MIC5206YMMTR [MICROCHIP]
ADJUSTABLE POSITIVE LDO REGULATOR, 0.35V DROPOUT, PDSO8, LEAD FREE, MSOP-8;
| 型号： | MIC5206YMMTR |
| 厂家： | 
MICROCHIP |
| 描述： | ADJUSTABLE POSITIVE LDO REGULATOR, 0.35V DROPOUT, PDSO8, LEAD FREE, MSOP-8 光电二极管 |
| 文件： | 总11页 (文件大小：248K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5206
150mA Low-Noise LDO Regulator
General Description
Features
The MIC5206 is an efficient linear voltage regulator with
very low dropout voltage (typically 17mV at light loads and
165mV at 150mA), and very low ground current (600µA at
100mA output), with better than 1% initial accuracy. It has
a logic compatible enable/shutdown control input and an
internal undervoltage monitor.
• Error flag indicates undervoltage fault
• High output voltage accuracy
• Guaranteed 150mA output
• Ultra-low-noise output (8-pin versions)
• Low quiescent current
• Low dropout voltage
Designed especially for hand-held, battery-powered
devices, the MIC5206 can be switched by a CMOS or TTL
compatible logic signal. When disabled, power
consumption drops nearly to zero. Dropout ground current
is minimized to prolong battery life.
• Extremely tight load and line regulation
• Very low temperature coefficient
• Current and thermal limiting
• Reversed-battery protection
• “Zero” off-mode current
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
Applications
The MIC5206 is available in several fixed voltages in a tiny
SOT-23-5 package. It features a pinout, similar to the
LP2980, but has significantly better performance. Fixed
and adjustable output voltage versions, featuring the
reference bypass option, are available in the 8-pin Micrel
Mini 8™ 8-pin MSOP (micro small-outline package).
• Cellular telephones
• Laptop, notebook, and palmtop computers
• Battery-powered equipment
• PCMCIA VCC and VPP regulation/switching
• Consumer/personal electronics
• SMPS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies
For low-dropout regulators that are stable with ceramic
output capacitors, see the µCap MIC5245/6/7 family.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Typical Application
SOT-23-5 Fixed Voltage Application
Adjustable Voltage Application
Micrel Mini 8 is a trademark 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
M9999-051506
(408) 955-1690
May 2006
Micrel, Inc.
MIC5206
Ordering Information
Part Number
Marking Pb-Free
Voltage*
2.5V
2.7V
3.0V
3.2V
3.3V
3.6V
3.8V
4.0V
5.0V
ADJ
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
–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
–40° to +125°C
Package
Standard
Marking
LD25
LD27
LD30
LD32
LD33
LD36
LD38
LD40
LD50
MIC5206-2.5BM5
MIC5206-2.7BM5
MIC5206-3.0BM5
MIC5206-3.2BM5
MIC5206-3.3BM5
MIC5206-3.6BM5
MIC5206-3.8BM5
MIC5206-4.0BM5
MIC5206-5.0BM5
MIC5206BMM
LD25
LD27
LD30
LD32
LD33
LD36
LD38
LD40
LD50
MIC5206-2.5YM5
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
MIC5206-2.7YM5
MIC5206-3.0YM5
MIC5206-3.2YM5
MIC5206-3.3YM5
MIC5206-3.6YM5
MIC5206-3.8YM5
MIC5206-4.0YM5
MIC5206-5.0YM5
MIC5206YMM
MIC5206-3.0BMM
MIC5206-3.3BMM
MIC5206-3.6BMM
MIC5206-3.8BMM
MIC5206-4.0BMM
MIC5206-5.0BMM
MIC5206-3.0YMM
MIC5206-3.3YMM
MIC5206-3.6YMM
MIC5206-3.8YMM
MIC5206-4.0YMM
MIC5206-5.0YMM
3.0V
3.3V
3.6V
3.8V
4.0V
5.0V
* Other voltages available. Contact Micrel for details.
M9999-051506
(408) 955-1690
May 2006
2
Micrel, Inc.
MIC5206
Pin Configuration
MIC5206-xxBM5/YM5
(Fixed Output Voltage)
MIC5206-xxBMM/YMM
(Fixed Output Voltage)
MIC5206-BMM/YMM
(Adjustable Output Voltage)
Pin Description
Pin Number
SOT-23-5
Pin Number
MSOP-8
Pin Name Pin Function
1
2
3
8
4, 6
7
IN
GND
EN
Supply Input
Ground
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable,
logic low or open = shutdown. Do not leave floating.
4
5
3
FLAG
BYP
ADJ
Error Flag (Output): Open-collector output. Active low indicates an output
undervoltage condition
5 (fixed)
5 (adj.)
