MICREL MIC5200

MIC5200
Micrel, Inc.
MIC5200
100mA Low-Dropout Regulator
General Description
Features
The MIC5200 is an efficient linear voltage regulator with
very low dropout voltage (typically 17mV at light loads and
200mV at 100mA), and very low ground current (1mA at
100mA output), offering better than 1% initial accuracy with
a logic compatible ON/OFF switching input. Designed especially for hand-held battery powered devices, the MIC5200
is switched by a CMOS or TTL compatible logic signal. The
ENABLE control may be tied directly to VIN if unneeded.
When disabled, power consumption drops nearly to zero.
The ground current of the MIC5200 increases only slightly in
dropout, further prolonging battery life. Key MIC5200 features
include protection against reversed battery, current limiting,
and over-temperature shutdown.
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The MIC5200 is available in several fixed voltages and accuracy configurations. Other options are available; contact
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High output voltage accuracy
Variety of output voltages
Guaranteed 100mA output
Low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Zero OFF mode current
Logic-controlled electronic shutdown
Available in 8-lead SOIC, MM8™ 8-lead MSOP,
and SOT-223 packages
Applications
Micrel for details.
Cellular Telephones
Laptop, Notebook, and Palmtop Computers
Battery Powered Equipment
PCMCIA VCC and VPP Regulation/Switching
Bar Code Scanners
SMPS Post-Regulator/ DC to DC Modules
High Efficiency Linear Power Supplies
Typical Application
MIC5200-3.3
Output
1µF
Enable
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-040805
1
April 2005
MIC5200
Micrel, Inc.
Ordering Information
Part Number
Voltage
Accuracy
Junction Temp. Range*
Package
Standard
Pb-Free
MIC5200-3.0BM
MIC5200-3.0YM
3.0
1%
-40°C to +125°C
8-Pin SOIC
MIC5200-3.3BM
MIC5200-3.3YM
3.3
1%
-40°C to +125°C
8-Pin SOIC
MIC5200-4.8BM
MIC5200-4.8YM
4.8
1%
-40°C to +125°C
8-Pin SOIC
MIC5200-5.0BM
MIC5200-5.0YM
5.0
1%
-40°C to +125°C
8-Pin SOIC
MIC5200-3.3BMM
MIC5200-3.3YMM
3.3
1%
-40°C to +125°C
8-Pin MSOP
MIC5200-5.0BMM
MIC5200-5.0YMM
5.0
1%
-40°C to +125°C
8-Pin MSOP
MIC5200-3.0BS
MIC5200-3.0YS
3.0
1%
-40°C to +125°C
3-lead SOT-223
MIC5200-3.3BS
MIC5200-3.3YS
3.3
1%
-40°C to +125°C
3-lead SOT-223
MIC5200-4.8BS
MIC5200-4.8YS
4.8
1%
-40°C to +125°C
3-lead SOT-223
MIC5200-5.0BS
MIC5200-5.0YS
5.0
1%
-40°C to +125°C
3-lead SOT-223
* Other voltage options available. Contact Micrel Marketing for information.
Pin Configuration
OUT
OUT
NC
GND
1
IN
2
3
GND OUT
IN
IN
NC
EN
MIC5200-x.xBM
(SOIC-8)
MIC5200-x.xBM
(MSOP-8)
MIC5200-x.xBS
(SOT-223)
EN may be tied directly to VIN
Pin Description
Pin Number
SOT-223
Pin Number
SO-8, MSOP-8
Pin Name
3
1, 2
OUT
3, 6
NC
4
GND
5
EN
Enable/Shutdown (Input): TTL compatible input. High = enabled;
low = shutdown.
7, 8
IN
Supply Input: Pins 7 and 8 must be extenally connected together.
2, TAB
1
April 2005
Pin Function
Output: Pins 1 and 2 must be externally connected together.
(not internally connected): Connect to ground plane for lowest thermal resistance.
Ground: Ground pin and TAB are internally connected.
2
M9999-040805
MIC5200
Micrel, Inc.
Absolute Maximum Ratings
Recommended Operating Conditions
Input Voltage ................................................................2.5V to 26V
Operating Junction Temperature Range.............. –40°C to +125°C
Enable Input Voltage .....................................................–20V to VIN
Power Dissipation ................................................ Internally Limited
Lead Temperature (soldering, 5 sec.) ....................................260°C
Operating Junction Temperature Range.............. –40°C to +125°C
Input Supply Voltage .................................................–20V to +60V
Enable Input Voltage .................................................–20V to +60V
Thermal Characteristics
SOT-223 (θJC) ..................................................................... 15°C/W
SO-8 (θJA) ......................................................................See Note 1
Absolute Maximum Ratings indicate limits beyond which damage
to the device may occur. Electrical specifications do not apply when
operating the device beyond its specified Operating Ratings.
