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S-1135 (Seiko) : Total 30 Pages

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HIGH RIPPLE-REJECTION LOW DROPOUT
MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1135 Series
S-1135 Series, developed using the CMOS technology, is a
positive voltage regulator IC which has the low dropout
voltage, the high-accuracy output voltage and the low current
consumption (300 mA output current).
A 1.0 µF small ceramic capacitor can be used. It operates with
low current consumption of 45 µA typ.
The overcurrent protection circuit prevents the load current
from exceeding the capacitance of output transistor. The
power-off circuit ensures longer battery life.
Various capacitors, also small ceramic capacitors, can be used
for this IC more than for the conventional regulator ICs which
have CMOS technology.
Furthermore a small SOT-89-5, SOT-23-5, and HSNT-6A
packages realize high-density mounting.
„ Features
Output voltage:
1.0 V to 3.5 V, selectable in 0.05 V step.
Low equivalent series resistance capacitor : Ceramic capacitor of 1.0 µF or more can be used as the I/O capacitor.
Wide input voltage range:
1.5 V to 5.5 V
High-accuracy output voltage:
±1.0% (1.0 V to 1.45 V output product : ±15 mV)
Low dropout voltage:
160 mV typ. (products having the output of 2.6 V, IOUT = 300 mA)
Low current consumption:
During operation: 45 µA typ., 65 µA max.
Output current:
During power-off: 0.1 µA typ., 1.0 µA max.
Possible to output 300 mA (at VIN VOUT(S) + 1.0 V)*1
High ripple rejection:
70 dB typ. (at 1.0 kHz, VOUT = 1.0 V)
Built-in overcurrent protection circuit:
limits overcurrent of output transistor
Built-in power-off circuit:
Ensures long battery life.
Discharge shunt circuit can be selected.
Resistor is selectable in pull-up or pull-down
Small package:
SOT-89-5, SOT-23-5, HSNT-6A
Lead-free product
*1. Attention should be paid to the power dissipation of the package when the output current is large.
„ Applications
Power supply for battery-powered devices
Power supply for cellular phones
Power supply for portable equipment
„ Package
Package Name
SOT-89-5
SOT-23-5
HSNT-6A
Package
UP005-A
MP005-A
PJ006-A
Tape
UP005-A
MP005-A
PJ006-A
Drawing Code
Reel
UP005-A
MP005-A
PJ006-A
Land
PJ006-A
Stencil Opening
PJ006-A
Seiko Instruments Inc.
1



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www.DaHtaISGhHeeRt4IUP.PcoLmE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1135 Series
Rev.1.1_00
„ Block Diagrams
1. S-1135 Series A type
VIN
Overcurrent
protection circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-up resistor
Pull-down resistor
Status
Active “H”
Available
None
Available
ON / OFF
Power-off
circuit
+
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 1
2. S-1135 Series B type
VIN
Overcurrent
protection circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-up resistor
Pull-down resistor
Status
Active “H”
Available
None
None
ON / OFF
Power-off
circuit
+
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 2
2 Seiko Instruments Inc.



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www.DataShHeIeGt4HU.cRoImPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.1.1_00
S-1135 Series
3. S-1135 Series C type
VIN
Overcurrent
protection circuit
*1
ON / OFF
Power-off
circuit
+
Reference
voltage circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-up resistor
Pull-down resistor
Status
Active “H”
None
None
Available
VSS
*1. Parasitic diode
Figure 3
4. S-1135 Series D type
VIN
Overcurrent
protection circuit
*1
ON / OFF
Power-off
circuit
+
Reference
voltage circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-up resistor
Pull-down resistor
Status
Active “H”
None
None
None
VSS
*1. Parasitic diode
Figure 4
Seiko Instruments Inc.
3



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www.DaHtaISGhHeeRt4IUP.PcoLmE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1135 Series
Rev.1.1_00
5. S-1135 Series E type
VIN
Overcurrent
protection circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-up resistor
Pull-down resistor
Status
Active “L”
Available
Available
None
ON / OFF
Power-off
circuit
+
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 5
6. S-1135 Series F type
VIN
Overcurrent
protection circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-up resistor
Pull-down resistor
Status
Active “L”
Available
None
None
ON / OFF
Power-off
circuit
+
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 6
4 Seiko Instruments Inc.






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