S1F76980 Epson Electronics America, Inc., S1F76980 Datasheet - Page 9

• Manufacturer Part Number: S1F76980
• Description: Power Supply Input Control Ic
• Manufacturer: Epson Electronics America, Inc.

7. PIN DESCRIPTION
7.1 Pin Functions
• Functional pins
• Power Supply Pin
• Test pin
S1F76980 Technical Manual (Rev.1.0)
ONOFSW
PSW
BSEL
FB
CBDLY
CUDLY
CSFT
CDET
UDET
BDET
OC1
OC2
OU1
OU2
OB1
OB2
V
V
V
V
V
V
TM3
IQ
Pin Name
Pin Name
Pin Name
CC
BUS
BAT
OUT
SS
DD
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
No.
No.
No.
Pin
Pin
Pin
15
13
16
20
23
24
21
18
10
12
22
14
19
17
11
1
5
8
3
2
4
6
7
9
V
V
V
3-system select power supply output-side pin.
GND pin.
Pin used to connect the smoothing capacitor in the IC.
Normally fixed to LOW.
Normally fixed to LOW.
Power switching operation select pin. H: ON-ON switching, L: OFF-OFF switching
V
Used to set the priority sequence of V
Feedback input pin.
If measures against overvoltage are taken after output stage, feed back voltage at
an appropriate voltage dividing ratio.
If it is not necessary to take measures against overvoltage, pull down.
Pin used to connect the V
capacitor
Pin used to connect the V
capacitor
Pin used to connect the soft start time setting capacitor
Output pin used to monitor the V
On Nch open drain output L: Input enabled, Hi-Z: Input disabled
Output pin used to monitor the V
On Nch open drain output L: Input enabled, Hi-Z: Input disabled
Output pin used to monitor the V
On Nch open drain output L: Input enabled, Hi-Z: Input disabled
V
To take measures against overvoltage, operate an external MOS transistor as a
regulator.
V
V
To take measures against overvoltage, operate an external MOS transistor as a
regulator.
V
V
To take measures against overvoltage, operate an external MOS transistor as a
regulator.
V
CC
BUS
BAT
BAT
CC
CC
BUS
BUS
BAT
BAT
(adapter) power supply input-side pin.
(adapter) power supply input-side control pin. L: Switch ON, H: Switch OFF
(adapter) power supply output-side control pin. L: Switch ON, H: Switch OFF
(battery) power supply input-side pin.
power supply switch pin H: OFF, L: ON (normally fixed at LOW)
(battery) power supply input-side control pin. L: Switch ON, H: Switch OFF
(battery) power supply output-side control pin. L: Switch ON, H: Switch OFF
(USB) power supply input-side pin.
(USB) power supply input-side control pin. L: Switch ON, H: Switch OFF
(USB) power supply output-side control pin. L: Switch ON, H: Switch OFF
EPSON
BAT
BUS
-system low voltage detection dead time setting
-system low voltage release delay time setting
CC
BUS
BAT
(adapter) power supply input voltage.
(battery) power supply input voltage.
(USB) power supply input voltage.
Function
Function
Function
BUS
and V
BAT
. H:V
7. PIN DESCRIPTION
BUS
, L:V
BAT
5