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參數(shù)資料
| 型號(hào)： | MPC18730EP |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Power Management IC with Five Regulated Outputs Programmed Through 3 Wire Serial Interface |
| 中文描述： | 與電源管理IC，通過3線串行接口編程五穩(wěn)壓輸出 |
| 文件頁數(shù)： | 15/35頁 |
| 文件大小： | 617K |
| 代理商： | MPC18730EP |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
15
18730
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.
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.
BATTERY VOLTAGE PIN (VBATT)
Power supply input that connects to Ni-MH or Dry cell or
Li-Ion battery.
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.
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.
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.
STROBE PIN (STRB)
Strobe signal input pin for serial interface. It latches the 12
bits of data input to the internal control registers.
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
Table 7, on page 13
.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MPC18730EP | 制造商:Freescale Semiconductor 功能描述:IC POWER MANAG PROG 121MA 64QFN |
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