参数资料
| 型号： | MC34716EPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 20/27页 |
| 文件大小： | 0K |
| 描述： | IC CONVERTER DDR 26QFN |
| 标准包装： | 2,500 |
| 应用： | 转换器，DDR |
| 输入电压： | 3 V ~ 6 V |
| 输出数： | 2 |
| 输出电压： | 0.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 26-VFQFN 裸露焊盘 |
| 供应商设备封装： | 26-QFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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TYPICAL APPLICATIONS
CONFIGURING THE OUTPUT VOLTAGE:
Channel 1 of the 34716 is a general purpose DC-DC
converter, the resistor divider to the -INV1 node is
responsible for setting the output voltage, according to the
following equation:
680
733
787
840
0.936 - 1.092
0.781 - 0.936
0.625 - 0.780
0.469 - 0.624
? V REF ?
? 1 ?
V OUT
? R 1
? R 2
?
?
893
947
0.313 - 0.468
0.157 - 0.312
1000
0.000 - 0.156
Where V REF is the internal V BG =0.7 V.
Channel 2 is a DDR specific voltage power supply, and the
output voltage is given by the equation:
Table 5. Frequency Selection Table
SOFT START ADJUSTMENT
Table 6 shows the voltage that should be applied to the
V TT ?
V REFIN
2
ILIM1 pin to get the desired desired sort start timing on
channel 1 only.
Where V REFIN is equal to V DDQ .
SWITCHING FREQUENCY CONFIGURATION
The switching frequency will have a value of 1.0 MHz by
connecting the FREQ pin to the GND. If the smallest
frequency value of 200 kHz is desired, then connect the
SOFT START [MS]
3.2
1.6
0.8
0.4
VOLTAGE APPLIED TO ILIM
1.19 - 1.49 V
1.50 - 1.81 V
1.82 - 2.13 V
2.14 - 2.50 V
FREQ pin to VDDI. To program the switching frequency to
another value, an external resistor divider will be connected
Table 6. Soft Start Configurations
FREQUENCY
VOLTAGE APPLIED TO PIN FREQ
200
253
2.341 – 2.500
2.185 - 2.340
R FQH
VDDI
307
360
2.029 - 2.184
1.873 - 2.028
C VDDI
R IH
R IL
R FQL
FREQ
ILIM1
413
466
520
573
627
1.717 – 1.872
1.561 – 1.716
1.405 - 1.560
1.249 - 1.404
1.093 - 1.248
GND
Figure 11. Resistor Divider for Frequency and Soft Start
Adjustment
34716
Analog Integrated Circuit Device Data ?
20
Freescale Semiconductor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34717 | 制造商:SPC Multicomp 功能描述:HEADER R/ANGLE 4WAY 制造商:SPC Multicomp 功能描述:HEADER, R/ANGLE, 4WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONN, RECEPTACLE, 4POS, 3MM; Series:2261(5561); Pitch Spacing:3mm; Contact Termination:Through Hole Right Angle; No. of Contacts:4; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34717EP | 功能描述:开关变换器、稳压器与控制器 5.0A 1.0MHZ DUAL SWITCH RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34717EPR2 | 功能描述:开关变换器、稳压器与控制器 5.0A 1.0MHZ DUAL SWITCH RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34719 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 4WAY |
| MC3471P | 制造商:Motorola Inc 功能描述: |
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