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PDF SI1128 Data sheet ( Hoja de datos )
| Número de pieza | SI1128 | |
| Descripción | High Precision CC/CV Primary-Side Controller | |
| Fabricantes | SANY Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SI1128 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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SI1128
FEATURES
◆ 5% Constant Voltage Regulation,
5%Constant Current Regulation at
Universal AC input
◆ Primary-side Sensing and Regulation
Without TL431 and Opto-coupler
◆ Low Start-up Current: 1μA (Typical)
◆ Low Static Current: 300μA (Typical)
◆ Programmable CV and CC Regulation
◆ Adjustable Constant Current and Output
Power Setting
◆ Built-in Secondary Constant Current
Control with Primary Side Feedback
◆ Peak-Current-Mode Control
◆ Compensates for transformer inductance
tolerances
◆ Compensates for cable voltage drop
◆ Built-in Leading Edge Blanking (LEB)
◆ Cycle-by-Cycle Current Limiting
◆ VDD Under-Voltage lockout (UVLO)
◆ VDD Over-Voltage Protection(OVP)
TYPICAL APPLICATIONS
High Precision CC/CV
Primary-Side Controller
APPLICATIONS
AC/DC offline SMPS for
◆ Cell Phone Charger
◆ Digital Cameras Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
SI1128 is offered in SOT23-6 package.
PIN CONFIGURATION
The pin map is shown as below for
SOT23-6.
pin order in schem is for demonstration not for real
Pin order is oriented by marking
http://www.szsemi.com
TEL:0755-36858333
PAGE: 1
1 page  
SI1128
ELECTRICAL CHARACTERISTICS
(TA = 25℃, VDD=15V, if not otherwise noted)
Symbol
Parameter
Supply Voltage (VDD) Section
I start-up
I static
UVLO(ON)
Start up Current
Static Current
VDD Under Voltage
Lockout Enter
UVLO(OFF)
VDD Under Voltage
Lockout Exit
Maximum VDD
operation
voltage
OVP
Over voltage protection
Threshold
Current Sense Input Section
TLEB
LEB time
Vth_oc
Over current threshold
Td_oc
OCP Propagation delay
FB Input Section
Vref_fb
Reference voltage for
feedback threshold
Tpause_min
Tpause_max
Icomp_cable
Maximum pause
Maximum
cable
compensation current
BASE Drive section
Is_max
Base sourcing maximum
current
Is_preoff
Base sourcing current
after pre-off
Rdson_I
Base drive low side on
resistor
Test Conditions
VDD=11V
VDD=15V
VDD falling
VDD rising
Min
6.0
11.5
Typ.
1
300
6.8
12.5
25
485
1.98
8
42
27
500
500
110
2.00
2.0
10
45
20 30
0.5 1
1
Max
3
400
7.6
13.5
Unit
uA
uA
V
V
25 V
29 V
ns
515 mV
ns
2.02
12
48
V
uS
mS
uA
40 mA
1.5 mA
ohm
http://www.szsemi.com
TEL:0755-36858333
PAGE: 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SI1128.PDF ] | |
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