MIC5213-2.8BC5TR [MICROCHIP]
Fixed Positive LDO Regulator, 2.8V, 0.6V Dropout, PDSO5, SC-70, 5 PIN;
| 型号： | MIC5213-2.8BC5TR |
| 厂家： | 
MICROCHIP |
| 描述： | Fixed Positive LDO Regulator, 2.8V, 0.6V Dropout, PDSO5, SC-70, 5 PIN 光电二极管 |
| 文件： | 总8页 (文件大小：50K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5213
Teeny™ SC-70 µCap Low-Dropout Regulator
Final Information
General Description
Features
The MIC5213 is a µCap 80mA linear voltage regulator in the
Teeny™ SC-70 package. Featuring half the footprint of the
standard SOT-23 package, this Teeny™ SC-70 regulator
has very low dropout voltage (typically 20mV at light loads
and 300mV at 80mA) and very low ground current (225µA at
20mA output). It also offers better than 3% initial accuracy
and includes a logic-compatible enable input.
• Teeny™ SC-70 package
• Wide selection of output voltages
• Guaranteed 80mA output
• Low quiescent current
• Low dropout voltage
• Tight load and line regulation
• Low temperature coefficient
• Current and thermal limiting
• Reversed input polarity protection
• Zero off-mode current
The µCap regulator design is optimized to work with low-
value, low-cost ceramic capacitors. The outputs typically
require only 0.47µF of output capacitance for stability.
• Logic-controlled shutdown
• Stability with low ESR ceramic capacitors
Designedespeciallyforhand-held,battery-powereddevices,
theMIC5213canbecontrolledbyaCMOSorTTLcompatible
logicsignal.Whendisabled,powerconsumptiondropsnearly
to zero. If on-off control is not required, the enable pin may be
tied to the input for 3-terminal operation. The ground current
of the MIC5213 increases only slightly in dropout, further
prolongingbatterylife. KeyMIC5213featuresincludecurrent
limiting, overtemperature shutdown, and protection against
reversed battery.
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
The MIC5213 is available in 2.5V, 2.6V, 2.7V, 2.8V, 3.0V,
3.3V, 3.6V, and 5.0V fixed voltages. Other voltages are
available; contact Micrel for details.
Ordering Information
Part Number
Marking
Standard Pb-Free
Voltage Junction Temp. Range
Package
Standard
Pb-Free
MIC5213-2.5BC5 MIC5213-2.5YC5
MIC5213-2.6BC5 MIC5213-2.6YC5
MIC5213-2.7BC5 MIC5213-2.7YC5
MIC5213-2.8BC5 MIC5213-2.8YC5
MIC5213-3.0BC5 MIC5213-3.0YC5
MIC5213-3.3BC5 MIC5213-3.3YC5
MIC5213-3.6BC5 MIC5213-3.6YC5
MIC5213-5.0BC5 MIC5213-5.0YC5
LAM
LAQ
LAL
LAJ
LAM
LAQ
LAL
LAJ
2.5V
2.6V
2.7V
2.8V
3.0V
3.3V
3.6V
5.0V
–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
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
LAG
LAE
LAD
LAB
LAG
LAE
LAD
LAB
Other voltages available. Contact Micrel for details.
Typical Applications
1
2
3
5
4
Enable
Shutdown
VOUT
0.47µF
Regulator Circuit
Teeny is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000• http://www.micrel.com
August 2004
1
MIC5213
MIC5213
Micrel
Pin Configuration
GND NC EN
3
2
1
LAx
4
5
OUT
IN
SC-70-5 (C5)
Pin Description
Pin Number
Pin Name
Pin Function
1
EN
Enable (Input): TTL/CMOS compatible control input. Logic high = enabled;
logic low or open = shutdown.
2
3
4
5
NC
GND
OUT
IN
Not internally connected.