1, 2
Reference Bypass: Connect external 470pF capacitor to GND to reduce output
noise. May be left open
Adjust (Input): Adjustable regulator feedback input. Connect to resistor voltage
divider.
OUT
Regulator Output
M9999-051506
(408) 955-1690
May 2006
3
Micrel, Inc.
MIC5206
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Input Voltage (VIN).............................. –20V to +20V
Enable Input Voltage (VEN)............................. –20V to +20V
Power Dissipation (PD)..........................Internally Limited (3)
Junction Temperature (TJ) ........................–40°C to +125°C
Lead Temperature (soldering, 5 sec)......................... 260°C
Supply Input Voltage (VIN)............................. +2.5V to +16V
Enable Input Voltage (VEN)..................................... 0V to VIN
Junction Temperature ...............................–40°C to +125°C
SOT-23-5 (θJA) (3)
MSOP-8 (θJA) (3)
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 nominal VOUT
–1
–2
1
2
%
%
∆VO/∆T
Output Voltage Temperature
Coefficient
Note 4
40
ppm/°C
∆VO/VO
∆VO/VO
VIN – VO
Line Regulation
VIN = VOUT + 1V to 16V
IL = 0.1mA to 150mA, Note 5
IL = 100µA
Load Regulation
Dropout Voltage, Note 6
17
50
70
mV
mV
mV
mV
mV
mV
mV
mV
IL = 50mA
IL = 100mA
IL = 150mA
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 7
V
EN ≥ 2.0V, IL = 100µA
80
350
600
1300
125
150
600
µA
µA
µA
µA
µA
µA
µA
µA
IL = 50mA
IL = 100mA
IL = 150mA
800
1000
1500
1900
2500
PSRR
ILIMIT
Ripple Rejection
Current Limit
75
dB
mA
VOUT = 0V
320
0.05
500
∆VO/∆PD
Thermal Regulation
Note 8
%/W
eno
Output Noise
IL = 50mA, CL = 4.7µF, 470pF from BYP to
GND (MM package only)
260
nV√Hz
Enable Input
VIL
Enable Input Logic-Low Voltage Regulator shutdown
0.4
0.18
V
V
VIH
Enable Input Logic-High
Voltage
Regulator enable
2.0
V
IIL
Enable Input Current
VIL ≤ 0.4V
VIL ≤ 0.18V
0.01
5
–1
–2
20
25
µA
µA
µA
µA
IIH
V
IH ≥ 2.0V
VIH ≥ 2.0V
M9999-051506
(408) 955-1690
May 2006
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Micrel, Inc.
MIC5206
Symbol
Parameter
Condition
Min
Typ
Max
Units
Error Flag Output
VERR
Flag Threshold
Undervoltage condition (below nominal)
–2
–6
–10
%
Note 9
VOL
IFL
Output Logic-Low Voltage
Flag Leakage Current
IL = 1mA, undervoltage condition
Flag off, VFLAG = 0V to 16V
0.2
0.1
0.4
V
–1
+1
µA
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 at 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. The θJA of theMIC5205-x.xBM5 (all versions) is
220°C/W, and the MIC5206-x.xBMM (all versions) is 200°C/W, mounted on a PC board (see “Thermal Considerations” for further details).
4. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
5. 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.
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.
7. 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.
8. 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.
9. The error flag comparator includes 3% hysteresis.
M9999-051506
(408) 955-1690
May 2006
5
Micrel, Inc.
