April 2003 3 MIC5212
MIC5212 Micrel
Electrical Characteristics
Regulator A and B V
IN
= V
OUT
+ 1V; I
L
= 100µA; C
L
= 4.7µF; T
J
= 25°C, bold values indicate –40°C ≤ T
J
≤ +125°C; unless noted.
Symbol Parameter Conditions Min Typical Max Units
V
O
Output Voltage Accuracy variation from specified V
OUT
–11%
–22%
∆V
O
/∆T Output Voltage Note 4 40 ppm/°C
Temperature Coefficient
∆V
O
/V
O
Line Regulation V
IN
= V
OUT
+ 1V to 16V 0.009 0.05 % / V
0.1 % / V
∆V
O
/V
O
Load Regulation I
L
= 0.1mA to 500mA, Note 5 0.05 0.7 %
1.0 %
V
IN
– V
O
Dropout Voltage, Note 6 I
L
= 150mA 175 275 mV
(per regulator) 350 mV
I
L
= 500mA 350 500 mV
600 mV
I
GND
Ground Pin Current, Note 7 I
L
= 150mA 1.5 2.5 mA
(per regulator) 3.0 mA
I
L
= 500mA 12 20 mA
25 mA
PSRR Ripple Rejection f = 120Hz, I
L
= 150mA 75 dB5
I
LIMIT
Current Limit V
OUT
= 0V 750 1000 mA
Spectral Noise Density V
OUT
= 2.5V, I
OUT
= 50mA, C
OUT
= 2.2µF 500 nV/√Hz
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. 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 dissipa-
tion will result in excessive die temperature, and the regulator will go into thermal shutdown. The θ
JA
of the 8-lead SOIC (M) is 63°C/W
mounted on a PC board (see
“Thermal Considerations”
section for further details).
Note 4. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 5. 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 500mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Note 6. 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 7. 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.
Absolute Maximum Ratings (Note 1)
Supply Input Voltage (V
IN
A or B) ................. –20V to +20V
Power Dissipation (P
D
) ............................ Internally Limited
Storage Temperature Range ................... –60°C to +150°C
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Operating Ratings (Note 2)
Supply Input Voltage (V
IN
) ............................... 2.5V to 16V
Junction Temperature (T
J
) ....................... –40°C to +125°C
Thermal Resistance (θ
JA
)......................................... Note 3
