MIC2288 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – 1A 1.2 MHZ PWM BOOST CONVERTER IN THIN SOT 23 AND 2 X MLF

MIC2288
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
Storage Temperature (T_S) ....................... –65°C to +150°C
ESD Rating⁽³⁾ ................................................................ 2kV
Micrel
Operating Ratings⁽²⁾
Supply Voltage (V_IN) ........................................ 2.5V to 10V
Junction Temperature Range (T_J) ........... –40°C to +125°C
Package Thermal Impedance
2mm × 2mm MLF™-8 (θ_JA) ................................. 93°C/W
Thin SOT-23-5 (θ_JA) .......................................... 256°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C, 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
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⁽⁵⁾
(±1%)
(±2%) (Over Temp)
2.5
1.8
1.227
1.215
2.1
2.8
0.1
1.24
10
2.4
5
1
1.252
1.265
I_FB
D_MAX
I_SW
V_SW
I_SW
V_EN
Feedback Input Current
Line Regulation
Load Regulation
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Enable Threshold
V_FB = 1.24V
3V ≤ V_IN ≤ 5V
5mA ≤ I_OUT ≤ 40mA
I_SW = 1A
V_EN = 0V, V_SW = 10V
Turn on
Turn off
–450
0.1
1
0.2
1
85
90
1.2
550
0.01
5
1.5
0.4
I_EN
f_SW
V_OVP
T_J
Enable Pin Current
Oscillator Frequency
Output Overvoltage Protection
Overtemperature
Threshold Shutdown
V_EN = 10V
MIC2288 MLF™ package option only
Hysteresis
20
40
1.05 1.2 1.35
30
32
34
150
10
Units
V
V
mA
µA
V
V
nA
%
%
%
A
mV
µA
V
V
µA
MHz
V
°C
°C
Notes:
1. 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.
2. This device is not guaranteed to operate beyond its specified operating rating.
3. IC devices are inherently ESD sensitive. Handling precautions required. Human body model rating: 1.5K in series with 100pF.
4. Specification for packaged product only.
5. I_SD = I_VIN.
February 2004
3
M9999-021904