Document
Ordering number : EN5976A
LB1995
Monolithic Digital IC
LB1995
Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive
Overview
The LB1995 is a three-phase brushless motor driver especially suited for CD-ROM spindle motor drives.
Package Dimensions
unit: mm 3227-HSOP24
[LB1995]
15.3 4.3 0.3
Allowable power dissipation, Pd max – W
• Current linear drive • Control V type amplifier with single side control switching pin • Separate power supply for output upper side bias circuit allows low output saturation by boosting this power supply only (useful for 5V power supply types). • Upper side current detection technique reduces loss voltage of current detection resistor. Voltage effect of this resistor reduces internal current drain of IC. • Built-in short braking circuit • Built-in reverse blocking circuit • Hall FG output • Built-in S/S function • Built-in current limiter circuit • Built-in Hall power supply • Built-in thermal shutdown circuit
0.65 7.9 2.25 2.5max
0.25
Functions
24
13
1 0.3 0.8
12 0.85
0.1
SANYO : HSOP24
2.0 1.9
Pd max – Ta
With substrate
1.6
1.2
0.8
IC only
0.4
0 –20
0
Ambient temperature, Ta – °C
20
40
60
75 80
1.3
10.5
100
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
60499RM(KI)/30299RM(KI) No. 5976-1/9
LB1995 Specifications
Maximum Ratings at Ta = 25°C
Parameter Power supply voltage Symbol Conditions Ratings 7.0 14.4 14.4 14.4 Unit V V V V V A W W
VCC1 max VCC2 max VCC3 max
Applied output voltage Applied intput voltage Output current Allowable power dissipation
VO max VIN max IO max
Pd max IC only
VCC1
1.3 0.8 1.9 –20 to +75 –55 to +150
with substrate (114.3 × 76.1 × 1.6 mm3, glass exposy)
Operating temperature Storage temperature Topr Tstg
˚C ˚C
Operating Conditions at Ta = 25°C
Parameter Power supply voltage Symbol Conditions Ratings 4 to 6 Unit V V V
VCC1 VCC2 VCC3 ≥ VCC1
4 to 13.6 4 to 13.6
Sample Application at Ta = 25°C
Parameter 12V type Symbol Conditions Regulated voltage Unregulated voltage Regulated voltage Boost-up voltage or regulated voltage (Note) Ratings 4 to 6 4 to 13.6 4 to 6 4 to 13.6 Unit V V V V
VCC1 VCC2 = VCC3
VCC1 = VCC3
5V type
VCC2
Note: When boost-up voltage is used at VCC2, output can be set to low-saturation.
No. 5976-2/9
LB1995
Electrical Characteristics at Ta = 25°C, VCC1 = 5V, VCC2 = VCC3 = 12V
Parameter [Power supply current] Power supply current Symbol Conditions min Ratings typ max Unit
ICC1 ICC2 ICC3
VC = VCREF VC = VCREF VC = VCREF VS/S = 0V VS/S = 0V VS/S = 0V IO = –0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V IO = 0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V IO = –0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V IO = 0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V RRF = 0.43Ω
1.2
8 0 150 250 200 30 30
mA mA µA µA µA µA
Output idle current
ICC1OQ ICC2OQ ICC3OQ
[Output] Saturation voltage, upper side 1 lower side 1 Saturation voltage, upper side 2 lower side 2 Current limiter setting voltage [Hall amplifier] Common mode input voltage range Input bias current Minimum Hall input level [S/S pin] High level voltage Low level voltage Input current Leak current [Control]
VOU1 VOD1 VOU2 VOD2 VCL VHCOM IHIB VHIN VS/SH VS/SL IS/SI IS/SL IVC IVCREF GVCO VCTH ∆VCTH VH IH TTSD ∆TTSD VBRH VBRL VCCH VCCL
1.0 0.3 0.3 0.3 0.37
V V V V V
VCC–1.0
1
V µA
60
mVP-P VCC1
0.7 200 V V µA µA µA µA times 2.65 150 V mV
2.0
VS/S = 5V VS/S = 0V VC = VCREF = 2.5V VC = VCREF = 2.5V ∆VRF/∆VC VCREF = 2.5V VCREF = 2.5V IH = 5 mA
20 2.35 50 –30
VC pin input current VCREF pin input current
Voltage gain Startup voltage Startup voltage width [Hall power supply] Hall power supply voltage Allowable current [Thermal shutdown] Operating temperature Hysterisis [Short braking] Brake pin at High level Brake pin at Low level [Control switching] CC pin at High level CC pin at Low level
1 1 0.25
0.8
V mA
Design target value Design target value
150
180 15
210
°C °C
4 0
5 1
V V
4 0
5 1
V V
Note: • During S/S OFF (standby), the Hall comparator is at High. • Design target values are not measured.
No. 5976-3/9
LB1995 Truth Table
Hall input
Source –> Sink
U V Phase W –> Phase V Phase V –> Phase W
Control W L
VC
H L H L H.