参数资料
型号: MAX8785ETI+T
厂商: Maxim Integrated
文件页数: 6/19页
文件大小: 0K
描述: IC CCFL CTRL 28-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: CCFL 控制器
电流 - 电源: 1.5mA
电源电压: 4.5 V ~ 28 V
工作温度: -40°C ~ 85°C
封装/外壳: 28-WFQFN 裸露焊盘
供应商设备封装: 28-TQFN-EP(5x5)
包装: 带卷 (TR)
Full-Bridge Controller for
Piezoelectric Transformers
Typical Operating Characteristics
(Circuit of Figure 1. V IN = 12V, T A = +25°C, unless otherwise noted.)
LOW INPUT-VOLTAGE OPERATION
HIGH INPUT-VOLTAGE OPERATION
(V IN = 12V)
MAX8785A toc01
I FB
LX
(V IN = 24V)
MAX8785A toc02
I FB
LX
LINE-TRANSIENT RESPONSE
MAX8785A toc03
24V
I FB
CH1: 10V/div
CH2: 2V/div
CH3: 1V/div
10 μ s/div
V CNTL = 2.0V
SEL = GND
V FB
CH1: 20V/div
CH2: 2V/div
CH3: 1V/div
10 μ s/div
V CNTL = 2.0V
SEL = GND
V FB
12V
CH2: 2V/div
CH4: 10V/div
40 μ s/div
V IN
MINIMUM BRIGHTNESS OPERATION
AND STARTUP WAVEFORM
MAX8785A toc04
SHDN
LSYNC OPERATION
MAX8785A toc05
LSYNC
COMP
I FB
I FB
4ms/div
V FB
1ms/div
LX
CH1: 2V/div
CH2: 5V/div
CH3: 5V/div
CH4: 2V/div
CH1: 2V/div
CH3: 5V/div
CH4: 10V/div
LAMP-OUT VOLTAGE LIMITING
AND TIMEOUT
MAX8785A toc06
V FB
SECONDARY SHORT-CIRCUIT
PROTECTION AND TIMEOUT
MAX8785A toc07
V FB
CH1: 2V/div
CH2: 2V/div
200ms/div
TFLT
CH1: 2V/div
CH2: 1V/div
200 μ s/div
400 μ s/div
TFLT
6
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