參數(shù)資料
型號(hào)： L6258EA
廠商： STMICROELECTRONICS
元件分類： 運(yùn)動(dòng)控制電子
英文描述： STEPPER MOTOR CONTROLLER, 2 A, PDSO36
封裝： POWER, SO-36
文件頁(yè)數(shù)： 17/23頁(yè)
文件大?。?/td> 214K
代理商： L6258EA
3/23
L6258EA
Table 3. Pin Function
Note: The number in parenthesis shows the relevant Power Bridge of the circuit. Pins 18, 19, 1 and 36 are connected together.
Pin #
Name
Description
1, 36
PWR_GND
Ground connection (1). They also conduct heat from die to printed circuit copper.
2, 17
PH_1, PH_2
These TTL compatible logic inputs set the direction of current flow through the load. A
high level causes current to flow from OUTPUT A to OUTPUT B.
3I1_1
Logic input of the internal DAC (1). The output voltage of the DAC is a percentage of the
Vref voltage applied according to the thruth table of page 7
4I0_1
See pin 3
5
OUT1A
Bridge output connection (1)
6
DISABLE
Disables the bridges for additional safety during switching. When not connected the
bridges are enabled
7
TRI_cap
Triangular wave generation circuit capacitor. The value of this capacitor defines the output
switching frequency
8VDD (5V)
Supply Voltage Input for logic circuitry
9
GND
Power Ground connection of the internal charge pump circuit
10
VCP1
Charge pump oscillator output
11
VCP2
Input for external charge pump capacitor
12
VBOOT
Overvoltage input for driving of the upper DMOS
13, 31
VS
Supply voltage input for output stage. They are shorted internally
14
OUT2A
Bridge output connection (2)
15
I0_2
Logic input of the internal DAC (2). The output voltage of the DAC is a percentage of the
VRef voltage applied according to the truth table of page 7
16
I1_2
See pin 15
18, 19
PWR_GND
Ground connection. They also conduct heat from die to printed circuit copper
20, 35
SENSE2,
SENSE1
Negative input of the transconductance input amplifier (2, 1)
21
OUT2B
Bridge output connection and positive input of the tranconductance (2)
22
I3_2
See pin 15
23
I2_2
See pin 15
24
EA_OUT_2
Error amplifier output (2)
25
EA_IN_2
Negative input of error amplifier (2)
26, 28
VREF2, VREF1
Reference voltages for the internal DACs, determining the output current value. Output
current also depends on the logic inputs of the DAC and on the sensing resistor value
27
SIG_GND
Signal ground connection
29
EA_IN_1
Negative input of error amplifier (1)
30
EA_OUT_1
Error amplifier output (1)
32
I2_1
See pin 3
33
I3_1
See pin 3
34
OUT1B
Bridge output connection and positive input of the tranconductance (1)
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