Electrical Characteristics
Limits in standard typeface are for TJ = 25°C and limits in boldface apply over the junction temperature range of –40°C to +125°C. Unless otherwise specified, VIN = VOUT + 1V, IL = 1mA, CL = 3.3µF, and VENABLE ≥ 2.0V
Symbol
Parameter
Conditions
Min
VO
Output Voltage
Accuracy
Variation from specified VOUT
∆VO
∆T
Output Voltage
Temperature Coef.
(Note 2)
∆VO
VIN
Line Regulation
∆VO
VOUT
Typical
–1
–2
Max
Units
1
2
%
40
150
VIN = VOUT + 1 V to 26V
0.004
0.10
0.40
%
Load Regulation
IL = 0.1mA to 100mA (Note 3)
0.04
0.16
0.30
%
VIN – VO
Dropout Voltage
(Note 4)
IL = 100µA
IL = 20mA
IL = 30mA
IL = 50mA
IL = 100mA
17
130
150
190
230
350
IGND
Quiescent Current
VENABLE ≤ 0.7V (Shutdown)
0.01
10
IGND
Ground Pin Current
VENABLE ≥ 2.0V, IL = 100µA
IL = 20mA
IL = 30mA
IL = 50mA
IL = 100mA
130
270
330
500
1000
PSRR
Ripple Rejection
IGNDDO
Ground Pin
Current at Dropout
ILIMIT
Current Limit
VOUT = 0V
∆VO
∆PD
Thermal Regulation
(Note 6)
en
Output Noise
mV
µA
350
270
100
µA
1500
70
VIN = 0.5V less than specified VOUT
IL = 100µA (Note 5)
ppm/°C
dB
330
µA
250
mA
0.05
%/W
100
µV
ENABLE Input
VIL
IIL
IIH
M9999-040805
Input Voltage Level
Logic Low
Logic High
ENABLE Input Current
OFF
ON
2.0
VIL ≤ 0.7V
VIH ≥ 2.0V
0.01
15
3
0.7
V
1
50
µA
April 2005
MIC5200
Micrel, Inc.
Note 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 rated operating conditions. 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: P(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 θJC of the MIC5200-xxBS is 15°C/W and θJA for the MIC5200BM is 160°C/W mounted on a PC
board (see “Thermal Considerations” section for further details).
Note 2:
Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature
range.
Note 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 100mA. Changes in output voltage due to heating effects are covered by the thermal
regulation specification.
Note 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.
Note 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.
Note 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 100mA load pulse at VIN = 26V for t = 10ms.
April 2005
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M9999-040805
MIC5200
Micrel, Inc.
Typical Characteristics
DROPOUT VOLTAGE (V)
0.1
0.01
Ground Current
vs. Temperature
GROUND CURRENT (mA)
0.30
ILOAD = 100µA
CIN = 2.2µF
COUT = 4.7µF
0.25
0.20
3.4
3.3
3.2
3 DEV IC ES :
HI / AVG / LO
3.1
CURVES APPLICABLE
AT 100µA AND 100mA
3.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
M9999-040805
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
CIN = 2.2µF
COUT = 4.7µF
0.4
IL = 1mA
0.2
0
1.4
1.3
2
4
6
8
SUPPLY VOLTAGE (V)
Ground Current
vs. Temperature
ILOAD = 100mA
CIN = 2.2µF
COUT = 4.7µF
1.1
300
280
260
240
220
200
180
160
140
0
50
100
TEMPERATURE (°C)
150
1.5
1.0
IL = 100µA,1mA
0.5
0
2
4
6
8
INPUT VOLTAGE (V)
VOUT = 3.3V
VOUT = 0V
(SHORT CIRCUIT)
120
100
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
10
Output Voltage
vs. Output Current
3.0
CIN = 2.2µF
COUT = 4.7µF
2.5
2.0
1.5
1.0
0.5
100
0.1
0.2
OUTPUT CURRENT (A)
0.3
Thermal Regulation
(3.3V Version)
50
0
CL = 4.7 µF
200
-50
100
0
-100
-5
Output Current
vs. Temperature
5
2.0
0.0
0.0
10
1.2
1.0
-50
Output Voltage vs. Temp.
