English
Language : 

MIC2290_07 Datasheet, PDF (3/13 Pages) Micrel Semiconductor – 2mm × 2mm PWM Boost Regulator with Internal Schotty Diode
◁
Micrel, Inc.
MIC2290
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .......................................................12V
Switch Voltage (VSW)....................................... –0.3V to 34V
Enable Pin Voltage (VEN)................................... –0.3V to VIN
FB Voltage (VFB)...............................................................6V
Switch Current (ISW) .........................................................2A
Storage Temperature (Ts) .........................–65°C to +150°C
ESD Rating(3).................................................................. 2kV
Operating Ratings(2)
Supply Voltage (VIN).......................................... 2.5V to 10V
Ambient Temperature (TJ)......................... –40°C to +125°C
Package Thermal Resistance
2x2 MLF-8 (θJA) .................................................93°C/W
Electrical Characteristics(4)
TA = 25°C, VIN = VEN = 3.6V, VOUT = 15V, IOUT = 40mA, unless otherwise noted. Bold values indicate –40°C ≤ TJ ≤ ±125°C.
Symbol Parameter
Condition
Min Typ Max Units
VIN
Supply Voltage Range
2.5
10
V
VUVLO
Undervoltage Lockout
1.8
2.1
2.4
V
IVIN
Quiescent Current
VFB = 2V, (not switching)
2.5
5
mA
ISD
Shutdown Current
VEN = 0V, Note 5
0.2
1
µA
VFB
Feedback Voltage
(±1%)
(±2%) (Over Temp)
1.227 1.24 1.252
V
1.215
1.265
V
IFB
Feedback Input Current
VFB = 1.24V
–450
nA
Line Regulation
3V ≤ VIN ≤ 5V
0.1
1
%
Load Regulation
5mA ≤ IOUT ≤ 20mA
0.2
%
DMAX
Maximum Duty Cycle
85
90
%
ISW
Switch Current Limit
0.75
A
VSW
Switch Saturation Voltage
ISW = 0.5A
450
mV
ISW
Switch Leakage Current
VEN = 0V, VSW = 10V
0.01
5
µA
VEN
Enable Threshold
Turn on
Turn off
1.5
V
0.4
V
IEN
Enable Pin Current
VEN = 10V
20
40
µA
fSW
Oscillator Frequency
1.05 1.2
1.35
MHz
VD
Schottky Forward Drop
ID = 150mA
0.8
1
V
IRD
Schottky Leakage Current
VR = 30V
4
µA
VOVP
Overvoltage Protection
(nominal voltage)
30
32
34
V
TJ
Overtemperature
Threshold Shutdown
Hysteresis
150
°C
10
°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. The device is not guaranteed to function outside its 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.
October 2007
3
M9999-101907
 ▷