OM7642SM
OM7643SM
OM7644SM
SURFACE MOUNT NEGATIVE VOLTAGE
REGULATOR, 3-TERMINAL, FIXED VOLTAGE
Isolated Hermetic Surface Mount Package
1.5 Amp, -5V, -12V, -15V Negative Voltage
Regulators
FEATURES
•
•
•
•
•
•
•
Small Hermetic Surface Mount Package
Chip Isolated From Package
Output Voltages: -5V, -12V, -15V
Output Voltages Set Internally To ±1%
Built-In Thermal Overload Protection
Short Circuit Current Limiting
Product Is Available Hi-Rel Screened
DESCRIPTION
These three terminal negative regulators are 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 over 1.5 amps of output current. These units feature internally trimmed output
voltages to ±1% of nominal output voltage. Standard voltages are -5V, -12V, and
-15V. These units are ideally suited for Military applications where a hermetically
sealed surface mount package is required.
ABSOLUTE MAXIMUM RATINGS
Input to Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35V
Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Typical Power/Thermal Characteristics:
Rated Power @ 25°C
T
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W
T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance:
θ
JC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
θ
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
Lead Temperature at Case (5 sec)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225°C
3.5
4 11 R1
Supersedes 1 05 R0
3.5 - 139
OM7642SM - OM7644SM
ELECTRICAL CHARACTERISTICS -5
Volt
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
V
IN
= -10V, I
o
= 500mA, -55°C ≤ T
A
≤ 125°C (unless otherwise specified)
Min.
-4.95
Max.
-5.05
-5.15
12
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
Test Conditions
T
A
= 25°C
V
IN
= -7.5V to -20V
•
•
-4.85
Line Regulation
(Note 1)
V
IN
= -7.5V to -20V
V
IN
= -8.0V to -12V
25
5
•
Load Regulation
(Note 1)
I
O
= 250mA to 750 mA
V
RLOAD
I
O
= 5mA to 1.5 Amp
12
20
•
•
25
15
30
2.5
Standby Current Drain
I
SCD
∆I
SCD
(Line)
∆I
SCD
(Load)
V
DO
I
O (pk)
I
DS
∆V
IN
∆V
OUT
N
O
∆V
OUT
∆t
∆V
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= -35V
I
O
= 5mA to 1000mA
V
IN
= -7.0V to -20V
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
•
•
•
1.5
3.0
0.4
0.4
mA
2.5
3.3
1.2
V
A
A
A
dB
dB
•
f =120 Hz,
∆V
IN
= -10V
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
63
2.8
•
60
40
Output Noise Voltage
(Note 3)
Long Term Stability
(Note 3)
µV/V
RMS
75
mV
ELECTRICAL CHARACTERISTICS -12 Volt
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
V
IN
= -19V, I
o
= 500mA, -55°C ≤ T
A
≤ 125°C (unless otherwise specified)
Min.
-11.88
Max.
-12.12
-12.36
20
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
Test Conditions
T
A
= 25°C
V
IN
= -14.5V to -27V
•
•
-11.64
Line Regulation
(Note 1)
V
IN
= -14.5V to -27V
V
IN
= -16V to -22V
50
10
•
Load Regulation
(Note 1)
I
O
= 250mA to 750 mA
V
RLOAD
I
O
= 5mA to 1.5 Amp
30
32
•
•
60
16
30
3.5
Standby Current Drain
I
SCD
∆I
SCD
(Line)
∆I
SCD
(Load)
V
DO
I
O (pk)
I
DS
∆V
IN
∆V
OUT
N
O
∆V
OUT
∆t
∆V
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C, I
O
= 5mA to 1A
V
IN
= -35V
I
O
= 5mA to 1000mA
V
IN
= -14.5V to -27V
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
•
•
•
1.5
4.0
0.8
0.5
mA
1.8
3.3
1.2
V
A
A
A
dB
dB
•
f =120 Hz,
∆V
IN
= -10V
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
56
2.8
•
53
40
3.5
Output Noise Voltage
(Note 3)
Long Term Stability
(Note 3)
µV/V
RMS
120
mV
Notes:
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.
2. Short Circuit protection is only assured up to V
IN
= -35V.
3. If not tested, shall be guaranteed to the specified limits.
The • denotes the specifications which apply over the full operating temperature range.
