3.5 - 47
3.5
Three Terminal, +5V, Low Dropout Precision
Positive Regulator In Hermetic Surface
Mount Package
4 11 R0
SURFACE MOUNT LOW DROPOUT FIXED
VOLTAGE POSITIVE REGULATORS
FEATURES
+5V Output Voltage
Operates Down To 1V Dropout
.015% Line Regulation / .01% Load Regulation Typically
Output Voltage Trimmed to 1%
Hermetic Surface Mount Package
Available Hi-Rel Screened
DESCRIPTION
These three terminal positive fixed voltage regulators are designed to provide 2.0
Amps and 1.0 Amp with higher efficiency than conventional voltage regulators. The
devices are designed to operate to 1 Volt input to output differential and the dropout
voltage is specified as a function of load current. All devices are pin compatible with
older three terminal regulators. Supplied in easy-to-use hermetic surface mount
packages.
ABSOLUTE MAXIMUM RATINGS
@ 25C
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C
Output Current - OM185-5SM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 A
Output Current -
OM186-5SM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 A
Thermal Resistance - OM185-5SM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9C/ W
Thermal Resistance -
OM186-5SM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14C/ W
Lead Temperature (Soldering 10 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280C
MECHANICAL OUTLINE
OM185-5SM
OM186-5SM
.450
SQ.
.300
4 PLCS.
.050
24 PLCS.
.305
SQ.
.02 x 45
.090
MAX.
.05 X 45
MAX. 3 PLCS.
.009 R.
28 PLCS.
.035
PIN 1
PIN 28
BOTTOM
TOP
SIDE
4
1
26
12
18
Pin Connection
Pin 1, 15 thru 28:
IN
Pin 2, 3, 13, and 14: GND
Pin 4 thru 12:
OUT
OM185-5SM - OM186-5SM
3.5
ELECTRICAL CHARACTERISTICS
(T
J
= -55C to +125C)
Parameter
Conditions
Min.
Max.
Units
Output Voltage
3
I
OUT
= 0 mA, T
J
= 25C, V
IN
= 8 V,
OM185/6-5SM
0 I
OUT
I
FULL LOAD
, 6.5 V V
IN
30 V
4.90
5.10
V
Line Regulation
1,2
I
OUT
= 0 mA, T
J
= 25C, 6.5 V V
IN
< 20V
12
mV
OM185/6-5SM
20
Load Regulation
1, 2, 3
V
IN
8 V, 0 I
OUT
I
FULL LOAD
, T
J
= 25C
25
mV
OM185/6-5SM
40
Current Limit
OM185-5SM
V
IN
= 10 V
2.0
A
OM186-5SM
1.0
A
Dropout Voltage
V
OUT
= 50 mV, I
OUT
= I
FULL LOAD
6.5
V
OM185/6-5SM
Quiescent Current
V
IN
30V
20.0
mA
Thermal Regulation
T
A
= 25C, 30 ms pulse
0.01
%/
OM185/6-5SM
Ripple Rejection
f = 120 Hz, C
OUT
= 25 F Tantalum
I
OUT
= I
FULL LOAD
, V
IN
= 8 V
60
dB
Temperature Stability
1.0
%
Long Term Stability
T
A
= 125C, 1000 Hrs.
1.0
%
Note 1: Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing.
Note 2: Line and load regulation are guaranteed up to the maximum power dissipation (OM185-5/20W, OM186-5/10W).
Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum power
dissipation will not be available over the full input/output voltage range.
Note 3: I
FULL LOAD
curve is defined as the minimum value of current limit as a function of input to output voltage.
Note that power dissipation is only achievable over a limited range of input to output voltage.
TYPICAL PERFORMANCE CHARACTERISTICS
OM185-5SM
LOAD REGULATION
OUTPUT VOLTAGE DEVIATION (%)
-0.20
-50
TEMPERATURE (C)
150
0.10
-0.15
-0.10
-0.05
0
0.05
-25
0
25
50
75
100
125
OM186-5SM
LOAD REGULATION
TEMPERATURE (C)
150
-50
-25
25
50
75
125
-0.20
-0.15
-0.10
0
0.05
0.10
I= 1A
-0.05
0
100
OUTPUT VOLTAGE DEVIATION (%)
OM185-5SM
SHORT CIRCUIT CURRENT
SHORT CIRCUIT CURRENT (A)
0
0
INPUT/OUTPUT DIFFERENTIAL (V)
5
10
15
20
25
30
35
1
2
3
4
5
-55C
25C
150C
FULL LOAD
I
OM186-5SM
SHORT CIRCUIT CURRENT
INPUT/OUTPUT DIFFERENTIAL (V)
T
j
= -55C
SHORT CIRCUIT CURRENT (A)
0
5
10
15
20
25
30
0
0.5
1
1.5
2
T
j
= 25C
GUARANTEED
OUTPUT CURRENT
T
j
= 150C
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