MIC2297 Micrel Semiconductor, MIC2297 Datasheet - Page 3

• Manufacturer Part Number: MIC2297
• Description: 40V PWM Boost Regulator White LED Driver
• Manufacturer: Micrel Semiconductor

Absolute Maximum Rating
Supply voltage (V
Switch voltage (V
Enable pin voltage (V
FB Voltage (V
V
Switch Current (I
Ambient Storage Temperature (T
ESD Rating
Electrical Characteristics
T
Notes:
Micrel, Inc.
Mach 2008
BRT
A
Symbol
V
V
I
I
V
I
D
I
V
I
V
I
V
f
V
T
VIN
SD
FB
SW
SW
EN
SW
=25
J
IN
UVLO
FB
MAX
SW
EN
REF
OVP
1.
2.
3.
4.
5.
..................................................................................6V
o
C, V
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
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.
I
Guaranteed by design.
SD
= I
IN
(3)
VIN
=V
FB
Parameter
Supply Voltage Range
Under-Voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
Feedback Input Current
Line Regulation
Load Regulation
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
................................................................ 2KV
.
)...............................................................6V
EN
SW
SW
IN
= 3.6V, V
)........................................................12V
) .........................................................3A
) ........................................ -0.3V to 50V
J(Max)
EN
, the junction-to-ambient thermal resistance, θ
)....................................... -0.3 to V
OUT
(5)
(5)
= 30V, I
S
)............-65°C to +150°C
(1)
OUT
= 20mA, unless otherwise noted. Bold values indicate -40°C ≤ T
Condition
V
V
(+/-5%)
(+/±6.5%) (Over Temp)
V
2.5V ≤ V
5mA ≤ I
V
V
V
TURN ON
TURN OFF
V
V
V
V
V
MIC2297-42BML (nominal voltage)
MIC2297-15BML (nominal voltage)
Hysteresis
FB
EN
FB
IN
IN
EN
EN
BRT
BRT
BRT
BRT
2.5V
= 2.5V, I
= 200mV (not switching)
= 200mV
= 0V
= 0V, V
= 10V
= 0V
= 1V
= 5V
= OPEN
OUT
IN
IN
(4)
≤ 4.5V
JA
≤ 20mA
IN
SW
, and the ambient temperature, T
= 10V
3
Operating Range
Supply Voltage (V
Maximum Output Voltage (V
Junction Temperature Range (T
Package Thermal Impedance
= 0.5A
MLF
®
-10 (θ
JA
).....................................................65°C/W
IN
).......................................... 2.5V to 10V
(2)
A
. The maximum allowable power
0.185
0.93
0.19
40.5
Min
190
187
525
2.5
1.8
1.2
1.5
93
15
OUT
)....................................40V
J
)..............-40°C to +125°C
www.DataSheet4U.com
-450
0.01
Typ
200
220
600
150
2.1
0.1
0.5
0.5
1.7
0.2
1.0
0.2
20
42
16
10
4
0.015
0.215
Max
1.05
0.21
M9999-032708
210
213
675
2.4
2.5
0.4
10
40
47
18
J
7
1
1
1
≤ 125°C.
MIC2297
Units
KHz
 m A
mV
mV
µA
nA
µA
µA
°C
°C
%
%
%
V
V
A
V
V
V