SCI7710YFA [SEIKO]
Fixed Positive Standard Regulator, 2.2VCMOS, PSSO3, PLASTIC, SOT-89, 3 PIN;
| 型号： | SCI7710YFA |
| 厂家： | 
SEIKO EPSON CORPORATION |
| 描述： | Fixed Positive Standard Regulator, 2.2VCMOS, PSSO3, PLASTIC, SOT-89, 3 PIN 输出元件 调节器 |
| 文件： | 总20页 (文件大小：249K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATA SHEET
GRAPHICS
SCI7710/11YSeries
September 1993
DC/DC REGULATORS
The SCI7710Y family of CMOS voltage regulators comprises two series – the SCI7710Y series for
positive input voltages and the SCI7711Y series for negative input voltages.
■ DESCRIPTION
SCI7710Y series voltage regulators provide step-down and stabilization of an input voltage to a
specified fixed voltage. The nine devices in the series incorporate a precision, power-saving
reference voltage generator, a transistorized differential amplifier and resistors for determining the
output voltage. The SCI7710Y series is available in 3-pin plastic SOT89s.
■ APPLICATIONS
Fixed-voltage power supplies for battery-operated equipment such as portable video cassette
•
recorders, video cameras and radios
Fixed-voltage power supplies for communications equipment
•
High-stability reference voltage generators
•
■ FEATURES
1.5 µA (typ) current consumption (SCI7710YHA)
–1.8 mV/deg. C (typ) temperature gradient (SCI7710YDA)
Wide range of operating voltages
0.5 %/V (typ) input stability (SCI7710YDA)
On-chip reference voltage generator
On-chip differential amplifier
•
•
•
•
•
•
3-pin plastic SOT89
•
■ SCI7710Y Series/SCI7711Y Series
Current
consumption
(µA)
Operating
temperature
(deg. C)
Voltage (V)
Output current
(mA)
Device
Input
Output
SCI7710YHA
SCI7710YGA
SCI7710YFA
SCI7710YLA
SCI7710YDA
SCI7710YCA
SCI7710YKA
SCI7710YMA
SCI7710YBA
1.5
1.8
2.2
2.6
3.0
3.2
3.9
4.5
5.0
10 at VI = 3V
10 at VI = 3V
10 at VI = 3V
30 at VI = 4V
30 at VI = 5V
30 at VI = 5V
40 at VI = 6V
50 at VI = 6V
50 at VI = 7V
1.5
1.6
1.8
2.0
2.0
2.0
2.2
2.4
2.4
15 (max)
–30 to 85
390-1.0
1
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ BLOCK DIAGRAM
■ PIN CONFIGURATION
VO
1
VI
GND
2
+
–
VI
3
VREF
VO
GND
■ PIN DESCRIPTION
Number
Name
GND
VI
Description
1
2
3
Ground
Input voltage
VO
Output voltage
■ ABSOLUTE MAXIMUM RATINGS
Parameter
Input voltage
Symbol
Ratings
21
Unit
V
VI
IO
Output current
100
mA
V
Output voltage range
Power dissipation (Ta ≤ 25°C)
Operating temperature
Storage temperature
VO
VI + 0.3 to GND – 0.3
400
PD
mW
°C
°C
—
TOPR
TSTG
TSOL
–20 to 70
–65 to 150
Soldering temperature & time
260°C, 10s (at lead)
Note: Temperatures during reflow soldering must remain within the limits set out in LSI Device
Precautions. Never use solder dip to mount SCI7000 series power supply devices.
