MIC38C42A/43A/44A/45A
Micrel, Inc.
Absolute Maximum Ratings
Supply Voltage (V
DD
) .................................................... 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 (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 MM8™
(θ
JA
) ............................................. 250°C/W
8-Pin SOIC
(θ
JA
) ............................................... 170°C/W
Electrical Characteristics
(Note 6)
V
DD
= 15V,
Note 4;
R
T
= 11.0k; C
T
= 3.3nF; –40°C
≤
T
A
≤
85°C; unless noted
Parameter
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temp. Stability
Total Output Variation
Output Noise Voltage
Long Term Stability
Output Short Circuit
Oscillator Section
Initial Accuracy
Voltage Stability
Temp. Stability
Clock Ramp
Reset Current
Amplitude
Error Amp Section
Input Voltage
Input Bias Current
A
VOL
Unity Gain Bandwidth
PSRR
Output Sink Current
Output Source Current
V
OUT
High
V
OUT
Low
V
COMP
= 2.5V
V
FB
= 5.0V
2
≤
V
O
≤
4V
Note 1
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
65
0.7
60
2
–0.3
5
14
–1
6.8
0.1
1.1
2.4
2.50
–0.1
90
1.0
2.58
–2
V
µA
dB
MHz
dB
mA
mA
V
V
T
A
= 25°C,
Note 5
12
≤
V
DD
≤
18V
T
MIN
≤
T
A
≤
T
MAX
,
Note 1
T
A
= 25°C, V
RT/CT
= 2V,
Note 1
V
RT/CT
peak to peak
7.7
47
53
0.2
0.04
8.4
1.9
9.0
59
1.0
kHz
%
%/°C
mA
Vp-p
T
A
= 25°C, I
O
= 1mA
12V
≤
V
DD
≤
18V, I
O
= 5µA
1
≤
I
O
≤
20mA
Note 1
Line, Load, Temp.,
Note 1
10Hz
≤
f
≤
10kHz, T
A
= 25°C,
Note 1
T
A
= 125°C, 1000 hrs.,
Note 1
–30
4.82
50
5
–80
25
–180
4.90
5.00
2
1
0.2
5.18
5.10
20
25
V
mV
mV
mV/°C
V
µV
mV
mA
Test Conditions
Min
Typ
Max
Units
M9999-042205
4
April 2005
MICREL [ MICREL SEMICONDUCTOR ]
