MIC29310 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – 3A Fast-Response LDO Regulator

MIC29310/29312
Micrel
Electrical Characteristics
T_J = 25°C, bold values indicate 0°C ≤ T_J ≤ +125°C; unless noted
Parameter
Condition
Output Voltage
Line Regulation
Load Regulation
∆V_O / ∆T
Dropout Voltage
Ground Current
I_GNDDO Ground Pin
Current at Dropout
10mA ≤ I_O ≤ I_FL, (V_OUT + 1V) ≤ V_IN ≤ 8V, Note 4
I_O = 10mA, (V_OUT + 1V) ≤ V_IN ≤ 16V
V_IN = V_OUT + 1V, 10mA ≤ I_OUT ≤ I_{FULL LOAD}, Notes 4, 8
Output Voltage Temperature Coefficient, Note 8
∆V_OUT = –1%, Note 5
I_O = 100mA
I_O = 750mA
I_O = 1.5A
I_O = 3A
I_O = 750mA, V_IN = V_OUT + 1V
I_O = 1.5A
I_O = 3A
V_IN = 0.5V less than specified V_OUT. I_OUT = 10mA
Current Limit
Minimum Load Current
V_OUT = 0V, Note 6
e_n, Output Noise Voltage
(10Hz to 100kHz) I_L = 100mA
Reference (MIC29312 only)
C_L = 10µF
C_L = 33µF
Reference Voltage
Adjust Pin Bias Current
10mA ≤ I_O ≤ I_FL, V_OUT + 1V ≤ V_IN ≤ 8V, Note 4
Reference Voltage
Temperature Coefficient
Adjust Pin Bias Current
Temperature Coefficient
Enable Input (MIC29312 only)
Input Logic Voltage
Enable Pin Input Current
Note 9
low (off)
high (on)
V_EN = V_IN
V_EN = 0.8V
Regulator Output
Current in Shutdown
Note 10
Min Typ Max Units
–2
2
%
0.06 0.5
%
0.2
1
%
20
100 ppm/°C
80
200
mV
220
mV
330
mV
600 1000 mV
5
20
mA
15
mA
60
150
mA
2
3
mA
3.0
3.8
A
7
10
mA
400
µV_RMS
260
µV_RMS
1.215
1.265 V_MAX
40
80
nA
120 nA
20
ppm/°C
0.1
nA/°C
0.8
V
2.4
V
15
30
µA
75
µA
–
2
µA
4
µA
10
µA
20
µA
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. Devices are ESD sensitive. Handling precautions recommended.
Note 4:
Note 5:
Note 6:
Note 7:
Full Load current is defined as 3A for the MIC29310/29312. For testing, V_OUT is programmed to 5V.
Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with V_OUT + 1V applied
to V_IN.
For this test, V_IN is the larger of 8V or V_OUT + 3V.
Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground
pin current.
Note 8: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 9: V_REF ≤ V_OUT ≤ (V_IN – 1V), 2.4V ≤ V_IN ≤ 16V, 10mA < I_L ≤ I_FL, T_J ≤ T_J(max).
Note 10: V_EN ≤ 0.8V and V_IN ≤ 8V, V_OUT = 0.
July 1999
3
MIC29310/29312