KSI-2024-002 1
S71xxLSF
Bipolar Linear Integrated Circuit
7
Description
• Micro computer circuits in mobile phones, word processors, TVs, VCRs etc
• General logic circuits
• Detection of voltage drop in batteries of note personal computers, mobile phones
• Switching to backup power supply
Features
• Super Low Current Consumption (ICCL=100 ㎂ Typ. ICCH=1 ㎂ Typ.)
• It has on delay function to supplement the constant of outer C and R
• Low operation voltage • High current of output transistor
• Hysteresis circuit built in • Low operation voltage
Ordering Information
Type NO. Marking Package Code
S71xxLSF L□□ SOT-23F
□□: Detecting Voltage Code
Outline Dimensions unit : mm
S
Se
em
mi
ic
co
on
nd
du
uc
ct
to
or
r
PIN Connections
1. OUT
2. Vcc
3. GND
0.4±0.05
0~0.1
3
1
2
1.90 BSC
2.9±0.1
0.15±0.05
2.4±0.1
0.9±0.1
1.6±0.1
3. GND
2. Vcc
1. OUT
Equivalent Circuit
KSI-2024-002 2
S7
1
xx
L
SF
Absolute maximum ratings (Ta=25°C)
Characteristic Symbol Ratings Unit
Supply voltage VCC -0.3 ~ +10 V
Power Dissipation (Package Limitation)
PD* 300 ㎽
Operating Temperature Topr -20 ~ +75 ℃
Storage Temperature Tstg -40 ~ +125 ℃
* With PCB(8×8㎜ Copper Area) at Glass Epoxy Board (t=1.7 ㎜, Area; 20×20㎜)
Electrical Characteristics (Ta=25°C)
Characteristic Symbol
Test
Circuit
Test Condition Min.
Typ.
Max.
Unit
S7145LSF
4.30
4.5 4.70
S7142LSF
4.00
4.2 4.40
S7139LSF
3.70
3.9 4.10
S7136LSF
3.40
3.6 3.80
S7133LSF
3.10
3.3 3.50
S7131LSF
2.90
3.1 3.30
S7129LSF
2.75
2.9 3.05
S7127LSF
2.55
2.7 2.85
S7125LSF
2.35
2.5 2.65
Detecting voltage VS 1
RL=470Ω
VCC=H→L
VOL≤0.4V
S7123LSF
2.15
2.3 2.45
V
Hysteresis Voltage ΔVS 1 RL=470Ω,VCC=L→H→L 30 100 300 ㎷
Temperature Coefficient
Of detecting voltage VS/ΔT 1 RL=470Ω, Ta=-20~75℃ - ±0.01
- %/℃
Low Level Output voltage VOL 1 RL=470Ω, VCC= VSMin - 0.1 0.4 V
Circuit current at ON ICCL 1 RL=∞, VCC= VSMin - 300 500 µA
Circuit current at OFF ICCH 1 RL=∞, VCC= VSMax +0.1V
- 30 50 µA
Threshold Operating Voltage Vopr 1 RL=4.7 ㏀, VOL≤0.4V - 1.4 1.6 V
Output Current at ON I IOLI 1 RL=0, VCC= VSMin 10 20 - ㎃
Output Current at ON II IOLII 1 RL=0, VCC= VSMin ,
Ta= -20~75℃ 5 - - ㎃
L→H Transmission delay time
tPLH 2 RL=4.7 ㏀, CL=100 ㎊ - 100 - ㎲
H→L Transmission delay time
tPHL 2 RL=4.7 ㏀, CL=100 ㎊ - 10 - ㎲
Test Circuit 1 Test Circuit 2
S71xxLSF S71xxLSF
KSI-2024-002 3
S7
1
xx
L
SF
Electrical Characteristic Curves
Fig. 1 V
O
– V
CC
Fig. 3 I
CC
–
V
CC
Fig. 2 V
S
– T
a
Fig. 5
△
V
S
–
T
a
Fig. 4 V
OL
– T
a
Fig. 6 I
CCH
– T
a
KSI-2024-002 4
S7
1
xx
L
SF
Fig. 7 I
OL
–
T
a
Fig. 9 I
CCL
–
T
a
Fig. 8 C
L
– t
PLH
