MIC2937A/29371/29372
Micrel
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C and limits in
boldface
apply over the full operating temperature range.
Unless otherwise specified, V
IN
= V
OUT
+ 1V, I
L
= 5mA, C
L
= 10µF. The MIC29372 are programmed for a 5V output voltage,
and V
SHUTDOWN
≤
0.6V (MIC29371-xx and MIC29372 only).
Symbol
V
O
Parameter
Output Voltage
Accuracy
Conditions
Variation from factory trimmed V
OUT
5mA
≤
I
L
≤
500mA
MIC2937A-12 and 29371-12 only:
5mA
≤
I
L
≤
500mA
(Note 2)
Output voltage > 10V
V
IN
= V
OUT
+ 1V to 26V
I
L
= 5 to 500mA
(Note 3)
I
L
= 5mA
I
L
= 100mA
Output voltage > 10V
I
L
= 500mA
Output voltage > 10V
I
L
= 750mA
Min
–1
–2
–2.5
–1.5
–3
–4
Typical
Max
1
2
2.5
1.5
3
4
100
350
0.10
0.40
0.16
0.30
150
180
Units
%
∆V
O
∆T
∆V
O
V
O
∆V
O
V
O
V
IN
– V
O
Output Voltage
Temperature Coef.
Line Regulation
Load Regulation
20
80
0.03
0.04
ppm/°C
%
%
Dropout Voltage
(Note 4)
80
200
240
300
420
370
mV
600
750
250
300
2.5
3
13
16
25
500
µA
mA
I
GND
Ground Pin Current
(Note 5)
I
L
= 5mA
I
L
= 100mA
I
L
= 500mA
I
L
= 750mA
160
1
8
15
200
I
GNDDO
I
LIMIT
∆V
O
∆P
D
e
n
V
IN
= 0.5V less than designed V
OUT
(V
OUT
≥
3.3V)
I
O
= 5mA
V
OUT
= 0V
(Note 6)
Thermal Regulation (Note 7)
Output Noise
Voltage
(10Hz to 100kHz)
I
L
= 100mA
C
L
= 10µF
C
L
= 100µF
Ground Pin
Current at Dropout
(Note 5)
Current Limit
µA
1.1
0.05
400
260
1.5
2
0.2
A
%/W
µV
RMS
MIC2937A/29371/29372
20
October 1999
MICREL [ MICREL SEMICONDUCTOR ]
