HA16114P Datasheet, PDF (9/38 Pages) Hitachi Semiconductor – Switching Regulator for Chopper Type DC/DC Converter

HA16114P/PJ/FP/FPJ, HA16120FP/FPJ
2. DC/DC Output Voltage Setting and Error Amplifier Usage
2.1 DC/DC Output Voltage Setting
(1) Positive Output Voltage (V_O > Vref)
HA16114 with step-down topology
HA16120 with step-down (boost) topology
V_IN
C_L
IN(−)
IN(+)
EA
−
+
GND
OUT
Vref
V_O
+
−
V_IN
C_L
IN(−)
IN(+)
EA
−
+
GND
OUT
Vref
V_O
+
−
R₂ R₁
V_O = Vref ×
R₁ + R₂
R₂
R₂ R₁
Figure 2.1 Output Voltage Setting (1)
(2) Negative Output Voltage (V_O < 0 V)
HA16114 with inverting topology
V_IN
C_L
IN(−)
IN(+)
EA
−
+
OUT
Vref
−
R₃
+
R₄
R₂
R₁
V_O = −Vref ×
R₁ + R_{2 ×}
R_{3 − 1}
R₂
R₃ + R₄
Figure 2.2 Output Voltage Setting (2)
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