si-8405nh Sanken Electric Co., Ltd., si-8405nh Datasheet
si-8405nh
Manufacturer Part Number
si-8405nh
Description
Surface-mount, Synchronous Rectifier Step-down Switching Mode Regulator Control Ics
Manufacturer
Sanken Electric Co., Ltd.
Datasheet
1.SI-8405NH.pdf
(2 pages)
1-1-2 Switching Mode Regulator ICs
■Features
■Applications
■Electrical Characteristics
Reference Voltage
Circuit Current (V
Standby Current (V
On Time
High Side Drive Block ON Resistance (Pulled Up)
High Side Drive Block ON Resistance (Pulled Down)
Low Side Drive Block ON Resistance (Pulled Up)
Low Side Drive Block ON Resistance (Pulled Down)
Overcurrent detection voltage
EN/SS Pin Current
EN/SS Low Level Voltage
EN/SS Threshold Voltage
Undervoltage Lock Out (V
• Input voltage (Vin): 3.0 to 5.5 V
• Synchronous rectification
• Output voltage precision ±1.2%
• Oscillation Frequency: 750 kHz
• Overcurrent protection (Overcurrent value can
• Output can be disabled
• Undervoltage Lock Out
• Soft start function
• High-speed load response
• Power supply for LCD modules
• Power supply for notebook PC
• Onboard local power supplies
• Power supply for LBP/PPC
SI-8405NH
84
be set by the external resistor.)
ICs
IN
IN
Pin)
Pin)
Parameter
IN
)
Surface-Mount, Synchronous Rectifier Step-down Switching Mode Regulator Control ICs
■Recommended Operating Conditions
■Absolute Maximum Ratings
V
Input Voltage Range
Output Voltage Range
Operating Temperature Range
Input Voltage (V
EN/SS Pin Input Voltage
Junction Temperature
Storage Temperature
th (SS Start)
R
V
R
R
Symbol
R
V
V
V
V
on
V
th (ON)
I
T
on
on
I
on
I
uvloh
std
celo
uvlol
op
ss
on
lim
ref
HH
HL
LH
LL
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Parameter
Parameter
IN
pin)
0.494
min.
0.8
2.4
40
7
0
Symbol
Symbol
V
V
T
T
V
V
T
IN
op
EN
stg
IN
o
j
V
V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
Ratings
=5V, Vo=2.5V
=5V, V
=5V, I
=5V, I
=5V, I
=5V, I
=5V, V
=5V, V
V
V
V
V
V
0.500
0.65
IN
IN
IN
IN
IN
400
typ.
3.5
3.5
3.5
3.5
0.9
50
10
5
=5V
=5V
=5V
=5V
=5V
D
D
D
D
EN
=0.1A
=0.1A
=0.1A
=0.1A
EN
EN
=5V
=H
=L
–40 to +150
–0.3 to V
–30 to +85
Ratings
Ratings
3 to 5.5
0.5 to 4
+125
6
IN
0.506
max.
600
0.8
1.0
2.4
2.9
60
13
Unit
Unit
°C
°C
°C
V
V
V
V
mA
mV
Unit
µA
µS
µA
V
Ω
Ω
Ω
Ω
V
V
V
V
V
(T
a
=25°C)
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