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PDF LB1962M Data sheet ( Hoja de datos )
| Número de pieza | LB1962M | |
| Descripción | Fan Motor Single-Phase Full-Wave Drivers | |
| Fabricantes | Sanyo | |
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Ordering number : ENN5657A
LB1862M, LB1962M
Monolithic Digital IC
LB1862M, 1962M
Fan Motor Single-Phase Full-Wave Drivers
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. The LB1862M features a
lockup detection output (RD) and the LB1962M features a
rotation detection output (FG).
Package Dimensions
unit: mm
3086A-MFP10S
[LB1862M/LB1962M]
10 6
Features
• 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
• Latch-type lockup detection output (RD) is Low during
rotation and High during stop (LB1862M)
• Rotation detection output (FG) (LB1962M)
• Hall bias pin and start/stop pin allow reduced current drain
in standby mode
• Built-in thermal protection circuit
1
5.1
5
0.15
0.35 1.0 0.55
SANYO : MFP10S
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter
Symbol
Conditions
Maximum supply voltage
Maximum output current
Maximum output withstand voltage
VCC max
IOUT max
VOUT max
(LB1862M)
(LB1962M)
RD/FG maximum output
withstand voltage
RD/FG maximum output current
HB maximum output current
ST maximum input voltage
Allowable power dissipation
VR max
VF max
IR max
IF max
IB max
VST max
Pd max
(LB1862M)
(LB1962M)
With specified substrate*
Operating temperature
Topr
(LB1862M)
(LB1962M)
Storage temperature
Tstg
*Specified substrate: 114.3 × 76.2 × 1.5 mm3 glass epoxy
Ratings
17
0.5
15
15
15
17
5
5
10
15
850
–20 to +75
–30 to +85
–55 to +150
Unit
V
A
V
V
V
V
mA
mA
mA
V
mW
°C
°C
°C
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O2599RM(KI) No. 5657-1/7
1 page  
LB1862M, LB1962M
Design reference
(1) VCC pin
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 ±3.5 mV
(typ.). The Hall input signal amplitude should be 70 mV 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 µF 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) RD pin (LB1862M)
Open-collector output pin that is Low during rotation and OFF when lockup is detected.
The output is a latch type which stays OFF also when the automatic recovery circuit has restored drive mode unless
the rotation actually resumes.
(6) FG pin (LB1962M)
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
(7) 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.
(8) Thermal protection circuit
When internal temperature Tj of IC reaches 180°C, output current limiter is activated to protect against damage.
No. 5657-5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LB1962M.PDF ] | |
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