390-1.0
2
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ ELECTRICAL CHARACTERISTICS
SCI7710YHA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
V
Min
—
Typ
—
Max
15.0
1.60
1.65
Input voltage
VI
VI = 3.0V, IO = 1mA, Ta = 25°C
1.40
1.35
1.50
—
Output voltage
V
O
V
VI = 3.0V to 10.0V, IO = 1mA
Input/output voltage
differential
VI – VO
VI = 1.5V, IO = 1mA
—
55.0
120
mV
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 3.0V to 10.0V, IO = 1 to 10mA,
Isothermal
—
0.10
—
% / V
Operating current
IDDO
VI = 1.8V to 15.0V, Ta = 25°C
—
—
1.50
–1.0
4.0
—
µA
Temperature gradient
Kt
mV/°C
VI = 3.0V, IO = 1 to 10mA,
Ta = 25°C
Output voltage drift
∆VO
—
10.0
—
mV
SCI7710YGA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
V
Min
—
Typ
—
Max
15.0
1.90
2.0
Input voltage
VI
VI = 3.0V, IO = 1mA, Ta = 25°C
1.70
1.60
1.80
—
Output voltage
V
V
O
VI = 3.0V to 10.0V, IO = 1mA
Input/output voltage
differential
VI – VO
VI = 1.8V, IO = 1mA
—
50.0
100
mV
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 3.0V to 10.0V, IO = 1 to 10mA,
Isothermal
—
0.10
—
% / V
Operating current
IDDO
Kt
VI = 1.8V to 15.0V, Ta = 25°C
—
—
1.60
4.10
—
µA
Temperature gradient
–1.10
mV/°C
VI = 3.0V, IO = 1 to 10mA,
Ta = 25°C
Output voltage drift
∆VO
—
10.0
—
mV
390-1.0
3
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ ELECTRICAL CHARACTERISTICS (Cont.)
SCI7710YFA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
V
Min
—
Typ
—
Max
15.0
2.30
2.40
Input voltage
VI
VI = 3.0V, IO = 10mA, Ta = 25°C
2.10
2.0
2.20
—
Output voltage
V
V
O
VI = 3.0V to 10.0V, IO = 10mA
Input/output voltage
differential
VI – VO
VI = 2.2V, IO = 1mA
m
—
40.0
80.0
V
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 3.0V to 10.0V, IO = 1 to 10mA,
Isothermal
—
0.10
—
% / V
Operating current
IDDO
VI = 2.2V to 15.0V, Ta = 25°C
—
—
1.80
4.30
—
µA
Temperature gradient
Kt
–1.30
mV/°C
VI = 3.0V, IO = 1 to 10mA,
Ta = 25°C
Output voltage drift
∆VO
—
25.0
—
mV
SCI7710YLA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
V
Min
—
Typ
—
Max
15.0
2.75
2.90
Input voltage
VI
VI = 5.0V, IO = 10mA, Ta = 25°C
2.45
2.30
2.60
—
Output voltage
V
O
V
VI = 5.0V to 15.0V, IO = 10mA
Input/output voltage
differential
VI – VO
VI = 2.45V, IO = 10mA
—
0.4
0.8
V
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 5.0V to 15.0V, IO = 1 to 10mA,
Isothermal
—
0.20
—
% / V
Operating current
IDDO
Kt
VI = 3.0V to 15.0V, Ta = 25°C
—
—
2.0
4.5
—
µA
Temperature gradient
IO = 1 to 30mA
–1.6
mV/°C
VI = 5.0V, IO = 1 to 30mA,
Ta = 25°C
Output voltage drift
∆VO
—
30.0
—
mV
390-1.0
4
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ ELECTRICAL CHARACTERISTICS (Cont.)
