LC-32LE340/343
LC-40LE340/343
15
.
Pin Configuration
Figure 3. MLP 5x6mm Pin Configuration (Bottom View)
Pin Definitions
Pin #
Name Description
P1, 6-12
SW
Switching Node
. Junction of high-side and low-side MOSFETs.
P2, 2-5
VIN
Power Input Voltage
. Connect to the main input power source.
P3, 21-23
PGND
Power Ground
. Power return and Q2 source.
1 BOOT
High-Side Drive BOOT Voltage
. Connect through capacitor (C
BOOT
) to SW. The IC
includes an internal synchronous bootstrap diode to recharge the capacitor on this pin to
V
CC
when SW is LOW.
13 PGOOD
Power-Good Flag
. An open-drain output that pulls LOW when FB is outside the limits
specified in electrical specs. PGOOD does not assert HIGH until the fault latch is enabled.
14 EN
ENABLE
. Enables operation when pulled to logic HIGH or left open. Toggling EN resets the
regulator after a latched fault condition. This input has an internal pull-up when the IC is
functioning normally. When a latched fault occurs, EN is discharged by a current sink.
15 VCC
Input Bias Supply for IC
. The IC’s logic and analog circuitry are powered from this pin.
This pin should be decoupled to AGND through a >1µF X5R/X7R capacitor.
16 AGND
Analog Ground
. The signal ground for the IC. All internal control voltages are referred to
this pin. Tie this pin to the ground island/plane through the lowest impedance connection.
17 ILIM
Current Limit
. A resistor (R
ILIM
) from this pin to AGND can be used to program the current-
limit trip threshold lower than the default setting.
18 R(T)
Oscillator Frequency
. A resistor (R
T
) from this pin to AGND sets the PWM switching
frequency.
19 FB
Output Voltage Feedback
. Connect through a resistor divider to the output voltage.
20 COMP
Compensation
. Error amplifier output. Connect the external compensation network
between this pin and FB.
24 NC
No Connect
. This pin is not used.
25 RAMP
Ramp Amplitude
. A resistor (R
RAMP
) connected from this pin to VIN sets the ramp
amplitude and provides voltage feedforward functionality.
33
LC-32LE340/343
LC-40LE340/343
Содержание LC-32LE340E
Страница 39: ...LC 32LE340 343 LC 40LE340 343 21 c BCM3556 Block Diagram 39 LC 32LE340 343 LC 40LE340 343 ...
Страница 48: ...LC 32LE340 343 LC 40LE340 343 30 b Pinning 48 LC 32LE340 343 LC 40LE340 343 ...
Страница 54: ...LC 32LE340 343 LC 40LE340 343 35 c Pinning 54 LC 32LE340 343 LC 40LE340 343 ...
Страница 61: ...LC 32LE340 343 LC 40LE340 343 b Block Diagram b Block Diagram 61 LC 32LE340 343 LC 40LE340 343 ...
Страница 62: ...LC 32LE340 343 LC 40LE340 343 Figure 8 Pin Diagram 62 LC 32LE340 343 LC 40LE340 343 ...
Страница 76: ...LC 32LE340 343 LC 40LE340 343 57 Video Settings Audio Settings 76 LC 32LE340 343 LC 40LE340 343 ...
Страница 77: ...LC 32LE340 343 LC 40LE340 343 58 Options 1 Menu Options 2 Menu 77 LC 32LE340 343 LC 40LE340 343 ...
Страница 78: ...LC 32LE340 343 LC 40LE340 343 59 Tuner Settings Menu Source Settings Menu 78 LC 32LE340 343 LC 40LE340 343 ...
Страница 79: ...LC 32LE340 343 LC 40LE340 343 60 Diagnostic Menu 21 General Block Diagram 79 LC 32LE340 343 LC 40LE340 343 ...
Страница 80: ...LC 32LE340 343 LC 40LE340 343 NOTES 80 LC 32LE340 343 LC 40LE340 343 ...
Страница 139: ...Notes ...