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