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies
Key features include current limiting, overtemperature
shutdown, and protection against reversed battery.
The MIC5210 is available in 2.7V, 2.8V, 3.0V, 3.3V, 3.6V,
4.0V and 5.0V fixed voltage configurations. Other voltages
are available; contact Micrel for details.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Typical Application
Low-Noise + Ultralow-Noise (Dual) Regulator
MM8 and Micrel Mini 8 are trademarks of Micrel, 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
M9999-090806
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Micrel, Inc.
MIC5210
Ordering Information
Part Number
Marking Pb-Free
Contact Factory
Voltage*
Side A/B
Junction
Temp. Range
Accuracy
Package
Standard
Marking
MIC5210-2.7BMM
MIC5210-2.8BMM
MIC5210-2.9BMM
MIC5210-3.0BMM
MIC5210-3.3BMM
MIC5210-3.6BMM
MIC5210-4.0BMM
MIC5210-5.0BMM
MIC5210-2.8/3.0BMM
2.7V/2.7V
2.8V/2.8V
2.9V/2.9V
3.0V/3.0V
3.3V/3.3V
3.6V/3.6V
4.0V/4.0V
5.0V/5.0V
2.8V/3.0V
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
MIC5210-2.8YMM
Contact Factory
MIC5210-3.0YMM
MIC5210-3.3YMM
Contact Factory
Contact Factory
MIC5210-5.0YMM
MIC5210-MPYMM**
MP
MPY
* Other voltages available. Contact Micrel for details.
** Order Entry P/N for Pb-Free has been abbreviated in compliance with Micrel systems. MIC5210-MPYMM = Full P/N: MIC5210-2.8/3.0YMM.
Voltage Code
Key
M
2.8
3.0
P
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Micrel, Inc.
MIC5210
Pin Configuration
MIC5210BMM
Pin Description
Pin Number
Pin Name Pin Function
1
2
3
4
OUTA
GND
Regulator Output A
Ground
OUTB
BYPB
Regulator Output B
Reference Bypass B: Connect external 470pF capacitor to GND to reduce
output noise in regulator “B”. May be left open.
5
ENB
Enable/Shutdown B (Input): CMOS compatible input. Logic high = enable, logic
low or open = shutdown. Do not leave floating.
6
7
INB
Supply Input B
ENA
Enable/Shutdown A (Input): CMOS compatible input. Logic high = enable, logic
low or open = shutdown. Do not leave floating.
8
INA
Supply Input A
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Micrel, Inc.
MIC5210
Absolute Maximum Ratings
Operating Ratings
Supply Input Voltage (VIN).............................. –20V to +20V
Enable Input Voltage (VEN)............................. –20V to +20V
Power Dissipation (PD)..............................Internally Limited
Storage Temperature Range ....................–60°C to +150°C
Lead Temperature (soldering, 5 sec.)........................ 260°C
Supply Input Voltage (VIN)................................. 2.5V to 16V
Enable Input Voltage (VEN)................................... 0V to 16V
Junction Temperature (TJ) ..........................–40°C to +85°C
Thermal Resistance (θJA).......................................... Note 1
Electrical Characteristics
VIN = VOUT +1V; IL = 100µA; CL = 1.0µF; VEN ≥ 2.0V; TJ = 25°C, bold values indicate –40°C < TJ < +125°C, unless noted.
Symbol
Parameter
Condition
Min
Typ
Max
Units
VO
Output Voltage Accuracy
Variation from specified VOUT
–1
–2
1
2
%
%
∆VO/∆T
∆VO/VO
∆VO/VO
VIN – VO
Output Voltage Temperature
Coefficient
Note 2
40
ppm/°C
Line Regulation
VIN = VOUT +1V to 16V
IL = 0.1mA to 150mA (Note 3)
0.004
0.02
0.012
0.05
%/V
%/V
Load Regulation
0.2
0.5
%
%
Dropout Voltage, Note 4
IL = 100µA
IL = 50mA
IL = 100mA
IL = 150mA
10
50
70
mV
mV
mV
mV
mV
mV
mV
mV
110
140
165
150
230
250
300
275
350
IGND
IGND
Quiescent Current
V
V
EN ≤ 0.4V (shutdown)
EN ≤ 0.18V (shutdown)
0.01
1
5
µA
µA
Ground Pin Current, Note 5
(per regulator)
VEN ≥ 2.0V, IL = 100µA
80
350
600
1300
125
150
600
µA
µA
µA
µA
µA
µA
µA
µA
IL = 50mA
800
IL = 100mA
1000
1500
1900
2500
IL = 150mA
PSRR
ILIMIT
Ripple Rejection
Current Limit
Frequency = 100Hz, IL = 100µA
75
dB
mA
VOUT = 0V
320
0.05
500
∆VO/∆PD
Thermal Regulation
Note 6
%/W
eno
Output Noise (Regulator B only) IL = 50mA, CL = 2.2µF,
470pF from BYPB to GND
260
nV/√Hz
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Micrel, Inc.
