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PDF SD484XP67K65 Data sheet ( Hoja de datos )

Número de pieza SD484XP67K65
Descripción CURRENT MODE PWM CONTROLLER
Fabricantes SL 
Logotipo SL Logotipo



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SD484XP67K65
CURRENT MODE PWM CONTROLLER WITH BUILT-IN HIGH VOLTAGE
MOSFET
DESCRIPTION
SD484XP67K65 is a current mode PWM controller with low
standby power and low start current for power switch. In standby
mode, the circuit enters burst mode to reduce the standby power
dissipation.
The switch frequency is 67KHz with ±2.5 KHz jitter frequency for
low EMI.
SD484XP67K65 includes under voltage lock-out, over voltage
protection, leading edge blanking, over current protection and the
temperature protection. The circuit will restart automatically until
the system is normal after the protection is active.
FEATURES
* Lower start-up current (Typ.6µA)
* Frequency jitter for low EMI
* Overcurrent protection
* Overvoltage protection
* Undervoltage lockout
* Built-in temperature protection
* Built-in high voltage MOSFET
* Auto restart mode
* Burst mode operation
* Cycle by cycle current limit
APPLICATIONS
* Switch power
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: //www.silan.com.cn
Downloaded from DatasheetLib.com - datasheet search engine
REV:1.4 2009.07.09
Page 1 of 10

1 page




SD484XP67K65 pdf
SD484XP67K65
Characteristics
SD4840P67K65
SD4841P67K65
Rise Time
SD4842P67K65
SD4843P67K65
SD4844P67K65
SD4840P67K65
Turn Off Delay
Time
SD4841P67K65
SD4842P67K65
SD4843P67K65
SD4844P67K65
SD4840P67K65
SD4841P67K65
Fall Time
SD4842P67K65
SD4843P67K65
SD4844P67K65
Symbol
Test conditions
tr VDD=0.5BVDSS, ID=25mA
td(OFF) VDD=0.5BVDSS, ID=25mA
tf VDD=0.5BVDSS, ID=25mA
Min.
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Typ.
3
4
15
19
25
27
30
55
70
90
8
10
25
32
42
Max.
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Unit
nS
nS
nS
ELECTRICAL CHARACTERISTICS (unless otherwise specified, Tamb=25°c)
Characteristics
Undervoltage Section
Start Threshold Voltage
Stop Threshold Voltage
Oscillator Section
Oscillate Frequency
Frequency Jitter
Frequency Change With
Temperature
Maximum Duty Cycle
Feedback Section
Feedback Source Current
Shutdown Feedback Voltage
Shutdown Delay Current
Current Limit
SD4840P67K65
Peak Current
Limit
SD4841P67K65
SD4842P67K65
SD4843P67K65
Burst mode
SD4844P67K65
Burst Mode High Voltage
Burst Mode Low Voltage
Symbol
Test conditions
Vstart
Vstop
FOSC
FMOD
-- 25° Tamb +85°C
Dmax
IFB
VSD
Idelay
0V VFB 3V
5V VFB VSD
Iover Max. inductor current
VBURH
VBURL
Min.
11
7
61
±1.5
--
72
0.7
5.5
3.5
0.53
0.67
0.80
1.10
1.35
0.4
0.25
Typ.
12
8
67
±2.0
±5
77
0.9
6.0
5.0
0.60
0.75
0.90
1.20
1.50
0.5
0.35
Max.
13
9
73
±2.5
±10
82
1.1
6.5
6.5
0.67
0.83
1.00
1.30
1.65
0.6
0.45
Unit
V
V
KHz
KHz
%
%
mA
V
µA
A
V
V
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: //www.silan.com.cn
Downloaded from DatasheetLib.com - datasheet search engine
REV:1.4 2009.07.09
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