参数资料
型号: MC34848EPR2
厂商: Freescale Semiconductor
文件页数: 13/38页
文件大小: 0K
描述: IC LED DVR BACKLIGHT 8CH 48QFN
产品变化通告: AMPD Product Discontinuation 12/Dec/2012
标准包装: 2,000
恒定电流:
恒定电压:
拓扑: PWM,升压(升压)
输出数: 8
内部驱动器:
类型 - 主要: 背光
频率: 200kHz ~ 1.2MHz
电源电压: 2.6 V ~ 3.6 V
输出电压: 45V
安装类型: 表面贴装
封装/外壳: 48-VFQFN 裸露焊盘
供应商设备封装: 48-QFN-EP(7x7)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
ELECTRICAL CHARACTERISTICS
ELECTRICAL PERFORMANCE CURVES
ELECTRICAL PERFORMANCE CURVES
TYPICAL PERFORMANCE CURVES (T A =25°C)
70.00
69.90
69.80
69.70
69.60
69.50
69.40
69.30
69.20
69.10
69.00
100.0
99.0
98.0
97.0
96.0
95.0
94.0
93.0
92.0
91.0
90.0
19
20
21
22
23
24
25
26
27
28
29
20
21
22
23
24
25
26
27
28
70.00
69.90
69.80
69.70
69.60
69.50
69.40
69.30
69.20
69.10
69.00
Vin, volts
Figure 7. Line Regulation, V IN Changing
Vin, volts
Figure 10. Boost Efficiency vs Input Voltage
100.0
99.0
98.0
97.0
96.0
95.0
94.0
93.0
92.0
91.0
90.0
10
11
12
13
14
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
VPVCC, volts
Figure 8. Line Regulation, V PVCC Changing
70.00
69.90
69.80
69.70
69.60
69.50
69.40
69.30
69.20
69.10
69.00
Load Current, Am ps
Figure 11. Boost Efficiency vs Load Current
Note: Typical Performance Curves were performed under
the following conditions: f SW = 700 kHz, V IN = 24 V, V PVCC =
12 V, V DVDD = 3.3 V, and R L = 70 Ω . The following external
components are used: FDS3692 (Boost FET), FDS4675 (Q-
FET), L = 22 μ H (DCR = 54 m Ω ), C TOUT = 30 μ F, SS36-E3
(Schottky diode). The efficiency measurements do not
include Q-FET losses.
2.8
3.0
3.2
3.4
3.6
3.8
VDVDD, v olts
Figure 9. Line Regulation, V DVDD Changing
34848
Analog Integrated Circuit Device Data
Freescale Semiconductor
13
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