LB1962MC [ONSEMI]
IC BRUSHLESS DC MOTOR CONTROLLER, Motion Control Electronics;
| 型号： | LB1962MC |
| 厂家： | 
ONSEMI |
| 描述： | IC BRUSHLESS DC MOTOR CONTROLLER, Motion Control Electronics 电动机控制 光电二极管 |
| 文件： | 总7页 (文件大小：120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA2025A
LB1962MC
Monolithic Digital IC
For Fan Motor
http://onsemi.com
Single-Phase Full-Wave Driver
Overview
Single-phase full-wave drive design and a compact package make these ICs optimal for small fans (especially CPU
cooling fans). Low switching noise and effective motor drive are further advantages.
Functions
• Support for 5V/12V dual power supply voltage
• Built-in regenerative circuit allows use of reverse connection protection diode
• Built-in Hall amplifier with hysteresis (supports core without auxiliary electrode)
• Built-in lockup protection and automatic recovery circuits
• Rotation detection output (FG)
• Hall bias pin and start/stop pin allow reduced current drain in standby mode
• Built-in thermal protection circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Maximum supply voltage
V
I
max
17
CC
Maximum output current
max
max
0.5
A
OUT
Maximum output withstand voltage
FG maximum output withstand voltage
FG maximum output current
HB maximum output current
ST maximum input voltage
Allowable power dissipation
Operating temperature
V
V
I
17
V
OUT
max
17
V
FG
max
5
10
mA
mA
V
FG
I
max
B
V
max
15
ST
Pd max
Topr
Mounted on a specified board *
800
mW
°C
°C
-30 to +90
-55 to +150
Storage temperature
Tstg
* Specified board: 114.3mm × 76.2mm × 1.6mm, glass epoxy board.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
70412 SY 20120607-S00001/42512 SY 20120305-S00002 No.A2025-1/7
LB1962MC
Allowable Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Power supply voltage
V
3.8 to 16.8
3 to 14
CC
ST input High level voltage
ST input Low level voltage
Hall input common mode voltage
ST
ST
V
V
H
-0.3 to +0.4
V
L
0.2 to V -1.5
CC
V
ICM
Electrical Characteristics at Ta = 25°C, V
= 5V
CC
Ratings
typ
Parameter
Current drain
Symbol
Conditions
Unit
min
max
I
In drive mode (CT = “L”, ST = “L”)
In lockup protection mode (CT = “H”, ST = “L”)
In standby mode (ST = “H”)
6.5
2.2
9.1
3.1
mA
mA
μA
CC
110
2.8
150
3.7
Lockup detection
I
I
1
1.9
μA
CT
capacitor charge current
Capacitor discharge current
2
0.32
5.0
0.46
6.0
0.60
7.0
μA
CT
Capacitor charge/discharge
current ratio
R
R
= I 1/I
2
CT
CT CT CT
CT charge voltage
V
1
2.55
1.6
2.75
1.8
0.2
4.1
7
2.95
2.0
V
V
CT
CT
OL
CT discharge voltage
V
V
V
V
V
2
Output Low level voltage
Output High level voltage
Hall input sensitivity
I
= 200mA
= 200mA
O
0.3
V
O
I
3.9
V
OH
HN
FG
Zero peak value (Including offset and hysteresis)
= 5mA
15
0.3
30
mV
V
FG output pin Low voltage
FG output pin leakage current
HB output Low voltage
ST pin input current
I
0.1
FG
I
L
V
= 15V
FG
μA
V
FG
V
I
= 5mA
= 5V
ST
1.0
75
1.3
100
HBL
HB
I
V
μA
ST
Package Dimensions
unit : mm (typ)
3426A
4.9
Pd max -- Ta
Specified board: 114.3 76.2 1.6mm3
1
0.8
0.6
0.4
0.2
0
10
6
×
×
glass epoxy board.