(3.3V Version)
3.5
0.6
1.5
0.15
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
3.6
0.8
0.0
0.1
1
10
100
OUTPUT CURRENT (mA)
IL = 100mA
1.0
IL = 100mA
2.5
3.5
1.4
1.2
3.0
0.0
Ground Current
vs. Supply Voltage
1.6
GROUND CURRENT (mA)
GROUND CURRENT (mA)
1
IL = 1mA
0.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
0.1
1
10
100 1000
OUTPUT CURRENT (mA)
Ground Current
vs. Output Current
10
0.1
OUTPUT VOLTAGE (V)
0
0.01
0.2
∆ OUTPUT (mV)
50
IL = 100mA
LOAD (mA)
100
0.3
Dropout
Characteristics
3.5
MIN. INPUT VOLTAGE (V)
150
GROUND CURRENT (mA)
DROPOUT VOLTAGE (mV)
200
Dropout Voltage
vs. Temperature
0.4
OUTPUT VOLTAGE (V)
Dropout Voltage
vs. Output Current
250
3.30
3.29
3.28
3.27
3.26
3.25
0
5 10 15 20 25 30 35
TIME (ms)
Minimum Input Voltage
vs. Temperature
CIN = 2.2µF
COUT = 4.7µF
ILOAD = 1mA
3.24
3.23
3.22
3.21
3.20
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
April 2005
Micrel, Inc.
1
2
3
4
5
6
INPUT VOLTAGE (V)
100
0
-2
Supply Current vs. Supply
Voltage (3.3V Version)
80
60
0
ENABLE (V)
30
RL = 66Ω
20
10
1000
100
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
Output Impedance
IL = 100µA
10
IL = 1mA
1
0.1
0.01
FREQUENCY (Hz)
1x106
100x103
10x103
100x100
10x100
1x100
IL = 100mA
INPUT (V)
0.2
0.4
TIME (ms)
0.6
CL = 4.7 µF
IL = 1mA
2
0
25
0
Enable Current Threshold
vs. Temperature
CIN = 2.2µF
COUT = 4.7µF
20
VE N = 5V
10
5
0
VE N = 2V
-5
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
6
10
20
TIME (ms)
30
40
Line Transient
CL = 10 µF
IL = 1mA
5
0
-5
8
6
4
0.1 0.2 0.3 0.4 0.5 0.6
TIME (ms)
Enable Transient
(3.3V Version)
5
4
3
2
1
0
-1
4
CL = 4.7 µF
IL = 100mA
2
0
-2
-50
50 100 150 200 250 300
TIME (µs)
15
0
2
-0.1 0
0.8
Enable Transient
(3.3V Version)
5
4
3
2
1
0
-1
4
30
0
-10
10
4
35
100
15
6
-2
-50
7
ENABLE CURRENT (µA)
0
200
10
-5
0
CL = 47µF
-20
300
-30
ENABLE (V)
OUTPUT (V)
Supply Current vs. Supply
Voltage (3.3V Version)
40
April 2005
8
CL = 1 µF
IL = 1mA
5
2
-0.2
0 1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
50
0.001
2
4
6
TIME (ms)
0
-10
Line Transient
10
INPUT (V)
RL = 33Ω
20
0
0
-10
8
40
SUPPLY CURRENT (mA)
200
7
100
60
-20
-30
300
∆ OUTPUT (mV)
0
OUTPUT (mA) ∆ OUTPUT (mV)
50
CL = 4.7µF
∆ OUTPUT (mV)
CIN = 2.2µF
COUT = 4.7µF
VOUT = 3.3V
100
0
-10
Load Transient
20
10
OUTPUT (V)
150
Load Transient
20
10
1.6
ENABLE VOLTAGE (V)
200
0
OUTPUT IMPEDANCE (Ω)
OUTPUT (mA) ∆ OUTPUT (mV)
250
120
SUPPLY CURRENT (mA)
Short Circuit Current
vs. Input Voltage
300
1x103
SHORT CIRCUIT CURRENT (mA)
MIC5200
1.4
1.2
0
50 100 150 200 250 300
TIME (µs)
Enable Voltage Threshold
vs. Temperature
CIN = 2.2µF
COUT = 4.7µF
1
0.8
ON
OFF
0.6
0.4
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
M9999-040805
MIC5200
Micrel, Inc.
M9999-040805
7
IL = 100mA
60
40
1x106
100x103
10x103
0
1x103
20
100x100
FREQUENCY (Hz)
1x106
0
10x103
20
Ripple
vs. Frequency
80
10x100
40
100x103
FREQUENCY (Hz)
1x106
100x103
10x103
10x100
0
1x103
20
60
1x103
40
IL = 1mA
100x100
60
100
80
10x100
IL = 100µA
Ripple
vs. Frequency
RIPPLE VOLTAGE (dB)
100
RIPPLE VOLTAGE (dB)
80
100x100
RIPPLE VOLTAGE (dB)
100
Ripple
vs. Frequency
FREQUENCY (Hz)
April 2005
MIC5200
Micrel, Inc.
