Micrel, Inc. MIC5306
November 2006
4
M9999-112006-B
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
).............................. 0V to 6V
Enable Input Voltage (V
EN
)............................. 0V to 6V
Power Dissipation (P
D
) ...................Internally Limited
(3)
Junction Temperature ...................... –40°C to +125°C
Lead Temperature (soldering, 5sec.).................260°C
Storage Temperature (T
s
) ................ –65°C to +150°C
Operating Ratings
(2)
Supply Input Voltage (V
IN
)........................2.25V to 5.5V
Enable Input Voltage
(EN1/EN2/LOWQ)
................... 0V to V
IN
Junction Temperature (T
J
) ................. –40°C to +125°C
TSOT23-5(
θ
JA
) ............................................... 235°C
Electrical Characteristics
V
IN
= V
OUT
+ 1.0V; C
OUT
= 1.0µF, I
OUT
= 100µA; T
J
= 25°C,
bold
values indicate –40°C to +125, unless noted.
Parameter Conditions Min Typ Max Units
Variation from nominal V
OUT
–1 +1 %
Output Voltage Accuracy
Variation from nominal V
OUT
; –40°C to +125°C
–2 +2
%
Line Regulation
V
IN
= V
OUT
+1V to 5.5V
0.01
0.3
0.5
%/V
Load Regulation
I
OUT
= 100µA to 150mA
0.5
1
1.5
%
Dropout Voltage
(4)
I
OUT
= 50mA
I
OUT
= 100mA
I
OUT
= 150mA
25
45
65
200
mV
Ground Pin Current
I
OUT
= 0mA to 150mA; V
IN
= 5.5V
16
25
µA
Ground Pin Current in
Shutdown
V
EN
≤ 0.2V; V
IN
= 5.5V 0.01
1
µA
Ripple Rejection
f = 10Hz to 1kHz; C
OUT
= 1µF; I
OUT
= 150mA
f = 20kHz; C
OUT
= 1µF; I
OUT
= 150mA
62
35
dB
Current Limit
V
OUT
= 0V
175 285 500 mA
Thermal Shutdown 150 °C
Thermal Shutdown Hysteresis 15 °C
Output Voltage Noise
C
OUT
= 1µF; 10Hz to 100kHz
91 µVrms
Enable Input
Logic Low
0.2
V
Enable Input Voltage
Logic High
1
V
V
IL
≤ 0.2V 0.01
1
µA
Enable Input Current
V
IH
≥ 1.0V 0.01
1
µA
Turn-on Time
(5)
C
OUT
= 1µF
250
500
µs
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 of any T
A
(ambient temperature) is 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.
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. For outputs below 2.25V, dropout voltage is the input-to-output differential with the minimum input voltage 2.25V.
5. Turn-on time is measured from Ven=1V of the positive edge of the enable signal to 90% of the rising edge of the output voltage of the regulator.