SCI7710YDA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
Min
—
Typ
—
Max
15.0
3.15
3.30
3.30
0.50
1.70
Input voltage
VI
V
VI = 5.0V, IO = 10mA, Ta = 25°C
VI = 4.0V to 15.0V, IO = 10mA
VI = 5.0V to 15.0V, IO = 30mA
VI = 3.0V, IO = 10mA
2.85
2.70
2.70
—
3.0
—
Output voltage
VO
V
—
Input/output voltage
differential
0.35
1.20
VI – VO
V
VI = 3.0V, IO = 30mA
—
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 4.0V to 15.0V, IO = 1 to 10mA,
Isothermal
—
0.15
—
% / V
Operating current
IDDO
Kt
VI = 3.0V to 15.0V, Ta = 25°C
—
—
—
2.0
4.5
—
µA
mV/°C
mV
Temperature gradient
Output voltage drift
–1.8
30.0
∆VO
VI = 5.0V, IO = 1 to 30mA
—
SCI7710YCA
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
•
Rating
Parameter
Symbol
Conditions
Unit
V
Min
—
Typ
—
Max
15.0
3.35
3.50
0.47
1.60
Input voltage
VI
VI = 5.0V, IO = 10mA, Ta = 25°C
VI = 4.0V to 15.0V, IO = 10mA
VI = 3.2V, IO = 10mA
3.05
2.90
—
3.20
—
Output voltage
V
V
O
Input/output voltage
differential
0.32
1.10
VI – VO
V
VI = 3.2V, IO = 30mA
—
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 4.0V to 10.0V, IO = 1 to 10mA,
Isothermal
—
0.10
—
% / V
Operating current
IDDO
Kt
VI = 3.2V to 15.0V, Ta = 25°C
—
—
2.0
4.50
—
µA
Temperature gradient
–1.90
mV/°C
VI = 5.0V, IO = 1 to 30mA,
Ta = 25°C
Output voltage drift
∆VO
—
30.0
—
mV
390-1.0
5
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ ELECTRICAL CHARACTERISTICS (Cont.)
SCI7710YKA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
Min
—
Typ
—
Max
15.0
4.01
Input voltage
VI
V
V
Output voltage
VO
VI = 6.0V, IO = 5mA, Ta = 25°C
3.79
3.90
Input/output voltage
differential
VI – VO
VI = 3.9V, IO = 5mA
—
0.15
0.30
V
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 5.0V to 10.0V, IO = 1 to 10mA,
Isothermal
—
0.20
—
% / V
Operating current
IDDO
Kt
VI = 5.0V to 15.0V, Ta = 25°C
—
—
2.20
4.6
—
µA
Temperature gradient
–2.30
mV/°C
VI = 6.0V, IO = 0.1 to 5mA,
Ta = 25°C
Output voltage drift
∆VO
—
10.0
—
mV
SCI7710YMA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
V
Min
—
Typ
—
Max
15.0
4.60
4.70
Input voltage
VI
VI = 6.0V, IO = 10mA, Ta = 25°C
4.4
4.50
—
Output voltage
V
V
O
VI = 6.0V to 15.0V, IO = 10mA
4.30
Input/output voltage
differential
VI – VO
VI = 4.3V, IO = 10mA
—
0.25
0.40
V
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 6.0V to 15.0V, IO = 1 to 10mA,
Isothermal
—
0.2
—
% / V
Operating current
IDDO
Kt
VI = 5.0V to 15.0V, Ta = 25°C
—
—
2.4
4.8
—
µA
Temperature gradient
–2.7
mV/°C
VI = 6.0V, IO = 0.1 to 30mA,
Ta = 25°C
Output voltage drift
∆VO
—
30.0
—
mV
390-1.0
6
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ ELECTRICAL CHARACTERISTICS (Cont.)
