SANYO LB1861, LB1860N, LB1860, LB1861N Datasheet

Ordering number: EN3519A

Monolithic Digital IC

LB1860,1860M,1861,1861M

Variable Speed Fan Motor Driver

Overview

The LB1860 series ICs are drivers for two-phase unipolar drive DC brushless fan motors. They have functions such as driving, lock protection, restart and speed control.

Features and Functions

. Two-speed mode select function requiring less external component additions: Full speed and Low speed. Or, thermistor-controlled continuous variable-speed function according to ambient operation temperatures.

. → Motor starts rotating at a low speed.

. Motor lock protection and automatic return circuit built in Output transistors: Output current IO = 1.5 A, output circuit protection Zener diodes (LB1860: M-Vz = 57 V/ LB1861: M-Vz = 32 V)

. → Enables low-level noise protection with chip capacitor.

. Built-in thermal shutdown circuit Built-in rotation detect function

. (Drive mode: ``L'', Stop mode: ``H'')

The LB1860 series can be operated from either 12 V or 24 V power supply by changing an external resistor.

. (Strong protection against power supply surge) Connectable direct to a Hall element

Package Dimensions

unit: mm

3098B-DIP10S

[LB1860, 1861]

SANYO : DIP10S

unit: mm

3111-MFP14S

[LB1860M, 1861M]

SANYO : MFP14S

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

73096HA(II)/4060TA,TS No.3519-1/6

LB1860,1860M,1861,1861M

Specifications

Absolute Maximum Ratings at Ta = 25 ° C, ( ): LB1860M, LB1861M

Parameter			Symbol		Conditions			Ratings			Unit
Maximum input current			ICC max		t % 20 ms				200		mA
Output supply voltage			VOUT						Internal		V
Output current			IOUT						1.5		A
RD flow-in current			IRD						10		mA
RD supply voltage			VRD						50		V
Allowable power dissipation			Pd1 max						1.1		W
			Pd2 max		Mounted on 20 × 15 × 1.5 mm glass epoxy board				(0.8)		W
Operating temperature			Topr					±30 to +80			°C
Storage temperature			Tstg					±55 to +125			°C
Allowable Operating Ranges at Ta = 25 ° C
Parameter			Symbol		Conditions			Ratings			Unit
Input current range			ICC					6.0 to 50			mA
Common-mode input voltage range			VICM				0 to VIN ±1.5				V
Electrical Characteristics at Ta = 25 ° C, ICC = 10 mA
Parameter	Symbol				Conditions	min	typ		max		Unit
Output limiting voltage	VOLM1		LB1860, 1860M: IO = 0.1 A			54	57		60		V
			LB1861, 1861M: IO = 0.1 A			30	32		34		V
	VO sat1		IO = 0.5 A				0.95		1.2		V
Output saturation voltage	VO sat2		IO = 1.0 A				1.15		1.5		V
	VO sat3		IO = 1.5 A				1.4		2.0		V
Input voltage	VIN		ICC = 7.0 mA			6.4	6.7		7.0		V
Amp input offset voltage	VOFF					±7.0	0		7.0		mV
Amp input bias current	IBA					±250					nA
RD output saturation	VRD (sat)		IRD = 5 mA				0.15		0.3		V
voltage
C flow-out current	IC1		C = GND			2.7	3.9		5.0		µA
C discharge current	IC2		C = VIN			0.35	0.50		0.65		µA
Comparator input threshold	VTH1					0.77	0.8 VIN		0.83		V
voltage	VTH2					0.44	0.47 VIN		0.50		V
Ct discharge voltage	Vct					0.18	0.2 VIN		0.22		V
Rt input current	IRT		VRT = GND			±440	±350		±240		µA
Rt comparator voltage	VRT		RT = OPEN			0.59	0.62 VIN		0.65		V
Thermal protection circuit	TSD		Design target				180				°C
operating voltage
Thermal protection circuit	TSD		Design target				40				°C
hysteresis
Pin Assignments

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