MIC38HC42 Datasheet, PDF (4/8 Pages) Micrel Semiconductor – BiCMOS 1A Current-Mode PWM Controllers

MIC38HC42/3/4/5
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
Micrel, Inc.
Operating Junction Temperature (T_J) ....................... 150°C
Package Thermal Resistance
8-Pin Plastic DIP (θ_JA) ....................................... 125°C/W
8-Pin MM8™ (θ_JA) ............................................. 250°C/W
8-Pin SOIC (θ_JA) ............................................... 170°C/W
14-Pin Plastic DIP (θ_JA) ....................................... 90°C/W
14-Pin SOIC (θ_JA) ............................................. 145°C/W
Storage Temperature (T_A) ....................... –65°C to +150°C
Electrical Characteristics
V_DD = 15V, Note 4; R_T = 9.09kΩ; C_T = 3.3nF; –40°C ≤ T_A ≤ 85°C; unless noted
Parameter
Test Conditions
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temp. Stability
T_A = 25°C, I_O = 1mA
12V ≤ V_DD ≤ 18V, I_O = 5µA, Note 6
1 ≤ I_O ≤ 20mA
Note 1
Total Output Variation
Line, Load, Temp., Note 1
Output Noise Voltage
Long Term Stability
Output Short Circuit
10Hz ≤ f ≤ 10kHz, T_A = 25°C, Note 1
T_A = 125°C, 1000 hrs., Note 1
Oscillator Section
Initial Accuracy
Voltage Stability
Temp. Stability
Clock Ramp
Reset Current
Amplitude
Error Amp Section
T_A = 25°C, Note 5
12 ≤ V_DD ≤ 18V, Note 6
T_MIN ≤ T_A ≤ T_MAX, Note 1
T_A = 25°C, V_RT/CT = 2V
T_A = T_MIN to T_MAX
V_RT/CT peak to peak
Input Voltage
Input Bias Current
A_VOL
Unity Gain Bandwidth
V_COMP = 2.5V
V_FB = 5.0V
2 ≤ V_O ≤ 4V
Note 1
PSRR
Output Sink Current
Output Source Current
V_OUT High
V_OUT Low
12 ≤ V_DD ≤ 18V
V_FB = 2.7V, V_COMP = 1.1V
V_FB = 2.3V, V_COMP = 5V
V_FB = 2.3V, R_L = 15k to ground
V_FB = 2.7V, R_L = 15k to V_REF
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
M9999-042205
4
April 2005