L9904(2002) データシートの表示（PDF） - STMicroelectronics
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L9904 Datasheet PDF : 17 Pages
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L9904
PIN FUNCTION
N°
Pin
1
ST
2
DG
3
PWM
4
EN
5
DIR
6
PR
7
RX
8
TX
9
K
10
VS
11
CP
12
GH1
13
CB1
14
S1
15
GH2
16
CB2
17
S2
18
GL2
19
GL1
20
GND
Description
Open Drain Switch for Stepup converter
Open drain diagnostic output
PWM input for H-bridge control
Enable input
Direction select input for H-bridge control
Programmable cross conduction protection time
ISO 9141 interface, receiver output
ISO 9141 interface, transmitter input
ISO 9141 Interface, bidirectional communication K-line
Supply voltage
Charge pump for driving a power MOS as reverse battery protection
Gate driver for power MOS highside switch in halfbridge 1
External bootstrap capacitor
Source/drain of halfbridge 1
Gate driver for power MOS highside switch in halfbridge 2
External bootstrap capacitor
Source/drain of halfbridge 2
Gate driver for power MOS lowside switch in halfbridge 2
Gate driver for power MOS lowside switch in halfbridge 1
Ground
PIN CONNECTION (Top view)
ST
DG
PWM
EN
DIR
PR
RX
TX
K
VS
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
SO20
GND
GL1
GL2
S2
CB2
GH2
S1
CB1
GH1
CP
2/17
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