1
5
0.41
1.0
0.21
0.38
-30 -20
0
20
40
60
80 90 100
Ambient temperature, Ta --
C
SOIC10
No.A2025-2/7
LB1962MC
Pin Assignment
FG
1
2
10
9
+
IN
HB
ST
CT 3 LB1962MC
8
OUT1
GND
4
5
7
V
CC
6
OUT2
Top view
Block Diagram
CT
Charge / Discharge
circuit
FG
Discharge
pulse
V
CC
+
IN
HALL
Delay circuit
OUT2
M
Hysteresis amplifier
Control
circuit
HB
Delay circuit
OUT1
Thermal protection
circuit
START/STOP
ST
GND
Truth Table
ST
IN-
IN+
CT
-
OUT1
OUT2
FG
HB
Mode
H
-
H
L
-
-
L
H
-
OFF
H
OFF
L
OFF
OFF
Standby
Rotating
L
H
-
L
L
L
L
H
H
OFF
OFF
L
Lockup protection activated
Latch-type RD output is Low during rotation and High during stop.
No.A2025-3/7
LB1962MC
Startup
Power-ON
V
CC
OUT
CT
RD
FG
Lockup protection/automatic recovery
Output ON
Locked
Released
OUT
Output OFF
Output OFF
RD
FG
CT
Start/stop
ST
OUT
RD
Output OFF
FG
No.A2025-4/7
LB1962MC
Design Reference
(1) V
pin
CC
Power supply pin for control block and motor drive.
Accepts a wide operation voltage range from 3.8 to 16.8V, for 5V/12V dual power supply support.
(2) OUT1, OUT2 pins
Single-phase coil output pins.
Bipolar drive output with upper side inverted and lower side single output. Built-in regenerative circuit regenerates
kickback current between lower side NPN outputs when a diode is used for protection against reverse connection.
−
+
(3) IN , IN pins
Hall input signal pins
The Hall signal is amplified into a square wave by the Hall amplifier with hysteresis characteristics of ±3.5mV (typ.).
The Hall input signal amplitude should be 70mV or more.
(4) CT pin
This pin serves for connecting a capacitor between CT and GND.
The capacitor determines the characteristics of the built-in lockup protection circuit for preventing coil burnout in the
case of motor restraint. Once normal motor load is restored, the automatic recovery circuit resets itself.
Changing the capacitance alters the lockup detection time.
When a 0.47 mF capacitor is connected between CT and GND
Lockup detection time
: approx. 0.5s
Lockup protection time/automatic recovery time
: approx. 0.16s (output ON)
approx. 1s (output OFF)
When not using lockup protection function, this pin should be connected to ground.
(5) FG pin
Open-collector output pin for rotation frequency detection.
−
+
+
When IN = High and IN = Low, then FG = Low
−
When IN = Low and IN = High, then FG = High
(6) ST pin and HB pin
ST pin : When input to this pin is High, motor drive is stopped (OUT is high impedance).
At this time, RD output indicates lockup protection mode OFF.
HB pin : Hall bias switching pin. At ST pin High input, Hall bias is switched to reduce current drain in fan standby
mode.
If not used, both pins should be open.
(7) Thermal protection circuit
When internal temperature Tj of IC reaches 180°C, output current limiter is activated to protect against damage.
No.A2025-5/7
LB1962MC
Application Circuit Example
7
C2
V
CC
H
1
FG 10
+
IN
2
9
8
3
OUT1
4
6
HB
ST
CT
LB1962MC
OUT2
GND
5
I
-- V
CC
I
IN
-- V
CC
IN
500
400
300
200
100
12
10
8
V
CC
=5V
6
4
2
ST=H
0
0
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
10
12
14
16
18
20
22
Power supply voltage, V
CC
-- V
Input voltage, V -- V
IN
V
-- I
V
-- I
O(sat)L
O
O(sat)H
O
0.5
0.4
0.3
0.2
0.1
0
1.0
0.8
0.6
0.4
0.2
V
=3.8V
Ta =25°C
V
=3.8V
CC
CC
Ta =25°C
0
0
100
200
300
400
500
0
100
200
300
400
Output current, I -- A
Output current, I -- A
O
O
No.A2025-6/7
LB1962MC
V
,V -- I ,I
RD HB RD HB
1.0
0.8
0.6
0.4
0.2
0
V
=3.8V
CC
Ta =25°C
0
2
4
6
8
10
12
14
I
, I
RD HB
-- mA
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PS No.A2025-7/7
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