80504 MH IM B8-5420,5474,5645,5736,5828,5901,5952,6029 No.7232-1/9
LB1940T/U
LB1940T/U (3V ),, 2
IC /
/AF USB /FDD/PC
2
VS=1.67.5V VDD=1.96.5V
VS=VDD=1.97.5V
VO(sat)=0.3V at IO=200mA
(Vref=0.9V)
,(LB1940T:TSSOP20;225mil, t=1.2mm max)
(LB1940U:MSOP20; t=0.85mm max)
/Ta=25
unit
VB max
VS1,VS2,VDD
-0.310.5
V
VOUT max
OUT1,OUT2,OUT3,OUT4
-0.310.5
V
OUT1,2,3,4
IO max
400
mA
VIN max
ENA1,ENA2,IN1,IN2,VC
-0.310.5
V
Pd max
800
mW
Topr
-2085
Tstg
-55150
114.3mm76.1mm1.6mm,
/Ta=25
min
typ
max
unit
VOPR1
VDD ,VS=2.0V
1.9
6.5
VOPR2
VS ,VDD=5.0V
1.6
7.5
V
L
VIL
ENA1,ENA2,IN1,IN2
-0.3
1.0
V
H
VIH
ENA1,ENA2,IN1,IN2
2.0
6.0
V
VC
VC
0.19
1.0
V
No. N 7 2 3 2
H
LB1940T/U
No.7232-2/9
/Ta=25,VS=3V,VDD=5V
min
typ
max
unit
ISTB
VS=VDD=6.5V
0.1
1.0
A
[]
VREF
VREF
IOL=01mA
0.85
0.9
0.95
V
SVDD
VSVDD
IOL=10mA
4.70
4.85
V
[H ]
VO(sat)1 VDD=5.0V,VS=2.0V
IO=200mA(PNP )
0.20
0.30
OUT
()
VO(sat)2 VDD=5.0V,VS=2.0V
IO=200mA(NPN )
0.10
0.15
V
IOUT1
VDD=6.0V,VC=0.2V,VS=3.5V
RL=5
(OUT-OUT ),RFB=2
94
100
106
OUT
()
IOUT2
VC=
Rb
Ra
Rb
+
VREF(Ra=70k
,Rb=20k
)
VDD=6.0V,VS=2.0V
RL=5
(OUT-OUT ),RFB=1
180
200
220
mA
VS
IS1
VC=
Rb
Ra
Rb
+
VREF(Ra=70k
,Rb=20k
)
1.5
3
mA
VDD
IDD1
VC=
Rb
Ra
Rb
+
VREF(Ra=70k
,Rb=20k
)
ENA1=2V
4
7
mA
VC
IVC
VDD=6.0V,VS=2.0V,VC=1.9V
0
-1
A
[]
IIH
VIH=5.5V
80
100
IIL
VIL=GND
-1
0
A
Ra,Rb
unit:mm
unit:mm
3246 [LB1940T]
3262 [LB1940U]
LB1940T/U
No.7232-6/9
OUT RFG VC
VC=0.2V, RFB=1
IOUT=200mA(=0.2V/1
)
ENA,INVDD,VS
ex. VIN=5V,VDD=3V,VS=2V
VC 0.19V1.0V
ENA1
ENA2
IN1
IN2
S-GND
SVDD
Vref VC1 VC2 RFG1 RFG2
OUT1
OUT2
VDD
VS2
VS1
OUT3
OUT4
C
P
U
FC1
FC2
RfB
RfB
Ra
Rb
LB1940T
LB1940U
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