SEME-LAB LM137ASMD05

NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
IP137SMD05
/
IP137ASMD05 /
IP137HVSMD05 /
IP137AHVSMD05/
LM137SMD05
LM137ASMD05
LM137HVSMD05
LM137AHVSMD05
FEATURES
•
•
•
•
•
APPLICATIONS
1.5A Output Current Guaranteed
Internal Thermal Overload Protection
Output Short Circuit Protected
Hermetic Ceramic Surface Mount Package
Screening Options Available
•
•
•
Adjustable Power Supplies
System Power Supplies
Precision Voltage / Current Regulators
DESCRIPTION
The 137 Series regulators are adjustable 3 terminal voltage regulators capable of supplying in excess of -1.5A over an output
voltage range of -1.2V to -37V (HV Series, -47V). The regulators are exceptionally easy to apply requiring only 2 external
resistors to set the output voltage and 1 output capacitor for frequency compensation.
Every effort has been made to make these devices easy to use and difficult to damage. Internal current limiting and power
limiting coupled with true thermal limiting prevents damage due to overloads or shorts, even if the regulators are not fastened
to a heat sink.
ABSOLUTE MAXIMUM RATINGS (TC = 25°C unless otherwise stated)
Standard
HV Series
VI - VO
Input – Output Voltage Differential
IO
PD
TJ
Tstg
Output Current
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
40V
50V
Internally Limited
Internally Limited
-55 to +150°C
-65 to +150°C
THERMAL PROPERTIES
Symbols
Parameters
RθJC
Thermal Resistance, Junction To Case
Min.
Typ.
Max.
Units
3.5
°C/W
** This datasheet supersedes document 2831
Semelab Limited reserves the right to change test conditions, parameter limits and package dimensions without notice.
Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However
Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to
verify that datasheets are current before placing orders.
Semelab Limited
Coventry Road, Lutterworth, Leicestershire, LE17 4JB
Telephone +44 (0) 1455 556565
Fax +44 (0) 1455 552612
Email: [email protected]
Website: http://www.semelab-tt.com
Document Number 8377
Issue 1
Page 1 of 5
NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS(1)(3) (TC = 25°C unless otherwise stated)
LM137, IP137, LM137HV, IP137HV
Symbols
Parameters
VREF
Reference Voltage
Test Conditions
Min.
Typ
Max.
-1.225
-1.250
-1.275
• -1.200 -1.250
-1.300
0.010
0.020
0.020
0.050
VOUT ≤ 5V
15
25
mV
VOUT ≥ 5V
0.3
0.5
%
IOUT = 10mA
10mA ≤ IOUT ≤ IMAX, P ≤ PMAX,
3V ≤ (VIN-VOUT) ≤ VMAX
∆VOUT
∆VIN
∆VOUT
∆IOUT
Line Regulation (2)
Load Regulation (2)(3)
Thermal Regulation
Ripple Rejection
3V ≤ (VIN-VOUT) ≤ VMAX,
IOUT = 10mA
10mA ≤ IOUT ≤ IMAX
VOUT = -10V
∆IADJ
IMIN
ICL
Current Limit
∆VOUT
∆TEMP
∆VOUT
∆TIME
en
Minimum Load Current
%/V
•
20
50
mV
VOUT ≥ 5V
•
0.3
1.0
%
0.002
0.02
%/W
CADJ = 0
60
CADJ = 10µF •
66
dB
77
•
65
100
10mA ≤ IOUT ≤ IMAX
•
0.5
5
3V ≤ (VIN-VOUT) ≤ 40V
•
2
5
3V ≤ (VIN-VOUT) ≤ 50V (HV Series)
•
3
6
(VIN - VOUT) ≤ 40V
•
2.5
5
(VIN - VOUT) ≤ 10V
•
1.2
3
(VIN - VOUT) ≤ 15V
•
1.5
2.2
3.2
(VIN - VOUT) = 40V
•
0.24
0.4
(VIN - VOUT) = 50V (HV Series)
•
0.2
0.4
Adjust Pin Current
Adjust Pin Current Change
V
VOUT ≤ 5V
VIN = -7.92V, IOUT = 1.5A,
PD = 10W, TA = 25°C, 10ms Pulse
f = 120Hz
IADJ
•
Units
•
Temperature Stability
µA
mA
A
0.8
0.6
Long Term Stability
TA = 125°C, 1000Hrs
0.3
RMS Output Noise
(% of VOUT)
TA = 25°C, 10Hz ≤ f ≤ 10KHz
0.003
1.0
%
Notes
The ● denotes the specifications which apply over the full operating temperature range.
