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Electrical Characteristics
(T
A
=25°C, V
DD
=16V, unless otherwise specified)
Symbol
I
startup
I
VDD
UVLO(ON)
UVLO(OFF)
OVP(ON)
V
DD_CLAMP
V
FB_OPEN
I
FB_SHORT
V
TH_0D
V
TH_PL
T
D_PL
Z
FB_IN
T
SOFTSTART
T
BLANKING
Z
SENSE_IN
T
D_OC
V
TH_OC
F
OSC
ΔF
TEMP
ΔF_V
DD
D
MAX
F
BURST
B_V
DSS
R
DS(ON)
ΔF_V
DD
Test Conditions
Supply Voltage (V
DD
)
V
DD
=14.5V, Measure
V
DD
Start up Current
Leakage current into V
DD
Operation Current
V
FB
=3V
V
DD
Under Voltage Lockout Enter
‐
V
DD
Under Voltage Lockout Exit(Recovery)
‐
CS=0V, FB=3V Ramp up V
DD
Over voltage protection voltage
until gate clock is off
V
DD
Zener clamp Voltage
I
DD
=10mA
Feedback Input Section(FB pin)
V
FB
Open Loop Voltage
‐
Short FB pin to GND and
FB pin short circuit current
measure current
Zero Duty Cycle FB Threshold Voltage
‐
Power Limiting FB Threshold Voltage
‐
Power Limiting Debounce Time
‐
Input Impedance
‐
Current Sense Input(Sense Pin)
Soft start time
‐
Leading edge blanking time
‐
Input Impedance
‐
From Over Current Occurs
till the Gate drive output
Over Current Detection and Control Delay
start to turn off
Internal Current Limiting Threshold Voltage FB=3.3V
Oscillator
Normal Oscillation Frequency
‐
Frequency Temperature Stability
‐
Frequency Voltage Stability
‐
Maximum duty cycle
FB=3.3V, CS=0V
Burst Mode Base Frequency
‐
Power MOSFET Section
MOSFET Drain Source Breakdown Voltage
‐
Static Drain to Source On Resistance
V
GS
=10V, I
DS
=1A
Frequency
Frequency Modulation range /Base
‐
frequency
Parameter
Min
‐
‐
14.2
8.5
27.0
‐
5.4
‐
‐
‐
‐
‐
‐
‐
‐
‐
0.76
45
‐
‐
70
‐
‐
‐
‐4
Typ.
3
2.0
14.8
9.0
28.5
30
5.6
1.55
0.8
3.7
50
4
4
300
40
120
0.8
50
5
5
80
22
650
5.0
‐
Max
20
‐
16.0
9.5
30.0
‐
6.0
‐
‐
‐
‐
‐
‐
‐
‐
‐
0.82
55
‐
‐
90
‐
‐
5.8
4
Unit
uA
mA
V
V
V
V
V
mA
V
V
ms
KΩ
ms
ns
KΩ
ns
V
KHz
%
%
%
KHz
V
Ω
%
DS‐RS2253‐11
May,
2010
www.Orister.com
ORISTER [ ORISTER CORPORATION ]
