S-1335 Datasheet PDF - Seiko

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S-1335
Seiko

Part Number S-1335
Description HIGH RIPPLE-REJECTION SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Page 30 Pages


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S-1335 Series
www.sii-ic.com
© Seiko Instruments Inc., 2012-2014
HIGH RIPPLE-REJECTION SOFT-START FUNCTION
CMOS VOLTAGE REGULATOR
Rev.1.3_00
The S-1335 Series, developed by using the CMOS technology, is a positive voltage regulator IC of 150 mA output current,
which has low dropout voltage, high-accuracy output voltage and soft-start function.
The rising time of output voltage immediately after power-on or after the ON / OFF pin is set to ON is adjustable. A 1.0 μF
small ceramic capacitor can be used. It operates with low current consumption of 36 μA typ. Furthermore the overcurrent
protection circuit prevents the load current from exceeding the capacity of output transistor.
SOT-23-5, SC-82AB and super small HSNT-4 (1010) packages realize high-density mounting.
Features
Output voltage:
Input voltage:
Output voltage accuracy:
Dropout voltage:
Current consumption:
Output current:
Input and output capacitors:
Ripple rejection:
Built-in soft-start circuit:
Built-in overcurrent protection circuit:
Built-in ON / OFF circuit:
Pull-down resistor is selectable.
Discharge shunt function is selectable.
Operation temperature range:
Lead-free (Sn 100%), halogen-free
1.0 V to 3.6 V, selectable in 0.05 V step
1.5 V to 5.5 V
±1.0% (1.0 V to 1.45 V output product: ±15 mV)
70 mV typ. (2.8 V output product, IOUT = 100 mA)
During operation: 36 μA typ., 54 μA max.
During power-off: 0.1 μA typ., 1.0 μA max.
Possible to output 150 mA (VIN VOUT(S) + 1.0 V)*1
A ceramic capacitor of 1.0 μF or more can be used.
70 dB typ. (f = 10 kHz, VOUT(S) 2.5 V)
80 dB typ. (f = 1.0 kHz)
The rising time of output voltage immediately after power-on or after the
ON / OFF pin is set to ON is adjustable.
The soft-start time of SOT-23-5 can be switched to tSS0 = 0.1 ms typ. /
tSS1 = 1.0 ms typ. with the SST pin.
The soft-start time of SC-82AB is fixed to tSS0 = 0.1 ms typ.
The soft-start time of HSNT-4 (1010) is fixed to either tSS0 = 0.1 ms typ.
or tSS1 = 1.0 ms typ.
Limits overcurrent of output transistor.
Ensures long battery life.
Ta = 40°C to +85°C
*1. Attention should be paid to the power dissipation of the package when the output current is large.
Applications
Constant-voltage power supply for digital still camera, TV
Constant-voltage power supply for battery-powered device
Constant-voltage power supply for cellular phone
Constant-voltage power supply for portable equipment
Packages
SOT-23-5
SC-82AB
HSNT-4 (1010)
Seiko Instruments Inc.
1



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HIGH RIPPLE-REJECTION SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
S-1335 Series
Rev.1.3_00
Block Diagrams
1. S-1335 Series A / E type
VIN
ON / OFF
*1
Soft-start
circuit
ON / OFF
circuit
Overcurrent
protection
circuit
+
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Soft-start time
(typ.)
Status
Active "H"
Available
Available
A type: 0.1 ms
E type: 1.0 ms
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 1
2. S-1335 Series B / F type
VIN
ON / OFF
*1
Soft-start
circuit
ON / OFF
circuit
Overcurrent
protection
circuit
+
Reference
voltage circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Soft-start time
(typ.)
Status
Active "H"
Available
Unavailable
B type: 0.1 ms
F type: 1.0 ms
*1
VSS
*1. Parasitic diode
Figure 2
2 Seiko Instruments Inc.



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HIGH RIPPLE-REJECTION SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.1.3_00
S-1335 Series
3. S-1335 Series C / G type
VIN
ON / OFF
*1
Soft-start
circuit
ON / OFF
circuit
Overcurrent
protection
circui
+
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Soft-start time
(typ.)
Status
Active "H"
Unavailable
Available
C type: 0.1 ms
G type: 1.0 ms
Reference
voltage circuit
VSS
*1. Parasitic diode
4. S-1335 Series D / H type
Figure 3
VIN
ON / OFF
*1
Soft-start
circuit
ON / OFF
circuit
Overcurrent
protection
circuit
+
Reference
voltage circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Soft-start time
(typ.)
Status
Active "H"
Unavailable
Unavailable
D type: 0.1 ms
H type: 1.0 ms
VSS
*1. Parasitic diode
Figure 4
Seiko Instruments Inc.
3



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HIGH RIPPLE-REJECTION SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
S-1335 Series
Rev.1.3_00
5. S-1335 Series J type
VIN
SST
ON / OFF
*1
Soft-start
circuit
ON / OFF
circuit
Overcurrent
protection
circuit
+
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Soft-start time
(typ.)
Status
Active "H"
Available
Available
0.1 ms / 1.0 ms
(Switchable)
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 5
6. S-1335 Series K type
VIN
SST
ON / OFF
*1
Soft-start
circuit
ON / OFF
circuit
Overcurrent
protection
circuit
+
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Soft-start time
(typ.)
Status
Active "H"
Available
Unavailable
0.1 ms / 1.0 ms
(Switchable)
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 6
4 Seiko Instruments Inc.



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