MIC5206
Typical Characteristics
Power Supply
Power Supply
Power Supply Ripple Rejection
vs. Voltage Drop
Rejection Ratio
Rejection Ratio
0
0
-20
60
50
40
30
20
10
0
VIN = 6V
VIN = 6V
VOUT = 5V
VOUT = 5V
-20
-40
1mA
-40
10mA
IOUT = 100mA
COUT = 1µF
-60
-60
IOUT = 100µA
COUT = 2.2µF
-80
-80
IOUT = 100µA
COUT = 1µF
CBYP = 0.01µF
-100
-100
1E+11E+21E+31E+41E+51E+6 E+7
1E+11E+21E+31E+41E+51E+6 E+7
1k 10k 1M
10 100k 10M
100
1k 10k
FREQUENCY (Hz)
1M
10
100k
10M
0
0.1
0.2
0.3
0.4
100
FREQUENCY (Hz)
VOLTAGE DROP (V)
Power Supply
Power Supply
Power Supply Ripple Rejection
vs. Voltage Drop
Rejection Ratio
Rejection Ratio
0
0
100
VIN = 6V
OUT = 5V
VIN = 6V
VOUT = 5V
90
80
70
60
50
40
30
20
10
0
V
-20
-40
-20
-40
1mA
IOUT = 100mA
-60
-60
10mA
IOUT = 1mA
COUT = 2.2µF
COUT = 2.2µF
CBYP = 0.01µF
-80
-80
IOUT = 1mA
COUT = 1µF
CBYP = 0.01µF
-100
-100
1E+11E+21E+31E+41E+51E+6 E+7
1E+11E+21E+31E+41E+51E+6 E+7
1k 10k 1M
10 100k 10M
100
1k 10k
FREQUENCY (Hz)
1M
10
100k
10M
0
0.1
0.2
0.3
0.4
100
FREQUENCY (Hz)
VOLTAGE DROP (V)
Power Supply
Power Supply
Turn-On Time
vs. Bypass Capacitance
Rejection Ratio
Rejection Ratio
0
0
10000
1000
100
VIN = 6V
OUT = 5V
VIN = 6V
VOUT = 5V
V
-20
-40
-20
-40
-60
-60
IOUT = 10mA
COUT = 2.2µF
BYP = 0.01µF
-80
-80
IOUT = 10mA
OUT = 1µF
C
C
-100
-100
10
1E+11E+21E+31E+41E+51E+6 E+7
1E+11E+21E+31E+41E+51E+6 E+7
1k 10k 1M
10 100k 10M
100
1k 10k
1M
10
100k
10M
10
100
1000
10000
100
FREQUENCY (Hz)
FREQUENCY (Hz)
CAPACITANCE (pF)
Power Supply
Power Supply
Rejection Ratio
Rejection Ratio
Noise Performance
0
0
10
1
VIN = 6V
VOUT = 5V
VIN = 6V
VOUT = 5V
10mA, COUT = 1µF
-20
-40
-20
-40
0.1
1mA
COUT = 1µF
C
BYP = 10nF
-60
-60
0.01
0.001
0.0001
IOUT = 100mA
OUT = 2.2µF
CBYP = 0.01µF
IOUT = 100mA
OUT = 1µF
-80
-80
C
C
VOUT = 5V
-100
-100
1E+11E+21E+31E+41E+51E+6 E+7
1E+11E+21E+31E+41E+51E+6 E+7
1k 10k 1M
10 100k 10M
100
1k 10k
1M
10
100k
FREQUENCY (Hz)
10M
1E+11E+21E+31E+41E+51E+61E+7
10
100
1k
100
10k 100k 1M 10M
FREQUENCY (Hz)
FREQUENCY (Hz)
M9999-051506
(408) 955-1690
May 2006
6
Micrel, Inc.
MIC5206
Typical Characteristics
Noise Performance
Noise Performance
Noise Performance
10
10
1
10
1
1
0.1
100mA
10mA
100mA
10mA
0.1
0.1
100mA
0.01
0.01
0.001
0.0001
0.01
0.001
0.0001
1mA
10mA
VOUT = 5V
COUT = 10µF
electrolytic
CBYP = 100pF
VOUT = 5V
OUT = 22µF
tantalum
CBYP = 10nF
VOUT = 5V
1mA
C
1mA
0.001
0.0001
COUT = 10µF
electrolytic
1E+11E+21E1k+31E+41E+51E+61E+7
10 10k 100k 1M 10M
1E+11E+21E1k+31E+41E+51E+61E+7
10 10k 100k 1M 10M
1E+11E+21E1k+31E+41E+51E+61E+7
10 10k 100k 1M 10M
100
FREQUENCY (Hz)
100
FREQUENCY (Hz)
100
FREQUENCY (Hz)
Dropout Voltage
vs. Output Current
Noise Performance
Noise Performance
10
10
320
280
240
200
160
120
80
1
0.1
1
0.1
10mA
10mA
+125°C
+25°C
100mA
100mA
0.01
0.01
1mA
1mA
VOUT = 5V
COUT = 10µF
electrolytic
CBYP = 1nF
VOUT = 5V
COUT = 10µF
electrolytic
CBYP = 1nF
–40°C
0.001
0.001
40
0.0001
0.0001
0
1E+11E+21E1k+31E+41E+51E+61E+7
10 10k 100k 1M 10M
1E+11E+21E1k+31E+41E+51E+61E+7
10 10k 100k 1M 10M
0
40
80
120
160
100
FREQUENCY (Hz)
100
FREQUENCY (Hz)
OUTPUT CURRENT (mA)
M9999-051506
(408) 955-1690
May 2006
7
Micrel, Inc.
MIC5206
No-Load Stability
Application Information
The MIC5205 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 (enable) to IN (supply input). Refer to the text with
Figures 1aand 2.
Error Flag Output
The error flag is an open-collector output and is active
(low) when an undervoltage of approximately 5% below
the nominal output voltage is detected. A pull-up resistor
from IN to FLAG is shown in all schematics.
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.
