參數(shù)資料
型號: SG5842JADZ
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: Highly Integrated Green-Mode PWM Controller
中文描述: 0.23 A SWITCHING CONTROLLER, 68 kHz SWITCHING FREQ-MAX, PDIP8
封裝: ROHS COMPLIANT, MS-001BA, DIP-8
文件頁數(shù): 5/14頁
文件大小: 481K
代理商: SG5842JADZ
Product Specification
Highly Integrated Green-Mode PWM Controller
SG5842A/JA
System General Corp.
Version 1.4.2 (IAO33.0026.B6)
- 5 -
www.sg.com.tw www.fairchildsemi.com
October 30, 2007
Oscillator Section
Symbol
Parameter
Test Condition
R
I
=26K
R
I
=26K
(5842JA only)
R
I
=26K
(5842JA only)
R
I
=26K
V
DD
=11.5V to 20V
T
A
=-20 to 85
°
C
Min.
62
±3.7
3.9
18
Typ.
65
±4.2
4.4
22
Max.
68
±4.7
4.9
25
5
5
Unit
Center Frequency
Hopping Range
F
OSC
Normal PWM Frequency
KHz
t
HOP
F
OSC-G
F
DV
F
DT
Hopping Period
Green-Mode Minimum Frequency
Frequency Variation vs. V
DD
Deviation
Frequency Variation vs. Temperature Deviation
ms
KHz
%
%
Feedback Input Section
Symbol
Parameter
A
V
FB Input to Current Comparator Attenuation
Z
FB
Input Impedance
V
FB-OPEN
Output High Voltage
V
FB-OLP
FB Open-Loop Trigger Level
t
D-OLP
FB Open-Loop Protection Delay
V
FB-N
Green-Mode Entry FB Voltage
V
FB-G
Green-Mode Ending FB Voltage
Test Condition
FB pin open
Min.
1/4.5
4
5.5
5.0
50
1.9
Typ.
1/4.0
56
2.1
V
FB-N
-0.5
Max.
1/3.5
7
5.4
62
2.3
Unit
V/V
K
V
V
ms
V
V
R
I
=26K
R
I
=26K
R
I
=26K
Current Sense Section
Symbol
Parameter
Z
SENSE
Input Impedance
V
STHFL
Current Limit Flatten Threshold Voltage
V
STHVA
Current Limit Valley Threshold Voltage
DCY
SAW
Duty Cycle of SAW Limit
t
PD
Propagation Delay to GATE Output
t
LEB
Leading-Edge Blanking Time
Test Condition
V
STHFL
–V
STHVA
Maximum Duty Cycle
R
I
=26K
R
I
=26K
Min.
0.85
200
Typ.
12
0.90
0.22
45
150
270
Max.
0.95
200
350
Unit
K
V
V
%
ns
ns
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