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参数资料
| 型号： | MC34845AEP |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR BACKLIGHT 6CH 24QFN |
| 产品变化通告： | AMPD Product Discontinuation 12/Dec/2012 |
| 标准包装： | 490 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 频率： | 1.08MHz ~ 1.32MHz |
| 电源电压： | 5 V ~ 21 V |
| 输出电压： | 60V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-UFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
ELECTRICAL CHARACTERISTICS
STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS
Table 3. Static and Dynamic Electrical Characteristics (continued)
Characteristics noted under conditions V IN = 12 V, V OUT = 35 V, I LED = 30 mA, f S = 600 kHz, f PWM = 600 Hz - 40 ° C ≤ T A ≤
85 ° C, unless otherwise noted. Typical values noted reflect the approximate parameter means at T A = 25°C under nominal
conditions, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
BOOST (CONTINUED)
Line Regulation
I LED /V IN
%/V
V IN = 7.0 V to 21 V, I CH = 30 mA
Load Regulation
V LED = 24 V to 40 V (all Channels), I CH = 30 mA
I LED /V LED
-0.2
-0.2
-
-
0.2
0.2
%/V
Minimum Duty Cycle
Maximum Duty Cycle
D MIN
D MAX
-
88
10
90
15
-
%
%
OVP Internally Fixed Value
V OVP_INT
V
(no external voltage resistor divider)
OVP Programming Range (9)
(set through an external resistor divider)
V OVP_EXT
56
15
60
-
64
60
V
OVP Reference Voltage
OVP Sink Current
V REF_OVP
I SINK_OVP
6.3
-
6.9
0.2
7.5
-
V
μ A
Switching Frequency
f S
kHz
34845, 34845C
34845A
34845B, 34845D
540
1080
270
600
1200
300
660
1320
330
Soft Start Time (Fs=600 kHz, 100% PWM duty)
Soft Start VOUT Overshoot (Fs=600 kHz, 100% PWM duty)
Boost Switch Rise Time
Boost Switch Fall Time
Current sense Amplifier Gain
OTA Transconductance
Transconductance Sink and Source Current Capability
t SS
SS_ VOUT
BOOST_t R
BOOST_t F
A CSA
G M
I SS
-
-
-
-
-
-
-
3.0
-
8.0
6.0
9.0
200
100
-
OVP
-
-
-
-
-
ms
V
ns
ns
μ S
μ A
Slope Compensation
V SLOPE
V/ μ s
34845, 34845C
34845A
34945B, 34845D
-
-
-
0.52
0.73
0.22
-
-
-
LED DRIVER
LED Driver Sink Current
I LED
mA
R ISET = 51 k Ω 0.1%, PWM = 3.3 V
R ISET = 5.1 k Ω 0.1%, PWM = 3.3 V
ISET Pin Voltage
R ISET = 5.1 k Ω 0.1%
Regulated Minimum Voltage Across LED Drivers
Pulse Width > 400ns
LED Current Channel to Channel Tolerance
10 mA ≤ I LED ≤ 30 mA
3.0 mA ≤ I LED < 10 mA
V ISET
V MIN
I TOLERANCE
2.88
29.4
2.011
0.675
-2.0
-4.0
3.0
30
2.043
0.75
-
-
3.12
30.6
2.074
0.825
2.0
4.0
V
V
%
34845
Analog Integrated Circuit Device Data
6
Freescale Semiconductor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34845AEPR2 | 功能描述:LED照明驱动器 6-Ch LED Backlt Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MC34845BEP | 功能描述:USB 接口集成电路 6-Ch LED Backlt Driver RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MC34845BEPR2 | 功能描述:USB 接口集成电路 6-Ch LED Backlt Driver RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MC34845CEP | 功能描述:LED照明驱动器 6-Ch LED Backlt Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MC34845CEPR2 | 功能描述:LED照明驱动器 6-Ch LED Backlt Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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