S-1312 Datasheet PDF - Seiko

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S-1312
Seiko

Part Number S-1312
Description LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Page 30 Pages


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S-1312 Series
www.sii-ic.com
© Seiko Instruments Inc., 2011-2014
LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION
LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.2.3_00
The S-1312 Series, developed by using the CMOS technology, is a positive voltage regulator IC which has low current
consumption, high ripple-rejection and low dropout voltage.
Even with low current consumption of 20 μA typ., it has high ripple-rejection of 75 dB typ., and a ceramic capacitor of 0.22 μF
or more can be used as the input and output capacitors.
It also has high-accuracy output voltage of ±1.0%.
Features
Output voltage:
Input voltage:
Output voltage accuracy:
Dropout voltage:
Current consumption:
Output current:
Input and output capacitors:
Ripple rejection:
Built-in overcurrent protection circuit:
Built-in thermal shutdown 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 3.5 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)
160 mV typ. (2.8 V output product, IOUT = 100 mA)
During operation: 20 μA typ., 30 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 0.22 μF or more can be used.
75 dB typ. (1.2 V output product, f = 1.0 kHz)
70 dB typ. (2.85 V output product, f = 1.0 kHz)
Limits overcurrent of output transistor.
Prevents damage caused by heat.
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 portable communication device, digital camera, and digital audio player
Constant-voltage power supply for battery-powered device
Constant-voltage power supply for home electric appliance
Packages
SOT-23-5
HSNT-4 (1010)
HSNT-4 (0808)
Seiko Instruments Inc.
1



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LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1312 Series
Rev.2.3_00
Block Diagrams
1. S-1312 Series A type
VIN
Overcurrent
protection circuit
Thermal shutdown circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active "H"
Available
Available
ON / OFF
ON / OFF circuit
+
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
2. S-1312 Series B type
VIN
Overcurrent
protection circuit
Thermal shutdown circuit
Figure 1
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active "H"
Available
Unavailable
ON / OFF
ON / OFF circuit
+
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 2
2 Seiko Instruments Inc.



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LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.2.3_00
S-1312 Series
3. S-1312 Series C type
VIN
Overcurrent
protection circuit
Thermal shutdown circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active "H"
Unavailable
Available
ON / OFF
ON / OFF circuit
+
Reference
voltage circuit
VSS
*1. Parasitic diode
4. S-1312 Series D type
VIN
Overcurrent
protection circuit
Thermal shutdown circuit
Figure 3
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active "H"
Unavailable
Unavailable
ON / OFF
ON / OFF circuit
+
Reference
voltage circuit
VSS
*1. Parasitic diode
Figure 4
Seiko Instruments Inc.
3



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LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1312 Series
Rev.2.3_00
Product Name Structure
Users can select the product type, output voltage, and package type for the S-1312 Series. Refer to "1. Product
name" regarding the contents of product name, "2. Function list of product types" regarding the product type,
"3. Packages" regarding the package drawings, "4. Product name lists" regarding details of the product name.
1. Product name
S-1312 x xx - xxxx U 3
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications*1
M5T1: SOT-23-5, Tape
A4T2: HSNT-4 (1010), Tape
A4T1: HSNT-4 (0808), Tape
Output voltage*2
10 to 35
(e.g., when the output voltage is 1.0 V, it is expressed as 10.)
Product type*3
A to D
*1. Refer to the tape drawing.
*2. If you request the product which has 0.05 V step, contact our sales office.
*3. Refer to "2. Function list of product types".
2. Function list of product types
Product Type
A
B
C
D
ON / OFF Logic
Active "H"
Active "H"
Active "H"
Active "H"
Table 1
Discharge Shunt Function
Available
Available
Unavailable
Unavailable
Pull-down Resistor
Available
Unavailable
Available
Unavailable
3. Packages
Package Name
SOT-23-5
HSNT-4 (1010)
HSNT-4 (0808)
Table 2
Dimension
MP005-A-P-SD
PL004-A-P-SD
PK004-A-P-SD
Package Drawing Codes
Tape
Reel
MP005-A-C-SD
MP005-A-R-SD
PL004-A-C-SD
PL004-A-R-SD
PK004-A-C-SD
PK004-A-R-SD
Land
PL004-A-L-SD
PK004-A-L-SD
4 Seiko Instruments Inc.



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