LM337T/NOPB

IC REG LIN NEG ADJ 1.5A TO220-3

LM337T/NOPB is a 3-terminal adjustable negative voltage linear regulator with 1.5A output current, -1.25V to -37V output range, TO-220 package, featuring thermal overload and short-circuit protection.Checked against the datasheet

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Technical parameters

Key specs

Output voltage-1.25 ~ -37 V

Output current1.5 AMax

Input voltage-300 mV ~ 40 V

Dropout voltage2.7 VMax

Quiescent current1.55 mAMax

Datasheet-verified parameters

22 items

Parameter	Value and test conditions	Source
Output Voltage	-1.25V to -37V
Output Current	1.5A
Input Voltage Range	Input-output voltage differential: -0.3V to 40V
Dropout Voltage	~1.2V to ~2.7V (depending on temperature and load current)
Quiescent Current	~0.32mA to ~1.55mA (depending on input-output differential and temperature)
Package	TO-220 (NDE)
Operating Temperature	0°C to 125°C
Grade	Commercial (LM337-N)
RoHS	ROHS Exempt
Reference Voltage	Typ: -1.25V, Min: -1.213V, Max: -1.287V (at Tj=25°C, 3V ≤ \|VIN-VOUT\| ≤ 40V, 10mA ≤ IOUT ≤ IMAX)
Line Regulation	Typ: 0.01%/V, Max: 0.04%/V (at Tj=25°C, 3V ≤ \|VIN-VOUT\| ≤ 40V, IL=10mA)
Load Regulation	Typ: 0.3%, Max: 1% (at Tj=25°C, 10mA ≤ IOUT ≤ IMAX)
Ripple Rejection Ratio	Typ: 60dB (at VOUT=-10V, f=120Hz); Typ: 77dB (with CADJ=10μF)
Current Limit	Min: 1.5A, Typ: 2.2A, Max: 3.7A (at \|VIN-VOUT\| ≤ 15V, NDE package)
Minimum Load Current	Typ: 2.5mA, Max: 10mA (at \|VIN-VOUT\| ≤ 40V)
Adjustment Pin Current	Typ: 65μA, Max: 100μA
RMS Output Noise	Typ: 0.003% of VOUT (at Tj=25°C, 10Hz ≤ f ≤ 10kHz)
Recommended Operating Junction Temperature	0°C to 125°C (for LM337-N)
Absolute Maximum Junction Temperature	0°C to 125°C (for LM337-N)
Storage Temperature	-65°C to 150°C
ESD Rating	±2000V (HBM, per ANSI/ESDA/JEDEC JS-001)
Protection Features	Thermal Overload Protection, Internal Short-Circuit Current Limiting

All parameters (20)ExpandCollapse

Power
Current - Output	1.5A
Voltage Dropout (Max)	-
Voltage - Input (Max)	-40V
Voltage - Output (Max)	-37V
Voltage - Output (Min/Fixed)	-1.2V
AC and DC characteristics
PSRR	77dB (120Hz)
Environment and package
Mounting Type	Through Hole
Operating Temperature	0°C~125°C
Package	Tube
Package / Case	TO-220-3
Supplier Device Package	TO-220-3
Other
Base Product Number	LM337
Control Features	-
Mfr	Texas Instruments
Number of Regulators	1
Output Configuration	Negative
Output Type	Adjustable
Product Status	Active
Protection Features	Over Temperature, Short Circuit
Series	-

Pinout and package

Figure 4-1. TO-220 Plastic Pac… — Package: **TO-220 (NDE)**

Pin	Name	Function
1	ADJ	(Adjust pin)
2	VIN	(Input voltage pin)
3	VOUT	(Output voltage pin)

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DatasheetDatasheet · 2.6 MB · 2026-11-03

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