MIC3975
Symbol
Parameter
Condition
Min
Typ
Max
Micrel
Units
Adjustable Output Only
Reference Voltage
Note 10
Adjust Pin Bias Current
Reference Voltage
Temp. Coefficient
Adjust Pin Bias Current
Temp. Coefficient
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
Exceeding the absolute maximum ratings may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
P
D(max)
= (T
J(max)
– T
A
)
÷ θ
JA
, where
θ
JA
depends upon the printed circuit layout. See “Applications Information.”
Output voltage temperature coefficient is
∆V
OUT(worst case)
÷
(T
J(max)
– T
J(min)
) where T
J(max)
is +125°C and T
J(min)
is –40°C.
V
DO
= V
IN
– V
OUT
when V
OUT
decreases to 98% of its nominal output voltage with V
IN
= V
OUT
+ 1V. For output voltages below 2.25V, dropout
voltage is the input-to-output voltage differential with the minimum input voltage being 2.25V. Minimum input operating voltage is 2.25V.
I
GND
is the quiescent current. I
IN
= I
GND
+ I
OUT
.
V
EN
≤
0.8V, V
IN
≤
8V, and V
OUT
= 0V.
For a 2.5V device, V
IN
= 2.250V (device is in dropout).
1.228
1.215
1.203
1.240
1.252
1.265
1.277
80
120
V
V
V
nA
nA
ppm/°C
nA/°C
40
Note 11
20
0.1
Note 10.
V
REF
≤
V
OUT
≤
(V
IN
– 1V), 2.25V
≤
V
IN
≤
16V, 10mA
≤
I
L
≤
750mA, T
J
= T
MAX
.
Note 11.
Thermal regulation is defined as the change in output voltage at a time t after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for a 200mA load pulse at V
IN
= 16V for t = 10ms.
Note 12.
Specification for packaged product only.
MIC3975
4
February 2003
MICREL [ MICREL SEMICONDUCTOR ]
