WS3252
Electrical Characteristics (TA=25℃，VCC=16V, if not otherwise noted)
Supply Voltage (VCC)
symbol
parameter
Test condition
VCC=13V
Min
Typ
Max Unit
I_VCC_ST
I_VCC_OP
UVLO_ON
UVLO_OFF
VCC_Clamp
Start up current
5
20
uA
mA
V
Operation Current
VCC=18V,INV=2V,CS=0V
VCC falling
2
3
Turn on threshold Voltage
Turn-off threshold Voltage
VCC Zener Clamp Voltage
8.2
13.5
28
9.0
14.8
29
10.5
16.0
31
VCC rising
V
IVCC=10mA
V
Over
voltage
protection
OVP
Ramp VCC until gate shut down 27
28.3
30
V
Threshold
Error Amplifier Section
Vref_EA
Gain
Reference voltage for EA
DC gain of EA
1.97
2
2.03
V
60
dB
Max. Cable compensation
current
I_comp_max
INV=2V,COMP=0V
37.5
625
uA
Current Sense Section
TLEB
Zsense
Leading edge Blanking Time
ns
kΩ
ns
V
Input impedance
OCP control delay
OCP threshold
Soft start time
50
TD_OC
VTH_OC
T_ss
110
0.91
17
0.88
0.94
65
ms
Oscillator Section
Freq_Max1
IC Maximum frequency
55
60
50
khz
khz
System
nominal
switch
Freq_Nom
frequency
Freq_startup
∆f/Freq
INV=0V,COMP=5V
14
±6
khz
%
Frequency shuffling range
Gate Driver Output Section
VOL
VOH
V_clamp
T_r
Output Low Level
Io=20mA
Io=20mA
1
V
Output High Level
6
V
Output Clamp Voltage Level
Output Rising Time
Output Falling Time
12
V
CL=0.5nF
CL=0.5nF
650
40
ns
ns
T_f
Note: 1. Freq_Max indicates IC internal maximum clock frequency. In system application, the maximum operation
frequency of 60kHz nominal occurs at maximum output power or the transition point from CV to CC.
4/8
Steady, keep you advance
WINSEMI [ SHENZHEN WINSEMI MICROELECTRONICS CO., LTD ]
