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参数资料
| 型号： | KIT18730EPEVBE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 15/35页 |
| 文件大小： | 0K |
| 描述： | KIT FOR MPC18730 PMIC |
| 标准包装： | 1 |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 5，非隔离 |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 200kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板，软件 |
| 已用 IC / 零件： | MPC18730 |
| 相关产品： | MPC18730EPR2-ND - IC PMIC PROGR 5-OUTPUTS 64-QFN MPC18730EP-ND - IC PMIC PROGR 5-OUTPUTS 64-QFN |
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FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
DUTY CONTROL PINS (DMAX1, DMAX2)
Connected external voltage to this pin via capacitance can
control the duty of DC/DC converter switching. Use of the pin
for this is not recommended.
REGULATOR CONTROL PINS (SREGC1, SREGC2,
SREGC3)
Feed back pin for each series regulators. This pin voltage
is compared with internal reference voltage. Input the feed
back voltage that divided SREGO voltage by resistances.
REFERENCE FEEDBACK PINS (EAOUT1, EAOUT2)
Output node of internal error amp. for DC/DC converter 1
and 2. Used for phase compensation.
INPUT MINUS PINS (EAIN1, EAIN2)
Minus input of internal error amp. for DC/DC converter 1
and 2. Used for phase compensation.
CHARGE PUMP CAPACITOR PIN (CH_PUMP)
In case of use higher voltage than VGATE externally,
connect capacitance and diodes between VGATE. The
charge pump structure can output VGATE + VB - 2 x VF
voltage. There is no meaning for Ni-MH or dry cell battery,
because the VB voltage is almost same as 2 x VF voltage.
Recommend to use for Li-Ion battery use.
GATE VOLTAGE PIN (VGATE)
Output pin of boost converter for gate drive voltage. The
output voltage is decided by VGSEL input.
SWITCHING FOR GATE VOLTAGE PIN (SWGATE)
Switching pin for VGATE boost converter. Connect to
external inductance.
REGULATOR OUTPUT PINS (SREGO1, SREGO2,
SREGO3)
Series regulator output pins. All output voltages can be
variable with internal DAC via serial I/F.
REGULATOR INPUT PINS (SREGI1, SREGI2,
SREGI3)
Series regulator power input pins. To be connected to
battery voltage in general.
GROUND PIN (GND)
Ground pin for logic and analog circuit portion (not power
portion). Recommend to connect to clean ground which
separated with power ground line.
REFERENCE VOLTAGE PIN (VREF)
Output of internal reference voltage. It can be used
externally. Output current capacity is less than 300 μ A.
DATA INPUT PIN (DATA)
Serial data input pin for the serial interface. The last 12 bits
received before the strobe signal’s low to high transition are
latched.
BATTERY VOLTAGE PIN (VBATT)
Power supply input that connects to Ni-MH or Dry cell or
Li-Ion battery.
STROBE PIN (STRB)
Strobe signal input pin for serial interface. It latches the 12
bits of data input to the internal control registers.
VGATE SELECT PINS (VGATESEL1, VGATESEL2)
VGATE output voltage is decided with these two bits input.
VOLTAGE INPUT FOR POWER SWITCH 2 PIN
(VO2_SENSE_IN)
Input of VOUT2 output via power switch. Connect to
VO2_SENSE pin externally.
STEP DOWN FET GATE DRIVE PINS (HG, LG)
Gate drive output pins for external FETs to use DC/DC
converter 2 as Buck / Boost converter.
GATE SWITCH PIN (VGATE_EXT)
Gate drive output pin for external low side switch. It can be
used for power switch turning On/OFF for remote controller
part.
SERIAL CLOCK PIN (SCKIN)
Clock input pin for serial interface. Input data are taken in
to I/F with this clock.
WATCH DOG TIMER PIN (WATCHDOG)
Watch dog timer prevent unstable wake up (flips between
wake-up and failure). If there is no ‘CLEAR’ input after any
WAKEnB input before this WATCHDOG is expired, this
device moves to ‘SLEEP’ mode to prevent wake failure
hanging-up situation.
SEQUENCE SELECT PIN (SEQ_SELECT)
Select judgement Reset channel for wake-up complete
with this input. If this input level is V_STDBY voltage, this
device judges the wake-up completion with Reset2 (DC/
DC2). If it is Ground, judge with Reset1 (DC/DC1). See
18730
Analog Integrated Circuit Device Data
Freescale Semiconductor
15
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