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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(guó))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(guò)3線串行接口編程五穩(wěn)壓輸出 |
| 文件頁(yè)數(shù)： | 18/35頁(yè) |
| 文件大?。?/td> | 617K |
| 代理商： | MPC18730EP |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
18
18730
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
capacitor which is connected to V_STDBY. When using
Ni_mh, short-circuit VBATT and LVB to external components
and HVB to GND. When using Li_ion, short-circuit HVB to
VBATT, and leave LVB open. When using Ni_MH, the VB
voltage is output from V_STDBY in Standby mode. When
using Li-Ion, 50% of the VBATT voltage is output to
V_STDBY pin in Standby Mode.
RESET CIRCUIT
Figure 8. Reset Circuit Block Diagram
When the VO1_SENSE or VO2_SENSE voltage is higher
than the reference value, PGOOD1 or 2B goes High. When
PGOOD1(int) is Low and PGOOD1 is High, SLEEP(int) is
forced to place the chip into the standby mode.
Connect a capacitor between RESET1_TH and
PGOOD_DELAY. The capacitor is not necessary if a resistor
of 330K
or less is inserted between RESET1_TH and
VO1_SENSE for reset adjustment
Connect the capacitor between RESET1_TH and PGOOD
as directed below.
When SEQ_SELECT is Low:Between RESET1_TH and
PGOOD1_DELAY
When SEQ_SELECT is High:Between RESET1_TH and
PGOOD2_DELAY
Use a capacitor with approximately half of the capacitance
between PGOOD_DELAY and GND
Table 8. HVB and LVB Connection
MODE
HVB
LVB
Li_ion
VBATT
(27)
open
Ni_mh
GND
VBATT
(27)
Notes
27.
Externally connect to VBATT.
Table 9. V_STDBY and LSWO Operation
INPUT
OUTPUT
WAKE(Int)
PGOOD2(Int)
CLEAR
V_STDBY
LSWO
L
X
X
VBATT
Z
H
L
X
VBATT
Z
H
H
L
VO1_SENSE
Z
H
H
H
VO1_SENSE
L
Z : High Impedance, X : Don’t care
BANDGAP
REFERENCE
(PGOOD1 side only)
PGOOD1, 2
Reset
Control
PGOOD1_DELAY,
PGOOD2_DELAY
RESET1_TH
PGOOD1, 2B(Int)
PGOOD1_DELAY,
PGOOD2_DELAY
VO1_SENSE
VO1_SENSE
VO1_SENSE,
VO2_SENSE
VGATE
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC18730EP | 制造商:Freescale Semiconductor 功能描述:IC POWER MANAG PROG 121MA 64QFN |
| MPC18730EP/R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Power Management IC with Five Power Management IC with Five Power Management IC with Five Power Management IC with Five |
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