DataSheet.es OB2276A Hoja de datos PDF



PDF OB2276A Datasheet ( Hoja de datos )

Número de pieza OB2276A
Descripción High Performance Current Mode PWM Controller
Fabricantes On-Bright Electronics 
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OB2276A datasheet

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OB2276A pdf
OB2276A
High Performance Current Mode PWM Controller
ELECTRICAL CHARACTERISTICS
(TA = 25, VDD=18V, unless otherwise noted)
Symbol
Parameter
Supply Voltage (VDD)
Istartup
VDD Start up Current
I_VDD_Operation Operation Current
UVLO(ON)
UVLO(OFF)
Vpull-up
VDD Under Voltage Lockout
Enter
VDD Under Voltage Lockout
Exit (Recovery)
Pull-up PMOS active
OVP(ON)
Over Voltage Protection
Voltage
Vdd_clamp
Feedback Input Section(FB Pin)
VFB_Open
VFB Open Loop Voltage
Avcs
PWM input gain Δ VFB/ Δ
VCS
Maximum duty Max duty cycle @
cycle
VDD=18V,VFB=3V,VCS=0V
Vref_green
Vref_burst_H
Vref_burst_L
The threshold enter green
mode
The threshold exit burst mode
The threshold enter burst
mode
IFB_Short
FB pin short circuit current
VTH_PL
Power Limiting FB Threshold
Voltage
TD_PL
Power limiting Debounce
Time
ZFB_IN
Input Impedance
Current Sense Input(CS Pin)
SST Soft start time
T_blanking
Leading edge blanking time
ZSENSE_IN
Input Impedance
TD_OC
Over Current Detection and
Control Delay
VTH_OC
Vocp_clamping
Oscillator
FOSC
f_OSC
F_shuffling
f_Temp
Internal Current Limiting
Threshold Voltage with zero
duty cycle
CS voltage clamper
Normal Oscillation Frequency
Frequency jittering
Shuffling frequency
Frequency
Temperature
Stability
Test Conditions
VDD=UVLO(OFF)-
1V, measure leakage
current into VDD
VDD=18V,VFB=3V,
CS=0V,Cgate=1nF
CS=0V,FB=3V
Ramp up VDD until
gate clock is off
Ivdd=10mA
Short FB pin to GND
and measure current
From Over Current
Occurs till the Gate
driver output starts to
turn off
VDD=18V, FB=3V,
CS=0V
Min
8
19
28.5
32
3.9
75
80
0.65
62
Typ
3
1.8
9
20
13
30
34
4.2
2
80
1.65
1.25
1.15
0.2
3.7
88
16
4
220
40
100
0.7
0.9
65
+/-4
50
1
Max Unit
20 uA
2.5 mA
10 V
21 V
V
31.5 V
36 V
V
V/V
85 %
V
V
V
mA
V
96 ms
k
ms
ns
k
ns
0.75 V
V
68 kHz
%
Hz
%
©On-Bright Electronics
Confidential
-5-
Preliminary Datasheet
OB_DOC_DS_2276A00

5 Page

OB2276A arduino
PACKAGE MECHANICAL DATA
OB2276A
High Performance Current Mode PWM Controller
Symbol
A
A1
A2
b
c
D
E
E1
e
L
θ
Dimensions In Millimeters
Min Max
1.350
1.750
0.050
0.250
1.250
1.650
0.310
0.510
0.100
0.250
4.700
5.150
3.800
4.000
5.800
6.200
1.270 (BSC)
0.400
1.270
0º 8º
©On-Bright Electronics
Confidential
- 10 -
Dimensions In Inches
Min
0.053
0.002
0.049
0.012
0.004
0.185
0.150
0.228
Max
0.069
0.010
0.065
0.020
0.010
0.203
0.157
0.244
0.050 (BSC)
0.016
0.050
0º 8º
Preliminary Datasheet
OB_DOC_DS_2276A00

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