OM7905SM
OM7912SM
OM7915SM
SURFACE MOUNT NEGATIVE FIXED
VOLTAGE REGULATOR
Three Terminal, Fixed Voltage, 1.0 Amp
Precision Negative Regulator In A Hermetic
Surface Mount Package
FEATURES
•
•
•
•
•
•
Hermetic Surface Mount Package
Output Voltages: -5V, -12V, -15V
Output Voltages Set Internally to ±2%
Built-In Thermal Overload Protection
Short Circuit Current Limiting
Product Is Available Hi-Rel Screened
DESCRIPTION
This three terminal negative regulator is supplied in a hermetically sealed surface
mount package. All protective features are designed into the circuit, including thermal
shutdown, current limiting and safe-area control. With heat sinking, they can deliver
1.0 amp of output current. This unit features internally trimmed voltages to ±2% of
nominal voltage. Standard voltages are -5V, -12V and -15V. These units are ideally
suited for Military applications where a hermetic surface mount package is required.
ABSOLUTE MAXIMUM RATINGS
@ 25°C
Power Dissipation (P
d
) (Internally Limited). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 W
Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 35 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C
Lead Temperature (Soldering 10 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280°C
Thermal Resistance: Junction-to-Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18°C/W
MECHANICAL OUTLINE
.450
SQ.
.02 x 45°
.090
MAX.
.035
4
PIN 1
PIN 28
1
26
TOP
.05 X 45°
MAX. 3 PLCS.
SIDE
.009 R. BOTTOM
28 PLCS.
.300
4 PLCS.
.050
24 PLCS.
12
.305
SQ.
18
Pin Connection
Pin 1, 15 thru 28:
OUT
Pin 2, 3, 13, and 14: GND
Pin 4 thru 12:
IN
3.5
4 11 R0
3.5 - 157
OM7905SM OM79012SM OM79015SM
ELECTRICAL CHARACTERISTICS
Parameter
Output Voltage, V
OUT
Part Number
OM7905SM
OM7912SM
OM7915SM
I
O
= 500mA, -55°C ≤T
A
≤ 125°C (unless otherwise specified.)
OM7905SM: V
IN
= -10V; OM7912SM: V
IN
= -19V; OM7915SM: V
IN
= -23V.
Conditions
V
IN
= -7.5V to -20V
V
IN
= -14.5V to -27V
V
IN
= -17.5V to -30V
V
IN
= -7.5V to -20V
OM7905SM
V
IN
= -8.0V to -12V
V
IN
= -14.5V to -27V
OM7912SM
V
IN
= -16V to -22V
V
IN
= -17.5V to -30V
OM7915SM
V
IN
= -20V to -26V
Load Regulation, V
RLOAD
(Note 1)
I
O
= -5mA to -1.0Amp
OM7905SM
I
O
= -250mA to -750mA
I
O
= -5mA to -1.0Amp
OM7912SM
I
O
= -250mA to -750mA
I
O
= -5mA to -1.0Amp
OM7915SM
I
O
= -250mA to -750mA
Standby Current Drain, I
SCD
OM7905SM
OM7912SM
OM7915SM
Standby Current Drain Change
With Line, ∆I
SCD
(Line)
Standby Current Drain Change
With Load, ∆I
SCD
(Load)
Dropout Voltage
Peak Output Current, I
O (pk)
Short Circuit Current, I
DS
(Note 2)
Ripple Rejection
∆VIN
∆VOUT
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Min.
-5.15
-12.36
-15.45
Line Regulation, V
RLINE
(Note 1)
OM7905SM
OM7912SM
OM7915SM
V
IN
= -7.0V to -20V
V
IN
= -14.5V to -27V
V
IN
= -17.5V to -30V
I
O
= 5mA to 1000mA
∆V
OUT
= 100mV, I
O
= 1.0A
T
A
= 25°C
V
IN
= -35V
Max.
-4.85
-11.64
-14.55
20
35
12
20
33
80
24
70
41
82
36
60
35
50
25
45
55
70
26
55
60
110
34
70
3.0
3.5
4.2
4.6
7.2
8.0
0.6
1.0
1.0
0.6
2.5
Units
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
V
A
A
A
dB
dB
dB
dB
dB
dB
µV/V rms
mV
mV
mV
•
•
.70
•
•
•
•
63
60
56
53
53
50
2.0
1.0
2.0
OM7905SM
OM7912SM
OM7915SM
f = 120Hz, ∆V
IN
= -10V
f = 120Hz, ∆V
IN
= 10V
f = 120Hz, ∆V
IN
= 10V
T
A
= 25°C, f = 10Hz to 100kHz
3.5
RMS Output Noise, N
O
(Note 3)
Long Term Stability (Note 3)
∆VIN
∆t
OM7905SM
OM7912SM
OM7915SM
T
A
= 25°C, t = 1000 hrs.
40
75
120
150
Note 1:
Load and line regulation are specified at a constant junction temperature. Pulse testing with low
duty cycle is used. Changes in output voltage due to heating effects must be taken into account separately.
Note 2:
Short Circuit protection is only assured up to V
IN
= -35V.
Note 3:
If not tested, shall be guaranteed to the specified limits.
The • denotes the specifications which apply over the full operating temperature range. If not noted T
A
= 25°C
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