MIC2297 Ver la hoja de datos (PDF) - Micrel
Número de pieza
componentes Descripción
Fabricante
MIC2297 Datasheet PDF : 11 Pages
| |||
Micrel, Inc.
Absolute Maximum Rating (1)
Supply voltage (VIN)........................................................12V
Switch voltage (VSW) ........................................ -0.3V to 50V
Enable pin voltage (VEN)....................................... -0.3 to VIN
FB Voltage (VFB)...............................................................6V
VBRT ..................................................................................6V
Switch Current (ISW) .........................................................3A
Ambient Storage Temperature (TS)............-65°C to +150°C
ESD Rating (3)................................................................ 2KV
MIC2297
Operating Range (2)
Supply Voltage (VIN).......................................... 2.5V to 10V
Maximum Output Voltage (VOUT)....................................40V
Junction Temperature Range (TJ)..............-40°C to +125°C
Package Thermal Impedance
MLF®-10 (θJA).....................................................65°C/W
Electrical Characteristics
TA=25oC, VIN =VEN = 3.6V, VOUT = 30V, 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
Supply Voltage Range
Under-Voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
Feedback Input Current
Line Regulation(5)
Load Regulation(5)
VFB = 200mV (not switching)
VEN = 0V(4)
(+/-5%)
(+/±6.5%) (Over Temp)
VFB = 200mV
2.5V ≤ VIN ≤ 4.5V
5mA ≤ IOUT ≤ 20mA
2.5
10
V
1.8
2.1
2.4
V
4
7
mA
0.1
1
µA
190
200
210
mV
187
213
-450
nA
0.5
1
%
0.5
%
DMAX
ISW
VSW
ISW
VEN
IEN
VREF
fSW
VOVP
TJ
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Enable Threshold
Enable Pin Current
Brightness Control Accuracy
Oscillator Frequency
Over Voltage protection
Over-Temperature Threshold
Shutdown
VIN 2.5V
VIN = 2.5V, ISW = 0.5A
VEN = 0V, VIN = 10V
TURN ON
TURN OFF
VEN = 10V
VBRT = 0V
VBRT = 1V
VBRT = 5V
VBRT = OPEN
MIC2297-42BML (nominal voltage)
MIC2297-15BML (nominal voltage)
Hysteresis
93
%
1.2
1.7
2.5
A
220
mV
0.01
1
µA
1.5
0.4
V
20
40
µA
0.015
V
0.185 0.2 0.215
0.93
1.0
1.05
0.19
0.2
0.21
525
600
675
KHz
40.5
42
47
V
15
16
18
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, 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.
This device is not guaranteed to operate beyond its specified operating rating.
IC devices are inherently ESD sensitive. Handling precautions required. Human body model.
ISD = IVIN.
Guaranteed by design.
Mach 2008
3
M9999-032708
Share Link: 