OMNI OM1850STM, OM1850NKM, OM1850NMM Datasheet

OM1850NKM OM1850STM

OM1850NMM

3 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-88646

Three Terminal, Positive Adjustable

Low Dropout Voltage Regulator In

Hermetic Packages

See Mechanical Outline

FEATURES

•Similar To Industry Standard LT1085

•Approved To DESC Standardized Military Drawing Number 5962-88646

•Adjustable Output Voltage

•Built In Thermal Overload Protection

•Short Circuit Current Limiting

•Maximum Output Voltage Tolerance is Guaranteed To ±1%

•Guaranteed Dropout Voltage At Multiple Current Levels

DESCRIPTION

This three terminal positive adjustable voltage regulator is designed to provide 3.0A with higher efficiency than conventional voltage regulators. This device is designed to operate to 1 Volt input to output differential and the dropout voltage is specified as a function of load current. Supplied in easy-to-use hermetic TO-257, SMD-1 or TO-3 packages, this device is ideally suited for Military applications where small size and high reliability is required.

ABSOLUTE MAXIMUM RATINGS @ 25°C

Power Dissipation (Pd) . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	Internally Limited
Input - Output Voltage Differential .	. . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . 35 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . .		- 55°C to + 150°C
Storage Temperature Range		- 65°C to + 150°C
	. . . . . . . . . . . . . . . . . . . . . . . . . . .		3.3
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . .		. . . . . . . . 300°C
Thermal Resistance:
θJC (SMD-1) . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 3.5°C/W
θJA (SMD-1) . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 3.5°C/W
θJC (TO-257) . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 4.2°C/W
θJA (TO-257). . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 42°C/W
θJC (TO-3). . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 3.0°C/W
θJA (TO-3) . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 35°C/W
Maximum Output Current . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . 3.0 A
Recommended Operating Conditions:
Output Voltage Range . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .3.3V to 15 V
Ambient Operating Temperature Range (TA). . . . . . . . . . . . . . . . . . .		- 55°C to + 125°C
Input Voltage Range. . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 5V to 25 V
a
1 08 R4	3.3 - 79
Supersedes 0 03 R3

OM1850STM OM1850NMM OM1850NKM

ELECTRICAL CHARACTERISTICS -55°C ≤ TA ≤ 125°C (unless otherwise specified)

Parameter	Symbol			Test Conditions		Min.	Max.	Unit
Reference Voltage		VREF		VIN - VOUT = 3.0 V, TA = 25° C		1.238	1.262	V
				IOUT = 10 mA
				1.5 V ≤ VIN - VOUT ≤ 25 V,	•	1.220	1.270	V
				10 mA ≤ IOUT ≤ 2.0 A
Line Regulation		∆VOUT		1.5 V ≤ VIN - VOUT ≤ 15 V,			0.2	%
(Note 1)		∆VIN		IOUT = 10 mA, TA = 25° C
				15 V ≤ VIN - VOUT ≤ 35 V,	•		0.5	%
				IOUT = 10 mA
Load Regulation		∆VOUT		VIN - VOUT = 3.0 V, TA = 25° C			0.8	%
(Note 1)		∆IOUT		10 mA ≤ IOUT ≤ 2.0 A
					•		1.0	%
Dropout Voltage		VDO		IOUT = 2.0 A, ∆VREF = 1%	•		1.5	V
Thermal Regulation	-			30 ms pulse, TA = +25° C			0.02	%/W
Ripple Rejection		∆VIN		f = 120 Hz, CAdj = 25 µF,	•	60		dB
		∆VOUT		COUT = 25 µF (tantalum), IOUT = 2.0 A,
				VIN - VOUT = 3.0 V
Adjust Pin Current		IAdj		1.5 V ≤ VIN - VOUT ≤ 25 V,	•		120	µA
				10 mA ≤ IOUT ≤ 2.0 A
Adjust Pin Current Change		∆IAdj		1.5 V ≤ VIN - VOUT ≤ 25 V,	•		5.0	µA
				10 mA ≤ IOUT ≤ 2.0 A
Miminum Load Current		IMin		VIN - VOUT = 24 V	•		10	mA
Current Limit		ILim		VIN - VOUT ≤ 5.0 V	•	3.2		A
				VIN - VOUT = 25 V	•	0.2		A
Temperature Stability		∆VOUT		-55° C ≤ TJ ≤ +125° C	•		1.5	%
(Note 2)		∆T
Long Term Stability		∆VOUT		TA = +125° C, t = 1000 hrs			1.0	%
(Note 2)		∆T

Notes:

1.Line and Load Regulation are measured at a constant junction temperature using a low duty cycle pulse technique. Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 30 W. Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum power dissipation will not be available over the full input/output voltage range.

2.Guaranteed by design, characterization or correlation to other tested parameters.

3.The • denotes the specifications which apply over the full operating temperature range.

3.3
		Part Number Designator
	SMD #		Omnirel		Package
	5962-8864601U		OM1850STM		TO-257 (Isolated)
	5962-8864601N		OM1850NMM		SMD-1 (Non-Isolated)
	5962-8864601X		OM1850NKM		TO-3
			Part Numbering System
			Voltage Regulators		* Package Codes:
			OM-1850-S-T-M
					K= TO-204AA (TO-3)
					M= SMD-1
	Company				T= TO-257AA
					Screening
	Identification
			Part	Package	M= MIL-M 38535
			Number	(see Package codes*)
			S= Isolated
			N= Non isolated

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