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MIC2290 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – 2mm × 2mm PWM Boost Regulator with Internal Schotty Diode
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MIC2290
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ..................................................... 12V
Switch Voltage (VSW) ..................................... –0.3V to 34V
Enable Pin Voltage (VEN) ................................... –0.3 to VIN
FB Voltage (VFB) ............................................................. 6V
Switch Current (ISW) ....................................................... 2A
Storage Temperature (TS) ....................... –65°C to +150°C
ESD Rating(3) ................................................................ 2kV
Micrel
Operating Ratings(2)
Supply Voltage (VIN) ........................................ 2.5V to 10V
Junction Temperature Range (TJ) ........... –40°C to +125°C
Package Thermal Impedance
2mm × 2mm MLF™ (θJA) .................................... 93°C/W
Electrical Characteristics(4)
TA = 25°C, VIN = VEN = 3.6V, VOUT = 10V, IOUT = 20mA, unless otherwise noted. Bold values indicate –40°C ≤ TJ ≤ ±125°C.
Symbol
Parameter
Condition
Min Typ Max
VIN
VUVLO
IVIN
ISD
VFB
Supply Voltage Range
Undervoltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
VFB = 2V, (not switching)
VEN = 0V(5)
(±1%)
(±2%) (Over Temp)
2.5
1.8
1.227
1.215
2.1
2.5
0.2
1.24
10
2.4
5
1
1.252
1.265
IFB
DMAX
ISW
VSW
ISW
VEN
Feedback Input Current
Line Regulation
Load Regulation
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Enable Threshold
VFB = 1.24V
3V ≤ VIN ≤ 5V
5mA ≤ IOUT ≤ 20mA
ISW = 0.5A
VEN = 0V, VSW = 10V
Turn on
Turn off
–450
0.1
1
0.2
1
85
90
0.75
450
0.01
5
1.5
0.4
IEN
fSW
VD
IRD
VOVP
TJ
Enable Pin Current
Oscillator Frequency
Schottky Forward Drop
Schottky Leakage Current
Overvoltage Protection
Overtemperature
Threshold Shutdown
VEN = 10V
ID = 150mA
VR = 30V
(nominal voltage)
Hysteresis
20
40
1.05 1.2 1.35
0.8
1
4
30
32
34
150
10
Units
V
V
mA
µA
V
V
nA
%
%
%
A
mV
µA
V
V
µA
MHz
V
µA
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, TJ(max),
the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. 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. ISD = IVIN.
August 2004
3
M9999-081104
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