Document
Ordering number : ENN6109A
Monolithic Digital IC
LB1987, 1987D, 1987M, 1987H
Three-Phase Brushless Motor Driver for VCR Capstan Motors
Overview
The LB1987, LB1987D, LB1987M, and LB1987H are optimal capstan motor drivers for use in VCR sets.
3147B-DIP28H
[LB1987D]
28 15
Functions
• Three-phase full-wave current-linear drive • Torque ripple correction circuit (fixed correction ratio) • Current limiter circuit with control characteristics gain switching • Oversaturation prevention circuits for both the upper and lower sides of the output stage (No external capacitors are required.) • FG amplifier • Thermal shutdown circuit
R1.7
12.7 11.2
8.4
1
20.0 27.0
14
1.93
1.78
0.6
1.0
4.0
4.0
SANYO: DIP28H
3129-MFP36S-LF
[LB1987M]
36 19
Package Dimensions
3240-QFP34H-B
15.3 2.25 2.5max 9.2 10.5 7.9
unit: mm
1.6 1.6
23
13.2 10.0 4.8 0.8
18 17
1.0
1.0
0.4
0.8
0.85
0.1
0.2
SANYO: MFP36S-LF
24
13.2 10.0 0.8
0.35
8.4
3233-HSOP28H
[LB1987H]
15.3 0.65 6.2 2.7
34
7
1
6 28
15
0.1 1.0
4.0
2.2
1
0.85 0.8 0.3
14
0.25 1.3
2.5max
2.25
SANYO: HSOP28H
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
81299RM (OT) No. 6109-1/17
0.1
10.5
7.9
4.9
SANYO: QFP34H-B
0.65
[LB1987]
1
18
0.25
0.4
LB1987, 1987D, 1987M, 1987H
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Maximum output current Symbol VCC max VS max IO max (LB1987) Allowable power dissipation Pd max (LB1987D) (LB1987M) (LB1987H) Operating temperature Storage temperature Topr Tstg Conditions Ratings 7 24 1.3 0.77 3.0 0.95 0.77 –20 to +75 –55 to +150 Unit V V A W W W W °C °C
Allowable Operating Ranges at Ta = 25°C
Parameter Supply voltage Hall input amplitude GSENSE pin input range Symbol VS VCC VHALL VGSENSE Between Hall inputs Relative to the control system ground Conditions Ratings 5 to 22 4.5 to 5.5 ±30 to ±80 –0.20 to +0.20 Unit V V mVo-p V
Electrical Characteristics at Ta = 25°C, VCC = 5 V, VS = 15 V
Parameter VCC current drain [Outputs] Vosat1 Output saturation voltage Vosat2 Output leakage current [FR] FR pin input threshold voltage FR pin input bias current [Control] CTLREF pin voltage CTLREF pin input range CTL pin input bias current CTL pin control start voltage CTL pin control switching voltage CTL pin control Gm1 CTL pin control Gm2 [Current Limiter] LIM current limiter offset voltage LIM pin input bias current LIM pin current limit level [Hall Amplifiers] Input offset voltage Input bias current Common-mode input voltage Torque ripple correction ratio [FG Amplifier] FG amplifier input offset voltage FG amplifier input bias current Voff(FG) Ib(FG) –8 –100 0.5 0.5 4.0 +8 mV nA V V Voff(HALL) Ib(HALL) Vcm(HALL) TRC At the bottom and top of the Rf waveform when IO = 200 mA. (Rf = 0.5 Ω) (Note 1) 1.3 9 –6 1.0 +6 3.0 3.3 mV µA V % Voff(LIM) Ib(LIM) ILIM Rf = 0.5 Ω, VCTL = 5 V, IO ≥ 10 mA With the Hall input logic states fixed at (U, V, W = H, H, L) VCTL = 5 V, VCREF: open, VLIM = 0 V Rf = 0.5 Ω, VCTL = 5 V, VLIM = 2.06 V With the Hall input logic states fixed at (U, V, W = H, H, L) 140 –2.5 830 900 970 200 260 mV µA mA VCREF VCREFIN Ib(CTL) VCTL(ST) VCTL = 5 V, CTLREF: open Rf = 0.5 Ω, VLIM = 5 V, IO ≥ 10 mA With the Hall input logic states fixed at (U, V, W = H, H, L) 2.20 3.00 0.52 1.20 2.35 3.15 0.65 1.50 2.37 1.70 2.50 2.63 3.50 8.0 2.50 3.30 0.78 1.80 V V µA V V A/V A/V VFSR Ib(FSR) 2.25 –5.0 2.50 2.75 V µA IOleak IO = 500 mA, Rf = 0.5 Ω, Sink + Source, VCTL = VLIM = 5 V (With saturation prevention) IO = 1.0 A, Rf = 0.5 Ω, Sink + Source, VCTL = VLIM = 5 V (With saturation prevention) 2.1 2.6 2.6 3.5 1.0 V V mA Symbol ICC Conditions RL = ∞, VCTL = 0 V (Quiescent) Ratings min typ 12 max 18 Unit mA
VCTL(ST2) Rf = 0.5 Ω, VLIM = 5 V Rf = 0.5 Ω, ∆IO = 200 mA Gm1(CTL) With the Hall input logic states fixed at (U, V, W = H, H, L) Gm2(CTL) Rf = 0.5 Ω, ∆VCTL = 200 mV With the Hall input logic states fixed at (U, V, W = H, H, L)
FG amplifier output saturation voltage Vosat(FG) At the sink side internal pull-up resistor. FG amplifier common-mode input voltage VCM(FG)
Continued on next page. No. 6109-2/17
LB1987, 1987D, 1987M, 1987H
C.