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参数资料
| 型号： | MC34702EKR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 4/39页 |
| 文件大小： | 0K |
| 描述： | IC POWER SUPPLY MCU 3A 32-SOIC |
| 标准包装： | 1 |
| 应用： | 电源 |
| 电流 - 电源： | 60mA |
| 电源电压： | 2.8 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 32-SOIC |
| 包装： | 剪切带 (CT) |
| 配用： | KIT33702DWBEVB-ND - KIT FEATURES THE MC34701 |
| 其它名称： | MC34702EKR2CT |
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PIN CONNECTIONS
Table 1.
Pin Function Description (continued)
A functional description of each pin can be found in the Functional Pin Description section beginning on page 16 .
Pin
20
Pin Name
CS
Formal Name
Current Sense
Definition
Current sense pin of the LDO. Over-current protection of the linear regulator external
power MOSFET. The voltage drop over the LDO current sense resistor RS is sensed
between the CS and LDO pins. The LDO current limit can be adjusted by selecting
the proper value of the current sensing resistor RS.
21
22
LDRV
VIN1
Linear Drive
Input Voltage 1
LDO gate drive of the external pass N-channel MOSFET.
The input supply pin for the integrated circuit. The internal circuits of the IC are
supplied through this pin.
23
VDDI
Power Supply
Internal supply voltage. A ceramic low ESR 1uF 6V X5R or X7R capacitor is
recommended.
26
ADDR
Address
I 2 C address selection. This pin can either be left open, tied to V DDI , or grounded
through a 10k ? resistor.
27
EN1
Enable 1
Enable 1 Input. The combination of the logic state of the Enable 1 and Enable 2
inputs determines operation mode and type of power sequencing of the IC.
28
EN2
Enable 2
Enable 2 Input. The combination of the logic state of the Enable 1 and Enable 2
inputs determines operation mode and type of power sequencing of the IC.
29
RT
Reset Timer
This pin allows programming of the Power-ON Reset delay by means of an external
RC network.
30
RST
Reset Output
(Active LOW)
The reset control circuit monitors both the switching regulator and the LDO feedback
voltages. It is an open drain output and has to be pulled up to some supply voltage
(e.g., the output of the LDO) by an external resistor.
31
32
CLKSEL
CLKSYN
Clock Selection
Clock Synchronization
This pin sets the CLKSYN pin as either an oscillator output or a synchronization input
pin. The CLKSEL pin is also used for the I 2 C address selection.
Oscillator output/synchronization input pin.
34702
Analog Integrated Circuit Device Data ?
4
Freescale Semiconductor
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