参数资料
型号: ISL97635IRZ-T
厂商: Intersil
文件页数: 10/28页
文件大小: 0K
描述: IC LED DRVR WHT/RGB BCKLGT 24QFN
标准包装: 6,000
拓扑: PWM,升压(升压)
输出数: 8
内部驱动器:
类型 - 主要: 车载,背光
类型 - 次要: RGB,白色 LED
频率: 600kHz,1.2MHz
电源电压: 6 V ~ 24 V
输出电压: 34.5V
安装类型: 表面贴装
封装/外壳: 24-VFQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
ISL97635
Pinout
ISL97635
(24 LD QFN)
TOP VIEW
SMBCLK
SMBDAT
FPWM
PWMO
GND
PWMI/EN
1
2
3
4
5
6
24
7
23
8
22
9
21
10
20
11
19
12
18
17
16
15
14
13
PGND
PGND
OVP
IIN0
IIN1
IIN2
Pin Descriptions (I = Input, O = Output, S = Supply)
PIN
1
2
3
NAME
SMBCLK
SMBDAT
FPWM
TYPE
I
I/O
I
DESCRIPTION
SMBus serial clock input
SMBus serial data input and output
Connect a capacitor between FPWM and GND to set the DPWM frequency. FPWM = 5.4μ/C FPWM
If SMBus PWM or DPST mode is used, connect C FPWM to GND to set the dimming frequency. Also,
connect C PWMO between V PWMO and GND pins for DPST operation. If DC-to-PWM mode is used,
connect C FPWM to set the dimming frequency and apply a 0.21V to 1.21V at V PWMO .
4
PWMO
I/O
PWMI buffered output. If one connects a capacitor between PWMO and GND, it forms a low pass filter
with an internal 40k Ω resistor, which filters the PWMI signal for DPST operation when Reg 0x01 = 0x01.
If one applies a 0.2V to 1.2V DC input voltage, the output will be PWM with duty cycle proportional to the
DC input.
5
6
GND
PWMI/EN
S
I
Analog GND and LED power return
Dual Functions: Enable pin and PWM brightness control pin or DPST control input. DO NOT let
PWMI/EN floating. The device needs 4ms for initial power-up Enable, then this pin can be applied with
a PWM signal with off-time no longer than 28ms.
7
8
9
10
11
12
13
14
15
16
17, 18
19, 20
21
IIN7
IIN6
IIN5
IIN4
RSET
IIN3
IIN2
IIN1
IIN0
OVP
PGND
LX
FAULT
10
I
I
I
I
I
I
I
I
I
I
S
I
O
Input 7 to current source, FB, and monitoring
Input 6 to current source, FB, and monitoring
Input 5 to current source, FB, and monitoring
Input 4 to current source, FB, and monitoring
Resistor connection for setting LED current, (see Equation 1 for calculating the I LEDmax )
Input 3 to current source, FB, and monitoring
Input 2 to current source, FB, and monitoring
Input 1 to current source, FB, and monitoring
Input 0 to current source, FB, and monitoring
Overvoltage protection input
Power ground (LX Power return)
Input to boost switch
Fault disconnect switch
FN6434.2
December 22, 2008
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