MIC2937A/29371/29372
Micrel, Inc.
Operating Input Supply Voltage..................................................2V
†
to 26V
Adjust Input Voltage (Notes
9 and 10).................................–1.5V
to +26V
Shutdown Input Voltage .......................................................–0.3V to +30V
Error Comparator Output Voltage.........................................–0.3V to +30V
Across the full operating temperature, the minimum input voltage range for
full output current is 4.3V to 26V. Output will remain in-regulation at lower
output voltages and low current loads down to an input of 2V at 25°C.
†
Absolute Maximum Ratings
Power Dissipation (Note
1)...............................................Internally
Limited
Lead Temperature (Soldering, 5 seconds).........................................260°C
Storage Temperature Range.............................................–65°C to +150°C
Operating Junction Temperature Range ..........................–40°C to +125°C
TO-220
θ
JC
.....................................................................................2.5°C/W
TO-263
θ
JC
.....................................................................................2.5°C/W
Input Supply Voltage..............................................................–20V to +60V
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C and limits in
boldface
apply over the full operating temperature range. Unless other-
wise 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
I
L
= 500mA
I
L
= 750mA
I
GND
Ground Pin Current
(Note
5)
I
L
= 5mA
I
L
= 100mA
I
L
= 500mA
I
L
= 750mA
V
IN
= 0.5V less than designed V
OUT
(V
OUT
≥ 3.3V)
I
O
= 5mA
V
OUT
= 0V
(Note
6)
(Note
7)
C
L
= 10µF
C
L
= 100µF
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
%
ΔV
O
ΔT
ΔV
O
V
O
ΔV
O
V
O
V
IN
– V
O
Output Voltage
Temperature Coef.
Line Regulation
Load Regulation
Dropout Voltage
(Note
4)
20
80
0.03
0.04
80
200
240
300
420
370
160
1
8
15
200
ppm/°C
%
%
mV
Output voltage > 10V
Output voltage > 10V
I
GNDDO
I
LIMIT
ΔV
O
ΔP
D
e
n
Ground Pin
Current at Dropout
(Note
5)
Current Limit
Thermal Regulation
Output Noise
Voltage
(10Hz to 100kHz)
600
750
250
300
2.5
3
13
16
25
500
µA
mA
µA
1.1
0.05
400
260
1.5
2
0.2
A
%/W
µV RMS
I
L
= 100mA
May 2006
3
MIC2937A/29371/29372
MICREL [ MICREL SEMICONDUCTOR ]
