MIC5270-3.0BM5 Micrel Semiconductor, MIC5270-3.0BM5 Datasheet - Page 2

• Manufacturer Part Number: MIC5270-3.0BM5
• Description: IttyBitty Negative Low-Dropout Regulator Preliminary Information
• Manufacturer: Micrel Semiconductor

MIC5270
Absolute Maximum Ratings
Input Voltage (V
Power Dissipation (P
Junction Temperature (T
Lead Temperature (soldering, 5 sec.) ....................... 260 C
Storage Temperature (T
ESD Rating, Note 3
Electrical Characteristics
V
Symbol
V
V
I
PSRR
I
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
MIC5270
GND
LIMIT
V
V
V
V
IN
OUT
IN
OUT
OUT
OUT
OUT
= V
– V
/ T
/V
/V
/ P
OUT
OUT
OUT
OUT
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
The maximum allowable power dissipation is a function of the maximum junction temperature, T
resistance,
P
temperature, and the regulator will go into thermal shutdown. See the “Thermal Considerations” section for details.
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 A to 100mA. 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.
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 V
D
D(max)
– 1.0V; C
Parameter
Output Voltage Accuracy
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Dropout Voltage, Note 7
Ground Current, Note 8
Ripple Rejection
Current Limit
Thermal Regulation
= (T
–IN
J(max)
JA
) ....................................... –20V to +20V
OUT
, and the ambient temperature, T
D
) ............................ Internally Limited
– T
= 4.7 F, I
S
J
) ....................... –65 C to +150 C
A
) ....................... –40 C to +125 C
)
JA
, where
OUT
= 100 A; T
JA
(Note 1)
is 235 C/W. Exceeding the maximum allowable power dissipation will result in excessive die
J
A
= 25 C, bold values indicate –40 C
. The maximum allowable power dissipation at any ambient temperature is calculated using:
Variation from nominal V
Condition
Note 5
V
I
I
I
I
I
I
I
I
I
f = 120Hz
V
Note 9
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
OUT
= V
= 100 A to 100mA, Note 6
= 100 A
= 10mA
= 50mA
= 100mA
= 100 A
= 10mA
= 50mA
= 100mA
= 0V
OUT
284
– 1V to –16V
IN
= –16V for t = 10ms.
Operating Ratings
Input Voltage (V
Junction Temperature (T
Thermal Resistance (
OUT
IN
) .......................................... –16V to –2V
T
J
J(max)
JA
+125 C; unless noted.
J
)......................................... Note 4
) ....................... –40 C to +125 C
, the junction-to-ambient thermal
(Note 2)
Min
–2
–3
0.055
0.05
Typ
100
250
360
480
250
160
0.7
2.1
35
70
50
Max
0.15
450
600
300
2.0
3.0
2
3
March 1999
ppm/ C
Micrel
Units
%/W
%/V
mV
mV
mV
mV
mA
mA
mA
dB
%
%
%
A
A