MIC5357 Datasheet, PDF (4/11 Pages) Micrel Semiconductor – High Performance, Low Noise Dual 500mA ULDO™

Micrel, Inc.
MIC5357
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ........................................ −0.3V to +6V
Enable Input Voltage (V_EN1 , V_EN2)..................... −0.3V to V_IN
Power Dissipation ..................................Internally Limited⁽³⁾
Lead Temperature (soldering, 3sec) .......................... 260°C
Storage Temperature (T_S).........................−65°C to +150°C
ESD Rating⁽⁴⁾ ................................................................. 2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)..................................... +2.6V to +5.5V
Enable Input Voltage (V_EN1, V_EN2) .......................... 0V to V_IN
Junction Temperature ............................... –40°C to +125°C
Junction Thermal Resistance
8-Pin ePAD MSOP (θ_JA) .................................64.4°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_EN1 = V_EN2 = V_OUT + 1.0V; higher of the two regulator outputs, I_OUTLDO1 = I_OUTLDO2 = 100µA; C_OUT1 = C_OUT2 = 2.2µF; C_BYP = 0.1µF;
T_J = 25°C, bold values indicate –40°C ≤ T_J ≤ +125°C, unless noted.
Parameter
Conditions
Min. Typ. Max. Units
Output Voltage Accuracy
Variation from nominal V_OUT
Variation from nominal V_OUT; –40°C to +125°C
-2.0
+2.0
%
-3.0
+3.0
Line Regulation
V_IN = V_OUT + 1V to 5.5V; I_OUT = 100µA
0.05
0.3
0.6
%/V
Load Regulation
I_OUT1&2 =100µA to 500mA
0.7 2.5
%
Dropout Voltage ⁽⁶⁾
Ground Current
Ground Current in Shutdown
I_OUT1,2 = 100µA
I_OUT1,2 = 50mA
I_OUT1,2 = 500mA
V_EN1 ≥ 1.2V; V_EN2 ≤ 0.2V; I_OUT = 0mA to 500mA
V_EN1 ≤ 0.2V; V_EN2 ≥ 1.2V; I_OUT2 = 0mA to 500mA
V_EN1 = V_EN2 ≥ 1.2V; I_OUT1 = 500mA, I_OUT2 = 500mA
V_EN1 = V_EN2 = 0V
0.1
12
50
mV
130 300
95 175
95 175 µA
160 240
0.01 2
µA
Ripple Rejection
f = 1kHz; C_OUT = 2.2µF; C_BYP = 0.1µF
f = 20kHz; C_OUT = 2.2µF; C_BYP = 0.1µF
70
dB
45
Current Limit
Output Voltage Noise
Enable Inputs (EN1 / EN2)
V_OUT1 = 0V
V_OUT2 = 0V
C_OUT = 2.2µF; C_BYP = 0.1µF; 10Hz to 100kHz
550 950 1300
mA
550 950 1300
51
µV_RMS
Enable Input Voltage
Logic Low
Logic High
0.2
V
1.2
Enable Input Current
V_IL ≤ 0.2V
V_IH ≥ 1.2V
Turn-on Time (See Timing Diagram)
0.01
µA
0.01
Turn-on Time (LDO1 and 2)
C_OUT = 2.2µF; C_BYP = 0.1µF
38 100 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. Specification for packaged product only.
6. 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
2.6V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.6V.
January 2011
4
M9999-011311