S-1701 Datasheet, PDF (44/70 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series
Rev.2.4_00
„ Explanation for Each Type
1. S-1701 Series A/ B/ C types
The S-1701 Series A/ B/ C types provide a regulator block standby mode realized by an ON/OFF function
that is active high. The internal circuit of the detector operates in the standby mode, so only the current that
the detector consumes flows.
The SENSE pin is connected to the VIN pin in the internal circuit of the detector block, so the voltage applied
to the VIN pin is monitored and a reset signal is output from the VDOUT pin. The built-in counter timer allows
selection of the release delay time from three settings (A: No delay (60 µs), B: 50 ms, C: 100 ms).
The power supply is shared by the regulator block and detector block and supplied from the VIN pin, so care
must be taken concerning VIN pin input impedance^*1.
2. S-1701 Series D/ E/ F types
The S-1701 Series D/ E/ F types provide a regulator block standby mode realized by an ON/OFF function
that is active high. The internal circuit of the detector operates in the standby mode, so only the current that
the detector consumes flows.
The SENSE pin is connected to the VOUT pin, which is an output of the regulator, in the internal circuit of the
detector block, so the output voltage of the regulator (V_OUT) is monitored and a reset signal is output from the
VDOUT pin^*2. The built-in counter timer allows selection of the release delay time from three settings (D: No
delay (60 µs), E: 50 ms, F: 100 ms).
The power supply is shared by the regulator block and detector block and supplied from the VIN pin, so care
must be taken concerning the VIN pin input impedance^*1.
3. S-1701 Series G/ H/ J types
The S-1701 Series G/ H/ J types provide a regulator block standby mode realized by an ON/OFF function
that is active low. The internal circuit of the detector operates in the standby mode, so only the current that
the detector consumes flows.
The SENSE pin is connected to the VIN pin in the internal circuit of the detector block, so the voltage applied
to the VIN pin is monitored and a reset signal is output from the VDOUT pin. The built-in counter timer allows
selection of the release delay time from three settings (G: No delay (60 µs), H: 50 ms, J: 100 ms).
The power supply is shared by the regulator block and detector block and supplied from the VIN pin, so care
must be taken concerning the VIN pin input impedance^*1.
4. S-1701 Series K/ L/ M types
The S-1701 Series K/ L/ M types provide a regulator block standby mode realized by an ON/OFF function
that is active low. The internal circuit of the detector operates in the standby mode, so only the current that
the detector consumes flows.
The SENSE pin is connected to the VOUT pin, which is an output of the regulator in the internal circuit of the
detector block, so the output voltage of the regulator (V_OUT) is monitored and a reset signal is output from the
VDOUT pin^*2. The built-in counter timer allows selection of the release delay time from three settings (K: No
delay (60 µs), L: 50 ms, M: 100 ms).
The power supply is shared by the regulator block and detector block and supplied from the VIN pin, so care
must be taken concerning the VIN pin input impedance^*1.
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Seiko Instruments Inc.