M5295AFP Ver la hoja de datos (PDF) - Renesas Electronics
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M5295AFP Datasheet PDF : 13 Pages
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M5295AL/AP/AFP
4. VCC detection voltage adjustment
(1) Detection voltage 1 (VTH1) adjustment
6
R1
49.6k
RL
5
+
–
3
R2
20.4k
1.24V
4
VTH1 (V)
13
10
7
5
4.25
4
3.5
R1 (kΩ)
10
10
10
10
—
10.90
8.59
R2 (kΩ)
0.92
1.25
1.96
3.17
—
5
5
Detection voltage calculation formula
VTH1 =
R01 + R02
R02
× 1.24 (V)
R01 = R1 // 49.6kΩ
R02 = R2 // 20.4kΩ
To adjust detection voltage 1, determine external resistance with
the following equations.
(a) VTH1 > 4.25V (R1 = 10kΩ)
R2 =
1
1– 1
R0 20.4k
(R0 =
8.322k × 1.24 )
VTH1 – 1.24
(b) VTH1 < 4.25V (R2 = 5kΩ)
R1 =
1
1– 1
R0 49.6k
(R0 =
(VTH1 – 1.24) 4.016k )
1.24
Figure 6 Detection Voltage 1 (VTH1) Adjustment
(2) Detection voltage 2 (VTH2(L)) adjustment
VTH2(L) (V) R3 (kΩ) R4 (kΩ) ∆VTH2 (mV) Detection voltage calculation formula
6
13
10
10
10
0.93
1.26
16.3
16.3
VTH2(L) =
R03 + R04
R04
× 1.24 (V)
R3
51.2k
7
RL
5
4.6
10
10
—
1.99
3.24
—
16.3
16.3
100
R03 = R3 // 51.2kΩ
R04 = R4 // 18.8kΩ
8
+
–
7
R4
18.8k
4
10.61
5
3.5
8.38
5
17.2
14.1
∆VTH2 =
R03
51.2k
× 100 (mV)
1.24V
To adjust detection voltage 2, determine external resistance with
the following equations.
4
(a) VTH2(L) > 4.6V (R3 = 10kΩ)
R4 =
1
1– 1
R0 18.8k
(R0 =
8.37k × 1.24 )
VTH2(L) – 1.24
(b) VTH2(L) < 4.6V (R4 = 5kΩ)
R3 =
1
1– 1
R0 51.2k
(R0 =
(VTH2(L) – 1.24) 3.95k )
1.24
Figure 7 Detection Voltage 2 (VTH2(L)) Adjustment
REJ03D0780-0200 Rev.2.00 Jun 15, 2007
Page 7 of 12
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