CST2466 英文版規(guī)格書下載 CST2466中文版下載
CST2466/CT2466E概述：
CST2466/CT2466E DESCRIPTION:
CST2466/CST2466E是2.1A Ｈ橋驅(qū)動芯片。較寬的輸入電壓2至11Ｖ。超低內(nèi)阻280mΩ，CST2466/CST2466E提供SOP8和ESOP8兩種封裝。
CST2466/CST2466E 為電池供電的玩具、低壓或者電池供電的運(yùn)動控制應(yīng)用提供了一種集成的有刷直流馬達(dá)驅(qū)動解決方案。CST2466/CST2466E 電路內(nèi)部集成了采用 N 溝和 P 溝功率 MOSFET 設(shè)計的 H 橋驅(qū)動電路，適合于驅(qū)動有刷直流馬達(dá)或者驅(qū)動步進(jìn)馬達(dá)的一個繞組。CST2466/CST2466E 電路具備較寬的工作電壓范圍（從 2V 到 11V）， 最大持續(xù)輸出電流達(dá)到 2.1A（ESOP），最大峰值輸出電流達(dá)到 3.5A。該驅(qū)動電路內(nèi)置過熱保護(hù)電路。通過驅(qū)動電路的負(fù)載電流遠(yuǎn)大于電路的最大持續(xù)電流時，受封裝散熱能力限制，電路內(nèi)部芯片的結(jié)溫將會迅速升高，一旦超過設(shè)定值 (典型值 150℃)， 內(nèi)部電路將立即關(guān)斷輸出功率管，切斷負(fù)載電流，避免溫度持續(xù)升高造成塑料封裝冒煙、起火等安全隱患。內(nèi)置的溫度遲滯電路，確保電路恢復(fù)到安全溫度后，才允許重新對電路進(jìn)行控制。 CST2466/CST2466E 提供SOP8和ESOP-8封裝形式。
The CST2466/CST2466E provides an integrated motor driver for cameras, consumer products, toys and other application with low-voltage or battery-powered motion control.The CST2466/CST2466E can supply up to 2.1A of output DC current. It operates on a motor power supply (VM) from 2 to 11V and a device power supply voltage (VCC) of 2V to 6V. Ultra- low RDS-ON allows SOP-8 package available. The CST2466/CST2466E has a PWM (INA、INB) input interface. Full protections are integrated with over-current protection, under-voltage lockout and over-temperature shutdown.
CST2466/CST2466E特性：
CST2466/CT2466E FEATURE:
單通道內(nèi)置功率 MOS 全橋驅(qū)動
最大連續(xù)輸出電流可達(dá) 2.1A,峰值 3.5A
驅(qū)動前進(jìn)、后退、停止及剎車功能
無需外圍濾波電容
內(nèi)置遲滯熱效應(yīng)過熱保護(hù)功能
低導(dǎo)通電阻 260mΩ
H-Bridge Motor Driver
DC Motor or Other Loads
Low On-Resistance :280mΩ
2.1-A Maximum DC Drive Current
Separate Motor and Logic Supply
Motor VM : 2 to 11V
Logic VCC : 2V to 6V
Low-Stand-by Current ≤ 2uA/VM=VCC=5V
Small Package and Footprint
8-Pin ESOP with Thermal PAD
8-Pin SOPProtection Features
VCC Under-voltage Lockout
Over-Current Protection
Thermal Shutdown
CST2466/CST2466E應(yīng)用
CST2466/CST2466E APPLICATION:
電動牙刷
玩具馬達(dá)驅(qū)動
相機(jī)、單反相機(jī)鏡頭驅(qū)動
電子鎖
機(jī)器人
有刷驅(qū)動器應(yīng)用
Electric toothbrush, Electric lock
Cameras
DSLR Lenses
Consumer Products
Toys
Robotics
CST2466/CST2466E PCB布局指導(dǎo)及典型應(yīng)用電路圖:
CST2466/CST2466E PCB LAYOUT GUIDANCE
注：如圖在 3V 應(yīng)用中建議 CVM 電容至少用一個 0.1uF；在 4.5V 應(yīng)用中至少用一個 1uF；在 6V 應(yīng)用中至少用一個 4.7uF；在 9V 應(yīng)用中至少用一個 22uF。均為使用貼片電容靠近 IC 之 VDD 管腳放置且電容的負(fù)極和 IC 的 GND端之間的連線也需盡量短。即不要電容雖然近，但布線、走線卻繞得很遠(yuǎn)。當(dāng)使用大電解插件電容時，建議再并一個 0.1uF 貼片電容于
CST2466/CST2466E 之 VM 腳上。 參考下圖。
The capacitor C1 connected between the GND and the VM pins must be located as close as possible to the
CST2466/CST2466E chip. In different applications, C1(show as above) is recommended to use a 0.1uF in 3V applications; a 1uF is recommended for 4.5V applications; a 4.7uF is recommended for 6V applications; in 9.6V applications, it is recommended to use 22uF, all these capacitors should be SMD package. The connection between the negative pole of the capacitor and the GND terminal of the IC should be as short as possible. That is to say, the line route should not far away.
