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FAN8903 の電気的特性と機能
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FAN8903のメーカーはFairchild Semiconductorです、この部品の機能は「Power Window Motor Control IC」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 FAN8903 |
| 部品説明 Power Window Motor Control IC |
| メーカ Fairchild Semiconductor |
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FAN8903(KA3903)
Power Window Motor Control IC
www.fairchildsemi.com
Features
• Protections
- Human body protection with a simple switch
- Over current protection with an integrator
- Over voltage protection
- Load dump protection
- Reverse battery voltage protection
• Low off-state quiescent current (150µA)
• Adjustable output control time after
car-key turn-off
• Four selectable operating modes
• Thermal shutdown (TSD)
• Under voltage lockout
Description
The FAN8903 is a monolithic integrated circuit, suitable for
a window motor control and sun roof motor control in auto-
motive systems.
16-DIP-300A
Typical Applications
• Power Window
• Sun Roof
Ordering Information
Device Package Operating Temperature
FAN8903 16-DIP-300A
−40°C ~ +90°C
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.2
1 Page
FAN8903(KA3903)
Internal Block Diagram
Start 15
Start COMP
+
Vref1 −
VCC
16
18.6V
UVLO
Delay
Up 13
Down 14
CS 7
A/O 6
F/C 5
TSD
OVP
Input
Gate drive
logic
−
+ Vref2
Human
protection
Latch 1
Vref
Delay
DQ
CLK Q
Latch 2
GND 1
Mode
selection
Vref
Delay
DQ
CLK Q
5V reference
Vref3
+
−
Vref4
+
−
12 11
M1 M2
2 Vref
8 OUT 1
10 OUT 2
9 PG
3 CT
4 Step
3
3Pages
Start Stage
BAT.
FAN8903
START KEY
R2
10k
R1
300k
VCC
V1
15
COMP1
+
+
C1
47µF
−
0.92V
(at VCC=12V)
FAN8903(KA3903)
VCC
UVLO &
REFERENCE
In the state of the start-key turned off, all the blocks in the FAN8903 are kept to be off because the power is not supplied into
UVLO&REFERENCE block.
When the start-key is turned on, the power is supplied into UVLO block to activate reference block in normal condition.
Step and Auto Time
R5 Rt
FAN8903
2
Vref3
+
−
Vct 3
+
V5 4 −
+
R6 Ct
Q1
If the up/down switch is pushed less than a set time (Ts), TR (Q1) will be turned off and capacitor (Ct) is charged exponentially
until Vct equals to V5. At that time TR (Q1) is turned on and stops the operation.
But if longer than TS, capacitor (Ct) continues its charge until Vct equals to Vref3. Then Q1 is turned on and the auto function
terminates its operation.
The TS and Ta(auto time) were determinate by components (Rt & Ct), external divider and Vref3.
TS = 0.05 × (Rt × Ct), where V5 = 0.25V
Ta = 2.10 × (Rt × Ct), where Vref3 = 4.4V
In the manual mode, the window goes up or down just while a switch is pushed. In the step mode and the auto mode, even after
releasing the switch, the window continues its movements except for pushing the switch again (the topple) or happening to the
stall condition.
6
6 Page
合計 : 16 ページ |
| PDF ダウンロード [ FAN8903 データシート.PDF ] |
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データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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| 部品番号 | 部品説明 | メーカ |
| FAN8902 | DC FAN Motor Controller | Fairchild Semiconductor |
| FAN8903 | Power Window Motor Control IC | Fairchild Semiconductor |