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MIC2289C Datasheet, PDF (3/10 Pages) Micrel Semiconductor – White LED Driver Internal Schottky Diode and OVP
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Micrel, Inc.
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
Ambient Storage Temperature (Ts) ...........–65°C to +150°C
Schottky Reverse Voltage (VDA).....................................34V
EDS Rating(3).................................................................. 2kV
MIC2289C
Operating Ratings(2)
Supply voltage (VIN) ........................................ 2.5V to +10V
Output Voltage (VIN) ............................................ VIN to VOVP
Junction Temperature (TJ) ........................ –40°C to +125°C
Package Thermal Resistance
2mm x 2mm MLF® (θJA).....................................93°C/W
Thin SOT-23-5 (θJA) ........................................256°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 Units
VIN
VUVLO
IVIN
ISD
VFB
IFB
DMAX
ISW
VSW
ISW
VEN
IEN
fSW
VD
IRD
VOVP
Supply Voltage Range
Under Voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
Feedback Input Current
Line Regulation(6)
Load Regulation(6)
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Enable Threshold
Enable Pin Current
Oscillator Frequency
Schottky Forward Drop
Schottky Leakage Current
Overvoltage Protection
TJ
Overtemperature
Threshold Shutdown
VFB > 200mV, (not switching)
VEN = 0V(5)
(±10%)
VFB = 95Mv
3V ≤ VIN ≤ 5V
5mA ≤ IOUT ≤ 20mA
ISW = 0.5A
VEN = 0V, VSW = 10V
TURN ON
TURN OFF
VEN = 10V
ID = 150mA
VR = 30V
MIC2289CBML-15 only
MIC2289CBML-24 only
MIC2289CBML-34 only
Hysteresis
2.5
10
1.8
2.1
2.4
2.5
5
0.1
1
85
95
105
–450
0.5
0.5
85
90
750
450
0.01
5
1.5
0.4
20
40
1.05 1.2
1.35
0.8
1
4
11.5 14
16.5
19 22.5
26
27
32
37
150
10
V
V
mA
µA
mV
nA
%
%
%
mA
mV
µA
V
V
µA
MHz
V
µA
V
V
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. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model.
4. Specification for packaged product only.
5. ISD = IVIN.
6. Guaranteed by design
September 2006
3
M9999-090706
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