1. DESCRIPTION
S1F76980 Technical Manual (Rev.1.0)
EPSON
1
1. DESCRIPTION
The S1F76980 series is a low consumption current power supply input control IC, which monitors the voltage
of 3-system input power supply and is capable of continuously switching power supply of the system selected in
the priority sequence in the IC. For operations below the operating voltage, the product also guarantees
operations in reduced power mode by setting the output level of the control signal to Hi-Z.
The use of this IC decreases voltage drop, if the Pch power MOS transistor is used as a switch for a
conventional diode circuit, and contributes to the battery life extension. If the result of monitoring the output
voltages shows the voltage higher than that set externally, the voltage limiter circuit operates and provides
measures against overvoltage after output stage.
The package is QFN4-24.
This IC is most suitable for power input control circuit of portable device that is used by switching 3-system
input power.
2. FEATURES
•
Consumption current
: Typ. 20
µ
A (V
CC
=0V, V
BUS
=0V, V
BAT
=2.5V, 25
°
C)
Max. 40
µ
A (V
CC
=0V, V
BUS
=0V, V
BAT
=2.5V, -30
°
C to +85
°
C)
Typ. 0.1
µ
A (V
CC
=0V, V
BUS
=0V, V
BAT
=2.5V, POWER switch OFF, 25
°
C)
•
Operating voltage
: 0 to 6.5V (Absolute maximum rating - 0.3 to 9.0V)
(The output level of control signal is forced to be Hi-Z under the output
guarantee voltage.)
•
Temperature characteristics : Typ. ±100ppm/
°
C
•
Built-in power monitoring circuit (V
CC
, V
BUS
) :
Detecting voltage 2.0 to 6.3V (Aluminum option: 0.1V steps)
Hysteresis width: 0.05 to 1.00V (Aluminum option: 0.05V steps)
Accuracy: Set voltage ±3.0%
•
Built-in power monitoring circuit (V
BAT
):
Detecting voltage 1.6 to 4.3V (Aluminum option: 0.1V steps)
Hysteresis width: 0.1 to 2.1V (Aluminum option: 0.1V steps)
Accuracy: Set voltage ±3.0%
•
Built-in power-on detecting circuit, voltage limiter circuit for preventing output overvoltage, and power
input control logic circuit.
•
Operating temperature
: -30
°
C to +85
°
C
•
Package :
QFN4-24P(4×4×0.85mm)
•
This IC is neither designed for strong radiation activity proof nor light resistance.
3. SERIES PRODUCT NAME LIST
Table 3.1 Series product name list
Power voltage monitoring [V] Typ.
V
CC
V
BUS
V
BAT
Output
guarantee
Voltage
[V]Typ.
Product name
-CDET
+CDET -UDET
+UDET
-BDET
+BDET
VHIZ
Shipment
mode
Remarks
S1F76980F0A000
*
5.000 5.250 3.800 4.000 2.800 3.600
2.250
QFN4-24
-
S1F76980F0B000
*
2.300 2.400 3.800 4.000 1.600 2.000
1.150
QFN4-24
-
S1F76980F0C000
*
2.300 2.400 3.800 4.000 1.600 1.900
1.150
QFN4-24
-
(Note 1) For detecting voltage (-*DET) and release voltage (+*DET), those other than the above table are also
available.
