S-1137 Series
www.sii-ic.com
HIGH RIPPLE-REJECTION LOW DROPOUT
SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1
_01
© SII Semiconductor Corporation, 2009-2015
The S-1137 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 soft-start function (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 current capacity of the output transistor.
The ON / OFF circuit ensures longer battery life.
Compared to the conventional CMOS technology regulator ICs, various capacitors including small ceramic capacitors can be
used for this IC.
Furthermore, small SOT-89-5, SOT-23-5, and SNT-6A(H) 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
*2
1.2 V to 3.5 V, selectable in 0.05 V step
1.7 V to 5.5 V
±1.0%
(1.2 V to 1.45 V output product :
±15
mV)
210 mV typ. (2.8 V output product, I
OUT
= 300 mA)
During operation:
45
μA
typ., 65
μA
max.
During power-off:
0.1
μA
typ., 1.0
μA
max.
Possible to output 300 mA (V
IN
≥
V
OUT(S)
+
1.0 V)
*1
A ceramic capacitor of 1.0
μF
or more can be used.
70 dB typ. (f = 1.0 kHz)
Soft-start time : 0.7 ms typ. (C
SS
= 1.0 nF)
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.
*2.
Refer to “
Product Name Structure”
for details.
Applications
•
Constant-voltage power supply for battery-powered device
•
Constant-voltage power supply for cellular phone, portable device
•
Constant-voltage power supply for digital still camera, TV, DVD recorder
Packages
•
SOT-89-5
•
SOT-23-5
•
SNT-6A(H)
1
HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1
_01
S-1137 Series
Block Diagrams
1.
S-1137 Series A type
*1
VIN
Overcurrent
protection circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
Available
Available
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
Reference
voltage circuit
+
−
*1
*1
VSS
*1.
Parasitic diode
Figure 1
2.
S-1137 Series B type
*1
VIN
Overcurrent
protection circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
Available
None
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
Reference
voltage circuit
+
−
*1
*1
VSS
*1.
Parasitic diode
Figure 2
2
HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1
_01
S-1137 Series
3.
S-1137 Series C type
*1
VIN
Overcurrent
protection circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
None
Available
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
Reference
voltage circuit
+
−
*1
VSS
*1.
Parasitic diode
Figure 3
4.
S-1137 Series D type
*1
VIN
Overcurrent
protection circuit
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
None
None
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
Reference
voltage circuit
+
−
*1
VSS
*1.
Parasitic diode
Figure 4
3
HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1
_01
S-1137 Series
Product Name Structure
Users can select the product type, output voltage, and package type for the S-1137 Series. Refer to “1.
Product
name”
regarding the contents of product name, “2.
Function list of product type”
regarding the product type,
“3.
Packages”
regarding the package drawings.
1.
Product name
(1)
SOT-89-5
S-1137
x
xx
-
U5T1
x
Environmental code
U:
Lead-free (Sn 100%), halogen-free
G:
Lead-free (for details, please contact our sales office)
Package abbreviation and IC packing specifications
U5T1: SOT-89-5, Tape
*1
Output voltage
*2
12 to 35
(e.g., when the output voltage is 1.2 V, it is expressed as 12.)
Product type
*3
A to D
*1.
*2.
*3.
(2)
Refer to the tape drawing.
If you request the product which has 0.05 V step, contact our sales office.
Refer to “2.
Function list of product type”.
SOT-23-5
S-1137
x
xx
-
M5T1
x
Environmental code
U:
Lead-free (Sn 100%), halogen-free
S:
Lead-free, halogen-free
Package abbreviation and IC packing specifications
M5T1: SOT-23-5, Tape
*1
Output voltage
*2
12 to 35
(e.g., when the output voltage is 1.2 V, it is expressed as 12.)
Product type
*3
A to D
*1.
*2.
*3.
Refer to the tape drawing.
If you request the product which has 0.05 V step, contact our sales office.
Refer to “2.
Function list of product type”.
4
HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1
_01
S-1137 Series
(3)
SNT-6A(H)
S-1137
x
xx
-
I6T2
U
Environmental code
U:
Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications
I6T2: SNT-6A(H), Tape
*1
Output voltage
*2
12 to 35
(e.g., when the output voltage is 1.2 V, it is expressed as 12.)
Product type
*3
A to D
*1.
*2.
*3.
Refer to the tape drawing.
If you request the product which has 0.05 V step, contact our sales office.
Refer to “2.
Function list of product type”.
2.
Function list of product type
Table 1
Product Type
A
B
C
D
ON / OFF Logic
Active “H”
Active “H”
Active “H”
Active “H”
Discharge Shunt Function
Available
Available
None
None
Pull-down Resistor
Available
None
Available
None
3.
Packages
Package Name
Drawing Code
Package
UP005-A-P-SD
MP005-A-P-SD
PI006-A-P-SD
Tape
UP005-A-C-SD
MP005-A-C-SD
PI006-A-C-SD
Reel
UP005-A-R-SD
MP005-A-R-SD
PI006-A-R-SD
Land
⎯
⎯
PI006-A-L-SD
SOT-89-5
SOT-23-5
SNT-6A(H)
5
