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PDF SP6853D8TGB Data sheet ( Hoja de datos )
| Número de pieza | SP6853D8TGB | |
| Descripción | Green-Mode PWM Controller | |
| Fabricantes | SYNC POWER | |
| Logotipo |  |
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SP6853
Green-Mode PWM Controller
DESCRIPTION
The SP6853 is a low cost , low startup current ,
current mode PWM controller with green-mode
power-saving operation. 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 SP6853 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.
SP6853 is available by SOT-23-6L / DIP-8P
packages.
FEATURES
z High-Voltage BiCMOS Process
z Very Low Startup Current (<20µA)
z Under Voltage Lockout (UVLO )
z Current Mode Control
z Non-audible-noise Green Mode Control
z Current Limiting
z LEB (Leading-Edge Blanking) on CS Pin
z OLP (Over Load Protection)
z OVP (Over Voltage Protection) on Vcc Pin
z Leading-Edge Blanking
z Programmable Switching Frequency
z Internal Slope Compensation
z Green-Mode Control for Power Saving
z 300mA Driving Capability
z
APPLICATIONS
z AC/DC Switching Power Adaptor
z Battery Charger
z PC 5V Standby Power.
z Open-Frame Switching Power Supply
PIN CONFIGURATION
SOT-23-6L
DIP-8P
PART MARKING
SOT-23-6L
DIP-8P
2008/08/10 Ver.1
Page 1
1 page  
SP6853
Green-Mode PWM Controller
ELECTRICAL CHARACTERISTICS
(TA=25℃, VCC=15V, unless otherwise specified.)
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
Supply Voltage ( Vcc Pin )
Istt Startup Current
Iop Operating Current
UVLO (off) Min. Operating Voltage
UVLO (on ) Start Threshold Voltage
OVP Level Over Voltage Protection
VCOMP = 0V
VCOMP = 3V
Protection tripped
(OLP, OVP)
9.0
15.0
24
10 20 uA
2.7 4 mA
2.4 mA
1.0 mA
10.0 11.0
16.0 17.0
26 29.5
V
V
V
Voltage Feedback ( Comp Pin )
Isc Short Circuit Current
Vop Open Loop Voltage
VTH(GM) Green Mode Threshold VCOMP
1.25 2.2 mA
6V
2.35 V
Oscillator ( RT Pin )
FOSC Frequency
RT=100KΩ
FOSC(GM) Green Mode Frequency
Fs=65.0KHz
Fdt Frequency Variation versus Temp. Deviation (-40°C ~105°C)
Fdv Frequency Variation versus VCC Deviation (VCC=11V-25V)
60.0 68.0 75.0 KHz
22 KHz
3%
1%
Current Sensing ( CS Pin )
Vcs(off) Maximum Input Voltage
TLEDD Leading Edge Blanking Time
Zcs Input impedance
TPD Delay to Output
0.8 0.85 0.9 V
280 nS
1 MΩ
100 nS
Gate Driver Output ( OUT Pin )
DC (Max) Maximum Duty Cycle
DC (Min) Minimum Duty Cycle
VOL Output Low Level
VOH Output High Level
Tr Rising Time
Tf Falling Time
VCC=15V,
Io=20mA
VCC=15V,
Io=20mA
Load Cap=1000pF
Load Cap=1000pF
70
8
75 80 %
0%
1V
V
50 200 nS
30 120 nS
OLP ( Over Load Protection )
TLOLP OLP Trip Level
TDOLP OLP Delay Time (note)
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.
2008/08/10 Ver.1
Page 5
5 Page 
SP6853
Green-Mode PWM Controller
DIP- 8P PACKAGE OUTLINE
2008/08/10 Ver.1
Page 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SP6853D8TGB.PDF ] | |
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