S1135 Datasheet, PDF (22/48 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT

HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1135 Series
Rev.2.2_00
4. Discharge shunt function (S-1135 Series A / B / E / F type)
The S-1135 Series A / B / E / F type has a built-in discharge shunt circuit to discharge the output capacitance.
When the ON / OFF pin is set to OFF level, turns the output transistor off, and turns the discharge shunt circuit on so
that the output capacitor discharges. These types allow the VOUT pin to reach the V_SS level faster than the S-1135
Series C / D / G / H type that does not have a discharge shunt circuit.
Output transistor : OFF
*1
VIN
S-1135 Series
VOUT
ON / OFF
ON / OFF circuit
ON / OFF pin : OFF
Discharge shunt circuit
: ON
*1
Current flow
VSS
*1. Parasitic diode
Figure 23
Output
capacitor
(C_L)
GND
22
Seiko Instruments Inc.