Ground
Regulator Output
Supply Input
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 2)
Input Supply Voltage (V ) ............................ –20V to +20V
Input Voltage (V ) ........................................... 2.5V to 16V
IN
IN
Enable Input Voltage (V ) ........................... –20V to +20V
Enable Input Voltage (V ) .................................. 0V to V
IN
EN
EN
Power Dissipation (P ) ............................ Internally Limited
Junction Temperature Range................... –40°C to +125°C
D
Storage Temperature Range (T ) ............ –60°C to +150°C
Thermal Resistance (θ )......................................... Note 4
S
JA
Lead Temperature (Soldering, 5 sec.) ...................... 260°C
ESD, Note 3
MIC5213
2
August 2004
MIC5213
Micrel
Electrical Characteristics
VIN = VOUT + 1V; IL = 1mA; CL = 0.47µF; VEN ≥ 2.0V; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VO
Output Voltage Accuracy
–3
–4
3
4
%
%
∆VO/∆T
∆VO/VO
Output Voltage Temp. Coefficient
Line Regulation
Note 5
50
200 ppm/°C
VIN = VOUT + 1V to 16V
0.008
0.3
%
%
0.5
∆VO/VO
VIN–VO
Load Regulation
IL = 0.1mA to 80mA, Note 6
0.08
0.3
0.5
%
%
Dropout Voltage, Note 7
IL = 100µA
IL = 20mA
IL = 50mA
IL = 80mA
20
200
250
280
0.01
180
225
850
1800
200
180
0.05
mV
mV
mV
mV
µA
350
600
IQ
Quiescent Current
VEN ≤ 0.4V (shutdown)
10
IGND
Ground Pin Current, Note 8
IL = 100µA, VEN ≥ 2.0V (active)
IL = 20mA, VEN ≥ 2.0V (active)
IL = 50mA, VEN ≥ 2.0V (active)
IL = 80mA, VEN ≥ 2.0V (active)
VIN = VOUT(nominal) – 0.5V, Note 8
VOUT = 0V
µA
750
µA
µA
3000
300
µA
IGNDDO
ILIMIT
∆VO/∆PD
Enable Input
VIL
Ground Pin Current in Dropout
Current Limit
µA
250
mA
%/W
Thermal Regulation
Note 9
Enable Input Voltage Level
Enable Input Current
Logic Low (off)
Logic High (on)
0.6
V
V
VIH
2.0
IIL
V
IL ≤ 0.6V
IH ≥ 2.0V
0.01
8
1
µA
µA
IIH
V
50
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. Devices are ESD sensitive. Handling precautions recommended.
Note 4. The maximum allowable power dissipation is a function of the maximum junction temperature, T
, the junction-to-ambient thermal
J(max)
resistance, θ , and the ambient temperature, T . The maximum allowable power dissipation at any ambient temperature is calculated using:
JA
A
P
= (T
– T ) ÷ θ . Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator
D(max)
J(max)
A
JA
will go into thermal shutdown. θ of the SC-70-5 is 450°C/W, mounted on a PC board.
JA
Note 5. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 6. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects
are covered by the thermal regulation specification.
Note 7. 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 8. 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 9. 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 an 80mA load pulse at V = 16V for t = 10ms.
