MIC5319 Datasheet, PDF (3/10 Pages) Micrel Semiconductor – 500mA uCap Ultra-Low Dropout, High PSRR LDO Regulator

MIC5319
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(T_J) ........................ –40°C to +125°C
Storage Temperature (T_S) ......................... –65°C to 150°C
Lead Temperature (soldering, 5 sec.) ....................... 260°C
ESD⁽⁴⁾ .............................................................................................. 3kV
Micrel
Operating Ratings⁽²⁾
Supply Input Voltage (V_IN) .............................. 2.5V to 5.5V
Enable Input Voltage (V_EN) .................................. 0V to V_IN
Junction Temperature (T_J) ....................... –40°C to +125°C
Package Thermal Resistance
MLF™ (θ_JA) ......................................................... 93°C/W
TSOT-23 (θ_JA) ................................................... 235°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_OUT +1.0V; C_OUT = 2.2µF, I_OUT = 100µA; T_J = 25°C, bold values indicate –40°C to + 125°C; unless noted.
Parameter
Condition
Min Typ
Max Units
Output Voltage Accuracy
Feedback Voltage
Variation from nominal V_OUT
Variation from nominal V_OUT, I_OUT = 100µA to 500mA
–1.0
+1.0 %
–2.0
+2.0 %
1.2375 1.25 1.2625 V
(ADJ option)
1.225 1.25 1.275 V
Line Regulation
Load Regulation⁽⁶⁾
Dropout Voltage⁽⁷⁾⁽⁸⁾
Ground Pin Current⁽⁹⁾
Ground Pin Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Turn-On Time
Enable Input
V_IN = V_OUT +1V to 5.5V
I_OUT = 100µA to 500mA
I_OUT = 50mA
I_OUT = 500mA
I_OUT = 0 to 500mA
V_{EN ≤} 0.2V
f = up to 1kHz; C_OUT = 2.2µF ceramic; C_BYP = 0.1µF
f = 10kHz; C_OUT = 2.2µF ceramic; C_BYP = 0.1µF
V_OUT = 0V
C_OUT =2.2µF, C_BYP = 0.1µF, 10Hz to 100kHz
C_OUT = 2.2µF; C_BYP = 0.01µF
0.04 0.3 %/V
0.1
0.5
%
20
40
mV
200 400 mV
90
150
µA
0.5
µA
70
dB
60
dB
600 700
mA
40
µVrms
40
100
µs
Enable Input Voltage
Logic Low (Regulator Shutdown)
0.2
V
Logic High (Regulator Enabled)
1.0
V
Enable Input Current
V_IL ≤ 0.2V (Regulator Shutdown)
V_{IH ≥} 1.0V (Regulator Enabled)
0.01
1
µA
0.01
1
µA
Notes:
1. Exceeding maximum ratings may damage the device.
2. The device is not guaranteed to work 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 may go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human Body Model.
5. Specification for packaged product only.
6. Regulation is measured at constant junction temperature using low duty cycle pulse testing.
7. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal V_OUT. For outputs below 2.5V,
dropout voltage spec does not apply, as part is limited by minimum V_IN spec of 2.5V. There may be some typical dropout degradation at V_OUT <3V.
8. For ADJ option, V_OUT = 3V for dropout specification.
9. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin
current.
October 2004
3
M9999-100604