SCI7710YBA
•
VSS = 0V, Ta = –20 to 70°C, unless otherwise noted
Rating
Parameter
Symbol
Conditions
Unit
Min
—
Typ
—
Max
15.0
5.25
5.50
5.50
0.35
1.70
Input voltage
VI
V
VI = 7.0V, IO = 10mA, Ta = 25°C
VI = 6.0V to 15.0V, IO = 10mA
VI = 7.2V to 15.0V, IO = 50mA
VI = 5.0V, IO = 10mA
4.75
4.50
4.50
—
5.00
—
Output voltage
VO
V
—
Input/output voltage
differential
0.25
1.35
VI – VO
V
VI = 5.0V, IO = 30mA
—
Input voltage
stabilization ratio
∆VO
∆VI•VO
VI = 6.0V to 15.0V, IO = 1 to 10mA,
Isothermal
—
0.18
—
% / V
Operating current
IDDO
Kt
VI = 5.0V to 15.0V, Ta = 25°C
—
—
2.40
–3.0
4.80
—
µA
Temperature gradient
mV/°C
VI = 7.0V, IO = 1 to 50mA,
Ta = 25°C
Output voltage drift
∆VO
—
50.0
—
mV
390-1.0
7
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS
SCI7710YHA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
2.0
0.10
Ta = 25°C
VI = 1.5V
1.8
IO = 1mA
1.6
IO = 1mA
0.05
1.4
IO = 30mA
1.2
IO = 10mA
1.0
0.00
0
5.0
10.0
15.0
–20 –10
0
10 20 30 40 50 60 70
Input Voltage (V)
Ambient Temperature (°C)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
VI = 3V
Ta = 25°C
2.0
2.0
1.0
1.0
–20 –10
0
10 20 30 40 50 60 70
0
5.0
10.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
2.0
50
VI = 3V
VI = 3V
IO = 1mA
1mA ≥ IO ≥ 10mA
40
30
20
10
0
1.5
1.0
–20 –10
0
10 20 30 40 50 60 70
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
Ambient Temperature (°C)
390-1.0
8
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YGA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
2.0
0.10
Ta = 25°C
VI = 1.8V
1.9
IO = 1mA
1.8
1.7
1.6
1.5
1.4
1.3
IO = 1mA
0.05
IO = 10mA
1.2
1.1
1.0
0.00
0
5.0
10.0
15.0
–20 –10
0
10 20 30 40 50 60 70
Input Voltage (V)
Ambient Temperature (°C)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
Ta = 25°C
VI = 3V
2.0
1.0
2.0
1.0
0
5.0
10.0
15.0
–20 –10
0
10 20 30 40 50 60 70
Input Voltage (V)
Ambient Temperature (°C)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
2.0
50
VI = 3V
VI = 3V
IO = 1mA
1mA ≥ IO ≥ 10mA
40
30
20
10
0
1.5
1.0
–20 –10
0
10 20 30 40 50 60 70
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
Ambient Temperature (°C)
390-1.0
9
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YFA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
0.10
Ta = 25°C
VI = 2.2V
5.0
4.0
3.0
0.05
IO = 1mA
IO = 10mA
2.0
IO = 20mA
1.0
0.00
–20 –10
0
5.0
10.0
15.0
0
10 20 30 40 50 60 70
Input Voltage (V)
Ambient Temperature (°C)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
VI = 3V
Ta = 25°C
2.0
2.0
1.0
1.0
–20 –10
0
10 20 30 40 50 60 70
0
5.0
10.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
2.5
50
VI = 3V
VI = 3V
1mA ≥ IO ≥ 10mA
IO = 10mA
40
30
20
10
0
2.0
1.5
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
390-1.0
10
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YLA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
2.0
VI = 2.3V
5.0
4.0
IO = 20mA
1.0
3.0
IO = 10mA
2.0
IO = 10mA
IO = 30mA
1.0
IO = 20mA
0
–20
0
20
40
60
80
100 120
0
3.0
6.0
9.0
12.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
VI = 5V
2.0
1.0
2.0
1.0
0
3.0
6.0
9.0
12.0
15.0
–20
0
20
40
60
80
100 120
Input Voltage (V)
Ambient Temperature (°C)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
70
3.0
VI = 5V
VI = 5V
1mA ≤ IO ≤ 30mA
IO = 10mA
60
50
40
30
20
2.5
2.0
-30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120
-20
0
20
40
60
80
100 120
Ambient Temperature (°C)
Ambient Temperature (°C)
390-1.0
11
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YDA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
2.0
Ta = 25°C
VI = 3V
5.0
4.0
IO = 30mA
IO = 10mA
3.0
1.0
IO = 30mA
2.0
IO = 10mA
1.0
0
–20 –10
0
5.0
10.0
15.0
0
10 20 30 40 50 60 70
Input Voltage (V)
Ambient Temperature (°C)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
VI = 5V
Ta = 25°C
2.0
2.0
1.0
1.0
–20 –10
0
10 20 30 40 50 60 70
0
5.0
10.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
