LB11988V-TLM-E [ONSEMI]
电流线性驱动三相 BL 电机驱动器;
| 型号： | LB11988V-TLM-E |
| 厂家： | 
ONSEMI |
| 描述： | 电流线性驱动三相 BL 电机驱动器 电动机控制 电机 驱动 光电二极管 输出元件 驱动器 |
| 文件： | 总6页 (文件大小：83K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA0377A
LB11988V
Monolithic Digital IC
Fan Motor Driver
http://onsemi.com
Overview
LB11988V is a motor driver IC optimal for driving the DC fan motors.
Functions
• Three-phase full-wave current linear drive
• Built-in current limiter circuit
• Built-in saturation prevention circuits in both the upper and lower sides of the output stage
• Forward/backward rotation direction setting circuit built in
• FG amplifier
• Thermal shutdown circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Maximum supply voltage
V
max
24
24
CC
V
max
V
S
Maximum output current
Allowable power dissipation
Operating temperature
Storage temperature
I
max
1.3
A
O
Pd max
Topr
Independent IC
0.5
W
°C
°C
-30 to +75
-55 to +150
Tstg
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.
Allowable Operating Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Supply voltage
V
S
5 to 22
7 to 22
V
V
CC
Hall input amplitude
V
Between Hall inputs
30 to 80
mVo-p
HALL
Semiconductor Components Industries, LLC, 2013
May, 2013
20812 SY 20120124-S00010//D1306 TI IM B8-7391 No.A0377-1/6
LB11988V
Electrical Characteristics at Ta = 25°C, V
= 12V, V = 12V
S
CC
Ratings
typ
Parameter
Symbol
Conditions
Unit
mA
min
max
24
V
current drain
I
R = 560Ω (Y)
L
15
CC
Output
CC
Output saturation voltage
V
V
I
sat1
sat2
I
= 500mA, Rf = 0.5Ω, Sink + Source
O
2.1
2.6
2.6
3.5
1.0
V
V
O
(Saturation prevention function included)
I
= 1.0A, Rf = 0.5Ω, Sink + Source
O
O
(Saturation prevention function included)
Output leakage current
Hall amplifier
leak
mA
O
Input offset voltage
Input bias current
Common-mode input voltage
FR
V
V
(HALL)
(HALL)
(HALL)
-6
3
+6
3
mV
μA
V
off
V
V
, W
IN IN
1
b
V
-3
cm
CC
Threshold voltage
Input bias current
Current limiter
V
4
8
V
FRTH
Ib (FR)
-5
μA
LIM pin current limit level
I
Rf = 0.5Ω, With the Hall input logic states fixed
1
A
V
LIM
(U, V, W = high, high, low)
Saturation
Saturation prevention circuit
lower side voltage setting
FG amplifier
V
sat
RL = 560Ω (Y), Rf = 0.5Ω, The voltage between
0.28
O
(DET)
each output and the corresponding Rf.
Upper side output saturation voltage
Lower side output saturation voltage
Hysteresis
Vsatu (SH)
Vsatd (SH)
Vhys
11.8
V
V
0.3
23
mV
°C
TSD operating temperature
T-TSD
Design target value*
170
Note * : Items shown to be design target values in the conditions column are not measured.
Package Dimensions
unit : mm (typ)
3315
9.75
24
13
1
12
0.15
0.8
0.3
(0.48)
SSOP24J(275mil)
No.A0377-2/6
LB11988V
Pd max - Ta
0.6
0.5
0.4
0.3
0.2
Independent IC
0.30
0.1
0
-30
-10
10
30
50
70
90
Ambient Temperature, Ta - °C
Pin Assignment
LB11988V
Top view
Truth Table and Control Functions
Hall input
Note : The “H” state for FR is defined as a voltage of 8V or higher, and the
“L” state for FR is defined as a voltage of 4V or lower.
Source→Sink
FR
U
H
V
H
W
L
(When V
CC
= 12V.)
V → W
W → V
U → W
W → U
U → V
V → U
W → V
V → W
W → U
U → W
V → U
U → V
H
1
2
3
4
5
6
L
Note : For the Hall inputs, the input high state is defined to be the state
where the (+) input is higher than the corresponding (-) input by
0.01V or higher, and the input low state is defined to be the state
where the (+) input is lower than the corresponding (-) input by
0.01V or higher.
H
H
H
L
L
L
L
L
H
H
L
H
L
H
L
H
L
H
H
H
L
Note : Since this drive technique is a 180° current application scheme, the
phases other than the sink and the source phases will not turn off.
H
L
L
L
No.A0377-3/6
LB11988V
Block Diagram
Logarithmic conversion and differential
distribution
Synthesized output logarithmic
compression block
Hall input synthesis block (linear matrix)
No.A0377-4/6
LB11988V
Equivalent Circuit
Pin name
Equivalent circuit
+
U
IN
-
U
IN
+
V
IN
Input +
Input -
-
V
IN
200Ω
200Ω
+
W
IN
-
W
IN
100μA
U
OUT
V
S
V
V
CC
OUT
W
OUT
RF
150μA
Output
V
S
Lower side oversaturation
prevention circuit input block
200Ω
30kΩ
RF
FR
V
CC
200μA
200Ω
FR
1/2 V
CC
FC
V
CC
10kΩ
FC
FGOUT
V
V
CC
CC
FGOUT
No.A0377-5/6
LB11988V
Pin Functions
Pin No.
Pin name
GND
Function
6
Ground for circuits other than the output transistors.
Note that the Rf pin will be at the lowest potential of the output transistors.
This is the FG amplifier output pin. Internally, it is a resistive load. (Pull up)
3
5
9
FGOUT
FR
Forward/reverse switching pin
FC
+
Corrects the frequency characteristics of the saturation prevention circuit loop and current limiter circuit.
-
+
-
10, 11
12, 14
15, 16
U
, U
U-phase Hall input. Logic high refers to the state where IN > IN .
IN
IN
IN
IN
+
+
-
+
-
V
, V
IN
V-phase Hall input. Logic high refers to the state where IN > IN .
-
+
-
W
, W
W-phase Hall input. Logic high refers to the state where IN > IN .
IN
18
V
Power supply provided to all IC internal circuits other than the output block.
This voltage must be stabilized so that ripple and noise do not enter the IC.
Output block power supply
CC
19
5
V
S
RF
Used for output current detection. The current limiter circuit operates using the resistor (Rf) connected between this
pin and ground.
Note that the lower side saturation prevention circuit operates according to the voltage that appears on this pin.
Since the over-saturation level is set by this voltage, the level of the lower side saturation prevention circuit may be
degraded in the large current region if the value of Rf is made extremely small.
U-phase Hall output.
23
24
1
U
V
OUT
OUT
V-phase Hall output.
W-phase Hall output.
(These pins include internal spark killer diodes.)
W
OUT
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performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
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PS No.A0377-6/6
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