S-1701A2728-M5T1G SII [Seiko Instruments Inc], S-1701A2728-M5T1G Datasheet - Page 41

• Manufacturer Part Number: S-1701A2728-M5T1G
• Description: HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
• Manufacturer: SII [Seiko Instruments Inc]

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.2.4
3. Shutdown pin (ON/OFF pin) (S-1701 Series A/ B/ C/ D/ E/ F/ G/ H/ J/ K/ L/ M types)
This pin starts and stops the regulator.
When the ON/OFF pin is set to the shutdown level, the operation of all internal circuits stop, and the built-
in P-channel MOS FET output transistor between the VIN pin and VOUT pin is turned off to substantially
reduce the current consumption. At this time, the current consumption equals that consumed by the
detector block, because the internal circuits of the detector are operating. The VOUT pin becomes the
V
pin.
The structure of the ON/OFF pin is as shown in Figure 35 . Since the ON/OFF pin is neither pulled down
nor pulled up internally, do not use it in the floating state. In addition, note that the current consumption
increases if a voltage of 0.3 V to V
used, connect it as follows according to the product type.
A / B / C / D / E / F
A / B / C / D / E / F
G / H / J / K / L / M
G / H / J / K / L / M
ON/OFF
SS
Product Type
• S-1701 Series A / B / C / D / E / F types: Connect to the VIN pin.
• S-1701 Series G / H / J / K / L / M types: Connect to the VSS pin.
_00
level due to the internally divided resistance of several hundred kΩ between the VOUT pin and VSS
Figure 35
VSS
“H”: Shutdown
“H”: Power on
“L”: Shutdown
“L”: Power on
ON/OFF Pin
VIN
IN
− 0.3 V is applied to the ON/OFF pin. When the ON/OFF pin is not
Seiko Instruments Inc.
Internal Circuits
Operating
Operating
Stopped
Stopped
Table 31
VOUT Pin Voltage
Set value
Set value
V
V
SS
SS
level
level
Consumption
S-1701 Series
Current
I
I
I
I
SSD
SSD
SS
SS
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