LB11660FV
Overview
The LB11660FV is a single-pha bipolar drive half-predriver motor driver that can easily implement a direct PWM driver motor driver circuit with excellent efficiency. The LB11660FV is particularly well suited for the miniature fans ud in rvers.
Features
• Single-pha full-wave drive (15V, 1.5A transistors are built in) Half predriver with integrated high side transistor
社区禁毒宣传简报• Built-in variable speed function controlled by an external input
The LB11660FV can implement quiet, low-vibration variable speed control using externally clocked high side transistor direct PWM drive.
• Minimum speed tting pin
• Current limiter circuit (The limit value is determined by Rf; I O = 1A when RF = 0.5Ω) • Built-in kickback absorption circuit
• Soft switching circuit makes low current consumption, low loss, and low noi drive possible at pha switching • Built-in HB
• Built-in lock protection and automatic recovery circuits (built-in on/off ratio switching circuit controlled by the supply voltage)
• FG (speed detection) output
• Built-in thermal protection circuit (design guarantee)
Monolithic Digital IC
Single-Pha Full-Wave Fan Motor Driver
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit V CC maximum supply voltage V CC max 20 V
VM maximum supply voltage VM max 20 V
OUT pin maximum output current I OUT max Rf ≥ 0.39Ω 1.5
A
OUT pin output voltage 1 V OUT max 1 20 V
OUT pin output voltage 2 V OUT max 2 T ≤ 0.4μs 26.5 V
PRE pin maximum source
current
IPSO max 30 mA
PRE pin maximum sink current IPSI max -7 mA
PRE pin output voltage VP max 20 V
HB maximum output current HB max 10 mA
VTH input pin voltage VTH max 7 V
FG output pin voltage VFG max 18 V
FG output current IFG max 10 mA
Allowable power dissipation Pd max When mounted on a circuit board *1 0.8 W
Operating temperature Topr *2 -30 to +90 °C
Storage temperature Tstg -55 to +150 °C
*1 Specified circuit board : 114.3 × 76.1 × 1.6mm3, glass epoxy.
*2: Tj max is 150°C. This device must be ud under conditions such that the chip temperature does not exceed Tj = 150°C during operation.
Recommended Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit V CC supply voltage V CC 4 to 15 V
V M supply voltage VM 3 to 15 V
Current limiter operation range ILIM 0.6 to 1.2 V
VTH input level voltage range VTH 0 to 6 V
Hall nsor input common-mode
input voltage range
VICM 0.2 to 3 V
Electrical Characteristics Unless otherwi specified Ta = 25°C, V CC = 12V
Ratings
Parameter Symbol Conditions
min typ max
Unit
Circuit current I CC1 Drive
mode 9 12 mA
HB voltage VHB IHB = 5mA 1.05 1.25 1.40 V
6VREG voltage V6VREG 6VREG = 5mA 5.80 6 6.20 V
CT pin high-level voltage VCTH 3.4 3.6 3.8 V
CT pin low-level voltage VCTL 1.4 1.6 1.8 V
ICT pin charge current 1 ICTC1 V CC = 12V 1.7 2.2 2.7 μA
ICT pin charge current 2 ICTC2 V CC = 6V 1.3 1.8 2.3 μA
ICT pin discharge current 1 ICTD1 V CC = 12V 0.110.15 0.19 μA
ICT pin discharge current 2 ICTD2 V CC = 6V 0.340.44 0.54 μA
ICT charge/discharge current
ratio 1
RCT1 V CC = 12V 1215 18 Times
ICT charge/discharge current
ratio 2
RCT2 V CC = 6V 3 4 5 Times
ICT charge/discharge ratio
threshold voltage
VRCT 6 6.6 7.3 V
VTH bias current IBVTH -2-1 0 μA
OUT output high saturation voltage V OH I O = 200mA, RL = 1Ω 0.6
0.8
V运营团队
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Continued from preceding page.
Ratings
Parameter Symbol
Conditions
min typ max
Unit心情难过的图片
PRE output low saturation voltage
V PL
I O = 5mA
0.2
0.4
V
PRE output high saturation voltage V PH
I O = -20mA
0.9
1.2
V
Current limiter
VRf
V CC - VM
450500 550
mV
PWM output pin high-level voltage
VPWMH
2.2
2.5
2.8 V
PWM output pin low-level voltage
VPWML
0.4
0.5
0.7 V
PWM external C charge current IPWM1
-23-18 -14
μA
PWM external C discharge current
IPWM2
18
24
30 μA
PWM oscillator frequency FPWM C = 200pF
19
23
27
kHz
Hall nsor input nsitivity VHN Zero peak value (including offt and hysteresis) 15 25 mV
FG output pin low-level voltage VFG/RD IFG/RD = 5mA 0.2 0.3 V FG output pin leakage current IFGL/IRDL VFG/RD = 7V 30 μA Thermal protection circuit
THD
Design target value*3
150
180
210
°C
*3: This is a design guarantee and is not tested in individual units. The thermal protection circuit is included to prevent any thermal damage to the IC. Since this考生平台
would imply operation outside the IC's guaranteed temperature range, the application thermal design must be such that the thermal protection circuit will not operate if the fan is operating constantly.
