參數(shù)資料
型號: TK75005
廠商: TOKO Inc.
英文描述: LOW-COST FLEXIBLE PWM CONTROLLER
中文描述: 經(jīng)濟實惠且靈活的PWM控制器
文件頁數(shù): 1/9頁
文件大?。?/td> 83K
代理商: TK75005
January 1999 TOKO, Inc.
Page 1
TK75005
OSCILLATOR
FB
CT
ICHG
175 μA
fCLK
COMSLOPE
2.6 V
CURRENT
PWM LATCH
DRV
ODETECTOR
GND
BANDGAP
UVLO
10.0 V
8.0 V
VCC
ICT
1.02 V
S
Q
IDS
1.975 mA
OVP
EAIN
EAOUT
R
2.5 V
GM STAGE
OVP
DRV
EAIN
VCC
GND
EAOUT
FB
CT
OVP
DRV
EAIN
VCC
GND
EAOUT
FB
CT
APPLICATIONS
I
Power Factor Correction Converters
I
Off-Line Power Supplies
I
Industrial Power Supplies
I
Off-Line Battery Charger
FEATURES
I
Can Be Used For Power Factor Correction/Line
Harmonics Reduction to Meet IEC1000-3-2
Requirements
I
Maximum Duty Ratio 89% (typ.)
I
Low Standby Current for Current-Fed Start-Up
I
Current-Mode or Voltage-Mode Control
I
Internal User-Adjustable Slope Compensation
I
Pulse-by-Pulse Current Limiting
TK75005
BLOCK DIAGRAM
DESCRIPTION
The TK75005 is an 8-pin PWM controller suitable for both
voltage-mode and current-mode control. It also has
advanced features not available in controllers with a higher
pin count. One such feature is a sawtooth current flowing
out of the feedback pin (FB), which provides a slope
compensation ramp (in current mode applications) in
proportion to the resistance terminating that FB pin.
The TK75005 offers the same features as the TK75003
with the addition of the Error Amplifier and the Overvoltage
Protection (OVP) functions, and the deletion of the
Overcurrent Frequency Reduction feature.
This PWM has features similar to the UC3842 (please
refer to UC3842 Comparison Section).
ADVANCED
INFORMATION
75005
75005
SOP-8
DIP-8
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
MG: Magazine
Tape/Reel Code
TK75005
PACKAGE CODE
D: DIP-8
M: SOP-8
TEMPERATURE RANGE
C: -40 TO 80 C
Temp. Range
Package Code
LOW-COST FLEXIBLE PWM CONTROLLER
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