Switched Mode Controller for DC Motor Drive

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Datasheet

Switched Mode Controller for DC Motor Drive (uc2637.pdf, 530 KB)
05 Sep 1999 Download

	UC1637	UC2637	UC3637
Operating Supply(Min)(V)	5	5	5
Operating Supply(Max)(V)	36	36	36
Operating Supply Current(mA)	8.5	8.5	8.5
Peak Output Current(A)	0.4	0.4	0.4
Pin/Package	18CDIP,20LCCC	18CDIP,18PDIP,20PLCC,20SOIC	18PDIP,20PLCC,20SOIC
Rating	Military	Military	Catalog
	Samples	Samples	Samples
	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

UC3638: Advanced PWM Motor Controller
UC1637: Switched Mode Controller for DC Motor Drive
UC3770A: High Performance Stepper Motor Drive Circuit

More Related Products

Product Information

Features

Single or Dual Supply Operation
±2.5V to ±20V Input Supply Range
±5% Initial Oscillator Accuracy; ±10% Over Temperature
Pulse-by-Pulse Current Limiting
Under-Voltage Lockout
Shutdown Input with Temperature Compensated 2.5V Threshold
Uncommitted PWM Comparators for Design Flexibility
Dual 100mA, Source/Sink Output Drivers

Description

The UC1637 is a pulse width modulator circuit intended to be used for a variety of PWM motor drive and amplifier applications requiring either uni-directional or bi-directional drive circuits. When used to replace conventional drivers, this circuit can increase efficiency and reduce component costs for many applications. All necessary circuitry is included to generate an analog error signal and modulate two bi-directional pulse train outputs in proportion to the error signal magnitude and polarity.

This monolithic device contains a sawtooth oscillator, error amplifier, and two PWM comparators with ±100mA output stages as standard features. Protection circuitry includes under-voltage lockout, pulse-by-pulse current limiting, and a shutdown port with a 2.5V temperature compensated threshold.

The UC1637 is characterized for operation over the full military temperature range of -55°C to +125°C, while the UC2637 and UC3637 are characterized for -25°C to +85°C and 0°C to +70°C, respectively.

