HA16654A Datasheet, PDF (8/15 Pages) Hitachi Semiconductor – PWM Controlled Switching Regulator

HA16654A, HA16664A Series
A
11 k Ω
R₁
27 k Ω ^Vref
EI
V_IN
DB
R_T
39 k Ω R2
G
220 pF
OUT
GND
Dummy Load
(MOS FET)
2SD667
15 Ω
2SB647
2,200 pF
I _CCL
I _IN
I _CCS
h_FE of 2SD667 and 2SD647 is defined as 60 min and 200 max
Figure 4 I_CCS • I_CCL Measurement Circuit
V_IN
20
V_IN
V_IN
2SD667
80%
OUT
Output
2SB647 ^{15 Ω}
20%
GND
2,200 pF
t_r
t_f
Dummy Load
(MOS FET)
Figure 5 t_r • t_f Measurement Circuit
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