MIC2295_05 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – High Power Density 1.2A Boost Regulator

Micrel, Inc.
MIC2295
Absolute Maximum Rating ⁽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⁽³⁾................................................................. 2KV
Operating Range ⁽²⁾
Supply Voltage (V_IN).......................................... 2.5V to 10V
Junction Temperature Range (T_J)..............-40°C to +125°C
Package Thermal Impedance
θ_JA 2x2 MLF-8 lead ............................................93°C/W
θ_JA Thin SOT-23-5 lead ...................................256°C/W
Electrical Characteristics
T_A=25^oC, V_IN =V_EN = 3.6V, V_OUT = 15V, I_OUT = 40mA, unless otherwise noted. Bold values indicate -40°C ≤ T_J ≤ 125°C.
Symbol Parameter
Condition
Min Typ Max
Units
V_IN
V_UVLO
I_VIN
I_SD
V_FB
Supply Voltage Range
Under-Voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
V_FB = 2V (not switching)
V_EN = 0V⁽⁴⁾
(+/-1%)
(+/-2%) (Over Temp)
2.5
10
V
1.8
2.1
2.4
V
2.8
5
mA
0.1
1
µA
1.227 1.24 1.252
V
1.215
1.265
I_FB
Feedback Input Current
V_FB = 1.24V
-450
nA
Line Regulation
Load Regulation
3V ≤ V_IN ≤ 5V
5mA ≤ I_OUT ≤ 40mA
0.04
1
%
1.5
%
D_MAX
Maximum Duty Cycle
85
90
%
I_SW
Switch Current Limit
V_SW
Switch Saturation Voltage
I_SW
Switch Leakage Current
V_EN
Enable Threshold
Note 5
I_SW = 1.2A
V_EN = 0V, V_SW = 10V
TURN ON
TURN OFF
1.2
1.7
A
600
mV
0.01
5
µA
1.5
V
0.4
I_EN
Enable Pin Current
V_EN = 10V
20
40
µA
f_SW
Oscillator Frequency
1.05 1.2 1.35 MHz
V_OVP
Output over-voltage protection MIC2295BML only
30
32
34
V
T_J
Over-Temperature Threshold
Shutdown
Hysteresis
150
°C
10
°C
Notes:
1.
2.
3.
4.
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, 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.
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.
I_SD = I_VIN.
Guaranteed by design.
April 2005
3
M9999-042605
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