si-8405nl Sanken Electric Co., Ltd., si-8405nl Datasheet
si-8405nl
Manufacturer Part Number
si-8405nl
Description
Surface-mount, Synchronous Rectifier Step-down Switching Mode Regulator Control Ics
Manufacturer
Sanken Electric Co., Ltd.
Datasheet
1.SI-8405NL.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
• Input voltage (Vin): 3.0 to 5.5 V
• Synchronous rectification
• Output voltage precision ±1.2%
• Oscillation Frequency: 250 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
EN/SS Threshold Voltage
Undervoltage Lock Out (V
SI-8405NL
80
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
R
th(SS Start)
R
R
V
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
T
V
T
V
EN
stg
V
T
IN
j
IN
op
O
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
IN
IN
IN
IN
IN
400
typ.
3.5
3.5
3.5
3.5
0.9
50
10
5
2
=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
–40 to +85
–0.3 to V
Ratings
3 to 5.5
0.5 to 4
Ratings
+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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si-8405nl Summary of contents
Page 1
... Switching Mode Regulator ICs SI-8405NL Surface-Mount, Synchronous Rectifier Step-down Switching Mode Regulator Control ICs ■Features • Input voltage (Vin): 3.0 to 5.5 V • Synchronous rectification • Output voltage precision ±1.2% • Oscillation Frequency: 250 kHz • Overcurrent protection (Overcurrent value can be set by the external resistor.) • ...
Page 2
... Generator Vref Zep Vref 1 0.5V SS_CON Vin Vin ISEN DRVH DRVL + GND Vo 3 SI-8405NL IN O SENS SEN : UL 94V-0 : Approx. 0.1 g Vin ISEN H_Side_ DRVH Drive L_Side_ DRVL Drive GND Vo Comp – VSNS + + C : 10µ 330µ 0.022µF ...