(1)
Test conditions unless otherwise stated: VIN - VOUT = 5V, IOUT = 0.5A, PMAX = 10W, IMAX = 1.5A
(2)
Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to heating
effects are covered under thermal regulation specifications. Load regulation is measured at the junction of the wide and narrow portion of
the output lead.
(3)
VMAX = 40V for LM137, IP137, LM137A, IP137A
VMAX = 50V for LM137HV, IP137HV, LM137AHV, IP137AHV
Semelab Limited
Coventry Road, Lutterworth, Leicestershire, LE17 4JB
Telephone +44 (0) 1455 556565
Fax +44 (0) 1455 552612
Email: [email protected]
Website: http://www.semelab-tt.com
Document Number 8377
Issue 1
Page 2 of 5
NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS(1)(3) (TC = 25°C unless otherwise stated)
LM137A, IP137A, LM137AHV, IP137AHV
Symbols
Parameters
Test Conditions
Min.
Typ
Max.
-1.238
-1.250
-1.262
● -1.220 -1.250
-1.280
0.005
0.010
0.010
0.030
VOUT ≤ 5V
5
25
mV
VOUT ≥ 5V
0.1
0.5
%
IOUT = 10mA
VREF
Reference Voltage
10mA ≤ IOUT ≤ IMAX, P ≤ PMAX,
3V ≤ (VIN-VOUT) ≤ VMAX
∆VOUT
∆VIN
∆VOUT
∆IOUT
Line Regulation (2)
Load Regulation (2)(3)
Thermal Regulation
Ripple Rejection
10mA ≤ IOUT ≤ IMAX
∆IADJ
IMIN
ICL
VOUT = -10V
∆TEMP
∆VOUT
∆TIME
en
Adjust Pin Current Change
Minimum Load Current
%/V
VOUT ≤ 5V
●
10
50
mV
VOUT ≥ 5V
●
0.2
1.0
%
0.002
0.02
%/W
CADJ = 0
CADJ = 10µF ●
60
66
70
80
dB
●
65
100
10mA ≤ IOUT ≤ IMAX
●
0.2
2
3V ≤ (VIN-VOUT) ≤ 40V
●
1.0
5
3V ≤ (VIN-VOUT) ≤ 50V (HV Series)
●
2
6
(VIN - VOUT) ≤ 40V
●
2.5
5
(VIN - VOUT) ≤ 10V
●
1.2
3
(VIN - VOUT) ≤ 15V
●
1.5
2.2
3.2
(VIN - VOUT) = 40V
●
0.24
0.4
1.0
(VIN - VOUT) = 50V (HV Series)
●
0.2
0.4
0.8
0.6
1.5
1.0
Adjust Pin Current
Current Limit
∆VOUT
●
VIN = -7.92V, IOUT = 1.5A,
PD = 10W, TA = 25°C, 10ms Pulse
f = 120Hz
IADJ
V
3V ≤ (VIN-VOUT) ≤ VMAX,
IOUT = 10mA
Units
Temperature Stability
●
Long Term Stability
TA = 125°C, 1000Hrs
0.3
RMS Output Noise
(% of VOUT)
TA = 25°C, 10Hz ≤ f ≤ 10KHz
0.003
µA
mA
A
%
Notes
The ● denotes the specifications which apply over the full operating temperature range.
(1)
(2)
(3)
Test conditions unless otherwise stated: VIN - VOUT = 5V, IOUT = 0.5A, PMAX = 10W, IMAX = 1.5A
Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to heating
effects are covered under thermal regulation specifications. Load regulation is measured at the junction of the wide and narrow portion of
the output lead.
