3-Terminal Adjustable Negative Voltage Regulator D

3-Terminal Adjustable Negative Regulator D337

DESCRIPTIONS：

The D337 are adjustable 3-terminal negative voltage regulators capable of  supplying in  excess of  − 1.5A over an  output voltage 

range of − 1.2 V to − 37V. These regulators are exceptionally easy to apply, requiring only 2 external resistors to set the  output voltage and 1 output capacitor for frequency compensation. The circuit 

design has been optimized for excellent regulation and low thermal transients.

The D337 serve a wide variety of applications including local on-card regulation, programmable-output voltage regulation or

precision current regulation. The D337 is ideal complements to the D337 adjustable positive regulators.

FEATURES

Output voltage adjustable from − 1. 2 V to − 37 V

1.5A output current guaranteed, − 55°C to + 150°C 

Line regulation typically 0.01%/V 

Excellent thermal  regulation, 0. 002%/W 

Excellent rejection of  thermal transients 

Temperature-independent current limit

Internal thermal overload protection

77 dB ripple rejection

50 ppm/°C temperature coefficient

Load regulation typically 0.3 %

P+ Product Enhancement tested 

Output is short circuit protected 

ABSOLUTE MAXIMUM RATINGS *1 

Characteristic	Va lue	Unit
Power dissipation	Internally l imited
Input-output voltage differential	40	V
Operating junction temperature range	0 ～ +125	°C
Storage temperature	-65 ～ +150	°C
Lead temperature (soldering, 10 sec.)	300	°C
Plastic package (soldering, 4 sec.)	260	°C
ESD rating	2k	Volts

ELECTRICAL CHARACTERISTICS *1 

Characteristics	Test conditions	Min	Typ	Max	Unit
Line regulation	Tj=25°C,3V≤∣VIN-VOUT∣≤40V *2 IL=10mA		0.01	0.04	%/V
Load regulation	Tj=25°C, 10mA≤IOUT≤IMAX		0.3	1.0	%
Thermal regulation	Tj=25°C, 10ms pulse		0.003	0.04	%/W
Adjustment pin current			65	100	µ A
Adjustment pin current charge	10mA≤IL≤IMAX,TA=25°C 3V≤∣VIN-VOUT∣≤40V		2	5	µ A
Reference voltage	Tj=25°C *3 3V≤∣VIN-VOUT∣≤40V *3 10mA≤IOUT≤IMAX, P≤PMAX	-1.213 -1.200	-1.250 -1.250	-1.287 -1.300	V
Line regulation	3V≤∣VIN-VOUT∣≤40V *2		0.02	0.07	%/V
Load regulation	10mA≤IOUT≤IMAX *2		0.3	1.5	%
Temperature stability	TMIN≤Tj≤TMAX		0.6		%
Minimum load current	∣VIN-VOUT∣≤40V ∣VIN-VOUT∣≤10V		2.5  1.5	10 6	mA
Current limit	∣VIN-VOUT∣≤15V ∣VIN-VOUT∣=40V, Tj=25°C	1.5 0.15	2.2  0.4	3.7	A
RMS output noise,% of VOU T	Tj=25°C, 10Hz≤f≤10kHz		0.003		%
Ripple rejection ratio	VOU T =-10 V, f=120Hz CADJ =10 µ F	66	60  77		dB
Long-term stability	Tj=125°C, 1000 Hours		0.3	1	%
Thermal resistance, junction to case	SOT223 TO-220  TO-252		2.3  12  4	3 15	° C/W
Thermal resistance, junction to ambient (no heat sink)	SOT223 TO-220  TO-252		35 140 50		° C/W