S-1702 Series
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© Seiko Instruments Inc., 2008-2012
SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH
BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
Rev.2.1
_00
The S-1702 Series, developed based on CMOS technology, is a 150 mA output positive voltage regulator with a low
dropout voltage, a high-accuracy output voltage, and low current consumption.
The S-1702 Series includes a voltage regulator with high-accuracy output voltage of
±1.0%
allowing to use a ceramic
capacitor of 1.0
μF
or more, and a voltage detector that monitors the output/input voltage of the regulator. It also includes
an overcurrent protector that prevents the output current from exceeding the current capacitance of the output transistor
and an output forcible discharge circuit for the regulator operation off.
Small SNT-6A package is available for the S-1702 Series. And an external small capacitor can be used, enabling
high-density mounting. Its super-low current consumption makes the S-1702 Series ideal for mobile devices.
Features
Regulator block
•
Output voltage:
•
High-accuracy output voltage:
•
Super-low current consumption:
•
High peak current capability:
•
Built-in on/off discharge circuit:
•
High ripple rejection:
•
Built-in overcurrent protector:
1.5 V to 5.5 V, selectable in 0.05 V step
±1.0%
Current consumption of regulator block: 9
μA
typ., 16
μA
max.
150 mA output (V
IN
≥
V
OUT(S)
+
1.0 V)
*1
Longer battery life, discharges output load instantaneously
70 dB typ. (1.0 kHz)
Limits overcurrent of output transistor
Detector block
•
Output voltage:
1.3 V to 5.2 V, selectable in 0.05 V step
•
Built-in high-accuracy voltage detector:
±1.0%
Monitoring output/input or monitoring external input by option
(detector output)
•
External reset input:
Forcible assertion of detector output by external reset pin (RESX) input
Overall
•
Correlation temperature gradient in the regulator and the detector blocks
*2
•
Super-low current consumption:
During operation : 10
μA
typ., 18
μA
max.
•
Operation temperature range:
Ta =
−40°C
to
+85°C
*3
•
Lead-free, Sn 100%, halogen-free
*1.
*2.
*3.
Attention should be paid to the power dissipation of the package when the output current is large.
Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins
Refer to “
Product Name Structure”
for details.
Applications
•
Wireless power supply circuit block for cellular phone
•
Power supply circuit block for health care product
•
Power supply circuit block for various mobile devices
Package
•
SNT-6A
Seiko Instruments Inc.
1
SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
Rev.2.1
_00
S-1702 Series
Block Diagrams
1.
S-1702 Series A type to H type
VOUT
Overcurrent
protector
ON/OFF circuit
Reference
voltage circuit
ON / OFF
Product
Type
Detector
Monitor
Voltage
V
OUT
V
OUT
V
OUT
V
OUT
V
IN
V
IN
V
IN
V
IN
Discharge Shunt Function
by ON / OFF and RESX
Pins
Control by
Control by
ON / OFF Pin RESX Pin
×
×
×
×
×
×
×
×
RESX
VIN
Reset circuit
Logic
circuit
VSS
A
B
C
D
E
F
G
H
Reference
voltage
circuit
Voltage
detector
Delay
circuit
Output
circuit
VDOUT
Figure 1
2.
S-1702 Series J type and K type (external input detection type)
VOUT
Overcurrent
protector
ON/OFF circuit
Reference
voltage circuit
ON / OFF
Product
Type
J
K
Detector
Monitor
Voltage
External
input
External
input
Discharge Shunt Function
by ON / OFF Pin
×
SENSE
VIN
Reset circuit
Logic
circuit
VSS
Reference
voltage
circuit
Voltage
detector
Delay
circuit
Output
circuit
VDOUT
Figure 2
2
Seiko Instruments Inc.
SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
Rev.2.1
_00
S-1702 Series
3.
S-1702 Series L type to N type, P type (external delay type)
VOUT
Overcurrent
protector
ON/OFF circuit
Reference
voltage circuit
ON / OFF
Product
Type
L
M
N
P
Detector
Monitor
Voltage
V
OUT
V
OUT
V
IN
V
IN
Discharge Shunt Function
by ON / OFF Pin
×
×
CD
VIN
Reset circuit
Logic
circuit
VSS
Reference
voltage
circuit
Voltage
detector
Delay
circuit
Output
circuit
VDOUT
Figure 3
Seiko Instruments Inc.
3
SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
Rev.2.1
_00
S-1702 Series
Product Name Structure
1.
Product name
S-1702
x
x
x
xx
-
I6T1
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
I6T1: SNT-6A, tape product
*1
Output voltage value of regulator and detection voltage value of detector
00 and 01 (two-digit numeric option code)
Input type of RESX and ON / OFF pins
A to H, J (one-digit alphabetical option code)
Output type of VDOUT pin
*4
A to H, J (one-digit alphabetical option code)
Product type
A to H, J to N, P (one-digit alphabetical option code)
*5
*3
*2
*1.
*2.
*3.
*4.
*5.
Refer to the tape drawing.
Refer to
Table 4
of
“2. Function list according to product type”.
Refer to
Table 3
of
“2. Function list according to product type”.
Refer to
Table 2
of
“2. Function list according to product type”.
Refer to
Table 1
of
“2. Function list according to product type”.
4
Seiko Instruments Inc.
SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
Rev.2.1
_00
S-1702 Series
2.
Function list according to product type
Table 1
Option
Code
A
B
C
D
E
F
G
H
J
K
L
M
N
P
ON / OFF Pin
Application
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
RESX Pin
Application
RESX
RESX
RESX
RESX
RESX
RESX
RESX
RESX
SENSE
SENSE
CD
CD
CD
CD
Product Types
Detector Monitor
Voltage
V
OUT
V
OUT
V
OUT
V
OUT
V
IN
V
IN
V
IN
V
IN
V
SENSE
V
SENSE
V
OUT
V
OUT
V
IN
V
IN
Discharge Shunt Function
Control by
Control by
ON / OFF Pin
RESX Pin
×
×
×
×
×
×
×
×
×
×
×
–
–
–
–
–
–
Delay Type
Internal
Internal
Internal
Internal
Internal
Internal
Internal
Internal
Internal
Internal
External
External
External
External
Table 2
Option
Code
A
B
C
D
E
F
G
H
J
Output Types of VDOUT Pin
Hysteresis
5.0%
5.0%
5.0%
2.5%
2.5%
2.5%
None
None
None
Output Type
Nch open drain output
CMOS output (V
OUT
drive)
CMOS output (V
IN
drive)
Nch open drain output
CMOS output (V
OUT
drive)
CMOS output (V
IN
drive)
Nch open drain output
CMOS output (V
OUT
drive)
CMOS output (V
IN
drive)
Seiko Instruments Inc.
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