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PDF SP6850AD8TG Data sheet ( Hoja de datos )
| Número de pieza | SP6850AD8TG | |
| Descripción | Green-Mode PWM Controller | |
| Fabricantes | SYNC POWER | |
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SP6850
Green-Mode PWM Controller
DESCRIPTION
The SP6850 is the current mode PWM controller
with green-mode power-saving operation, to meet the
low standby-power needs of low-power SMPS. This
green-mode function enables the power supply to
easily meet even the strictest power conservation
requirements. The functions such as the leading-edge
blanking of the current sensing, internal slope
compensation and the small package provide the high
efficiency / low cost for SMPS power applications.
SP6850 is processed by BiCMOS fabrication, that
enables reducing the start-up current and the
operating current. SP6850 is available by SOT-23-6L
/ DIP-8P packages.
APPLICATIONS
z AC/DC Switching Power Adaptor
z Battery Charger
z PC 5V Standby Power.
z Open-Frame Switching Power Supply
FEATURES
z High-Voltage BiCMOS Process
z Very Low Startup Current (Typ ~ 8µA)
z Under Voltage Lockout (UVLO )
z Current Mode Control with Cycle Peak
z Current Limiting
z Leading-Edge Blanking
z Programmable Switching Frequency
z Internal Slope Compensation
z Green-Mode Control for Power Saving
z Non-audible-noise Green Mode Control
z 300mA Driving Capability
z OVP (Over Voltage Protection) on Vcc Pin
PIN CONFIGURATION
SOT-23-6L
PART MARKING
SOT-23-6L
DIP-8P
DIP-8P
2007/04/10 Ver.3
Page 1
1 page  
SP6850
Green-Mode PWM Controller
ELECTRICAL CHARACTERISTICS
(TA=25℃, VCC=15V, unless otherwise specified.)
Symbol
Parameter
Conditions
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 = 3V
Voltage Feedback ( Comp Pin )
Isc Short Circuit Current
Vop Open Loop Voltage
VTH(GM) Green Mode Threshold VCOMP
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)
Current Sensing ( CS Pin )
Vcs(off) Maximum Input Voltage
SP6850BD8TG
SP6850BS26RG
SP6850AD8TG
SP6850AS26RG
Zcs Input impedance
TPD Delay to Output
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
VCC=15V,
Io=20mA
VCC=15V,
Io=20mA
Load Cap=1000pF
Tf Falling Time
Load Cap=1000pF
Min.
9.0
15.0
28
60.0
0.8
0.7
70
8
Typ. Max. Unit
8 20 uA
2 4 mA
10.0 11.0 V
16.0 17.0 V
36 V
2.2 3.0 mA
5.0 V
2.35 V
65.0 75.0 KHz
20 KHz
3%
1%
0.85 0.9
0.75 0.8
V
50 KΩ
150 nS
75 80 %
0%
1V
V
50 200 nS
30 120 nS
2007/04/10 Ver.3
Page 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SP6850AD8TG.PDF ] | |
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