When the application board has capacitors while filtering for other chips that is far away from the
CST2466/CST2466E, it need to place a small capacitor for
CST2466/CST2466E.
The capacitor C3 preferably soldering to the motor poles instead of placing it on the PCB. When it is inconvenient to soldering on the motor poles, it can be mount on the PCB. The following diagram is the PCB layout reference .
CST2466 SOP8腳位圖:
CST2466 SOP8 PIN DESCRIPTION:
| Pin number |
Pin name |
I/O |
Description |
| 1 |
VM |
-- |
Motor power supply |
| 2 |
OUTA |
O |
Motor drive output A |
| 3 |
OUTB |
O |
Motor drive output B |
| 4 |
GND |
-- |
Ground |
| 5 |
INB |
I |
Logic input B |
| 6 |
INA |
I |
Logic input A |
| 7 |
NC |
-- |
No connection |
| 8 |
VCC |
-- |
Logic power supply |
CST2466 ABSOLUTE MAXIMUM RATINGS
| Parameters |
Symbol |
Value |
Unit |
| Logic power supply voltage , VCC |
VCC |
7 |
V |
| Motor power supply voltage , VM |
VM |
11 |
V |
| Power dissipation |
Pd |
SOP-8 |
0.96 |
W |
| Operating Temperature, Top |
Topr |
-20~85 |
℃ |
| Junction temperature |
Tj |
150 |
℃ |
| Storage Temperature, Tstg |
Tstg |
-55~150 |
℃ |
| Manual welding temperature |
|
350~370 |
℃ |
| Peak output current |
Iop |
3.5 |
A |
| Continuous Output Current |
Ioc |
2.1 |
A |
| PWM Frequency |
fPWM |
33 |
KHz |
CST2466 RECOMMENDED OPERATING CONDITIONS(Ta=25℃)
| Parameter |
Symbol |
Rating |
Unit |
| Power supply voltage |
VCC |
2.0~6 |
V |
| Motor Power supply voltage |
VM |
9.6 |
V |
| High Input Voltage |
VIN |
0.5xVCC |
V |
| Low Input Voltage |
VIN |
-0.8~0 |
V |
| Continuous Output Current |
IOUT |
-1500~1500 |
mA |
Note:The maximum continuous output current depends on the heat dissipation conditions. 2.1A(ESOP8) 1.68A(SOP8)
CST2466 ELECTRICAL CHARACTERISTICS
(Ta=25℃,VCC=3V,VM=6V,unless otherwise specified )
| Parameter |
Symbol |
Test Condition |
Min |
Typ |
Max |
Unit |
| Overall Circuit |
| Standby Current |
ICCST |
INA=INB=GND |
— |
1 |
5 |
uA |
| Input control |
| High Input Voltage |
VINH |
|
2 |
4 |
6 |
V |
| Low Input Voltage |
VINL |
|
— |
— |
0.8 |
V |
| PWM Drive Frequency |
FPWM |
|
— |
20 |
33 |
KHz |
| Reverse brake Time Required |
RVBT |
from INA to INB or
from INB to INA |
200 |
500 |
— |
uS |
| High Input Current |
IINH |
VIN=3V |
— |
250 |
400 |
uA |
| Low Input Current |
IINL |
VIN=0V |
-1 |
0 |
— |
uA |
| Pull Down Resistor |
RIN |
|
— |
12 |
— |
KΩ |
| Driving |
| Output Impedance(HS+LS) |
RON |
Io=±200mA |
— |
0.26 |
0.6 |
Ω |
| Protection Circuits |
| Thermal shutdown temperature |
TTSD |
Die temperature |
— |
150 |
— |
℃ |
CST2466 INPUT AND OUTPUT TRUTH TABLE
| Input |
Output |
Function |
| INA |
INB |
OUTA |
OUTB |
| L |
L |
Hi-Z |
Hi-Z |
Stand-by(Stop) |
| H |
L |
H |
L |
A CH output |
| L |
H |
L |
H |
B CH output |
| H |
H |
L |
L |
Brake |
