Sanyo LB1687 Specifications

Ordering number:ENN3345

Monolithic Digital IC

LB1687

3-Phase Brushless Motor Driver

Applications

The LB1687 is a 3-phase brushless motor driver IC ideally suited for use in VCR capstan motor, drum motor drive

applications.

Features and Functions

•120° voltage linear type.

•Soft switching type eliminating noises caused by current switching and making the values of external capacitors smaller (comparable to those of chip capacitors).

•On-chip FG amplifier.

•On-chip thermal shutdown circuit.

•The FG signal can be used to detect the rotational speed of a motor so that the hall amplifier gain is changed in two steps, thus reducing torque ripple and noise.

•Motor drivable at voltage down to motor supply voltage 5V.

Package Dimensions

unit:mm
3061-DIP30S
			[LB1687]
30				16
				10.16	8.6
					0.25
1				15
		27.2
				4.25	4.95max
					3.2
1.15	1.78	0.48	0.95	0.51min
				SANYO : DIP30S

Specifications

Absolute Maximum Ratings at Ta = 25˚C

Parameter	Symbol	Conditions	Ratings	Unit
Maximum supply voltage	VCC max1		20	V
	VCC max2		7.0	V
Output supply voltage	VOUT.V.W		22	V
Output current	IOUT		1.5	A
Allowable power dissipation	Pd max		2.1	W
Operating temperature	Topr		–20 to +75	˚C
Storage temperature	Tstg		–55 to +125	˚C

Allowable Operating Ranges at Ta = 25˚C

Parameter	Symbol	Conditions	Ratings	Unit
Supply voltage	VCC1		5 to 18	V
	VCC2		4.3 to 6.5	V

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

22801TN (KT)/3260TA, TS No.3345–1/4

LB1687

Electrical Characteristics at Ta = 25˚C, VCC1=12V, VCC2=5V

Parameter	Symbol	Conditions		Ratings		Unit
			min	typ	max
[Power supply]
Supply current 1	ICC1	VC=0, RL=∞		17	30	mA
Supply current 2	ICC2	VC=0		6.5	9.5	mA
[Output]
Output saturation voltage	VO(sat)1	IOUT=0.5A, sink+source		1.6	2.2	V
	VO(sat)2	IOUT=1.0A, sink+source		2.0	3.0	V
Output TRS voltage	VO(sus)	IOUT=20mA (See note.)	20			V
Output quiescent voltage	VOQ	VC=0	5.8	6.1	6.4	V
[Hall input-output]
Hall amplifier input offset voltage	VH offset		–5		+5	mV
Hall amplifier input bias current	IH bias			1	5	µA
Hall amplifier common-mode input voltage	VH ch		1.3		3.7	V
range
Hall input-output voltage gain	GVHO1			56		dB
	GVHO2			43		dB
[Control-output]
Control-output drive gain	GVCO		38	41	44	dB
Control-output CH difference	GVCO		–2		+2	dB
[FG amplifier]
FG amplifier input offset voltage	VFG offset		–8		+8	mV
Open-loop voltage gain	GVFG	f=1kHz		60		dB
Source output saturation voltage	VFG OU	IO=2mA	3.7			V
Sink output saturation voltage	VFG OD	IO=–2mA			1.3	V
Common-mode signal rejection ratio	CHR	(See note.)		80		dB
FG amplifier common-mode input voltage range	VFG CH		0		3.5	V
Phase margin		(See note.)		20		deg.
[Motor detection]
Motor detection amplifier hysteresis width			35	50	65	mV
CR pin threshold voltage		VCR changes from LOW to HIGH.	2.35	2.5	2.65	V
Thermal shutdown temperature	TSD	(See note.)	150	180	210	˚C
Thermal shutdown hysteresis	TSD	(See note.)		15		˚C

Note : Values shown are design targets only. No measurements have been taken.

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