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MIC38HC42 Datasheet(PDF) 4 Page - Micrel Semiconductor

Part No. MIC38HC42
Description  BiCMOS 1A Current-Mode PWM Controllers
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC38HC42 Datasheet(HTML) 4 Page - Micrel Semiconductor

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MIC38HC42/3/4/5
Micrel, Inc.
M9999-042205
4
April 2005
Electrical Characteristics
V
DD = 15V, Note 4; RT = 9.09kΩ; CT = 3.3nF; –40°C ≤ TA ≤ 85°C; unless noted
Parameter
Test Conditions
Min
Typ
Max
Units
Reference Section
Output Voltage
T
A = 25°C, IO = 1mA
4.90
5.00
5.10
V
Line Regulation
12V ≤ VDD ≤ 18V, IO = 5µA, Note 6
220
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
T
A = 125°C, 1000 hrs., Note 1
525
mV
Output Short Circuit
–30
–80
–180
mA
Oscillator Section
Initial Accuracy
T
A = 25°C, Note 5
49
52
55
kHz
Voltage Stability
12 ≤ VDD ≤ 18V, Note 6
0.2
1.0
%
Temp. Stability
T
MIN ≤ TA ≤ TMAX, Note 1
0.04
%/°C
Clock Ramp
T
A = 25°C, VRT/CT = 2V
7.7
8.4
9.0
mA
Reset Current
T
A = TMIN to TMAX
7.2
8.4
9.5
mA
Amplitude
V
RT/CT peak to peak
1.9
Vp-p
Error Amp Section
Input Voltage
V
COMP = 2.5V
2.42
2.50
2.58
V
Input Bias Current
V
FB = 5.0V
–0.1
–2
µA
A
VOL
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
V
FB = 2.7V, VCOMP = 1.1V
2
14
mA
Output Source Current
V
FB = 2.3V, VCOMP = 5V
–0.5
–1
mA
V
OUT High
V
FB = 2.3V, RL = 15k to ground
5
6.8
V
V
OUT Low
V
FB = 2.7V, RL = 15k to VREF
0.1
1.1
V
Absolute Maximum Ratings
Zener Current (V
DD) ................................................... 30mA
Operation at
18V may require
special precautions (Note 6).
Supply Voltage (V
DD), Note 6 ....................................... 20V
Switch Supply Voltage (V
D) .......................................... 20V
Current Sense Voltage (V
ISNS) ..................... –0.3V to 5.5V
Feedback Voltage (V
FB) ................................ –0.3V to 5.5V
Output Current, 38HC42/3/4/5 (I
OUT) .............................. 1A
Operating Junction Temperature (T
J) ....................... 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
Storage Temperature (T
A) ....................... –65°C to +150°C


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