MIC5210
Symbol
Parameter
Condition
Min
2.0
Typ
Max
Units
Enable Input
VIL
Enable Input Logic-Low Voltage Regulator shutdown
0.4
0.18
V
V
VIH
Enable Input Logic-High
Voltage
Regulator enabled
V
IIL
Enable Input Current
V
V
IL ≤ 0.4V
IL ≤ 0.18V
0.01
5
–1
–2
20
25
µA
µA
µA
µA
IIH
VIH ≥ 2.0V
IH ≥ 2.0V
V
Notes:
1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating
the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the
junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature
is calculated using: PD(max) = (T J(max) – TA) / θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the
regulator will go into thermal shutdown. The θJA of the 8-pin MSOP (MM) is 200°C/W mounted on a PC board (see “Thermal Considerations” section
for further details).
2. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
3. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range
from 0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
4. 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.
5. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load
current plus the ground pin current.
6. Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for a 150mA load pulse at VIN = 16V for t = 10ms.
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MIC5210
Typical Characteristics
Power Supply
Power Supply
Power Supply
Rejection Ratio
Rejection Ratio
Rejection Ratio
0
0
-20
0
-20
VIN = 6V
VOUT = 5V
VIN = 6V
VOUT = 5V
VIN = 6V
OUT = 5V
V
-20
-40
-60
-40
-40
-60
-60
-80
-80
-80
IOUT = 100µA
OUT = 1µF
IOUT = 1mA
IOUT = 10mA
COUT = 1µF
C
COUT = 1µF
-100
-100
-100
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
10 100k 10M
100
10
100k
10M
10
100k
10M
100
100
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
Power Supply
Rejection Ratio
Power Supply
Rejection Ratio
0
0
0
VIN = 6V
OUT = 5V
V
IN = 6V
VIN = 6V
VOUT = 5V
V
VOUT = 5V
-20
-40
-20
-40
-20
-40
-60
-60
-60
IOUT = 1mA
OUT = 2.2µF
CBYP = 0.01µF
IOUT = 100µA
OUT = 2.2µF
CBYP = 0.01µF
IOUT = 100mA
COUT = 1µF
C
-80
-80
-80
C
-100
-100
-100
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
10 10M
100
10
100k
10M
10
100k
10M
100k
FREQUENCY (Hz)
100
100
FREQUENCY (Hz)
FREQUENCY (Hz)
Power Supply
Rejection Ratio
Turn-On Time
vs. Bypass Capacitance
Power Supply Ripple Rejectio
vs. Voltage Drop
0
10000
60
VIN = 6V
OUT = 5V
50
V
-20
-40
1mA
40
1000
100
10
30
20
10
0
10mA
IOUT = 100mA
COUT = 1µF
-60
IOUT = 10mA
OUT = 2.2µF
BYP = 0.01µF
-80
C
C
-100
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
10
100k
FREQUENCY (Hz)
10M
100
10
100
1000
10000
0
0.1
0.2
0.3
0.4
CAPACITANCE (pF)
VOLTAGE DROP (V)
Power Supply
Power Supply Ripple Rejection
vs. Voltage Drop
Rejection Ratio
Noise Performance
0
-20
100
10
1
V
IN = 6V
VOUT = 5V
90
80
70
60
50
40
30
20
10
0
10mA, COUT = 1µF
1mA
-40
0.1
1mA
COUT = 1µF
BYP = 10nF
(Reg. B only)
IOUT = 100mA
COUT = 2.2µF
C
-60
0.01
0.001
0.0001
10mA
IOUT = 100mA
COUT = 2.2µF
BYP = 0.01µF
-80
CBYP = 0.01µF
VOUT = 5V
C
-100
1E+11E+21E1k+311E0+k41E+51E1M+6 E+7
10
100
100k
10M
10
1E+11E+21E+31E+41E+51E+61E+7
1k
0
0.1
0.2 0.3
0.4
100
10k 100k 1M 10M
FREQUENCY (Hz)
VOLTAGE DROP (V)
FREQUENCY (Hz)
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MIC5210
Noise Performance
(Regulator B)
Noise Performance
(Regulator B)
Noise Performance
10
1
10
1
100mA
100mA
10mA
10mA
0.1
0.1
100mA
0.01
0.001
0.0001
0.01
0.001
0.0001
1mA
VOUT = 5V
COUT = 10µF
electrolytic
VOUT = 5V
OUT = 22µF
tantalum
CBYP = 10nF
VOUT = 5V
OUT = 10µF
electrolytic
1mA
C
1mA
C
10mA
C
BYP = 100pF
10
1k
10
1k
10
1k
10k100k1M10M
1E+11E+21E+311E0+k411E0+05k1E1M+611E0+M7
1E+11E+21E+311E0+k411E00+5k1E1M+611E0+M7
100
100
100
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
Noise Performance
Noise Performance
Dropout Voltage
vs. Output Current
(Regulator B)
(Regulator B)
10
10
320
280
240
200
160
120
80
1
0.1
1
10mA
100mA
+125°C
100mA
+25°C
0.1
1mA
0.01
0.01
1mA
VOUT = 5V
COUT = 10µF
electrolytic
VOUT = 5V
COUT = 10µF
electrolytic
CBYP = 10nF
–40°C
10mA
0.001
0.001
40
CBYP = 1nF
0.0001
0.0001
0
10
1k
10
1E+11E+21E+311E0+k411E0+05k1E1M+611E0+M7
1E+111E0+021E1k+311E0+k41E+51E+611E0+M7
0
40
80
120
160
100
100k 1M
FREQUENCY (Hz)
FREQUENCY (Hz)
OUTPUT CURRENT (mA)
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Micrel, Inc.
