HA16114 View Datasheet(PDF) - Renesas Electronics
Part Name
Description
Manufacturer
HA16114 Datasheet PDF : 34 Pages
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HA16116FP/FPJ, HA16121FP/FPJ
2. DC/DC Converter Output Voltage Setting and Error Amp Usage
2.1 Positive Voltage Booster (VO > VIN) or Step-Down (VIN > VO > Vref)
Use
VO =
R1 + R2
R2
⋅ Vref (V)
Booster output is possible only at channel 2 of HA16121. For step-down output, both channels of
HA16116 or channel 1 of HA16121 are used.
VO
R1
R2
VO
R1
R2
Error amp.
IN(−)1 −
CH1
IN(+)1 +
IN(−)2 −
+
CH2
Vref pin
Vref
2.5 V
(internal connection)
Figure 2.1
2.2 Negative Voltage (VO < Vref) for Inverting Output
Use VO = −Vref ⋅
R1 ⋅ R3 + R4 − 1 (V)
R1 + R2
R3
Channel 1 is used for inverting output on both ICs.
Vref pin
R1
R2
R3
R4
VO
Vref 2.5 V
IN(−)1
−
IN(+)2 +
CH1
Error amp
Figure 2.2 Inverting Output
Rev.2.0, Sep.18.2003, page 9 of 33
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