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参数资料
| 型号： | MC34704BEPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 18/54页 |
| 文件大小： | 0K |
| 描述： | IC PWR MNGMT DC-DC MULT 56-QFN |
| 特色产品： | MC34704 Multi-channel Power Management IC (PMIC) |
| 标准包装： | 1 |
| 应用： | 处理器 |
| 电流 - 电源： | 86mA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-VFQFN 裸露焊盘 |
| 供应商设备封装： | 56-QFN-EP（7x7） |
| 包装： | 标准包装 |
| 产品目录页面： | 809 (CN2011-ZH PDF) |
| 其它名称： | MC34704BEPR2DKR |
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FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
REG1 REGULATED OUTPUT VOLTAGE PIN
(VOUT1) (34704A ONLY)
Connect this pin directly to the load directly and to the
REG6 SWITCHING NODE (SW6) (34704A ONLY)
The inductor is connected between this pin and the VIN
pin.
output filter as close to the pin as possible.
REG6 REGULATED OUTPUT VOLTAGE PIN
I C serial interface clock input.
REG1 BOOTSTRAP CAPACITOR INPUT PIN (BT1)
Connect a 1.0 μ F capacitor between this pin and SW1 pin
to enhance the gate of the Switch Power MOSFET.
I 2 C SERIAL INTERFACE CLOCK INPUT (SCL)
2
I 2 C SERIAL INTERFACE DATA INPUT (SDA)
I 2 C serial interface data input
(VOUT6) (34704A ONLY)
Connect this pin directly to the load directly and to the
output filter as close to the pin as possible.
ANALOG GROUND (AGND)
Analog ground of the IC.
BATTERY VOLTAGE CONNECTION (VIN)
Input decoupling /filtering is required for the device to
operate properly.
POWER RESET OUTPUT SIGNAL
(MICROPROCESSOR RESET) (RST)
This is an open drain output and must be pulled up by an
external resistor to a supply voltage like V IN .
REG7 COMPENSATION NETWORK CONNECTION
(COMP7)
REG7 compensation network connection.
REG7 RESISTOR FEEDBACK NETWORK
REFERENCE VOLTAGE (VREF7) (34704A ONLY)
Connect this pin to the bottom of the feedback resistor
INTERNAL SUPPLY VOLTAGE (VDDI)
Connect a 1.0 μ F low ESR decoupling filter capacitor
between this pin and GND.
BATTERY DETECTION (LION)
Pull this pin high to VIN to indicate a connection to a Li-Ion
battery.
DUAL FUNCTION IC TURN ON/OFF (ONOFF)
This is a hardware enable/disable for the 34704. It can be
connected to a mechanical switch to turn the power On or Off.
divider.
REG2 BOOST STAGE BOOTSTRAP CAPACITOR
REG7 VOLTAGE FEEDBACK INPUT FOR
VOLTAGE REGULATION/PROGRAMMING (FB7)
(34704A ONLY)
Connect the feedback resistor divider to this pin.
REG7 EXTERNAL POWER MOSFET GATE DRIVE
(DRV7) (34704A ONLY)
REG7 external Power MOSFET gate drive.
REG7 OUTPUT VOLTAGE RETURN PIN (VOUT7)
(34704A ONLY)
This is the discharge path of REG7 output voltage.
REG6 VOLTAGE FEEDBACK INPUT FOR
VOLTAGE REGULATION/PROGRAMMING (FB6)
(34704A ONLY)
Connect the feedback resistor divider to this pin.
REG6 BOOTSTRAP CAPACITOR INPUT PIN (BT6)
(34704A ONLY)
Connect a 0.01 μ F capacitor between this pin and SW6 pin
INPUT PIN (BT2U)
Connect a 1.0 μ F capacitor between this pin and SW2U
pin to enhance the gate of the Switch Power MOSFET.
REG2 COMPENSATION NETWORK CONNECTION
(COMP2)
REG2 compensation network connection.
REG2 VOLTAGE FEEDBACK INPUT FOR
VOLTAGE REGULATION/PROGRAMMING (FB2)
Connect the feedback resistor divider to this pin.
REG2 BUCK STAGE BOOTSTRAP CAPACITOR
INPUT PIN (BT2D)
Connect a 1.0 μ F capacitor between this pin and SW2D
pin to enhance the gate of the Switch Power MOSFET.
REG2 POWER SUPPLY INPUT VOLTAGE (PVIN2)
This is the connection to the drain of the high side switch
FET. Input decoupling /filtering is required for proper REG2
operation.
to enhance the gate of the Synchronous Power MOSFET.
34704
Analog Integrated Circuit Device Data
18
Freescale Semiconductor
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