Package Dimensions
Pin Assignment
unit : mm (typ) 3178B
Truth Table
IN- IN+ VTH CPWM CT OUT1 OUT2 PRE1 PRE2 FG Mode
High Low High Off Low High Low
Low High
Low High
Off High High Low Off During rotation − drive
High Low
Off Off Low High Low
Low High High Low
Low
Off Off High Low Off
During rotation − regeneration High Low
Off Off Low High Low
Low High - - High
Off Off High Low Off
Lock protection CPWM – High is the state where CPWM > VTH, and CPWM– Low is the state where CPWM < VTH.
Top view
OUT2 1
23
411 15 8
5
10 9
7
12 613 14 16 V CC VTH VM RMI CPWM FG IN+
HB IN -CT 6VREG GND
OUT1 PRE2PRE1LB11660FV
Application Circuit Example 1
*1. P ower supply and ground lines
The IC ground is the control current power supply system ground, and the external n-channel transistor ground is the motor power supply system ground.
The two systems should be formed from parate lines and the control system external components should be connected to the IC ground.
*2. Regeneration power supply stabilization capacitor
U a 4.7µF/25V capacitor at least for CM, which is the power supply stabilization capacitor for both PWM drive and kickback absorption.
The capacitor CM must be connected to prevent destruction of the IC when power is applied or removed.
*3.S peed Control
(1) Control voltage
The PWM duty is determined by comparing the VTH pin voltage with the PWM oscillator waveform.
When the VTH voltage falls, the on duty increas and when the VTH voltage falls below the PWM output low level, the duty will go to 100%.
相似三角形符号(2) Thermistor
For thermistor applications, normally the 6VREG level will be resistor divided and the divided level input to the VTH pin.
The PWM duty is changed by changes in the VTH pin voltage due to changes in temperature.
*4. Current limiter tting
The current limiter circuit operates if the voltage across the resistor between V CC and the VM pin exceeds 0.5V.
Since the current limiter circuit applies limitation at a current determined by I O = VRf/Rf (where VRf = 0.5V (typical), Rf: resistance of the current detection resistor), the current limiter will operate at I O = 1A when Rf = 0.5Ω.
The resistor RF must be connected in the circuit and it must have a value such that the circuit operates within the recommended current limiter operating range.
*5. H all nsor input
Lines that are as short as possible must be ud to prevent noi from entering the system. The Hall nsor input circuit consists of a comparator with hysteresis (20mV). We recommend that the Hall nsor input level be at least three times this hysteresis, i.e. at least 60mVp-p.
*6. P WM oscillator frequency tting capacitor The PWM oscillator oscillates at f = 23kHz when CP is 200pF and at f = 46kHz when CP is 100pF, and this frequency becomes the PWM reference frequency.
Note that the PWM frequency is given approximately by the following equation. f [kHz] ≈ (4.6×106) ÷C [pF] *7. F G output
This is an open collector output, and a rotation count detection function can be implemented using this FG output, which corresponds to the pha switching. This pin must be left open if unud. *8. H B pin This pin provides a Hall effect nsor bias constant-voltage output of 1.25V . *9. R MI pin
This pin is the speed control minimum speed tting.
The minimum output duty is t by R3 and R4. Leave R4 open to have the motor stop when the duty
is 0%.
Rotation Control Timing Chart
高中数学知识
VTH(V)
PWM duty(%)
Duty 100%
Duty 0%
VPWML VPWMH
RMI
虎儿2.5V
0.5V
PWM control variable speed mode Full speed mode
Minimum speed
tting rotation
Application Circuit Example 2
SANYO mounting circuit board (Component values are provided for reference purpos)
Parts List
D1 : SBM30-03-Tr (SANYO)
Q1, 2 : CPH3418 (SANYO)
3225
R1 :
0.51Ω size
单位接收证明模板1608
15kΩ size
R2 :
1608
39kΩ size
R3 :
1608
R4 :
20kΩ size
1608
2.2Ω size
R5 :
C1 :
4.7μF/25V size 3216
1608
C2 :
2.2μF size
1608
2.2μF size
C3 :
C4 : 220pF size 1005
C5 :
1608
0.47μF size
C6, 7 : No connection
