ISL97675 Ver la hoja de datos (PDF) - Renesas Electronics
Número de pieza
componentes Descripción
Fabricante
ISL97675 Datasheet PDF : 21 Pages
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ISL97675
Pin Configuration
ISL97675
(20 LD QFN)
TOP VIEW
20 19 18 17 16
VDDIO 1
EN 2
FSW/PhaseShift 3
ISET 4
NC 5
ISL97675
4mmx4mm
15 PGND
14 OVP
13 RFPWM/DirectPWM
12 FB1
11 FB2
6 7 8 9 10
Pin Descriptions (I = Input, O = Output, S = Supply)
PIN NAME
VDDIO
EN
FSW/PhaseShift
PIN NO.
1
2
3
ISET
NC
FB4
FB3
AGND
FB2
FB1
RFPWM/DirectPWM
4
5, 10
6
7
8, 9
11
12
13
OVP
14
PGND
15
SW
16
FAULT
17
COMP
18
TYPE
S
I
I
I
I
I
I
S
I
I
I
I
S
O
O
I
DESCRIPTION
Decouple with capacitor for internally generated supply rail.
Enable
FSW = 0 ~ 0.25 * VDDIO, Boost Switching Frequency = 1.2MHz with phase shift.
FSW = 0.25 * VDDIO ~ 0.5 * VDDIO, Boost Switching Frequency = 1.2MHz without phase shift.
FSW = 0.5 * VDDIO ~ 0.75 * VDDIO, Boost Switching Frequency = 600KHz without phase shift.
FSW = 0.75 * VDDIO ~ VDDIO, Boost Switching Frequency = 600KHz with phase shift.
Resistor connection for setting LED current, (see Equation 3 for calculating the ILEDpeak).
No Connect.
Input 4 to current source, FB, and monitoring.
Input 3 to current source, FB, and monitoring.
Analog Ground for precision circuits.
Input 2 to current source, FB, and monitoring.
Input 1 to current source, FB, and monitoring.
External PWM dimming with frequency modulation or Direct PWM dimming without frequency
modulation.
When this pin is not biased and a resistor is connected to ground, the dimming frequency will be
set by the Setting Resistor.
When this pin is floating, the part enters Direct PWM mode such that the dimming follows the
input PWM signal without frequency modulation.
Overvoltage protection input.
Power ground (LX Power return).
Input to boost switch.
Gate drive signal for external fault MOSFET. This pin should be left floating when fault MOSFET is
omitted in the application.
External compensation pin.
FN7630 Rev.2.00
Sep 13, 2017
Page 3 of 21
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