The LM337-N-MIL is an adjustable 3-terminal negative voltage regulator capable of supplying
−1.5 A or more currents over an output voltage range of −1.25 V to −37 V. It requires only two external resistors to set the output voltage and one output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM337-N-MIL features internal current limiting, thermal shutdown and safe-area compensation, making it virtually blowout-proof against overloads.
The LM337-N-MIL is an ideal complement to the LM117 and LM317 adjustable positive regulators.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
LM337-N-MIL | SOT-223 (4) | 3.50 mm × 6.50 mm |
TO (3) | 8.255 mm × 8.255 mm | |
TO-220 (3) | 10.16 mm × 14.986 mm |
DATE | REVISION | NOTES |
---|---|---|
June 2017 | * | Initial release. |
PIN | I/O | DESCRIPTION | |||
---|---|---|---|---|---|
NAME | TO-220 | TO | SOT-223 | ||
ADJ | 1 | 1 | 1 | — | Adjust pin |
VIN | 2, TAB | 3, CASE | 2, 4 | I | Input voltage pin for the regulator |
VOUT | 3 | 2 | 3 | O | Output voltage pin for the regulator |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Power dissipation | Internally Limited | |||
Input-output voltage differential | –0.3 | 40 | V | |
Operating junction temperature | 0 | 125 | °C | |
Storage temperature, Tstg | –65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±2000 | V |
MIN | MAX | UNIT | |||
---|---|---|---|---|---|
Operating junction temperature | 0 | 125 | °C |
THERMAL METRIC(1) | LM337-N-MIL | UNIT | |||
---|---|---|---|---|---|
NDT (TO) |
DCY (SOT-223) |
NDE OR NDG (TO-220) |
|||
3 PINS | 3 PINS | 3 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 140(2) | 58.3 | 22.9 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 12 | 36.6 | 15.7 | °C/W |
RθJB | Junction-to-board thermal resistance | — | 7.2 | 4.1 | °C/W |
ψJT | Junction-to-top characterization parameter | — | 1.3 | 2.4 | °C/W |
ψJB | Junction-to-board characterization parameter | — | 7 | 4.1 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | — | — | 1 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
Line regulation | TJ = 25°C, 3 V ≤ |VIN − VOUT| ≤ 40 V(1)
IL = 10 mA |
0.01 | 0.04 | %/V | ||
Load regulation | TJ = 25°C, 10 mA ≤ IOUT ≤ IMAX | 0.3% | 1% | |||
Thermal regulation | TJ = 25°C, 10-ms Pulse | 0.003 | 0.04 | %/W | ||
Adjustment pin current | 65 | 100 | μA | |||
Adjustment pin current charge | 10 mA ≤ IL ≤ IMAX
3 V ≤ |VIN − VOUT| ≤ 40 V, TA = 25°C |
2 | 5 | μA | ||
Reference voltage | 3 V ≤ |VIN − VOUT| ≤ 40 V, (2)
10 mA ≤ IOUT ≤ IMAX, P ≤ PMAX |
TJ = 25°C (2) | −1.213 | −1.25 | −1.287 | V |
−55°C ≤ TJ ≤ 150°C | −1.2 | −1.25 | −1.3 | V | ||
Line regulation | 3 V ≤ |VIN − VOUT| ≤ 40 V, (1) | 0.02 | 0.07 | %/V | ||
Load regulation | 10 mA ≤ IOUT ≤ IMAX, (1) | 0.3% | 1.5% | |||
Temperature stability | TMIN ≤ Tj ≤ TMAX | 0.6% | ||||
Minimum load current | |VIN − VOUT| ≤ 40 V | 2.5 | 10 | mA | ||
|VIN − VOUT| ≤ 10 V | 1.5 | 6 | mA | |||
Current limit | |VIN − VOUT| ≤ 15 V | K, DCY and NDE package | 1.5 | 2.2 | 3.7 | A |
NDT package | 0.5 | 0.8 | 1.9 | A | ||
|VIN − VOUT| = 40 V, TJ = 25°C | K, DCY and NDE package | 0.15 | 0.4 | A | ||
NDT package | 0.1 | 0.17 | A | |||
RMS output noise, % of VOUT | Tj = 25°C, 10 Hz ≤ f ≤ 10 kHz | 0.003% | ||||
Ripple rejection ratio | VOUT = −10 V, f = 120 Hz | 60 | dB | |||
CADJ = 10 μF | 66 | 77 | dB | |||
Long-term stability | TJ = 125°C, 1000 Hours | 0.3% | 1% |