Applications Information
Thermal Considerations
Part I. Layout
External Capacitors
The MIC5200-xxBM (8-pin surface mount package) has the
following thermal characteristics when mounted on a single
layer copper-clad printed circuit board.
A 1µF capacitor is recommended between the MIC5200 output
and ground to prevent oscillations due to instability. Larger
values serve to improve the regulator’s transient response.
Most types of tantalum or aluminum electrolytics will be adequate; film types will work, but are costly and therefore not
recommended. Many aluminum electrolytics have electrolytes
that freeze at about –30°C, so solid tantalum capacitors are
recommended for operation below –25°C. The important parameters of the capacitor are an effective series resistance
of about 5Ω or less and a resonant frequency above 500kHz.
The value of this capacitor may be increased without limit.
PC Board
Dielectric
FR4
Ceramic
θJA
160°C/W
120°C/W
Multi-layer boards having a ground plane, wide traces near
the pads, and large supply bus lines provide better thermal
conductivity.
The “worst case” value of 160°C/W assumes no ground plane,
minimum trace widths, and a FR4 material board.
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
1 mA. A 1µF capacitor should be placed from the MIC5200
input to ground 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.
Part II. Nominal Power Dissipation and Die Temperature
The MIC5200-xxBM at a 25°C ambient temperature will operate reliably at up to 625mW power dissipation when mounted
in the “worst case” manner described above. At an ambient
temperature of 55°C, the device may safely dissipate 440mW.
These power levels are equivalent to a die temperature of
125°C, the recommended maximum temperature for nonmilitary grade silicon integrated circuits.
The MIC5200 will remain stable and in regulation with no load
in addition to the internal voltage divider, unlike many other
voltage regulators. This is especially important in CMOS RAM
keep-alive applications.
For MIC5200-xxBS (SOT-223 package) heat sink characteristics, please refer to Micrel Application Hint 17, “Calculating
P.C. Board Heat Sink Area for Surface Mount Packages”.
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.
ENABLE Input
50 mil
The MIC5200 features nearly zero OFF mode current. When
the ENABLE input is held below 0.7V, all internal circuitry is
powered off. Pulling this pin high (over 2.0V) re-enables the
device and allows operation. The ENABLE pin requires a small
amount of current, typically 15µA. While the logic threshold is
TTL/CMOS compatible, ENABLE may be pulled as high as
30V, independent of the voltage on VIN.
150 mil
245 mil
30 mil
50 mil
Minimum recommended board pad size, SO-8.
April 2005
8
M9999-040805
MIC5200
Micrel, Inc.
Package Information
8-Pin SOIC (M)
0.122 (3.10)
0.112 (2.84)
0.199 (5.05)
0.187 (4.74)
DIMENSIONS:
INCH (MM)
0.120 (3.05)
0.116 (2.95)
0.036 (0.90)
0.032 (0.81)
0.043 (1.09)
0.038 (0.97)
0.012 (0.30) R
0.012 (0.3)
0.0256 (0.65) TYP
0.008 (0.20)
0.004 (0.10)
5 MAX
0 MIN
0.007 (0.18)
0.005 (0.13)
0.012 (0.03) R
0.039 (0.99)
0.035 (0.89)
0.021 (0.53)
8-Lead MSOP (MM)
M9999-040805
9
April 2005
MIC5200
Micrel, Inc.
3.15 (0.124)
2.90 (0.114)
CL
3.71 (0.146) 7.49 (0.295)
3.30 (0.130) 6.71 (0.264)
CL
2.41 (0.095)
2.21 (0.087)
1.04 (0.041)
0.85 (0.033)
4.7 (0.185)
4.5 (0.177)
0.10 (0.004)
0.02 (0.0008)
DIMENSIONS:
MM (INCH)
6.70 (0.264)
6.30 (0.248)
1.70 (0.067)
16°
1.52 (0.060)
10°
10°
MAX
0.38 (0.015)
0.25 (0.010)
0.84 (0.033)
0.64 (0.025)
0.91 (0.036) MIN
SOT-223 (S)
MICREL INC.
TEL
2180 FORTUNE DRIVE
+ 1 (408) 944-0800
FAX
SAN JOSE, CA 95131
+ 1 (408) 474-1000
WEB
USA
http://www.micrel.com
This 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.
© 1998 Micrel Incorporated
April 2005
10
M9999-040805