![](/images/new-backgrounds/1179633/17963335x1.webp)
LA6565
Overview
The LA6565 is a
Functions and Features
■Five power amplifier circuits (bridge connection (BTL connection): 4 channels, H bridge: 1 channel)
■Iomax: 1 A
■
■
■
■Output voltage setting function (for the loading motor channel)
■Thermal shutdown circuit
■Package: HSOP36R (375 mil)
LV8280T0T
Overview
The LV8280T is a sensorless motor driver IC that provides a reverse torque braking function and is appropriate as the spindle motor driver in
Since this IC can implement motor drive without the use of a Hall effect device, it can be effective in supporting motor system miniaturization, thinner form factors, and reduced power consumption.
Functions and Features
■
■Direct PWM drive (low side control)
■MOSFET output
■Synchronous commutation
■Supports switching between reverse torque braking and
■Voltage controlled amplifier
■Analog input, PWM output
■FG output (Two outputs: single Hall device equivalent FG and three Hall device equivalent FG outputs)
■Current limiter circuit
■Thermal protection circuit
■Standby mode power saving circuit
■Package: TSSOP30 (275 mil)
Block Diagram
FWD
REV
VCCP2
VLO-
VLO+
VO4+
VO4-
VO3+
VO3-
VO2+
VO2-
VO1-
VO1+
VCCP1
VCCS
VIN1+
VIN1-
VIN1
1 |
|
| Thermal shutdown | Signal system | 36 | SGND | ||||
Input |
|
| circuit | ground |
| |||||
|
|
|
|
|
| |||||
2 |
| (Loading motor driver output voltage setting) | 35 |
| ||||||
|
| VCONT | ||||||||
|
|
|
| Muting |
|
|
|
|
| |
3 |
|
|
| Controls the on/off state of | 34 | MUTE1 | ||||
|
| control | the corresponding channel. | |||||||
4 |
|
| High: output on, |
| CH1 | 33 |
| |||
|
| low: output off |
| CH2,3,4 | MUTE234 | |||||
|
| Output |
| |||||||
5 |
|
| 44k | 11k |
|
| 32 |
| ||
|
| + | - | VIN4- | ||||||
|
|
|
|
| + | |||||
6 |
|
| shifter | - |
| To VREFOUT 31 |
| |||
|
|
|
| VIN4 | ||||||
7 |
|
| Level |
|
|
| - | 30 | ||
|
|
|
|
| + | |||||
8 |
|
| shifter |
|
|
|
| 29 | ||
9 |
|
|
|
|
|
| 28 |
| ||
Power |
| Level | REG (VDD) | system ground | ||||||
|
|
|
| |||||||
| system |
| - IN |
|
|
| ||||
RF ground |
| + REG |
| RF |
| |||||
| - |
| Power |
| ||||||
|
|
| + | OUT |
|
|
| |||
|
|
|
|
|
|
|
|
| ||
10 |
|
| Level shifter |
|
|
| + | 27 | ||
|
|
|
|
| - | |||||
11 |
|
|
|
|
| + | 26 | VIN+OP | ||
|
|
|
|
|
|
|
|
| ||
12 |
|
| shifter |
|
|
| - | 25 | ||
|
|
|
|
|
| |||||
13 |
|
|
|
|
|
| 24 |
| ||
|
| Level |
|
|
|
| ||||
|
|
|
|
|
|
|
|
| ||
14 |
|
|
| 44k |
|
|
| 23 | VIN3 | |
15 | Signal system | 11k |
|
| 22 |
| ||||
- | - | VIN3- | ||||||||
power supply |
| |||||||||
|
| + | ||||||||
|
|
|
| + |
| To VREFOUT |
|
| ||
16 |
| 11k | 44k |
|
| 21 | VIN2 | |||
+ | - |
|
|
|
| |||||
|
|
|
|
|
|
| ||||
17 | - |
| + | 44k | 11k |
|
| 20 | VIN2- | |
|
|
| - |
| - | |||||
|
|
|
|
|
| + |
|
| ||
18 |
|
|
| + |
|
|
| 19 | VIN2+ | |
|
|
|
|
|
|
|
Block Diagram |
|
|
|
|
|
|
|
|
|
VCOIN | RMIN | RMAX | VCO |
| COMIN | FIL | CPC1 | CP1 |
|
VCC | VCO |
|
| OSC |
|
| Charge | VG | |
|
|
|
| pump |
| ||||
+ |
|
|
|
|
|
|
|
|
|
Phase |
|
|
|
|
|
|
| Waveform | COM |
comparator |
|
|
|
|
|
| synthesis | VS | |
|
|
|
|
|
|
|
|
| |
FG |
|
|
|
|
|
|
|
| + |
|
|
|
|
|
|
|
|
| |
BRK |
| Sensorless |
|
|
|
|
| UOUT | |
|
|
|
|
|
|
| |||
S/S |
|
| drive logic |
|
| Commutation |
|
| |
|
|
|
|
|
|
| |||
VREF |
|
|
|
|
| logic |
|
| VOUT |
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| WOUT |
|
|
| TSD |
|
|
|
|
| RF |
|
|
|
|
|
|
|
| - | - |
|
|
|
|
|
|
|
| + | |
|
|
|
|
|
|
|
| + | |
|
|
|
| + |
|
|
| - | |
|
|
|
|
|
|
|
| ||
|
|
|
| - |
|
|
|
| + |
|
|
| VCTL | VCREF |
|
|
|
|
|
| 31 Car Audio | 32 Car Audio |
|
|
|