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SMB118 датащи(PDF) 8 Page - Summit Microelectronics, Inc.

номер детали SMB118
подробное описание детали  Seven-Channel Programmable DC-DC Power Manager with Battery Charger
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производитель  SUMMIT [Summit Microelectronics, Inc.]
домашняя страница  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

SMB118 датащи(HTML) 8 Page - Summit Microelectronics, Inc.

  SMB118 Datasheet HTML 1Page - Summit Microelectronics, Inc.  
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SMB118/218
Summit Microelectronics, Inc
2107 3.0 10/15/2008
8
PIN DESCRIPTIONS (CONT.)
Pin
Number
Pin Name
Pin
Type
Pin Description
SMB118:
nRESET
Output
SMB118: Reset Output. Releases with programmable delay after all selected
outputs are valid (see UV/OV trip points). Open-drain active low output.
25
SMB218:
VDD_CAP
Power
SMB218: VDD Bypass – Connect to VDD bypass capacitor with 10uF capacitor.
SMB118:
VDD_CAP
Power
SMB118: VDD Bypass – Connect to VDD bypass capacitor with 10uF capacitor.
26
SMB218:
VDDP
Power
SMB218: Power Input for the Boost Converter. Connect to +2.7V to +6.0V
voltage source. Must be at same voltage as source of PFET for the Boost
converter.
27
VBATT
Power
Power Input for Controller. Connect to +2.7V to +6.0V voltage source Bypass
with a 0.1uF ceramic capacitor close to the pin
28
DRVL1
Output
Boost converter 1 low-side drive – Connect to NFET gate
29
FB1
Input
Boost converter 1 feedback pin – Connect to external resistor divider
30
CSH1
Input
Boost converter 1 current sense high – Connect to high side of sense resistor.
This input is used to Kelvin sense the voltage across the current sense resistor.
31
CSL1
Input
Boost converter 1 current sense low – Connect to low side of sense resistor.
This input is used to Kelvin sense the voltage across the current sense resistor.
32
COMP1
Input
Boost converter 1 compensation pin – Connect to R/C compensation network
33
PCHSEQ1
Output
P-Channel MOSFET sequencing pin. Connect to PFET gate for Boost channel
on/off and sequencing. Internally connected to a 100uA current sink to pull PFET
gate resistor from VDD to GND to enable sequencing. Tie to GND when unused.
34
BFETDRV
Output
Battery Charger FET Drive – Connects to gate of a PFET to control battery
charging current
35
BSENSE
Input
Battery Voltage Sense – Connect directly to positive terminal of battery
36
TSENSE
Input
Battery Temperature Sense – Connect to “Temp” terminal of battery pack. This
pin injects a programmable current into the NTC thermistor internal to the battery
pack and measures the resulting current to detect temperatures. Place a 24.9K
resistor, for 10K NTC, from this node to ground.
37
BCSH
Input
Charge Current Sense – Connect to high-side of charge current sense resistor.
This input is used to Kelvin sense the voltage across the current sense resistor.
38
LDOIN2
Power
LDO Power Input – Connect to +2.7V to +6.0V to supply internal LDO
39
LDOOUT2
Input/
Output
LDO Output/Feedback
40
SW4
Input/
Output
Buck converter 4 switch pin – Connect to drains of NFET
41
VIN4
Power
Buck Converter 4 Power – Connect to +2.7V to +6.0V to supply internal PFET
42
DRVL4
Output
Buck converter 4 low-side drive – Connect to NFET gate
43
BCSL
Input
Charge Current Sense resistor. Connect to low side of charge current sense
resistor. Do not attach to battery node at any other point.
44
FB4
Input
Buck converter 4 feedback pin – Connect directly to output
45
COMP4
Input
Buck converter 4 compensation pin – Connect to R/C compensation network
46
SHDN
Input
Shutdown – When high this input disables all functions of the SMB118 for low
power operation. When voltage is present on the DOCK_DC input the part will
exit the shutdown state, regardless of the state of the shutdown input.
47
SDA
Input/
Output
I
2C Data
48
SCL
Input
I
2C Clock
PAD (49)
DRVGND
Ground
Power Ground – Internally connect to under package pad. Connect to isolated
PCB ground plane/flood
PLEASE NOTE: The SMB118 has entered End-of-Life.


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