July 2009 3 M9999-070809
MIC2292/93 Micrel, Inc.
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ..................................................... 12V
Switch Voltage (V
SW
) ......................................–0.3V to 34V
Enable Pin Voltage (V
EN
) ................................... –0.3 to V
IN
FB Voltage (V
FB
) .............................................................6V
Switch Current (I
SW
) ........................................................ 2A
Ambient Storage Temperature (T
S
) .......... –65°C to +150°C
Schottky Reverse Voltage (V
DA
).................................... 34V
ESD Rating
(3)
............................................................... 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
) ..........................................2.5V to 10V
Output Voltage (V
OUT
) .......................................V
IN
to V
OVP
Junction Temperature Range (T
J
) ............ –40°C to +125°C
Package Thermal Impedance
8-lead MLF
®
(θ
JA
) ................................................ 93°C/W
Electrical Characteristics
(4)
T
A
= 25ºC, V
IN
= V
EN
= 3.6V, V
OUT
= 15V, I
OUT
= 20mA, unless otherwise noted. Bold values indicate –40ºC ≤ T
J
≤ +125ºC.
Symbol Parameter Condition Min Typ Max Units
V
IN
Supply Voltage Range 2.5 10 V
V
ULVO
Under Voltage Lockout 1.8 2.1 2.4 V
I
VIN
Quiescent Current V
FB
> 200mV, (not switching) 2.5 5 mA
I
SD
Shutdown Current V
EN
= 0V
(5)
0.1 1 µA
V
FB
Feedback Voltage (±5%) 90 95 100 mV
I
FB
Feedback Input Current V
FB
= 95mV -450 nA
Line Regulation
(6)
3V ≤ V
IN
≤ 5V 0.5 1 %
Load Regulation
(6)
5mA ≤ I
OUT
≤ 20mA 0.5 2 %
D
MAX
Maximum Duty Cycle 85 90 %
I
SW
Switch Current Limit 750 mA
V
SW
Switch Saturation Voltage I
SW
= 0.5A 450 mV
I
SW
Switch Leakage Current V
EN
= 0V, V
SW
= 10V 0.01 5 µA
V
EN
Enable Threshold TURN ON
TURN OFF
1.5
0.4
V
V
I
EN
Enable Pin Current V
EN
= 10V 20 40 µA
f
SW
Oscillator Frequency MIC2292
MIC2293
1.4
1.75
1.6
2.0
1.8
2.25
MHz
MHz
V
D
Schottky Forward Drop I
D
= 150mA 0.8 1 V
I
RD
Schottky Leakage Current V
R
= 30V 4 µA
V
OVP
Overvoltage Protection MIC2292/93-15
MIC2292/93-34
13
30
14
32
16
34
V
V
T
J
Overtemperature
Threshold Shutdown
Hysteresis
150
10
°C
°C
Notes:
1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specications do not apply when operating
the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, T
J
(max),
the junction-to-ambient thermal resistance, θ
JA
, and the ambient temperature, T
A
. The maximum allowable power dissipation will result in excessive
die temperature, and the regulator will go into thermal shutdown.
2. This device is not guaranteed to operate beyond its specied operating ratings.
3. Devices are inherently ESD sensitive. Handling precautions required. Human body model.
4. Specication for packaged product only.
5. I
SD
= I
VIN
.
6. Guaranteed by design.
