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参数资料
| 型号： | L9942 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO36 |
| 封装： | POWER, SO-36 |
| 文件页数： | 16/21页 |
| 文件大小： | 161K |
| 代理商： | L9942 |
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VReset UD
Vcc for Reset undefined
Below this voltage Reset is not
defined
1.5
V
VReset ON
Vcc low threshold for Reset on
4.5
V
VReset OFF
Vcc high threshold for Reset off
VCC-
0.1
V
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 from VCC pin) + (current sunk from PORT A pins) <= 50 mA.
Power section characteristics. (Tamb = -40 to +85
°C; 8 < VS < 15)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
RdsON
Output resistance
Measured on M1 and M2 pins
Tamb =85
°C, Tj = 150°C
360
m
RdsON
25
°C
Measured on M1 and M2 pins
Tamb =25
°C, Tj =25°C
200
m
Vsmax
Overvoltage protection
threshold
Voltage measured on VS pin
16
17.5
19
V
Vsmin
Undrvoltage protection
threshold
7
7.5
8
V
tovi
Overvoltage protection
intervention time
50
s
ISHC
Short circuit current
Short to VS, GND; load shorted
10
A
tSCPI
Short circuit protection
intervention time
10
s
Thw1
Thermal warning threshold 1
Hysteresis 20
°C
130
°C
Thw2
Thermal warning threshold 2
Hysteresis 20
°C
150
°C
Power section registers.
The power section is controlled by the microcontroller through the following two registers (note that
PAES and BUSIE bits in BPCR register are not related to the power section control):
BPCR
BRIDGE/PORT Control Register
(Address: E2h, Read/write)
Status after reset: 00000000
D0
EN1
Half bridge #1 enable
D1
EN2
Half bridge #2 enable
D2
IN1
Half bridge #1 (M1 output) control bit
D3
IN2
Half bridge #2 (M2 output) control bit
D4
PAES
Polarity selection for PORT A interrupts.
D5
BUSIE
BUS interface enable for PORT A0, 1
D6
not used, read as zero
D7
PIE
Power section diagnostic interrupt enable.
POWER SUPPLY (continued)
L9942
4/21
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相关代理商/技术参数 |
参数描述 |
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| L9942XP1 | 功能描述:低压差稳压器 - LDO Integrated Stepper Bipolar Motor Driver RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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| L9947L | 制造商:STMicroelectronics 功能描述: |
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