Page 1
Ordering number : ENN5657A
LB1862M, LB1962M
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).
Features
• Support for 5V/12V dual power supply voltage
• Built-in regenerative circuit allows use of reverseconnection 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
LB1862M, 1962M
Package Dimensions
unit: mm
3086A-MFP10S
[LB1862M/LB1962M]
10
1
5.1
6
5
0.55
1.00.35
Monolithic Digital IC
0.625
4.4
1.8max
1.5
0.1
5.15
0.15
SANYO : MFP10S
6.4
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage VCC max 17 V
Maximum output current I
Maximum output withstand voltage V
RD/FG maximum output VR max (LB1862M) 15 V
withstand voltage VF max (LB1962M) 17 V
RD/FG maximum output current IR max 5mA
HB maximum output current IB max 10 mA
ST maximum input voltage VST max 15 V
Allowable power dissipation Pd max With specified substrate* 850 mW
Operating temperature Topr (LB1862M) –20 to +75 °C
Storage temperature Tstg –55 to +150 °C
*Specified substrate: 114.3 × 76.2 × 1.5 mm3 glass epoxy
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.
max 0.5 A
OUT
max (LB1862M) 15 V
OUT
IF max 5mA
(LB1962M) 15 V
(LB1962M) –30 to +85 °C
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
Page 2
LB1862M, LB1962M
Allowable Operating Ranges at Ta = 25˚C
Parameter Symbol Conditions Ratings Unit
Power supply voltage V
ST input High level voltage ST
ST input Low level voltage ST
Hall input common mode voltage V
range
CC
H
L
ICM
Electrical Characteristics at Ta = 25˚C, VCC = 5V
Parameter Symbol Conditions
Current drain I
Lockup detection ICT1 1.9 2.8 3.7 µA
capacitor charge current
Capacitor discharge current ICT2 0.32 0.46 0.60 µA
Capacitor charge/discharge current ratio
CT charge voltage VCT1 2.55 2.75 2.95 V
CT discharge voltage VCT2 1.6 1.8 2.0 V
Output Low level voltage V
Output High level voltage V
Hall input sensitivity V
RD/FG output pin Low voltage V
RD/FG output pin leakage current I
HB output Low voltage V
ST pin input current I
R
RD, VFGIRD, IFG
RDL, IFGLVRD, VFG
In drive mode (CT = [L], ST = [L]) 6.5 9.1 mA
CC
In lockup protection mode (CT = [H], ST = [L])
In standby mode (ST = [H]) 110 150 µA
RCD = ICT1/ICT2 5.0 6.0 7.0
CT
IO = 200 mA 0.2 0.3 V
OL
OHIO
HN
HBLIHB
ST
= 200 mA 3.9 4.1 V
Zero peak value 7 15 mV
(Including offset and hysteresis)
= 5 mA 0.1 0.3 V
= 15V 30 µA
= 5 mA 1.0 1.3 V
VST = 5V 75 100 µA
min typ max
3.8 to 16.8 V
3 to 14 V
–0.3 to +0.4 V
0.2 to VCC–1.5 V
Ratings
2.2 3.1 mA
Unit
Truth Table
ST IN
H – – – off off off off off Standby
LLH LH H
–
HL
– – H off of f off – L Lockup protection activated
+
IN
CT OUT1 OUT2 RD FG HB Mode
L
HL
Latch-type RD output is Low during rotation and High during stop.
L
L
L Rotating
Pin Assignment
IN
IN
CT
–
1
+
2
3
LB1862M
10
9
8
RD(FG)
HB
ST
LB1962M
OUT1
GND
4
5
7
6
V
CC
OUT2
Top view
A07357
No. 5657-2/7
Page 3
Block Diagram
LB1862M, LB1962M
0.47 to 1 µF
HALL
CT
V
CC
+
IN
–
IN
HB
Discharge
pulse
Hysteresis amplifier
Thermal protection
circuit
Control
circuit
Charge/discharge
circuit
RD
(LB1862M)
FG
(LB1962M)
Delay circuit
OUT2
M
Delay circuit
OUT1
START/STOP
ST GND
A07359
Sample Application Circuit
C2
C1 = 0.47 to 1 µF
V
CC
H
–
IN
RD
+
IN
(FG)
OUT1
HB
OUT2
ST
CT
GND
A07358
No. 5657-3/7
Page 4
Startup
V
CC
OUT
CT
RD
FG
LB1862M, LB1962M
Power-on
Lockup protection/automatic recovery
Locked Released
OUT
RD
FG
CT
Start/stop
A07360
Output ON
Output OFF Output OFF
ST
OUT
RD
FG
Output OFF
A07361
No. 5657-4/7
Page 5
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
Page 6
LB1862M, LB1962M
1000
Specified substrate (
850
800
600
400
200
Allowable power dissipation, Pd max – mW
0
-20 0 80604020
Pdmax – Ta
114.3 × 76.2 × 1.5 mm
Ambient temperature, Ta – °C
0.5
V
O(sat)L
– I
O
L – V
0.4
O(sat)
0.3
3
glass epoxy)
510
VCC=3.8V
Ta=25°C
100
12
10
– mA
ICC – V
8
CC
CC
6
4
Current drain, I
2
0
02 64 8 10 16 181412 2220
Power supply voltage, VCC – V
I
– V
IN
500
400
– µA
300
IN
IN
-
= L
IN
+
= L
IN
CT = H
ST = H
VCC=5V
0.2
0.1
0
Lower side output saturation voltage, V
1.0
VCC=3.8V
H – V
Output current, IO – A
V
O(sat)
H – I
Ta=25°C
O(sat)
0.8
0.6
0.4
0.2
0
Upper side output saturation voltage, V
Output current, IO – mA
200
Input current, I
100
0
300 4002001000
02 64 8 10 16 181412 20
Input voltage, VIN – V
O
1.0
VRD,VHB-
VCC=3.8V
Ta=25°C
0.8
0.6
– V
HB
,V
0.4
RD
V
0.2
IRD,I
HB
HB
RD
0
300 5004002001000
024 86141210
IRD,IHB – mA
No. 5657-6/7
Page 7
LB1862M, LB1962M
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of October, 1999. Specifications and information herein are subject to change
without notice.
No. 5657-7/7
PS
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