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參數(shù)資料
| 型號： | L9942 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Super Smart Motor Bridge Driver(電機(jī)橋驅(qū)動器) |
| 中文描述： | 超級智能電機(jī)橋式驅(qū)動器（電機(jī)橋驅(qū)動器） |
| 文件頁數(shù)： | 4/21頁 |
| 文件大?。?/td> | 160K |
| 代理商： | L9942 |
Symbol
V
Reset UD
Parameter
Test Condition
Below this voltage Reset is not
defined
Min.
Typ.
Max.
1.5
Unit
V
Vcc for Reset undefined
V
Reset ON
V
Reset OFF
Vcc low threshold for Reset on
Vcc high threshold for Reset off
4.5
V
V
VCC-
0.1
NOTE:
The IoRUN current is the maximum amount of current that the voltage regulator can deliver to external loads when the micro is not in STOP
mode.
This means:
(current sunk fromVCC pin) + (current sunk from PORT A pins) <= 50 mA.
Power section characteristics.
(T
amb
= -40 to +85
°
C; 8 < V
S
< 15)
Symbol
RdsON
Parameter
Test Condition
Measured on M1 and M2 pins
T
amb
= 85
°
C, T
j
= 150
°
C
Measured on M1 and M2 pins
T
amb
= 25
°
C, T
j
= 25
°
C
Voltage measured on VS pin
Min.
Typ.
Max.
360
Unit
m
Output resistance
RdsON
25
°
C
V
smax
200
m
Overvoltage protection
threshold
Undrvoltage protection
threshold
Overvoltage protection
intervention time
Short circuit current
Short circuit protection
intervention time
Thermal warning threshold 1
Thermal warning threshold 2
16
17.5
19
V
V
smin
7
7.5
8
V
tovi
50
μ
s
I
SHC
t
SCPI
Short to VS, GND; load shorted
10
A
μ
s
10
Thw1
Thw2
Hysteresis 20
°
C
Hysteresis 20
°
C
130
150
°
C
°
C
Power section registers.
The power section is controlled by the microcontroller through the following two registers (note that
PAES and BUSIE bits in BPCRregister are not relatedto the power section control):
BPCR
BRIDGE/PORT Control Register
(Address: E2h, Read/write)
Status after reset: 00000000
D0
D1
D2
D3
D4
D5
D6
D7
EN1
EN2
IN1
IN2
PAES
BUSIE
Half bridge #1 enable
Half bridge #2 enable
Half bridge #1 (M1 output) control bit
Half bridge #2 (M2 output) control bit
Polarity selection for PORT A interrupts.
BUS interface enable for PORT A0, 1
not used, readas zero
Power section diagnostic interrupt enable.
PIE
POWERSUPPLY
(continued)
L9942
4/21
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