MIC5271 Datasheet, PDF (3/10 Pages) Micrel Semiconductor – μCap Negative Low-Dropout Regulator

MIC5271
Absolute Maximum Ratings (Note 1)
Input Voltage (V_–IN) ...................................... –20V to +0.3V
Enable Voltage (V_EN) .................................... –20V to +20V
Power Dissipation (P_D) ............................ Internally Limited
Junction Temperature (T_J) ....................... –40°C to +125°C
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Storage Temperature (T_S) ....................... –65°C to +150°C
ESD Rating, Note 3
Micrel
Operating Ratings (Note 2)
Input Voltage (V_IN) ....................................... –16V to –3.3V
Enable Voltage (V_EN) .................................... –16V to +16V
Junction Temperature (T_J) ....................... –40°C to +125°C
Thermal Resistance (θ_JA) Note 4 ......................... 235°C/W
Electrical Characteristics (Note 5)
V_IN = V_OUT – 1.0V; C_OUT = 4.7µF, I_OUT = 100µA; T_J = 25°C, bold values indicate –40°C ≤ T_J ≤ +125°C; unless noted.
Symbol
Parameter
Condition
Min Typ Max
Units
V_OUT
Output Voltage Accuracy
Variation from nominal V_OUT
–2
2
%
–3
3
%
∆V_OUT/∆T
Output Voltage Temperature
Coefficient
Note 6
100
ppm/°C
∆V_OUT/V_OUT Line Regulation
V_IN = V_OUT – 1V to –16V
0.04 0.15 %/V
0.2
∆V_OUT/V_OUT Load Regulation
I_OUT = 100µA to 100mA, Note 7
0.4
1.8
%
2.0
%
V_IN – V_OUT Dropout Voltage, Note 8
I_OUT = 100µA
I_OUT = 50mA
I_OUT = 100mA
55
mV
360 500 mV
500 700 mV
900
I_GND
Ground Current, Note 9
I_{GND_SD}
PSRR
Ground current in shutdown
Ripple Rejection
I_OUT = 100µA
I_OUT = 50mA
I_OUT = 100mA
V_EN = ±0.6V
f = 120Hz
25
100
µA
0.9
mA
2.0
3.0
mA
–1.0 0.1 +1.0 µA
50
dB
I_LIMIT
Current Limit
Enable Input
V_OUT = 0V
235 350 mA
T_ON
Turn-on Time
V_EN
Input Low voltage
Input High Voltage
Time to V_OUT = 90% nom.
Regulator OFF
Regulator ON
60
µs
±0.6
V
±2.0
V
I_EN
Enable Input Current
V_EN = ± 0.6V and –2.0V
V_EN = +2.0V
0.1
µA
5.6 10.0
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
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_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, where θ_JA is 235°C/W. Exceeding the maximum allowable power dissipation will result in excessive die
temperature, and the regulator will go into thermal shutdown. See the “Thermal Considerations” section for details.
Specification for packaged product only.
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 100µA 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.
October 2003
3
MIC5271