3.5
60
VI = 5V
VI = 5V
IO = 10mA
1mA ≤ IO ≤ 30mA
50
40
30
20
10
3.0
2.5
–20 –10
0
10 20 30 40 50 60 70
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
Ambient Temperature (°C)
390-1.0
12
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YCA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
2.0
VI = 3V
Ta = 25°C
5.0
4.0
IO = 30mA
IO = 10mA
3.0
1.0
IO = 30mA
2.0
IO = 10mA
1.0
0
–20 –10
0
10 20 30 40 50 60 70
0
5.0
10.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
Ta = 25°C
VI = 5V
2.0
1.0
2.0
1.0
0
5.0
10.0
15.0
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
Input Voltage (V)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
3.5
60
VI = 5V
VI = 5V
IO = 10mA
1mA ≤ IO ≤ 30mA
50
40
30
20
10
3.0
2.5
–20 –10
0
10 20 30 40 50 60 70
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
Ambient Temperature (°C)
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SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YMA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
2.0
5.0
VI = 4.3V
IO = 50mA
IO = 10mA
1.0
2.5
IO = 30mA
IO = 50mA
IO = 10mA
IO = 30mA
0
0
–20
0
20
40
60
80
100 120
0
3.0
6.0
9.0
12.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
VI = 6V
2.0
1.0
2.0
1.0
–20
0
20
40
60
80
100 120
0
3.0
6.0
9.0
12.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
5.0
70
VI = 6V
1mA ≤ IO ≤ 30mA
VI = 5V
IO = 10mA
60
50
40
30
20
4.5
4.0
-20
0
20
40
60
80
100 120
-20
0
20
40
60
80 100 120
Ambient Temperature (°C)
Ambient Temperature (°C)
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SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YKA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
0.5
Ta = 25°C
VI = 3.9V
5.0
0.4
0.3
4.0
IO = 5mA
3.0
IO = 10mA
0.2
IO = 5mA
2.0
1.0
0.1
0.0
0
5.0
10.0
15.0
–20 –10
0
10 20 30 40 50 60 70
Input Voltage (V)
Ambient Temperature (°C)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
VI = 5V
Ta = 25°C
2.0
2.0
1.0
1.0
–20 –10
0
10 20 30 40 50 60 70
0
5.0
10.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
50
4.5
VI = 6V
VI = 6V
0.1mA ≥ IO ≥ 5mA
IO = 5mA
40
30
20
10
0
4.0
3.5
–20 –10
–20 –10
0
10 20 30 40 50 60 70
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
Ambient Temperature (°C)
390-1.0
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S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
SCI7710YBA
•
Input/output voltage differential vs.
ambient temperature
Output voltage vs. input voltage
2.0
VI = 5V
Ta = 25°C
5.0
IO = 50mA
4.0
IO = 10mA
1.0
3.0
IO = 50mA
2.0
1.0
IO = 10mA
0
–20 –10
0
10 20 30 40 50 60 70
0
5.0
10.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Operatingcurrentvs.ambienttemperature
Operating current vs Input voltage
3.0
3.0
VI = 7V
Ta = 25°C
2.0
2.0
1.0
1.0
–20 –10
0
10 20 30 40 50 60 70
0
5.0
10.0
15.0
Ambient Temperature (°C)
Input Voltage (V)
Output voltage vs. ambient temperature
Output voltage drift vs. ambient temperature
5.5
70
VI = 7V
VI = 7V
IO = 10mA
1mA ≤ IO ≤ 50mA
60
50
40
30
20
5.0
4.5
–20 –10
0
10 20 30 40 50 60 70
–20 –10
0
10 20 30 40 50 60 70
Ambient Temperature (°C)
Ambient Temperature (°C)
390-1.0
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S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
■ PACKAGE MARKING
The markings on SCI7710Y/11Y series device
packages use the following abbreviations.
Parameter
Code
H
Description
1.5V
G
F
1.8V
2.2V
L
2.6V
Output voltage code
D
3.0V
C
3.2V
K
3.9V
M
B
4.5V
5.0V
Voltage regulator
code
P
Positive
Negative
N
■ MARKING LOCATIONS
Output voltage code
Voltage regulator code
390-1.0
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SCI7710/11Y Series
September 1993
■ FUNCTIONAL DESCRIPTION
Differential Amplifier
Basic Operation
•
•
Thebuilt-indifferentialamplifiergenerates
a potential at point X that adjusts the gate
bias of the output transistor if there is any
difference between VREF and VREG.
