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PDF SDC281 Data sheet ( Hoja de datos )
| Número de pieza | SDC281 | |
| Descripción | Smart Two-Phase DC Fan | |
| Fabricantes | SDC | |
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Smart Two-Phase DC Fan Driver
Datasheet
SDC281
General Description
The SDC281 is a two-phase brushless DC fan motor driver,
which is built in Hall effect sensor. The driver includes lock
detection and auto-restart functions. The built-in chopper
amplifier can dynamically adjust the input offset voltage.
It greatly improves the sensitivity of the magnetic. The
output uses the soft-switch that greatly reduces the
phase-switch noise. The power switch is application in
advanced LDMOS technology to effectively reduce the
on-resistance. The peak current is highly to 1200mA.
Features
Widely operating voltage range: 2.5V~20V
High output peak current to 1200mA
Continuous output current to 600mA
High sensitivity Hall effect sensor IC: ±25GS
Soft-switch to reduce phase-switch noise
Built-in output protection clamping circuit
Built-in lock detection and auto-restart functions
Built-in thermal shutdown protection
Reverse voltage protection
Applications
Brushless DC fan motors
Brushless DC motors
TO-94
Figure 1. Package Type
December, 2013 Rev. 1.1
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/10
www.sdc-semi.com
1 page  
Smart Two-Phase DC Fan Driver
Datasheet
SDC281
Electrical Characteristics (Ta=25°C, VDD=12V, unless otherwise specified)
Parameter
Symbol
Conditions
Supply current
Output saturation voltage
Output clamp voltage
Leakage current of DO
Leakage current of DOB
Lock detection on time
Lock detection off time
Over temperature shutdown
Temperature hysteresis
I DD1
I DD2
V SAT
V OUT-CLAMP
I DOL
I DOBL
t ON
t OFF
T OTS
-
VDD=2.5V,output open
VDD=20V,output open
VDD=12V, IOUT=300mA
VDD=12V,output off
VDO=12V, B<BRP
VDOB=12V, B>BOP
-
-
-
-
Table 4. Electrical Characteristics
Magnetic Characteristics (Ta=25°C, VDD=12V, unless otherwise specified)
Parameter
Symbol Min Typ
Operating point
BOP 10 25
Release point
BRP -40 -25
Hysteresis
BHys 40 50
Table 5. Magnetic Characteristics
Min Typ
-1
-2
- 200
20 23
- 120
- 120
- 0.45
- 3.2
- 165
- 30
Max
40
-10
60
Max Unit
2 mA
4 mA
300 mV
26 V
200 uA
200 uA
-S
-S
- °C
- °C
Unit
GS
GS
GS
VDO VDOB
Off-state
Off-state
BH BH
On-state
N BRP 0 BOP S N
On-state
BRP 0 BOP
Figure 4. Magnetic Characteristics
S
December, 2013 Rev. 1.1
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/10
www.sdc-semi.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SDC281.PDF ] | |
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