MIC5210
Block Diagram
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Micrel, Inc.
MIC5210
No-Load Stability
Application Information
The MIC5210 will remain stable and in regulation with no
load (other than the internal voltage divider) unlike many
other voltage regulators. This is especially important in
CMOS RAM keep-alive applications.
Enable/Shutdown
Forcing EN (enable/shutdown) high (> 2V) enables the
regulator. EN is compatible with CMOS logic gates.
If the enable/shutdown feature is not required, connect
EN to IN (supply input).
Dual-Supply Operation
When used in dual supply systems where the regulator
load is returned to a negative supply, the output voltage
must be diode clamped to ground.
Input Capacitor
A 1µF capacitor should be placed from IN to GND if
there is more than 10 inches of wire between the input
and the ac filter capacitor or if a battery is used as the
input.
Thermal Considerations
Multilayer boards having a ground plane, wide traces
near the pads, and large supply bus lines provide better
thermal conductivity.
Reference Bypass Capacitor
BYPB (reference bypass) is connected to the internal
voltage reference of regulator B. A 470pF capacitor
(CBYP) connected from BYPB to GND quiets this
reference, providing a significant reduction in output
noise. CBYP reduces the regulator phase margin; when
using CBYP, output capacitors of 2.2µF or greater are
generally required to maintain stability.
The MIC5210-xxBMM (8-pin MSOP) has a thermal
resistance of 200°C/W when mounted on a FR4 board
with minimum trace widths and no ground plane.
PC Board
Dielectric
θJA
FR4
200°C/W
The start-up speed of the MIC5210 is inversely
proportional to the size of the reference bypass
capacitor. Applications requiring a slow ramp-up of
MSOP Thermal Characteristics
output voltage should consider larger values of CBYP
Likewise, if rapid turn-on is necessary, consider omitting
CBYP
.
For additional heat sink characteristics, please refer to
Micrel Application Hint 17, “Calculating P.C. Board Heat
Sink Area For Surface Mount Packages”.
.
If output noise is not a major concern, omit CBYP and
leave BYPB open.
Thermal Evaluation Examples
For example, at 50°C ambient temperature, the
maximum package power dissipation is:
Output Capacitor
An output capacitor is required between OUT and GND
to prevent oscillation. The minimum size of the output
capacitor is dependent upon whether a reference bypass
capacitor is used. 1.0µF minimum is recommended
when CBYP is not used (see Figure 2). 2.2µF minimum is
recommended when CBYP is 470pF (see Figure 1).
Larger values improve the regulator’s transient
response. The output capacitor value may be increased
without limit.
PD(max) = (125°C – 50°C) / 200°C/W
= 375mW
If the intent is to operate the 5V version from a 6V supply
at the full 150mA load for both outputs in a 50°C
maximum ambient temperature, make the following
calculation:
PD(each regulator) = (VIN – VOUT) × IOUT + (VIN × IGND)
= (6V – 5V) × 150mA + (6V × 2.5mA)
= 165mW
The output capacitor should have an ESR (effective
series resistance) of about 5Ω or less and a resonant
frequency above 1MHz. Ultralow-ESR capacitors may
cause a low-amplitude oscillation and/or underdamped
transient response. Most tantalum or aluminum
electrolytic capacitors are adequate; film types will work,
but are more expensive. Since many aluminum
electrolytic capacitors have electrolytes that freeze at
PD(both regulators) = 2 regulators × 165mW
= 330mW
The actual total power dissipation of 330mW is below
the 375mW package maximum, therefore, the regulator
can be used.
Note that both regulators cannot always be used at their
maximum current rating. For example, in a 5V input to
3.3V output application at 50°C, if one regulator supplies
150mA, the other regulator is limited to a much lower
current. The first regulator dissipates:
about
–30°C,
solid
tantalum
capacitors
are
recommended for operation below –25°C.
At lower values of output current, less output
capacitance is required for output stability. The capacitor
can be reduced to 0.47µF for current below 10mA or
0.33µF for currents below 1mA.
PD = (5V – 3.3V) 150 + 2.5mA (5V)
PD = 267.5mW
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Micrel, Inc.
MIC5210
Then, the load that the remaining regulator can dissipate
must not exceed:
Taking advantage of the extremely low-dropout voltage
characteristics of the MIC5210, power dissipation can be
reduced by using the lowest possible input voltage to
minimize the input-to-output voltage drop.
375mW – 267.5mW = 107.5mW
This means, using the same 5V input and 3.3V output
voltage, the second regulator is limited to about 60mA.
M9999-090806
September 2006
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Micrel, Inc.
MIC5210
Package Information
8-Pin MSOP (MM)
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.
© 2003 Micrel, Incorporated.
M9999-090806
September 2006
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