The SCI7710Y series uses a 3-pin series
regulator feedback loop. An operational
amplifier compares VREG from the voltage
divider formed by R1 and R2, with VREF. The
amplifier output adjusts the output transistor
gate bias to equalize the voltages and com-
pensate for fluctuations in V1.
VI
P1 P2
VI
VO
R2
To Output
Transistor
X
VREG
+
–
VREF
N1
N2
VREG
R1
VREF
GND
The following equation shows the relationship
between VO and VREF.
Output transistor
•
The output side of the p-channel MOS
transistors in the output transistor circuit is
connected to the voltage divider resistors
in the feedback loop.
R1 + R2
V =
O
V
REF
R1
Internal Circuits-Reference voltage generator
•
The offset structure, used in all three transis-
tors, results in a high breakdown voltage that
ensures a stable reference voltage output
over a wide range of input voltages.
VI
–
+
VO
VI
R2
Depletion
Mode
VREG
VREF
R1
Depletion
Mode
VREF
Enhancement
Mode
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S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
This configuration, however, introduces two de-
sign problems.
■ TYPICAL APPLICATIONS
Current Booster
•
1. It reduces the output voltage by VF, the
forward voltage drop across the diode.
At the cost of a small increase in current
consumption, the voltage is regulated while
maintaining high current output.
2. It is sensitive to fluctuations in VF due to
differences in diodes, operating tempera-
tures and ISS.
VI
VO
R1 helps reduce the effect of ISS on VF. It is also
required when ISS is lower than the diode bias
current. For certain input voltages, a Zener diode
with a reverse polarity can be used.
VI
VO
SCI7710Y
GND
Higher Input Voltages
VSS
•
A preliminary regulator circuit is required to
bringtheinputvoltagewithintheSCI7710Y
series rated range.
External Voltage Converter
•
Thefollowingcircuitraisestheoutputvoltage
of a SCI7710Y series IC.
VI
VO
VI
VO
SCI7710Y
GND
VI
VO
Vr
VI
VO
SCI7710Y
GND
R2
IB
R1
Iopr
The following equation shows the relationship
between the old and new voltages.
Switching output
•
R1 + R2
SCI7710Yseriesdevicesaredesignedfor
continuous operation. An external switch-
ingcircuitallowstheregulatedoutputtobe
switched ON and OFF.
V =
O
V
R
R2
Notethattheapplicationmustsupplyabiascurrent,IB,high
enough to offset the increase in voltage across R1 due to
Iopr. An alternative circuit for raising the output voltage is
shown in the following figure.
VI
VO
VI
VO
SCI7710Y
GND
VI
VO
VI
VO
R1
SCI7710Y
GND
ISS
C1
C2
ON/OFF
Control Signal
390-1.0
19
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
SCI7710/11Y Series
September 1993
North East and North Central
South East and South Central
S-MOS Systems, Inc.
More info…
West Coast
World Wide Web:
http://www.smos.com/
S-MOS Systems, Inc.
150 River Oaks Parkway
San Jose, CA 95134
Tel. (408) 922-0200
Fax (408) 922-0238
S-MOS Systems, Inc.
301 Edgewater Place, Suite 120
Wakefield, MA 01880
Tel. (617) 246-3600
4300 Six Forks Road, Suite 430
Raleigh, NC 27609
Tel. (919) 781-7667
Fax (617) 246-5443
Fax (919) 781-6778
S-MOS assumes no responsibility or liability for (1) any errors or inaccuracies contained in the information herein and (2) the use of the information or a portion thereof in any application,
including any claim for (a) copyright or patent infringement or (b) direct, indirect, special or consequential damages. There are no warranties extended or granted by this document. The
information herein is subject to change without notice from S-MOS.
September 1993
© Copyright 1996 S-MOS Systems, Inc.
Printed in U.S.A.
390-1.0
390-1.0
20
S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: (408) 922-0200 • Fax: (408) 922-0238
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