MIC38C42 データシートの表示（PDF） - Micrel
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MIC38C42 Datasheet PDF : 11 Pages
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MIC38C42/3/4/5
Absolute Maximum Ratings
Zener Current (VDD) ................................................... 30mA
Operation at ≥18V may require
special precautions (Note 6).
Supply Voltage (VDD), Note 6........................................ 20V
Switch Supply Voltage (VD) ........................................... 20V
Current Sense Voltage (VISNS) .......................–0.3V to 5.5V
Feedback Voltage (VFB) .................................–0.3V to 5.5V
Output Current, 38C42/3/4/5 (IOUT) ............................. 0.5A
Storage Temperature (TA)......................... –65°C to +150°C
Micrel, Inc.
Operating Ratings
Junction Temperature (TJ) ......................................... 150°C
Package Thermal Resistance
8-Pin Plastic DIP (θJA) .......................................125°C/W
8-Pin MSOP (θJA) ..............................................250°C/W
8-Pin SOIC (θJA)................................................170°C/W
14-Pin Plastic DIP (θJA) ......................................90°C/W
14-Pin SOIC (θJA)..............................................145°C/W
Electrical Characteristics
VDD = 15V, Note 4; RT = 11.0k; CT = 3.3nF; –40°C ≤ TA ≤ 85°C; unless noted
Parameter
Test Conditions
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temp. Stability
TA = 25°C, IO = 1mA
12V ≤ VDD ≤ 18V, IO = 5µA, Note 6
1 ≤ IO ≤ 20mA
Note 1
Total Output Variation
Line, Load, Temp., Note 1
Output Noise Voltage
Long Term Stability
Output Short Circuit
10Hz ≤ f ≤ 10kHz, TA = 25°C, Note 1
TA = 125°C, 1000 hrs., Note 1
Oscillator Section
Initial Accuracy
Voltage Stability
Temp. Stability
Clock Ramp
Reset Current
Amplitude
Error Amp Section
TA = 25°C, Note 5
12 ≤ VDD ≤ 18V, Note 6
TMIN ≤ TA ≤ TMAX, Note 1
TA = 25°C, VRT/CT = 2V
TA = TMIN to TMAX
VRT/CT peak to peak
Input Voltage
Input Bias Current
AVOL
Unity Gain Bandwidth
VCOMP = 2.5V
VFB = 5.0V
2 ≤ VO ≤ 4V
Note 1
PSRR
Output Sink Current
Output Source Current
VOUT High
VOUT Low
12 ≤ VDD ≤ 18V
VFB = 2.7V, VCOMP = 1.1V
VFB = 2.3V, VCOMP = 5V
VFB = 2.3V, RL = 15k to ground
VFB = 2.7V, RL = 15k to VREF
Min Typ Max Units
4.90 5.00 5.10
V
2
20
mV
1
25
mV
0.2
mV/°C
4.82
5.18
V
50
µV
5
25
mV
–30 –80 –180 mA
49
52
55
kHz
0.2
1.0
%
0.04
%/°C
7.7
8.4
9.0
mA
7.2
8.4
9.5
mA
1.9
Vp-p
2.42 2.50 2.58
V
–0.1 –2
µA
65
90
dB
0.7
1.0
MHz
60
dB
2
14
mA
–0.5 –1
mA
5
6.8
V
0.1
1.1
V
M9999-091107
4
September 2007
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