MIC5219
500 mA Peak Output LDO Regulator
Features
• 500 mA Output Current Capability
- SOT23-5 Package - 500 mA Peak
- 2 mm x 2 mm x 0.9 mm VDFN Package -
500 mA Continuous
- 2 mm x 2 mm x 0.6 mm Thin DFN Package -
500 mA Continuous
- MSOP-8 Package - 500 mA Continuous
• Low 500 mV Maximum Dropout Voltage at Full
Load
• Extremely Tight Load and Line Regulation
• Tiny SOT-23-5 and Power MSOP-8 Package
• Ultra-Low Noise Output
• Low Temperature Coefficient
• Current and Thermal Limiting
• Reversed-Battery Protection
• CMOS/TTL-Compatible Enable/Shutdown Control
• Near-Zero Shutdown Current
General Description
The MIC5219 is an efficient linear voltage regulator
with high peak output current capability, very low
dropout voltage, and better than 1% output voltage
accuracy. Dropout is typically 10 mV at light loads and
less than 500 mV at full load.
The MIC5219 is designed to provide a peak output
current for start-up conditions where higher inrush
current is demanded. It features a 500 mA peak output
rating. Continuous output current is limited only by
package and layout.
The MIC5219 can be enabled or shut down by a
CMOS- or TTL-compatible signal. When disabled,
power consumption drops nearly to zero. Dropout
ground current is minimized to help prolong battery life.
Other key features include reversed-battery protection,
current limiting, overtemperature shutdown, and low
noise performance with an ultra-low noise option.
The MIC5219 is available in adjustable or fixed output
voltages in the space-saving 6-pin (2 mm × 2 mm)
VDFN, 6-pin (2 mm × 2 mm) Thin DFN, SOT23-5, and
8-pin power MSOP packages. For higher power
requirements see the MIC5209 or MIC5237.
Applications
• Laptop, Notebook, and Palmtop Computers
• Cellular Telephones and Battery-Powered
Equipment
• Consumer and Personal Electronics
• PC Card V
CC
and V
PP
Regulation and Switching
• SMPS Post-Regulator/DC-to-DC Modules
• High-Efficiency Linear Power Supplies
DS20006021A-page 1
2018 Microchip Technology Inc.
MIC5219
Package Types
MIC5219-x.xYMM
MSOP-8 (MM)
Fixed Voltages
(Top View)
MIC5219YMM
MSOP-8 (MM)
Adjustable Voltages
(Top View)
EN 1
IN 2
OUT 3
BYP 4
8 GND
7 GND
6 GND
5 GND
EN 1
IN 2
OUT 3
BYP 4
8 GND
7 GND
6 GND
5 GND
MIC5219-x.xYML
6-Pin VDFN (ML)
(Top View)
MIC5219YMT
6-Pin TDFN (MT)
(Top View)
EN 1
GND 2
IN 3
6 BYP
5 NC
4 OUT
EN 1
GND 2
IN 3
6 NC
5 ADJ
4 OUT
MIC5219-x.xYM5
SOT23-5 (M5)
Fixed Voltages
(Top View)
MIC5219YM5
SOT23-5 (M5)
Adjustable Voltage
(Top View)
E N GND IN
3
2
1
E N GND IN
3
2
1
L Gx x
4
5
4
LGAA
5
Part
Identification
BYP
OUT
ADJ
OUT
DS20006021A-page 2
2018 Microchip Technology Inc.
MIC5219
Typical Application Circuits
MIC5219
5V Ultra-Low Noise Regulator
MIC5219-5.0YMM
ENABLE
SHUTDOWN
1
2
3
4
8
7
6
5
ENABLE
SHUTDOWN
MIC5219
3.3V Ultra-Low Noise Regulator
MIC5219-3.3YM5
V
IN
4V
1
2
3
4
5
V
IN
6V
V
OUT
5V
2.2μF
tantalum
V
OUT
3.3V
2.2μF
tantalum
470pF
470pF
MIC5219
Ultra-Low Noise Regulator (Fixed)
V
IN
ENABLE
SHUTDOWN
MIC5219-x.xYML
1
2
3
6
5
4
V
OUT
C
BYP
(optional)
EN
C
OUT
MIC5219
Ultra-Low Noise Regulator (Adjustable)
V
IN
ENABLE
SHUTDOWN
MIC5219YMT
1
2
3
6
5
4
V
OUT
R1
+
2.2μF
R2
470pF
EN
2018 Microchip Technology Inc.
DS20006021A-page 3
MIC5219
Block Diagrams
Ultra-Low Noise Fixed Regulator
V
IN
IN
BYP
C
B Y P
(optional)
Bandgap
Ref.
V
R E F
EN
Current-Limit
Thermal Shutdown
MIC5219-x.xYM5/YMM/YMT
GND
OUT
V
OUT
C
OUT
Ultra-Low Noise Adjustable
Regulator
V
IN
IN
OUT
R1
V
OUT
C
OUT
R2
Bandgap
Ref.
V
R E F
EN
Current-Limit
Thermal Shutdown
MIC5219YM5/YMM/YMT
GND
C
B Y P
(optional)
DS20006021A-page 4
2018 Microchip Technology Inc.
MIC5219
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Input Voltage (V
IN
) .......................................................................................................................... –20V to +20V
Power Dissipation (P
D
) .......................................................................................................................... Internally Limited
Operating Ratings ††
Supply Input Voltage (V
IN
) ......................................................................................................................... +2.5V to +12V
Enable Input Voltage (V
EN
) .................................................................................................................................0V to V
IN
† Notice:
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, T
J(MAX)
, the junction-to-ambient thermal resistance,
θ
JA
,
and the ambient temperature, T
A
. The maximum allowable power dissipation at any ambient temperature is calculated
using: P
D(MAX)
= (T
J(MAX)
– T
A
) ÷
θ
JA
. Exceeding the maximum allowable power dissipation will result in excessive die
temperature, and the regulator will go into thermal shutdown. See
Table 4-1
and the
Thermal Considerations
section for
details.
†† Notice:
The device is not guaranteed to function outside its operating rating.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics:
Unless otherwise indicated, V
IN
= V
OUT
+ 1.0V; C
OUT
= 4.7
μF,
I
OUT
= 100
μA;
T
J
= +25°C,
bold
values indicate –40°C
≤
T
J
≤
+125°C.
Parameters
Output Voltage
Output Voltage
Temperature Coefficient
Line Regulation
Load Regulation
Note 1:
2:
Sym.
V
OUT
Min.
–1
Typ.
—
Max.
1
Units
%
Conditions
Variation from Nominal V
OUT
–2
—
—
—
—
—
—
40
0.009
—
0.05
—
2
—
0.05
0.1
0.5
0.7
%
∆V
OUT
/∆T
∆V
OUT
/V
OUT
∆V
OUT
/V
OUT
ppm/°C
Note 1
%/V
%
V
IN
= V
OUT
+ 1V to 12V
I
OUT
= 100 µA to 500 mA,
Note 2
3:
4:
5:
6:
7:
Output voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are
tested for load regulation in the load range from 100
μA
to 500 mA. Changes in output voltage due to
heating effects are covered by the thermal regulation specification.
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.
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.
V
EN
is the voltage externally applied to devices with the EN (enable) input pin.
Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipa-
tion is applied, excluding load or line regulation effects. Specifications are for a 500 mA load pulse at
V
IN
= 12V for t = 10 ms.
C
BYP
is an optional, external bypass capacitor connected to devices with a BYP (bypass) or ADJ (adjust)
pin.
2018 Microchip Technology Inc.
DS20006021A-page 5
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