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PDF SP6852 Data sheet ( Hoja de datos )
| Número de pieza | SP6852 | |
| Descripción | Green-Mode Power Switch | |
| Fabricantes | SYNC POWER | |
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SP6852
Green-Mode Power Switch
DESCRIPTION
The SP6852 is a low cost, low startup current, current
mode PWM controller with green-mode
power-saving operation. Built-in 700V MOSFET
provides simple design for adapter. The integrated
functions include the leading-edge blanking of the
current sensing, internal slope compensation. It
would provide the users a superior AC/DC power
application of higher efficiency, low external
component counts, and lower cost solution for
applications.
The SP6852 features more protections or functions
for the following characteristics :
※Add OLP (Over Load Protection) function to
provide better protection performance for fault
conditions like short circuit or over load.
※Modify the OVP (Over Voltage Protection)
mechanism from the cycle-by-cycle mode to the
hiccup mode.
SP6852 is available in DIP-8P package.
APPLICATIONS
AC/DC Switching Power Adaptor
Battery Charger
PC 5V Standby Power.
Open-Frame Switching Power Supply
FEATURES
High-Voltage BiCMOS Process
Very Low Startup Current (<20µA)
Under Voltage Lockout (UVLO )
Current Mode Control
Non-audible-noise Green Mode Control
Current Limiting
OLP (Over Load Protection)
OVP (Over Voltage Protection) on Vcc Pin
Leading-Edge Blanking
Programmable Switching Frequency
Internal Slope Compensation
Green-Mode Control for Power Saving
Building in 650V MOSFET
PIN CONFIGURATION
DIP-8P
PART MARKING
DIP-8P
2012/08/09 V1
Page 1
http://www.Datasheet4U.com
1 page  
SP6852
Green-Mode Power Switch
ELECTRICAL CHARACTERISTICS
(TA=25℃, VCC=15V, unless otherwise specified.)
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
Supply Voltage ( Vcc Pin )
Istt Startup Current
10 20 uA
VCOMP = 0V
2.7 4 mA
Iop Operating Current
VCOMP = 3V
Protection
tripped
(OLP, OVP)
2.4
1.0
mA
mA
UVLO (off) Min. Operating Voltage
9.0 10.0 11.0 V
UVLO (on ) Start Threshold Voltage
15.0 16.0 17.0 V
OVP Level Over Voltage Protection
26 27 29.5 V
Voltage Feedback ( Comp Pin )
Isc Short Circuit Current
1.25 2.2 mA
Vop Open Loop Voltage
6V
VTH(GM) Green Mode Threshold VCOMP
2.35 V
Oscillator ( RT Pin )
FOSC Frequency
RT=100KΩ
60.0 68.0 70.0 KHz
FOSC(GM) Green Mode Frequency
Fs=65.0KHz
22 KHz
Fdt Frequency Variation versus Temp. Deviation (-40°C ~105°C)
3%
Fdv Frequency Variation versus VCC Deviation (VCC=11V-22V)
1%
Current Sensing ( CS Pin )
Vcs(off) Maximum Input Voltage
0.8 0.85 0.9 V
TLEDD Leading Edge Blanking Time
280 nS
Zcs Input impedance
1 MΩ
TPD
MOSFET
DC (Max)
DC (Min)
VDSS
IDSS
RDS(ON)
VSD
Delay to Output
Maximum Duty Cycle
Minimum Duty Cycle
Drain-Source Breakdown Voltage
Drain-Source Leakage Current
On-State Resistance
Forward On Voltage
Co Output capacitance
Tr Rising Time
Tf Falling Time
OLP ( Over Load Protection )
TLOLP OLP Trip Level
TDOLP OLP Delay Time (note)
100 nS
70 75 80 %
0%
VGS=0V, ID=250uA 700
V
VGS=0V, VDS=600V
VGS=10V, ID=0.6A
10 uA
8Ω
VGS=0V, IS=1.4A
1.5 V
VGS=0V, VDS=25V,
f=1.0MHz
27
pF
50 200 nS
30 120 nS
5.0 V
60 mS
Note: The OLP delay time is proportional to the period of switching cycle. So that, the lower RT value will set the higher
switching frequency and the shorter OLP delay time.
2012/08/09 V1
Page 5
5 Page 
SP6852
Green-Mode Power Switch
DIP- 8P PACKAGE OUTLINE
2012/08/09 V1
Page 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SP6852.PDF ] | |
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