OCH2986 Driver Datasheet

OCH2986 Datasheet, PDF, Equivalent


Part Number

OCH2986

Description

Single Phase Hall-Effect DC Fan Driver

Manufacture

Orient Chip

Total Page 2 Pages
Datasheet
Download OCH2986 Datasheet


OCH2986
OCH2986
Single Phase Hall-Effect DC Fan Driver
General Description
The OCH2986 is an integrated Hall sensor
with H-Bridged output driver designed for
brushless DC motor applications. The device is
using HV BCD process includes an on-chip Hall
sensor for magnetic sensing, an amplifier that
amplifies the Hall voltage, a comparator to provide
switching hysteresis for noise rejection, a
bi-directional drivers for sinking and driving large
current load.
Placing the device in a variable magnetic
field, if the magnetic flux density is larger than
threshold BOP, the DO is turned to sink and DOB
is turned to drive. This output state is held until the
magnetic flux density reverses and falls below
BRP, then causes DO to be turned to drive and
DOB turned to sink.
OCH2986 is available in SIP-4L package and
is rated over the -40°C to 85°C.
Features
One-chip Solution (Hall Element + Driver)
Input Voltage Range : 3.5V to 20V
For Single Coil DC motor / Fan Systems
High Sensitivity Hall Sensor
Thermal Shutdown Protection
Low Output Switching Current Noise
-40to +85 Temperature Range
RoHS Compliant
Available in SIP-4L Packages
Applications
Single Coil Design Cooling Fans
Single Coil DC Brushless Fan
Single Coil DC Brushless Motor
Office Automated Equipment
Brown-Goods
Home Applications
Car Audio Cooling Fan
Pin Configuration
(Top View)
Figure 1, Pin Assignments of OCH2986
Pin Name
VDD
DO
DOB
GND
Pin No.
1
2
3
4
Pin Function
Positive Power Supply
Output 1
Output 2
Ground
Page1 - 2
Ver. 1.1 Feb .27, 2018
源于灿瑞 磁传天下

OCH2986
Typical Application Circuit
OCH2986
Single Phase Hall-Effect DC Fan Driver
OCH2986
VDD
1
DO DOB GND
234
OCH2986
VDD
1
DO DOB GND
234
VDD
VDD
D1
Coil C1
≥1uF
NOTE:D1 Is reversed protection diode
Figure 2, Typical Application Circuit of OCH2986 (SIP-4L)
Coil
Ordering Information
Part Number Package Type Packing Qty BOP (Gauss) BRP(Gauss) Temperature Eco Plan Lead
OCH2986MD
SIP-4L
1500pcs/Bag
5 ~ 50
-50 ~ -5 -40 ~ 85ROHS Cu
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Page2 - 2
Ver. 1.1 Feb .27, 2018
源于灿瑞 磁传天下


Features WWW.ORIENT-CHIP.COM OCH2986 Single Phas e Hall-Effect DC Fan Driver ◼ Genera l Description The OCH2986 is an integra ted Hall sensor with H-Bridged output d river designed for brushless DC motor a pplications. The device is using HV BCD process includes an on-chip Hall senso r for magnetic sensing, an amplifier th at amplifies the Hall voltage, a compar ator to provide switching hysteresis fo r noise rejection, a bi-directional dri vers for sinking and driving large curr ent load. Placing the device in a varia ble magnetic field, if the magnetic flu x density is larger than threshold BOP, the DO is turned to sink and DOB is tu rned to drive. This output state is hel d until the magnetic flux density rever ses and falls below BRP, then causes DO to be turned to drive and DOB turned t o sink. OCH2986 is available in SIP-4L package and is rated over the -40°C to 85°C. ◼ Features ⚫ One-chip Solu tion (Hall Element + Driver) ⚫ Input Voltage Range : 3.5V to 20V ⚫ For Single Coil DC motor / Fan .
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