If an error indication is not required, FLAG may be left
open and the pull-up resistor may be omitted.
Enable Pin Ramp and the Error Flag
Reference Bypass Capacitor
To prevent indeterminate behavior on the error flag
during power down of the device, ensure that the fall
time of the enable pin signal, from logic high to logic low,
is faster than 100µs.
BYP (reference bypass) is connected to the internal
voltage reference. A 470pF capacitor (CBYP) connected
from BYP to GND quiets this reference, providing a
significant reduction in output noise. See Figure 2. CBYP
Fixed Regulator Applications
reduces the regulator phase margin; when using CBYP
,
output capacitors of 2.2µF or greater are generally
required to maintain stability.
The start-up speed of the MIC5206 is inversely
proportional to the size of the reference bypass
capacitor. Applications requiring a slow ramp-up of
output voltage should consider larger values of CBYP
Likewise, if rapid turn-on is necessary, consider omitting
CBYP
.
.
If output noise is not a major concern, omit CBYP and
leave BYP open.
Figure 1a. Low-Noise Fixed Voltage Application
EN (pin 3) is shown connected to IN (pin 1) for an
application where enable/shutdown is not required. The
error flag is shown with a 100kΩ pull-up resistor.
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 2).
Larger values improve the regulator’s transient
response. The output capacitor value may be increased
without limit.
The output capacitor should have an ESR (effective
series resistance) of about 5Ω or less and a resonant
frequency above 1MHz. Most tantalum or aluminum
electrolytic capacitors are adequate; film types will work,
but are more expensive. Since many aluminum
electrolytics have electrolytes that freeze at about
–30°C, solid tantalums are recommended for operation
below –25°C.
Figure 1b. Low-Noise Fixed Voltage Application
Figure 1b is an example of a basic configuration where
the lowest-noise operation is not required. COUT = 1µF
minimum. The error flag is shown with a 47kΩ pull-up
resistor.
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.
M9999-051506
(408) 955-1690
May 2006
8
Micrel, Inc.
MIC5206
Ultra-Low-Noise Application
Thermal Considerations
Layout
The MIC5206-x.xBM5 (5-pin SOT-23 package) has the
following thermal characteristics when mounted on a
single layer copper-clad printed circuit board.
Multilayer boards having a ground plane, wide traces
near the pads, and large supply bus lines provide better
thermal conductivity.
PC Board
Dielectric
θJA
Figure 2. Ultra-Low-Noise Fixed Voltage Application
FR4
220°C/W
200°C/W
Figure 2 includes a 470pF capacitor for low-noise
operation and shows EN (pin 7) connected to IN (pin 8)
for an application where enable/shutdown is not
required. The error flag is shown with a 47kΩ pull-up
resistor.
Ceramic
SOT-23-5 Thermal Characteristics
The “worst case” value of 220°C/W assumes no ground
plane, minimum trace widths, and a FR4 material board.
Adjustable Regulator Applications
Figure 3 shows the MIC5206BMM adjustable output
voltage configuration. Two resistors set the output
voltage. The formula for output voltage is:
The MIC5206-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.
R2
R1
⎛
⎜
⎞
VOUT = 1.242V ×
+ 1
⎟
PC Board
Dielectric
θJA
⎝
⎠
Resistor values are not critical because ADJ (adjust) has
a high input impedance, but for best results use resistors
of 470kΩ or less. A capacitor from ADJ to ground
provides greatly improved noise performance.
FR4
200°C
MSOP Thermal Characteristics
Nominal Power Dissipation and Die Temperature
The MIC5206-x.xBM5 at a 25°C ambient temperature
will operate reliably at over 450mW power dissipation
when mounted in the “worst case” manner described
above. At an ambient temperature of 40°C, the device
may safely dissipate over 380mW. These power levels
are equivalent to a die temperature of 125°C, the
maximum operating junction temperature for the
MIC5206.
For additional heat sink characteristics, please refer to
Micrel Application Hint 17, “Calculating P.C. Board Heat
Sink Area For Surface Mount Packages”.
Figure 3. Ultra-Low-Noise Adjustable Voltage Application
Figure 3 also includes a 470pF capacitor for lowest-
noise operation and shows EN (pin 7) connected to IN
(pin 8) for an application where enable/shutdown is not
required. COUT = 2.2µF minimum. The error flag is shown
with a 47kΩ pull-up resistor.
M9999-051506
(408) 955-1690
May 2006
9
Micrel, Inc.
MIC5206
Package Information
5-Pin SOT-23 (M5)
8-Pin MSOP (MM)
M9999-051506
(408) 955-1690
May 2006
10
Micrel, Inc.
MIC5206
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.
© 2000 Micrel, Incorporated.
M9999-051506
(408) 955-1690
May 2006
11
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