Document
Ordering number : ENN6200A
LB1877V
Monolithic Digital IC
LB1877V
Brushless Motor Driver with Speed Control for Portable Cassette Recorders
Overview
The LB1877V is a motor driver well suited for driving motors of minicassette recorders, headphone stereos, and microcasette recorders that use a 3V power supply.
Package Dimensions
unit: mm 3179A-SSOP20
20 11
1.0 4.4 1.6max
[LB1877V]
• • • • •
Brushless sensorless motor drive (3-phase half-wave drive) Forward/reverse drive possible Built-in speed control function (voltage servo) Built-in reference voltage (0.9V) Soft switching
1 6.7
10
0.15
0.22
0.65
0.43
SANYO : SSOP20
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max IO max Pd max Topr Tstg Conditions Ratings 6.0 0.5 0.35 –10 to +80 –40 to +150 Unit V A W °C °C
Allowable Operating Ranges at Ta = 25°C
Parameter Power supply voltage Symbol VCC Conditions Ratings 1.8 to 5.0 Unit 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
80699RM(KI) No. 6200-1/7
0.1
0.5
Functions and Features
6.4
LB1877V
Electrical Characteristics at Ta = 25°C, VCC = 2.4V
Parameter Power supply current [S/S pin] S/S pin High level S/S pin Low level [DR pin] DR pin High level DR pin Low level [Internal reference voltage] Internal reference voltage Output current Reference voltage to power supply voltage characteristics Reference voltage to temperature characteristics [OSC pin] Charge current [COM pin] Sink current [LB pin] Charge current [VSP pin] Input voltage range Speed signal detection precision Speed signal relative precision Speed signal to power supply voltage characteristics Speed signal to temperature characteristics [IN+ pin] Input voltage range [OUT pin] Output current [RI pin] Current detection precision [U, V, WOUT pins] Output saturation voltage [Thermal] Thermal protection trigger temperature Temperature hysteresis width Symbol ICC1 ICC2 SSH SSL DRH DRL Conditions S/S pin High level S/S pin Low level (standby) Start Stop Reverse Normal direction 1.5 0 1.5 0 0.8 0.9 min Ratings typ 4.0 max 20 VCC 0.3 VCC 0.3 Unit mA µA V V V V Measurement circuit 1 2 3 4 9 10 11 12 13 Target
VREF Output current 0 µA IREF Output current 250 µA ∆VREF/∆VCC VCC 1.8 to 5.0V ∆IREF/∆Ta VCC 2.4V
1.0 V 25 mV/250 µA 5 mV/V +0.3 mV/°C
– 0.1
Isc ICOM ILB VIN VCC = 2.4V VSP VIN = 1V RSP ∆VSP/∆VCC VCC 1.8 to 5.0V ∆VSP/∆Ta
3.0 17 4.5 0.15 420 –6
4.5 24 6.5
6.0 33 9.0 1.8 580 +6 2.5 +0.2
µA µA µA V mV % mV/V mV/°C
14 15 16 17 18 Target 19 Target
500
– 0.1
VIN+ IOUT VRI Vsat TTSD ∆TTSD
VCC = 2.4V VIN+ = 1V RI = 10 kΩ U, V, Wout = 2.3V IO = 200 mA
0.1 25 10 30 20
VCC – 0.7 47.3 35 0.25 180 15
V µA mV V °C °C
20 21 22 23 Target Target
Note: Items shown to be “Target” are not measured.
Pd max – Ta
0.8
Allowable power dissipation, Pd max – W
0.6
0.4 0.35
0.2
0 –10
0
20
40
60
80
100
Ambient temperature, Ta – °C
No. 6200-2/7
LB1877V
Pin Description
Pin number Pin name 20 UOUT 1 VOUT 2 WOUT 6 UB 5 VB 4 WB 18 VCC 7 OSC 8 COM 3 P – GND 9 GND 11 S/S 19 DR 12 VREF 14 VSP 13 IN+ 15 OUT 10 RI 16 FC 17 LB Function U-phase output V-phase output W-phase output U-phase base of 3-phase differential V-phase base of 3-phase differential W-phase base of 3-phase differential Power supply Startup oscillator pin Output waveform detection comparator voltage Output transistor and predriver ground Ground pin Start/stop pin Forward/reverse pin Reference voltage 0.9V Output waveform peak detection pin Error amp non-inverted pin Error amp output pin Current feedback resistor connection pin Frequency response adjustment pin Motor start lockup prevention. Connect to GND via capacitor
Pin Assignment
VOUT 1 WOUT 2 PGND 3 WB 4 VB 5
20
UOUT
19 DR 18 VCC 17 LB 16 FC
LB1877V
UB 6 OSC 7 COM 8 GND 9 RI 10
15 OUT 14 VSP 13 IN+ 12 VREF 11 S/S
Top view
No. 6200-3/7
0.1µF 0.1µF 0.1µF VCC UB VB WB
Block Diagram
Lockup prevention
LB
Startup detection
UOUT VOUT
Predriver
0.047µF
Transfer current start logic
Waveform detection
WOUT
DR
Forward/ revers.