MIC3202 Просмотр технического описания (PDF) - Micrel
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MIC3202 Datasheet PDF : 19 Pages
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Micrel, Inc.
MIC3202
Absolute Maximum Ratings (1, 2)
VIN to PGND .................................................. −0.3V to +42V
VLX to PGND........................................ −0.3V to (VIN + 0.6V)
VCS to PGND ....................................... −0.3V to (VIN + 0.3V)
VEN to AGND ....................................... −0.3V to (VIN + 0.3V)
VDIM to AGND ...................................... −0.3V to (VIN + 0.3V)
VCC to PGND ................................................ −0.3V to +6.0V
PGND to AGND .......................................... −0.3V to + 0.3V
Junction Temperature ................................................ 150°C
Storage Temperature Range .................... −60°C to +150°C
Lead Temperature (Soldering, 10sec) ....................... 260°C
Operating Ratings (3)
Supply Voltage (VIN).......................................... 6.0V to 37V
Enable Voltage (VEN) .............................................. 0V to VIN
Dimming Voltage (V ) DIM .................................................................0V to VIN
Junction Temperature (TJ) ........................ −40°C to +125°C
Junction Thermal Resistance
SOIC (θJA) ..........................................................41°C/W
SOIC (θJC).......................................................14.7°C/W
Electrical Characteristics (4)
VIN = VEN = VDIM = 12V; CVCC = 1.0µF; TJ = 25°C, bold values indicate −40°C ≤ TJ ≤ +125°C; unless noted.
Symbol Parameter
Condition
Min. Typ.
Input Supply
VIN
Input Voltage Range (VIN)
IS
Supply Current
ISD
Shut Down Current
UVLO
VIN UVLO Threshold
UVLOHYS VIN UVLO Hysteresis
VCC Supply
6.0
LX Pin = open
1.2
VEN = 0V; TJ = from -40ºC to 85ºC
0.05
VIN Rinsing
3.2
4
500
VCC
VCC Output Voltage
Current Limit
VCS = VIN = 12V, ICC = 10mA
4.5
5
VCS(MAX)
VCS(MIN)
Current-Sense Upper Threshold
Current-Sense Lower Threshold
VCS Hysteresis
VCSHYS
Current-Sense Response Time
Current-Sense Input Current
Frequency
VCS(MAX ) = VIN − VCS
VCS(MIN ) = VIN − VCS
VCS Rising
VCS Falling
VIN - VCS = 200mV
199
212
165
177
35
60
40
FMAX
Maximum Switching Frequency
Dithering (MIC3202)
VDITH
VCS Hysteresis Dithering Range(5)
±6
FDITHER
Frequency Dithering Range(5)
% of Switching Frequency
±12
Enable Input
ENHI
EN Logic Level High
2.0
EN Logic Level Low
ENLO
EN Bias Current
Start-up Time
VEN = 12V
30
VEN = 0V
0.1
From EN Pin going high to LX
going low
30
Max. Units
37.0
V
1.75
mA
5
µA
4.5
V
mV
5.5
V
225
mV
189
mV
mV
ns
3
µA
1
MHz
mV
%
V
0.4
V
60
µA
1
µs
September 2010
3
M9999-091710-A
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