IN
August 2004
3
MIC5213
MIC5213
Micrel
Typical Characteristics
Dropout Voltage
vs. Output Current
Dropout Voltage
vs. Temperature
Dropout
Characteristics
1000
400
300
200
100
0
4
3
2
1
0
CIN = 10µF
CIN = 10µF
OUT = 1µF
COUT = 1µF
C
IL = 100µA
100
10
1
IL = 80mA
IL = 80mA
IL = 100µA
IL = 1mA
CIN = 10µF
COUT = 1µF
0.01
0.1
1
10
100
-60 -30
0
30 60 90 120 150
0
1
2
3
4
5
6
7
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
Ground Current
vs. Output Current
Ground Current
vs. Supply Voltage
Ground Current
vs. Temperature
2000
1500
1000
500
0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.0
1.5
1.0
0.5
0.0
CIN = 10µF
OUT = 1µF
IL = 50mA
C
IL = 80mA
VOUT = 3.3V
IL = 100µA
IL = 50mA
IL = 100µA
VIN = VOUT + 1V
0
10 20 30 40 50 60 70 80
OUTPUT CURRENT (mA)
-60 -30
0
30 60 90 120 150
0
1
2
3
4
5
6
7
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
Output Voltage
vs. Output Current
Short Circuit Current
vs. Input Voltage
Thermal Regulation
(3.3V Version)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
160
140
120
100
80
60
40
20
0
-20
-40
1-060
CIN = 10µF
OUT = 1µF
C
60
50
0
CIN = 10µF
40
COUT = 1µF
20
CL = 1µF
0
-50
0
50
100
150
200
0
1
2
3
4
5
6
7
-2
0
2
4
6
8
10 12 14 16
OUTPUT CURRENT (mA)
INPUT VOLTAGE (V)
TIME (ms)
Output Voltage
vs. Temperature
Short Circuit Current
vs. Temperature
Minimum Supply Voltage
vs. Temperature
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
200
180
160
140
120
100
3.5
3.4
3.3
CIN = 10µF
COUT = 1µF
IL = 1mA
V
= 3.3V
OUT
CIN = 10µF
3 DEVICES
COUT = 1µF
HI / AVG / LO
CIN = 10µF
OUT = 1µF
CURVES APPLICABLE
C
AT 100µA AND 50mA
-60 -30
0
30 60 90 120 150
-60 -30
0
30 60 90 120 150
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
MIC5213
4
August 2004
MIC5213
Micrel
Load Transient
Load Transient
100
0
40
0
COUT = 10µF
COUT = 1µF
IN = VOUT + 1
-100
-1200
50
-40
100
50
0
V
IN = VOUT + 1
V
0
-50
-1
-50
-5
0
1
2
3
4
5
6
7
8
0
5
10
15
20
TIME (ms)
TIME (ms)
Line Transient
Line Transient
3
2
2
1
CL = 1µF
CL = 11µF
I
L = 1mA
1
I
L = 1mA
0
0
-1
-82
-81
6
6
4
2
4
2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
Ripple Voltage
vs. Frequency
Ripple Voltage
vs. Frequency
Ripple Voltage
vs. Frequency
100
100
100
80
60
40
20
0
80
60
40
20
0
80
60
40
20
0
IL = 100µA
L = 1µF
IL = 1mA
L = 1µF
IL = 50mA
CL = 1µF
C
C
V
IN = VOUT + 1
V
IN = VOUT + 1
V
IN = VOUT + 1
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
August 2004
5
MIC5213
MIC5213
Micrel
Enable Characteristics
(3.3V Version)
Enable Characteristics
(3.3V Version)
Output Impedance
1000
5
4
3
2
1
4.0
3.0
2.0
1.0
0.0
-1.04
100
10
IL = 100µA
IL = 1mA
CL = 1µF
CL = 1µF
I
L = 100µA
I
L = 100µA
0
-41
1
2
0
2
0
IL = 100mA
0.1
0.01
-2
-2
-2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
0
2
4
6
8
10
TIME (µs)
FREQUENCY (Hz)
Enable Voltage
vs. Temperature
Enable Current
vs. Temperature
1.50
40
30
20
10
0
CIN = 10µF
OUT = 1µF
L = 1mA
CIN = 10µF
OUT = 1µF
L = 1mA
C
C
1.25
1.00
0.75
0.50
I
I
VEN = 5V
VON
VOFF
VEN = 2V
-60 -30
0
30 60 90 120 150
-60 -30
0
30 60 90 120 150
TEMPERATURE (°C)
TEMPERATURE (°C)
MIC5213
6
August 2004
MIC5213
Micrel
The actual power dissipation of the regulator circuit can be
determined using one simple equation.
Applications Information
Input Capacitor
P = (V – V
) I
+ V × I
D
IN
OUT OUT IN GND
A 0.1µF 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 when a battery is used as the input.
Substituting P
, determined above, for P and solving
D
D(max)
for the operating conditions that are critical to the application
will give the maximum operating conditions for the regulator
circuit.Forexample,ifweareoperatingtheMIC5213-3.0BC5
atroomtemperature, withaminimumfootprintlayout, wecan
determinethemaximuminputvoltageforasetoutputcurrent.
