LV5696P Datasheet, PDF (11/14 Pages) Sanyo Semicon Device – For Car Audio Systems Multi-Power Supply IC

ILM output voltage setting method
ILM
11
R1
ILM_ADJ
10
1.26V
R2
ILM_ADJ is equal to bandqap reference
voltage (typ = 1.26V).
LV5696P
ILM calculating formula
ILM
=
1.26[V
R₂
]
×
R₁
+ 1.26[V ]
R_{1 =} (ILM −1.26)
R₂
1.26
Please design so that the ratio of R1 and R2 may fill the
above-mentioned expression for the set ILM voltage.
(Ex.) Setup to ILM = 8.0V
R_{1 =} (8.0 − 1.26) _{≅ 5.349}
R₂
1.26
R_{1 =} 300kΩ _{≅ 5.357}
R₂ 56kΩ
ILM = 1.26V × 5.357 + 1.26V ≅ 8.010V
Note : The above-mentioned are all the values at the typical. The error margin of output voltage is caused by the influence
of the manufacturing variations of IC and external resistance.
CTRL3 Application Circuit
R1
A
R2
B
CTRL3
8
400kΩ
Input 3.3V : R1 = R2 = 47kΩ
A
B
CTRL3
0V
0V
0V
0V
3.3V
1.56V
3.3V
0V
1.56V
3.3V
3.3V
3.12V
No.A2159-11/14