Pricing / Packaging / CAD Design Tools / Samples

			Price ($US)	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price ($US) \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
UC2637DW	ACTIVE	-25 to 85	4.40 \| 100u	SOIC (DW) \| 20	View	25 \| TUBE
UC2637DWG4	ACTIVE	-25 to 85	4.40 \| 100u	SOIC (DW) \| 20	View	25 \| TUBE
UC2637DWTR	ACTIVE	-25 to 85	4.40 \| 100u	SOIC (DW) \| 20	View	2000 \| LARGE T&R	Purchase Samples
UC2637DWTRG4	ACTIVE	-25 to 85	4.40 \| 100u	SOIC (DW) \| 20	View	2000 \| LARGE T&R	Purchase Samples
UC2637J	ACTIVE	-25 to 85	6.64 \| 100u	CDIP (J) \| 18		1 \| TUBE	Contact TI Distributor or Sales Office
UC2637N	ACTIVE	-25 to 85	4.40 \| 100u	PDIP (N) \| 18	View	20 \| TUBE
UC2637NG4	ACTIVE	-25 to 85	4.40 \| 100u	PDIP (N) \| 18	View	20 \| TUBE
UC2637Q	ACTIVE	-25 to 85	4.40 \| 100u	PLCC (FN) \| 20	View	46 \| TUBE	Purchase Samples
UC2637QG3	ACTIVE	-25 to 85	4.40 \| 100u	PLCC (FN) \| 20	View	46 \| TUBE	Purchase Samples
UC2637QTR	ACTIVE	-25 to 85	4.40 \| 100u	PLCC (FN) \| 20	View	1000 \| LARGE T&R	Purchase Samples
UC2637QTRG3	ACTIVE	-25 to 85	4.40 \| 100u	PLCC (FN) \| 20	View	1000 \| LARGE T&R	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status			Reported Distributor Inventory
UC2637DW	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1319 \| 17 Sep	4 Weeks	Americas	Avnet	143
					DigiKey	842
					Mouser Electronics	11
					Newark	75
				Asia	WPI	50
				Europe	Arrow Southern Europe	>1k
UC2637DWG4	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1319 \| 17 Sep	4 Weeks	Europe	EBV Elektronik	250
UC2637DWTR	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	8000 \| 16 Sep	4 Weeks	None Reported View Distributors
	0*	>10k \| 2 Oct	4 Weeks
UC2637DWTRG4	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	8000 \| 16 Sep	4 Weeks	None Reported View Distributors
	0*	>10k \| 2 Oct	4 Weeks
UC2637J	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	259*	>10k \| 19 Sep	8 Weeks	Europe	EBV Elektronik	15
UC2637N	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	2240*		6 Weeks	Americas	Arrow	40
					Avnet	6
					DigiKey	293
					Mouser Electronics	75
					Newark	90
					Rochester Electronics	17
				Asia	WPI	50
				Europe	Avnet-SILICA	10
UC2637NG4	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	2240*		6 Weeks	Europe	Farnell	66
UC2637Q	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1932*	3710 \| 13 Oct	6 Weeks	Americas	Arrow	30
		>10k \| 20 Oct		Americas	Rochester Electronics	920
				Europe	EBV Elektronik	18
				Europe	Spoerle	20
UC2637QG3	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	1932*	3710 \| 13 Oct	6 Weeks	None Reported View Distributors
	1932*	>10k \| 20 Oct	6 Weeks
UC2637QTR	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	2000*	1000 \| 29 Aug	6 Weeks	None Reported View Distributors
		868 \| 2 Sep
		3776 \| 17 Sep
		3709 \| 20 Oct
		>10k \| 27 Oct
UC2637QTRG3	As of 7:42 AM GMT, 20 Aug 2008			As of 7:42 AM GMT, 20 Aug 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	2000*	1000 \| 29 Aug	6 Weeks	None Reported View Distributors
		868 \| 2 Sep
		3776 \| 17 Sep
		3709 \| 20 Oct
		>10k \| 27 Oct
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
UC2637DW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UC2637DWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UC2637DWTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UC2637DWTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UC2637J	TBD	A42 SNPB	N/A for Pkg Type	View	View
UC2637N	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
UC2637NG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
UC2637Q	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
UC2637QG3	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
UC2637QTR	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View
UC2637QTRG3	Green (RoHS & no Sb/Br)	CU SN	Level-2-260C-1 YEAR	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Datasheets

Switched Mode Controller for DC Motor Drive (uc2637.pdf, 530 KB)
05 Sep 1999 Download

Application Notes

U-120 A Simplified Approach to DC Motor Modeling for Dynamic Stability Analysis (slua076.htm, 8 KB)
05 Sep 1999 Abstract
U-112 A High Precision PWM Transconductance Amplifier for Microstepping (slua073.htm, 9 KB)
05 Sep 1999 Abstract
U-102 UC1637/2637/3637 Switched Mode Controller for DC Motor Drive (slua137.htm, 8 KB)
05 Sep 1999 Abstract
DN-53A Design Considerations for Synchronizing Multiple UC3637 PWMs (slua184.htm, 8 KB)
05 Sep 1999 Abstract

Alternative Products - Are similar to UC2637
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
UC3638	Advanced PWM Motor Controller	TI customers also evaluated this product.
UC1637	Switched Mode Controller for DC Motor Drive	TI customers also evaluated this product.
UC3770A	High Performance Stepper Motor Drive Circuit	TI customers also evaluated this product.
UC3637	Switched Mode Controller for DC Motor Drive	TI customers also evaluated this product.

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UC2637 Status:ACTIVE