Output Capacitor
Typical PNP-based regulators require an output capacitor to
preventoscillation.TheMIC5213isultrastable,requiringonly
0.47µF of output capacitance for stability. The regulator is
stable with all types of capacitors, including the tiny, low-ESR
ceramic chip capacitors. The output capacitor value can be
increased without limit to improve transient response.
125 − 25
P
=
D(max)
450°C / W
= 222mW
P
D(max)
No-Load Stability
To prevent the device from entering thermal shutdown,
maximum power dissipation cannot be exceeded. Using the
outputvoltageof3.0V,andanoutputcurrentof80mA,wecan
determinethemaximuminputvoltage. Groundcurrent, maxi-
mum of 3mA for 80mA of output current, can be taken from
the “Electrical Characteristics” section of the data sheet.
TheMIC5213willremainstableandinregulationwithnoload
(other than the internal voltage divider) unlike many other
voltage regulators. This is especially important in CMOS
RAM keep-alive applications.
Enable Input
The MIC5213 features nearly zero off-mode current. When
EN (enable input) is held below 0.6V, all internal circuitry is
powered off. Pulling EN high (over 2.0V) re-enables the
device and allows operation. When EN is held low, the
regulator typically draws only 10nA of current. While the logic
threshold is TTL/CMOS compatible, EN may be pulled as
222mW = (V – 3.0V) 80mA + V × 3mA
IN
IN
222mW = (80mA × V + 3mA × V ) – 240mW
IN
IN
462mW = 83mA × V
IN
V
= 5.57V max.
IN
Therefore, a 3.0V application at 80mA of output current can
accept a maximum input voltage of 5.6V in an SC-70-5
package. For a full discussion of heat sinking and thermal
effects on voltage regulators, refer to Regulator Thermals
sectionofMicrel’sDesigningwithLow-DropoutVoltageRegu-
lators handbook.
high as 20V, independent of V .
IN
Thermal Behavior
The MIC5213 is designed to provide 80mA of continuous
current in a very small profile package. Maximum power
dissipationcanbecalculatedbasedontheoutputcurrentand
the voltage drop across the part. To determine the maximum
power dissipation of the package, use the junction-to-ambi-
ent thermal resistance of the device and the following basic
equation:
Fixed Voltage Regulator
The MIC5213 is ideal for general-purpose voltage regulation
in any handheld device. Applications that are tight for space
can easily use the Teeny™ SC-70 regulator which occupies
half the space of a SOT-23-5 regulator. The MIC5203 offers
a smaller system solution, only requiring a small multilayer
ceramic capacitor for stability.
T
− T
A
J(max)
P
=
D(max)
θ
JA
VOUT
3.0V
T
is the maximum junction temperature of the die,
J(max)
MIC5213-x.x
125°C, and T is the maximum ambient temperature. θ is
the junction-to-ambient thermal resistance ambient of the
regulator. The θ of the MIC5213 is 450°C/W.
A
JA
IN
OUT
3.6V
Li-Ion
Cell
EN
JA
GND
0.47µF
Figure 1. Single-Cell Regulator
August 2004
7
MIC5213
MIC5213
Micrel
Package Information
0.65 (0.0256) BSC
1.35 (0.053) 2.40 (0.094)
1.15 (0.045) 1.80 (0.071)
2.20 (0.087)
1.80 (0.071)
DIMENSIONS:
MM (INCH)
1.00 (0.039) 1.10 (0.043)
0.80 (0.032) 0.80 (0.032)
0.18 (0.007)
0.10 (0.004)
0.10 (0.004)
0.00 (0.000)
0.30 (0.012)
0.15 (0.006)
0.30 (0.012)
0.10 (0.004)
SC-70-5 (C5)
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc.
© 2004 Micrel, Incorporated
MIC5213
8
August 2004
相关型号：
MIC5213-2.8YC5TR
2.8V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PDSO5, LEAD FREE, SC-70, 5 PIN
MICREL
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