WS2259
Electrical Characteristics
(T
A
=25℃，VCC=16V, if not otherwise noted)
Supply Voltage (VDD)
Parameter
Operation voltage
Turn on threshold Voltage
Turn-off threshold Voltage
Start up current
Operation Current
Symbol
VDD_OP
UVLO_ON
UVLO_OFF
I_VDD_ST
I_VDD_OP
Test condition
Min
6.8
13.5
Typ
7.5
14.5
4
1.7
Max
30
8
15.5
10
2.3
Unit
V
V
V
uA
mA
V
V
VDD=13V,RI=100K
VDD=16V,RI=100K,V
FB
=3V
GATE with 1nF to GND
VDD_OVP
VDD Zener Clamp Voltage
VDD_Clamp
IVDD=10mA
29
31
Feedback Input Section
V
FB
Open Loop Voltage
FB Pin Short Current
Power limiting FB Threshold
Power limiting Debounce
Input Impedance
Maximum duty cycle
V
FB
_Open
I
FB
_Short
V
TH
_PL
T
D
_PL
Z
FB
_IN
Max_Duty
VDD=16V,FB open,
FB Shorted to GND
VDD=16V, RI=100K
VDD=16V,FB open,RI=100KΩ
VDD=16V,FB=2V/3V,CS open
VDD=16V,FB open,
CS=0,RI=100KΩ
5.4
0.3
3.2
48
11.5
72
5.9
0.45
3.65
60
14.5
77
6.4
0.6
4.0
72
18
82
V
mA
V
ms
kΩ
%
Current Sense Section
Leading edge Blanking Time
OCP control delay
OCP threshold
TLEB
T
D
_OC
T
TH
_OC
GATE with 1nF to GND
FB＝3.2V
0.68
330
70
0.78
0.78
ns
ns
V
Oscillator Section
Frequency
Fosc
Jitter period
Jitter range
Burst mode frequency
Frequency variation versus temp. Deviation
Frequency variation versus VDD
Fosc_BM
∆f_temp
∆f_VDD
VDD=9.5V,RI=100K, FB=1V
TEMP = -20 to 85℃
VDD = 12 to 25V
VDD=16V,RI=100K,,FB=3.2V
For 65K
60
65
4
±5
22
5
5
70
khz
ms
%
khz
%
%
RI Section
RI voltage
V
RI
VDD=16V,RI=100KΩ,CS=1V
1.94
2
2.06
V
Thermal protection
Thermal shutdown temperature
T_shutdown
150
℃
GATE Output Section
Output voltage Low
Output voltage high
Output clamp voltage
Rising time
Falling time
VOL
VOH
VClamp
Tr
Tf
VDD = 16V, Io = -20mA
VDD = 16V, Io = 20mA
VDD = 20V
VDD = 16V, GATE with 1nF to GND
VDD = 16V, GATE with 1nF to GND
9
11
13
250
75
14.5
0.8
V
V
V
ns
ns
5/11
Steady, keep you advance
WINSEMI [ SHENZHEN WINSEMI MICROELECTRONICS CO., LTD ]
