SANYO LB1877V Datasheet
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
[LB1877V]
20
11
4.4
1.0
6.4
Functions and Features
0.5
• 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
110
6.7
0.650.22 0.43
0.15
1.6max
0.1
SANYO : SSOP20
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Maximum output current IO max 0.5 A
Allowable power dissipation Pd max 0.35 W
Operating temperature Topr –10 to +80 °C
Storage temperature Tstg –40 to +150 °C
max 6.0 V
CC
Allowable Operating Ranges at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Power supply voltage 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.
CC
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
1.8 to 5.0 V
80699RM(KI)
No. 6200-1/7
LB1877V
Electrical Characteristics at Ta = 25°C, VCC = 2.4V
Parameter Symbol Conditions
Ratings
min typ max circuit
Unit
Power supply current ICC1 S/S pin High level 4.0 mA 1
ICC2 S/S pin Low level (standby) 20 µA2
[S/S pin]
S/S pin High level SSH Start 1.5 V
CC
S/S pin Low level SSL Stop 0 0.3 V 4
[DR pin]
DR pin High level DRH Reverse 1.5 V
CC
DR pin Low level DRL Normal direction 0 0.3 V 10
[Internal reference voltage]
Internal reference voltage V
Output current I
Reference voltage to power supply
∆V
REF
REF
Output current 0 µA 0.8 0.9 1.0 V 11
REF
Output current 250 µA 25 mV/250 µA12
/∆VCCVCC 1.8 to 5.0V 5 mV/V 13
voltage characteristics
Reference voltage to temperature ∆I
/∆Ta VCC 2.4V – 0.1 +0.3 mV/°C Target
REF
characteristics
[OSC pin]
Charge current Isc 3.0 4.5 6.0 µA14
[COM pin]
Sink current I
COM
17 24 33 µA15
[LB pin]
Charge current I
LB
4.5 6.5 9.0 µA16
[VSP pin]
Input voltage range V
Speed signal detection precision V
Speed signal relative precision R
Speed signal to power supply
∆VSP/∆VCCVCC 1.8 to 5.0V 2.5 mV/V 19
VCC = 2.4V 0.15 1.8 V 17
IN
VIN = 1V 420 500 580 mV 18
SP
SP
– 6 +6 % Target
voltage characteristics
Speed signal to temperature ∆VSP/∆Ta – 0.1 +0.2 mV/°C Target
characteristics
[IN+ pin]
Input voltage range VIN+VCC = 2.4V 0.1
VCC – 0.7
[OUT pin]
Output current I
OUT
VIN+ = 1V 25 30 47.3 µA21
[RI pin]
Current detection precision V
RI = 10 kΩ U, V, Wout = 2.3V 10 20 35 mV 22
RI
[U, V, WOUT pins]
Output saturation voltage Vsat IO = 200 mA 0.25 V 23
[Thermal]
Thermal protection trigger temperature
TTSD 180 °C Target
Temperature hysteresis width ∆TTSD 15 °C Target
Note: Items shown to be “Target” are not measured.
Measurement
V3
V9
V20
0.8
0.6
0.4
0.35
0.2
Pd max – Ta
Allowable power dissipation, Pd max – W
0
–10 0 20 40 60 80 100
Ambient temperature, Ta – °C
No. 6200-2/7
LB1877V
Pin Description
Pin number Pin name Function
20 UOUT U-phase output
1 VOUT V-phase output
2 WOUT W-phase output
6 UB U-phase base of 3-phase differential
5 VB V-phase base of 3-phase differential
4 WB W-phase base of 3-phase differential
18 VCC Power supply
7 OSC Startup oscillator pin
8 COM Output waveform detection comparator voltage
3 P – GND Output transistor and predriver ground
9 GND Ground pin
11 S/S Start/stop pin
19 DR Forward/reverse pin
12 VREF Reference voltage 0.9V
14 VSP Output waveform peak detection pin
13 IN+ Error amp non-inverted pin
15 OUT Error amp output pin
10 RI Current feedback resistor connection pin
16 FC Frequency response adjustment pin
17 LB Motor start lockup prevention. Connect to GND via capacitor
Pin Assignment
1
VOUT
WOUT
PGND
WB
VB
2
3
4
5
LB1877V
UB OUT
6
OSC
7
COM
8
GND
9
20
19
18
17
16
15
14
13
12
UOUT
DR
VCC
LB
FC
VSP
IN+
VREF
RI
10
Top view
11
S/S
No. 6200-3/7
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