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SI-8011NVS Datasheet(PDF) 1 Page - Sanken electric

Part # SI-8011NVS
Description  Surface-Mount Synchronous Rectifier Step-down Switching Mode Regulator Control ICs
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Manufacturer  SANKEN [Sanken electric]
Direct Link  http://www.sanken-ele.co.jp/en
Logo SANKEN - Sanken electric

SI-8011NVS Datasheet(HTML) 1 Page - Sanken electric

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78
ICs
■Features
• Surface-mount package (TSSOP24)
• High efficiency due to synchronous rectifica-
tion: 93% (at VIN = 5V, IO = 1A, VO = 2.5V)
• Capable of downsize a choke-coil due to IC's
high switching frequency (125kHz typ, On
Time Control). (Compared with conventional
Sanken devices)
•Low reference voltage (Vref) of 1.1V. The
output voltage is variable from 1.1V to 6V.
• High-speed response to a load
• Compatible with low ESR capacitors
• Soft start and output ON/OFF available
• Built-in overcurrent protection circuit
• PWRGD function to indicate the output voltage
status
•High precision reference voltage: 1.1V
± 1.2%
■Absolute Maximum Ratings
Unit
V
V
V
V
V
°C
°C
Ratings
7
25
30
VCC
7
+150
–40 to +150
Symbol
VCC
VIN
VH
VEN
VPWRGD
Tj
Tstg
Parameter
Control-System DC Input Voltage
DC Input Voltage
Boost Block Input Voltage
EN Terminal Input Voltage
PWRGD Terminal Applied Voltage
Junction Temperature
Storage Temperature
(Ta=25
°C)
■Recommended Operating Conditions
Parameter
Control System Input Voltage Range
Input Voltage Range
Output Voltage Range
Operating Temperature Range
Symbol
VCC
VIN
VO
Top
Unit
V
V
V
°C
Ratings
4.5 to 5.5
3 to 18
1.1 to 6
–20 to +85
■Electrical Characteristics
(Ta = 25
°C unless otherwise specified)
Unit
V
mV/
°C
mA
mA
µA
µA
V
V
µS
µS
V
µA
V
µA
µA
V
V
µA
V
V
V
µA
µA
Symbol
VO
∆VO/∆T
Iop
Iop
Istd1
Istd2
Vuvlo1
Vuvlo2
Ton
Toff
Vref
Iref
RonHH
RonHL
RonLH
RonLL
VH-VLIN
Ilim
Iss
Vcelo
Vcehi
ICE
Vsens
Vsens
Vpwrgd
Ipwrgd
Ipwrgd
Ratings
min.
typ.
max.
–1.2%
1.1
+1.2%
±0.03
6
1
100
50
3.7
4.4
2.5
2.9
2
1
1.1
1.2
1.3
100
5.5
5.5
5.5
5.5
4.5
5
5.5
90
100
110
±20
0
0.8
2.4
VCC
5
1.32
0.88
0.4
120
5
Conditions
VIN=5V, VCC=5V, VSNS connected to VO, IO=0A
VIN=5V, VCC=5V, VSNS connected to VO, IO=0A, Ta=0 to 85
°C
VCC=5V, EN=H, FADJ:open
VIN=5V, EN=H
VCC=5V, EN=L
VIN=5V, EN=L
VIN=5V
VCC=5V
VCC=5V, VIN=5V, VO=2.5V
VCC=5V
VCC=5V
VCC=5V
VH-VLIN=5V
VH-VLIN=5V
VCC=5V
VCC=5V
VCC=5V, VIN=5V
VCC=5V
VCC=5V
VCC=5V
VCC=5V, EN=5V
VCC=5V
VCC=5V
VCC=5V, Ipwrgd=120
µA
VCC=5V, Vpwrgd=0.4V
Vpwrgd=5V
Surface-Mount, Synchronous Rectifier Step-down Switching Mode Regulator Control ICs
SI-8011NVS
■Applications
•Power supplies for notebook PCs and mobile devices
• Onboard local power supplies
•OA equipment
•For stabilization of the secondary-side output voltage of switching power supplies
Dynamic
Characteristics
Circuit
Current
Undervoltage
Lockout
On Time
Control
High Side
Drive
Low Side
Drive
Bootstrap
Protection
System
Parameter
Output Voltage
Temperature Coefficient of Output Voltage
Circuit Current (VCC Terminal)
Circuit Current (VIN Terminal)
Standby Current 1 (VCC Terminal)
Standby Current 2 (VIN Terminal)
UVLO Operating Voltage 1 (VCC Terminal)
UVLO Operating Voltage 2 (VIN Terminal)
On Time
Minimum Off Time
REF Terminal Voltage
REF Terminal Source Current
On Resistance (high side)
On Resistance (low side)
On Resistance (high side)
On Resistance (low side)
Bootstrap Voltage
Current for Current Limit Detection
Soft Start Terminal Current
EN Low Level Voltage
EN High Level Voltage
EN Bias Level Current
PWRGD Good Voltage (high side)
PWRGD Good Voltage (low side)
PWRGD Low Output Voltage
PWRGD Terminal Current
PWRGD Leakage Current
1-1-2 Switching Mode Regulator ICs


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