3.5 - 140
OM7642SM - OM7644SM
ELECTRICAL CHARACTERISTICS -15 Volt
Parameter
Output Voltage
Symbol
V
OUT
V
RLINE
V
IN
= -23V, I
o
= 500mA, -55°C ≤ T
A
≤ 125°C (unless otherwise specified)
Min.
-14.85
Max.
-15.15
-15.45
25
Unit
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
Test Conditions
T
A
= 25°C
V
IN
= -17.5V to -30V
•
•
-14.55
Line Regulation
(Note 1)
V
IN
= -17.5V to -30V
V
IN
= -20V to -26V
50
15
•
Load Regulation
(Note 1)
I
O
= 250mA to 750 mA
V
RLOAD
I
O
= 5mA to 1.5 Amp
25
35
•
•
75
21
45
6.0
Standby Current Drain
I
SCD
∆I
SCD
(Line)
∆I
SCD
(Load)
V
DO
I
O (pk)
I
DS
∆V
IN
∆V
OUT
N
O
∆V
OUT
∆t
∆V
OUT
= 100mV, I
O
=
1.0A
T
A
= 25°C
V
IN
= -35V
I
O
= 5mA to 1000mA
V
IN
= -17.5V to -30V
Standby Current Drain
Change With Line
Standby Current Drain
Change With Load
Dropout Voltage
Peak Output Current
Short Circuit Current
(Note 2)
Ripple Rejection
•
•
•
•
1.5
6.5
0.8
0.5
mA
2.5
3.3
1.2
V
A
A
A
dB
dB
•
f =120 Hz,
∆V
IN
= -10V
(Note 3)
T
A
= 25°C, f =10 Hz to 100KHz
T
A
= 25°C, t = 1000 hrs.
53
2.8
•
50
40
Output Noise Voltage
(Note 3)
Long Term Stability
(Note 3)
µV/V
RMS
150
mV
Notes:
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.
2. Short Circuit protection is only assured up to V
IN
= -35V.
3. If not tested, shall be guaranteed to the specified limits.
The • denotes the specifications which apply over the full operating temperature range.
TYPICAL PERFORMANCE CHARACTERISTICS
PEAK OUTPUT CURRENT
3.5
3
T
j
= -55°C
DROPOUT VOLTAGE
2.5
100
I
OUT
= 1A
RIPPLE REJECTION
Input To Output Differential (V)
2
2.5
2
1.5
1
0.5
∆V
OUT
= 100mV
T
j
= 150°C
1.5
I
OUT
= 500mA
Ripple Rejection (dB)
80
V
OUT
= 5V
Output Current (A)
60
T
j
= 25°C
3.5
40
V
IN
- V = 8V
DC
+3.5V
rms
I
OUT
= 1A
T
j
= 25°C
1
I
OUT
= 0A
0.5
∆V
OUT
= 100MV
20
0
0
5
10
15
20
25
30
35
0
0
-75-50 -25 0
2 5 5 0 7 5 100 125150
10
100
1k
10k
Input To Output Differential (V)
Junction Temperature (°C)
Frequency (Hz)
3.5 - 141
OM7642SM - OM7644SM
TYPICAL PERFORMANCE CHARACTERISTICS
Input bypass capacitors are recommended for stable operation of the OM7642SM series of
regulators over the input voltage and output current ranges. Output bypass capacitors will
improve the transient response of the regulator.
The bypass capacitors, (2.2µF on the input, 1µF on the output) should be ceramic or solid
tantalum which have good high frequency characteristics. If aluminum electrolytics are used,
their values should be 10µF or larger. The bypass capacitors should be mounted with the
shortest leads and, if possible, directly across the regulator terminals.
FIXED OUTPUT REGULATOR
BASIC CURRENT REGULATOR
V
IN
3
OM7642SM
2
V
OUT
V
IN
1 µF*
2.2 µF
3
OM7642SM
1
2
2.2 µF
1
R1*
I
Q
V
OUT
I
OUT =
V
OUT +
I
Q
R
I
_________________
MECHANICAL OUTLINE
.425
PIN CONNECTION
2
1
.100
.200
3
.425
.035 WIDE
FLAT 3 PLCS.
3.5
.350 MIN.
± .020
.115
.160
Pin 1:
Pin 2:
Pin 3:
Case:
V
IN
Adjust
V
OUT
Isolated
.020
.080
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
