SI-8205NHD
■External Dimensions (HSOP8)
(Unit : mm)
Pin Assignment
Pin 1 Mark
q
w
e
r
t
y
u
i
GND
EN/SS
V
IN
FSET
COMP
FB
BS
SW
Enlarged View of A
0.695 TYP
5.20
A
0.4
1.27
0.40
Plastic Mold Package Type
Flammability
Product Mass
: UL 94V-0
: Approx. 0.1 g
2.90
■Block Diagram
③VIN
⑦BS
+
CUR_SUS
REG
–
REG
REG_DRV
REG
DRV_REG
REG_DEV
REG_DEV
REG
REG_BIAS STANDBY
STANDBY
OVC
H/S
Drv
BC
OCP_CMP
RegOK
M1
REG_UVLO
VinOK
VIN_UVLO
Level
Shift
PWR_stage
M2
L/S
Drv
⑧SW
REG
REG
VinOK
REG
VinOK
Level
Shift
Phase
LSoft
GATE_logic
Set PH
Phase_
logic
Fere Off
Ramp
OSC_RAMP
REG
STANDBY
FB
REG
FSET④
Res PH
REG
CUR_COMP
VinOK
OVT
BS_CHG
PH Open
REG
Fere_Off
Set PH
OVT
Control_logic
BG
TSD
REG
RegOK
VinOK
INIT OVP
OVP
OVP_CMP
REG_BIAS
REG
SS_Ref
⑥FB
REG
BG
Ref
Rnf
SS_Rnf
EN_SS
Err_AMP
STANDBY
REF
①GND
⑤COMP
■Typical Connection Diagram
C1:10µF/50V×2
ꢀ(murata:GRM55DB31H106KA87)
C2:22µF/16V×2
ꢀ(murata:GRM32ER71A226KE20)
C3:270pF
VIN
R5
C4
3
7
BS
L1
V
O
8
VIN
EN/SS
2
SW
ꢀ(murata:GRM18 type)
C4:10µF
C1
SI-8205NHD
C2
4
6
ꢀ(murata: GRM18 type)
C5:1µF
FSET
GND
1
FB
COMP
GND
R1
R2
5
C3
C5
R4
ꢀ(murata: GRM18 type)
L1:10µH
GND
C6
Open
D1: SJPB-L6 (Sanken)
R1:9kΩ(When Vo=5V)
R2:1kΩ
R3
D1
R3:51kΩ
R4:150kΩ
R5:47Ω
ICs
51
ETC [ ETC ]
