Datasheet
Micrel, Inc. MIC2954
September 2007
4
M9999-090607
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
)....................................... –20V to +60V
Feedback Voltage (V
FB
)
(14, 15)
........................ –1.5V to +26V
Shutdown Input Voltage (V
SHDN
).................... –0.3V to +30V
Error Output Voltage (V
ERR
) .......................... –0.3V to +30V
Power Dissipation (P
D
)
(4)
..........................Internally Limited
Lead Temperature (soldering, 5 sec.)........................ 260°C
Storage Temperature (T
s
) .........................–65°C to +150°C
ESD Rating
(3)
Operating Ratings
(2)
Supply Voltage (V
IN
)...................................... +2.0V to +30V
Junction Temperature (T
J
) ........................–40°C to +125°C
Package Thermal Resistance (θ
JC
, θ
JA
)
(5)
Electrical Characteristics
MIC2954-07/08: V
FB
= V
TAP
; V
SNS
= V
OUT
; V
SHDN
≤ 0.6V. All versions: V
IN
= 6V; I
L
= 1mA; C
L
= 2.2µF; T
J
= 25°C,
bold values indicate –40°C ≤ T
J
≤ +125°C; Note 8; unless noted.
Symbol Parameter Condition Min Typ Max Units
MIC2954-02/-07 (±0.5%)
4.975
4.940
5.000
5.025
5.060
V
V
MIC2954-02/-07 (±0.5%), 1mA ≤ I
L
≤ 250mA
4.930 5.000 5.070
V
MIC2954-03/-08 (±1%)
4.950
4.900
5.000
5.050
5.100
V
V
V
OUT
Output Voltage
MIC2954-03/-08 (±1%), 1mA ≤ I
L
≤ 250mA
4.880 5.000 5.120
V
MIC2954-02/-07 (±0.5%)
20 100
ppm/°C ∆V
OUT
/∆T
Output Voltage Temperature
Coefficient,
Note 6
MIC2954-03/-08 (±1%)
20 150
ppm/°C
MIC2954-02/-07 (±0.5%), V
IN
= 6V to 26V 0.03
0.10
0.20
%/V
%/V
∆V
OUT
/V
OUT
Line Regulation,
Note 7
MIC2954-03/-08 (±1%), V
IN
= 6V to 26V 0.03
0.20
0.40
%/V
%/V
MIC2954-02/-07 (±0.5%), I
L
= 1 to 250mA 0.04
0.16
0.20
%/V
%/V
∆V
OUT
/V
OUT
Load Regulation,
Note 8
MIC2954-03/-08 (±1%), I
L
= 1 to 250mA 0.04
0.20
0.30
%/V
%/V
Dropout Voltage, Note 9
I
L
= 1mA 60
100
150
mV
mV
I
L
= 50mA 220
250
420
mV
mV
I
L
= 100mA 250
300
450
mV
mV
V
IN
– V
OUT
I
L
= 250mA 375
450
600
mV
mV
Ground Pin Current, Note 10
I
L
= 1mA 140
200
300
µA
µA
I
L
= 50mA 0.5
1
2
mA
mA
I
L
= 100mA 1.7
2.5
3.5
mA
mA
I
GND
I
L
= 250mA 5
9
12
mA
mA
I
GND(DO)
Ground Pin Current at Dropout,
Note 10
V
IN
= 4.5V 180
300
µA