MIC2295A Datasheet, PDF (3/9 Pages) Micrel Semiconductor – High Power Density 1.2A Boost Regulator

Micrel
MIC2295
Absolute Maximum Rating (Note 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) ………………………..…..….. 2.5A
Ambient Storage Temperature (T_S) …. -65°C to +150°C
ESD Rating, Note 3...………………………… ……..2KV
Operating Range (Note 2)
Supply Voltage (V_IN) …………………..…… 2.5V to 10V
Junction Temperature Range (T_J) …… -40°C to +125°C
Package Thermal Impedance
_JA 2x2 MLF-8L lead …………………… 93°C/W
_JA ThinSOT23-5 lead …………………… 256°C/W
Electrical Characteristics TA=25^oC, VIN =VEN = 3.6V, VOUT = 15V, IOUT = 40mA, unless otherwise noted. Bold values
indicate -40°C
TJ
125°C.
Parameter
Symb
ol
Condition
Min Typ Max
Supply Voltage Range
Under-Voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
V_IN
V_UVLO
I_VIN
I_SD
V_FB
V_FB = 2V (not switching)
V_EN = 0V. Note 4.
(+/-1%)
(+/-2%) (Over Temp)
2.5
10
1.8 2.1 2.4
2.8
5
0.1
1
1.22
7
1.24
1.252
1.21
5
1.265
Feedback Input Current
I_FB
V_FB = 1.24V
-450
Line Regulation
3V
V_IN
5V
0.04 1
Load Regulation
5mA
I_OUT
40mA
1.5
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Enable Threshold
Enable Pin Current
Oscillator Frequency
Output over-voltage
protection
Over-Temperature
Threshold Shutdown
D_MAX
I_SW
V_SW
I_SW
V_EN
I_EN
f_SW
V_OVP
Tj
Note 5
I_SW = 1.2A
V_EN = 0V, V_SW = 10V
TURN ON
TURN OFF
V_EN = 10V
MIC2295BML only
Hysteresis
85 90
1.2 1.7
600
0.01 5
1.5
0.4
20 40
1.05 1.2 1.35
30 32 34
150
10
Unit
s
V
V
mA
mA
V
nA
%
%
%
A
mV
mA
V
mA
MHz
V
°C
°C
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications 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, TJ(Max), the junction-to-ambient thermal resistance,  JA, and the ambient temperature, TA. The
maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
This device is not guaranteed to operate beyond its specified operating rating.
IC devices are inherently ESD sensitive. Handling precautions required. Human body model rating: 1.5K in series with 100pF.
ISD = IVIN.
Guaranteed by design
July 2004
M9999-052402
3
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