Datasheet

Micrel, Inc. MIC2954
September 2007 5
M9999-090607
Symbol Parameter Condition Min Typ Max Units
I
LIMIT
Current Limit,
Note 11
V
OUT
= 0V
750
800
mA
mA
∆V
OUT
/∆P
D
Thermal Regulation,
Note 12
0.05 0.2 %/W
I
L
= 100mA, C
L
= 2.2µF 400 µV
RMS
e
n
Output Noise Voltage
(10Hz to 100kHz)
I
L
= 100mA, C
L
= 33µF 260 µV
RMS
MIC2954-02/-07 (±0.5%)
1.220
1.200
1.235
1.250
1.260
V
V
Reference Voltage
MIC2954-03/-08 (±1%)
1.210
1.200
1.235
1.260
1.270
V
V
MIC2954-02/-07 (±0.5%), Note 13 1.190 1.270
V Reference Voltage
MIC2954-03/-08 (±1%),
Note 13 1.185 1.285
V
Feedback Pin Bias Current 20
40
60
nA
nA
MIC2954-02/-07 (±0.5%) 20 ppm/°C
Reference Voltage
Temperature Coefficient,
Note 12
MIC2954-03/-08 (±1%) 50 ppm/°C
Feedback Pin Bias Current
Temperature Coefficient
0.1 40 nA/°C
Error Comparator
Output Leakage Current V
OH
= 30V 0.01
1.00
2.00
µA
µA
Output Low Voltage V
IN
= 4.5V, I
OL
= 400µA 150
250
400
mV
mV
Upper Threshold Voltage
Note 14
60
40
25
mV
mV
Lower Threshold Voltage
Note 14
75
95
140
mV
mV
Hysteresis
Note 14
15
mV
mV
Shutdown Input
low (on) 1.3
0.7
V Input Logic Voltage
high (off) 2.0 V
V
SHDN
= 2.4V 30
50
100
µA
µA
Shutdown Pin Input Current
V
SHDN
= 30V 450
600
750
µA
µA
Regular Output Current in
Shutdown
Note 15
3
10
20
µA
µA