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MIC38C42 Datasheet(PDF) 4 Page - Micrel Semiconductor

Part No. MIC38C42
Description  BiCMOS Current-Mode PWM Controllers
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC38C42 Datasheet(HTML) 4 Page - Micrel Semiconductor

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MIC38C42/3/4/5
Micrel, Inc.
M9999-072805
4
July 2005
Electrical Characteristics
VDD = 15V, Note 4; RT = 11.0k; CT = 3.3nF; –40°C ≤ TA ≤ 85°C; unless noted
Parameter
Test Conditions
Min
Typ
Max
Units
Reference Section
Output Voltage
TA = 25°C, IO = 1mA
4.90
5.00
5.10
V
Line Regulation
12V ≤ VDD ≤ 18V, IO = 5µA, Note 6
2
20
mV
Load Regulation
1 ≤ IO ≤ 20mA
1
25
mV
Temp. Stability
Note 1
0.2
mV/°C
Total Output Variation
Line, Load, Temp.,
Note 1
4.82
5.18
V
Output Noise Voltage
10Hz ≤ f ≤ 10kHz, TA = 25°C, Note 1
50
µV
Long Term Stability
TA = 125°C, 1000 hrs., Note 1
5
25
mV
Output Short Circuit
–30
–80
–180
mA
Oscillator Section
Initial Accuracy
TA = 25°C, Note 5
49
52
55
kHz
Voltage Stability
12 ≤ VDD ≤ 18V, Note 6
0.2
1.0
%
Temp. Stability
TMIN ≤ TA ≤ TMAX, Note 1
0.04
%/°C
Clock Ramp
TA = 25°C, VRT/CT = 2V
7.7
8.4
9.0
mA
Reset Current
TA = TMIN to TMAX
7.2
8.4
9.5
mA
Amplitude
VRT/CT peak to peak
1.9
Vp-p
Error Amp Section
Input Voltage
VCOMP = 2.5V
2.42
2.50
2.58
V
Input Bias Current
VFB = 5.0V
–0.1
–2
µA
AVOL
2 ≤ VO ≤ 4V
65
90
dB
Unity Gain Bandwidth
Note 1
0.7
1.0
MHz
PSRR
12 ≤ VDD ≤ 18V
60
dB
Output Sink Current
VFB = 2.7V, VCOMP = 1.1V
2
14
mA
Output Source Current
VFB = 2.3V, VCOMP = 5V
–0.5
–1
mA
VOUT High
VFB = 2.3V, RL = 15k to ground
5
6.8
V
VOUT Low
VFB = 2.7V, RL = 15k to VREF
0.1
1.1
V
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
Operating Ratings
Junction Temperature (TJ)......................................... 150°C
Package Thermal Resistance
8-Pin Plastic DIP (θJA).......................................125°C/W
8-Pin MM8™ (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


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