mic3230 Micrel Semiconductor, mic3230 Datasheet - Page 4

• Manufacturer Part Number: mic3230
• Description: Constant Current Boost Controller For Driving High Power Leds
• Manufacturer: Micrel Semiconductor

Absolute Maximum Ratings
Supply Voltage (V
Enable Pin Voltage........................................... -0.3V to +6V
IADJ Voltage ..................................................................+6V
Lead Temperature (soldering, #sec.)......................... 260°C
Storage Temperature (Ts)..........................-65°C to +150°C
ESD Rating
Electrical Characteristics
V
Micrel, Inc.
Symbol
V
UVLO
I
I
V
I
D
V
I
V
f
f
f
F
V
I
V
January 2009
IN
VIN
SD
ADJ
EN
PWMD
SW
SW
SENSE
DITHER
IN
IADJ
EN
PWM
SENS
OVP
MAX
= 12V; V
.........................................MIC3232= 2kV HB, 100VMM
.................................... MIC3231= 1500V HB, 150VMM
(3)
EN
Parameter
Supply Voltage Range
Under Voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage (at IADJ)
Feedback Input Current
Line Regulation
Load Regulation
Maximum Duty Cycle
Enable Threshold
Enable Pin Current
PWMD Threshold
PWMD Frequency Range
Programmable Oscillator
Frequency
Fixed Frequency Option
Low EMI (MIC3231)
Current Limit Threshold
Voltage
I
Over Voltage Protection
Driver Impedance
..................... MIC3230= 1500V HB, 100VMM
SENSE
= 3.6V; L = 47µH; C = 4.7µF; T
IN
) .....................................................+48V
peak current out
(4)
(1)
Condition
V
switching)
V
Room temperature (3%)
–40°C≤ T
V
V
V
MIC3230 & MIC3232
MIC3231
Turn ON
Turn OFF
VEN = 3.3V
REN = 100kΩ
Turn ON
Turn OFF
Note 5 (L = 47µH; C = 4.7µF)
R
R
R
(MIC3232YMM)
Frequency dither shift from nominal
R
R
SINK
SOURCE
J
FB
EN
FB
IN
OUT
FREQ
FREQ
FREQ
SENSE
SENSE
= 25°C, Bold values indicate –40°C≤ T
= 12V to 24V
> 275mV (to ensure device is not
= 250mV
= 0V
to 2 × V
= 82.5kΩ
= 21kΩ
= 8.25kΩ
= 390Ω
= 390Ω
J
≤ +125°C (5%)
OUT
4
Operating Ratings
Supply Voltage (V
Junction Temperature (TJ)........................ –40°C to +125°C
Junction Thermal Resistance
MSOP-10 (θ
EPAD TSSOP-16 (θ
3mmx3mm MLF
JA
IN
) ..............................................130.5°C/W
)......................................... +6V to +45V
®
-12L (θ
J
JA
≤ +125°C, unless noted.
(2)
242.5
237.5
0.315
1.203
) ...................................36.5°C/W
Min
360
360
3.5
1.5
1.5
90
88
6
0
JA
).............................60.7°C/W
1.15
0.75
0.45
1.24
Typ
250
250
109
400
950
400
±12
250
4.9
3.2
1.2
1.1
0.7
2.4
30
17
2
2
2
M9999-011409-A
257.5
262.5
0.585
1.277
Max
500
440
440
5.5
0.4
0.4
3.5
45
30
10
3
MIC3230/1/2
Units
kHz
kHz
kHz
kHz
mA
mV
mV
µA
µA
µA
Hz
µA
%
%
%
%
%
V
V
V
V
V
V
V
V
Ω
Ω