VMAX = 40V for LM137, IP137, LM137A, IP137A
VMAX = 50V for LM137HV, IP137HV, LM137AHV, IP137AHV
Semelab Limited
Coventry Road, Lutterworth, Leicestershire, LE17 4JB
Telephone +44 (0) 1455 556565
Fax +44 (0) 1455 552612
Email: [email protected]
Website: http://www.semelab-tt.com
Document Number 8377
Issue 1
Page 3 of 5
NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
APPLICATIONS INFORMATION
High Stability Regulator
Multiple Tracking Regulators
The output stability, load regulation, line regulation,
thermal regulation, temperature drift, long term drift,
and noise, can be improved by a factor of 6.6 over
the standard regulator configuration. This assumes a
zener has 20PPM/°C maximum drift and about 10
times lower noise than the regulator.
In the application shown below, regulator #2 to “N” will
track regulator #1 to within ±24mV initially, and to
±60mV over all load line, and temperature conditions.
R2
C3
10µF
2µF
*
7V
C1
1µF
SOLID
TANTALUM
1µF
1N4002
V IN
R1
120 Ω
ADJ
VIN
–VIN
V OUT
–VOUT1
REG #1
ADJ
–V IN
R2
SOLID
TANTALUM
R1
1k
1%
R3
1.5k
1%
If any regulator output is shorted to ground, all other
outputs will drop to -2V. Load regulation of regulators #2
to “N” will be improved by VOUT / 1.25V compared to a
standard, so regulator #1 should be the one which has
the lowest load current.
IP137
IP137
V OUT
IP137
IP137
( VOUT )
– 908 Ω
* R2 =
9.08 x 10 -3
–V OUT
1µF
2µF
SOLID
TANTALUM
1N4002
ADJ
V
V
IN
OUT
–VOUT2
REG #2
IP137
IP137
Dual Tracking Supply
IP137
IP137
1µF
2µF
SOLID
TANTALUM
1N4002
+V IN
V IN
ADJ
V OUT
+V
V IN
OUT
ADJ
–VOUT N
REG #N
R1**
100 Ω
1%
10µF
V OUT
*
2.2
µF
IP137
IP137
D1
1N4002
Current Regulator
R2
5k
1%
R3
5k
10µF
R4
5k
1%
R5**
100 Ω
1%
2.2
µF
ADJ
D2
1N4002
ADJ
–V IN
VIN
C1
1µF
SOLID
TANATALUM
*
V OUT
(–)
V IN
RS
IP137
IP137
–VOUT
I
(+)
V OUT
I = 65µA +
1.25 V
RS
0.8 Ω ≤ R S ≤ 250Ω
IP137
IP137
* Solid Tantalum
** R1 & R5 maybe trimmed slightly to improve tracking
Semelab Limited
Coventry Road, Lutterworth, Leicestershire, LE17 4JB
Telephone +44 (0) 1455 556565
Fax +44 (0) 1455 552612
Email: [email protected]
Website: http://www.semelab-tt.com
Document Number 8377
Issue 1
Page 4 of 5
NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
MECHANICAL DATA
Dimensions in mm (inches)
7.54 (0.296)
0.76 (0.030)
min.
2.41 (0.095)
3.175 (0.125)
Max.
2.41 (0.095)
1
3
10.16 (0.400)
5.72 (.225)
0.76
(0.030)
min.
3.05 (0.120)
0.127 (0.005)
2
0.127 (0.005)
0.127 (0.005)
16 PLCS
0.50(0.020)
0.50 (0.020)
max.
7.26 (0.286)
SMD05 (TO276AA)
Pin 1 = ADJ.
Pin 2 = VIN
Pin 3 = VOUT
Semelab Limited
Coventry Road, Lutterworth, Leicestershire, LE17 4JB
Telephone +44 (0) 1455 556565
Fax +44 (0) 1455 552612
Email: [email protected]
Website: http://www.semelab-tt.com
Document Number 8377
Issue 1
Page 5 of 5