MIC5309 Datasheet, PDF (3/11 Pages) Micrel Semiconductor – Low VIN/VOUT 300mA High PSRR ULDO™ with Ultra-Low IQ

Micrel, Inc.
MIC5309
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ............................................ 0V to V_BIAS
Bias Supply Voltage (V_BIAS).................................. 0V to +6V
Enable Voltage (V_EN)........................................... 0V to V_BIAS
Power Dissipation, ................................ Internally Limited⁽³⁾
Lead Temperature (soldering, 10µsec.)..................... 260°C
Storage Temperature (T_s) .........................–65°C to +150°C
ESD Rating⁽⁴⁾.................................................................. 3kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)....................................... +1.7V to V_BIAS
Bias Supply Voltage (V_BIAS).......................... +2.5V to +5.5V
Enable Input Voltage (V_EN)
0V to V_BIAS
Junction Temperature (T_J) ........................ –40°C to +125°C
Junction Thermal Resistance
1.6x1.6 MLF-6 (θ_JA) ...........................................90°C/W
TSOT-23-6 (θ_JA)...............................................235°C/W
Electrical Characteristics
V_BIAS = 3.6V; V_IN = V_OUT + 1V; V_IN ≤ V_BIAS; C_OUT = 1.0µF; 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 Variation from nominal V_OUT
–2.0
+2.0
%
Reference Voltage
ADJ pin voltage
0.7595 0.775 0.7905
V
V_BIAS Line Regulation
V_IN Line Regulation
Load Regulation
V_BIAS = 3.6 to 5.5V, V_IN = V_OUT + 1V
V_IN = V_OUT + 1V , V_BIAS = 5.5V
I_OUT = 100µA to 300mA
0.01
0.3
%/V
0.02
0.2
%/V
0.4
2
%
Dropout Voltage
Ground Pin Current⁽⁵⁾
I_OUT = 300mA
I_OUT = 100µA to 300mA , V_EN = V_BIAS
100
200
mV
23
35
µA
Ground Pin Current in
Shutdown
V_EN ≤ 0.2V
0.01
2.0
µA
V_IN Ripple Rejection
f = up to 1kHz; C_OUT = 1.0µF; no C_BYP
70
dB
f = up to 1kHz; C_OUT = 1.0µF; C_BYP = 10nF
50
90
dB
f = 20kHz; C_OUT = 1.0µF; C_BYP = 10nF
80
dB
Current Limit
V_OUT = 0V
350
550
800
mA
Output Voltage Noise
C_OUT = 1.0µF, C_BYP = 10nF, 10Hz to 100kHz
28
µV_RMS
Enable Inputs (EN)
Enable Input Voltage
Logic Low
0.2
V
Logic High
1.2
V
Enable Input Current
V_IL ≤ 0.2V
0.17
1
µA
V_IH ≥ 1.2V
1.5
1
µA
Turn-on Time
C_OUT = 1.0µF, C_BYP = 10nF
150
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. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5. I_GND = I_IN + I_BIAS – I_OUT.
November 2007
3
M9999-110807-B