MIC38C42/3/4/5 Micrel, Inc.
M9999-091107 4 September 2007
Electrical Characteristics
V
DD
= 15V, Note 4; R
T
= 11.0k; C
T
= 3.3nF; –40°C ≤ T
A
≤ 85°C; unless noted
Parameter Test Conditions Min Typ Max Units
Reference Section
Output Voltage T
A
= 25°C, I
O
= 1mA 4.90 5.00 5.10 V
Line Regulation 12V ≤ V
DD
≤ 18V, I
O
= 5µA, Note 6 2 20 mV
Load Regulation 1 ≤ I
O
≤ 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, T
A
= 25°C, Note 1 50 µV
Long Term Stability T
A
= 125°C, 1000 hrs., Note 1 5 25 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 ≤ V
DD
≤ 18V, Note 6 0.2 1.0 %
Temp. Stability T
MIN
≤ T
A
≤ T
MAX
, Note 1 0.04 %/°C
Clock Ramp T
A
= 25°C, V
RT/CT
= 2V 7.7 8.4 9.0 mA
Reset Current T
A
= T
MIN
to T
MAX
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 ≤ V
O
≤ 4V 65 90 dB
Unity Gain Bandwidth Note 1 0.7 1.0 MHz
PSRR 12 ≤ V
DD
≤ 18V 60 dB
Output Sink Current V
FB
= 2.7V, V
COMP
= 1.1V 2 14 mA
Output Source Current V
FB
= 2.3V, V
COMP
= 5V –0.5 –1 mA
V
OUT
High V
FB
= 2.3V, R
L
= 15k to ground 5 6.8 V
V
OUT
Low V
FB
= 2.7V, R
L
= 15k to V
REF
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, 38C42/3/4/5 (I
OUT
) ............................. 0.5A
Storage Temperature (T
A
) ......................... –65°C to +150°C
Operating Ratings
Junction Temperature (T
J
) ......................................... 150°C
Package Thermal Resistance
8-Pin Plastic DIP (θ
JA
) .......................................125°C/W
8-Pin MSOP (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
