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E-L6258EP(2005) View Datasheet(PDF) - STMicroelectronics

Part Name
Description
View to exact match
E-L6258EP
(Rev.:2005)
ST-Microelectronics
STMicroelectronics ST-Microelectronics
E-L6258EP Datasheet PDF : 22 Pages
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L6258EP
Table 3. Pins Function
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.
3
I1_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
4
I0_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
8
VDD (5V) Supply Voltage Input for logic circuitry
9
GND
Power Ground connection of the internal charge pump circuit
10
11
12
13, 31
14
VCP1
VCP2
VBOOT
VS
OUT2A
Charge pump oscillator output
Input for external charge pump capacitor
Overvoltage input for driving of the upper DMOS
Supply voltage input for output stage. They are shorted internally
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
18, 19
I1_2
See pin 15
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)
Note: The number in parenthesis shows the relevant Power Bridge of the circuit. Pins 18, 19, 1 and 36 are connected together.
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