EL7563
Closed-Loop AC Electrical Specifications
PARAMETER
F
OSC
t
SYNC
M
SS
t
BRM
t
LEB
D
MAX
DESCRIPTION
Oscillator Initial Accuracy
Minimum Oscillator Sync Width
Soft Start Slope
FET Break Before Make Delay
High Side FET Minimum On Time
Maximum Duty Cycle
(Continued)
V
S
= V
IN
= 3.3V, T
A
= T
J
= 25掳C, C
OSC
= 390pF, unless otherwise specified.
CONDITIONS
MIN
310
TYP
365
25
0.5
15
150
95
MAX
420
UNIT
kHz
ns
V/ms
ns
ns
%
Typical Application Diagrams
C5
1 VREF
0.1碌F
2 SGND
C4
3 COSC
R4
22鈩?/div>
C3
0.22碌F
390pF
4 VDD
C2
5 VTJ
2.2nF
6 PGND
V
IN
3.3V
C1
330碌F
7 PGND
8 PGND
9 PGND
10 VIN
11 VIN
12 NC
13 STP
14 STN
LX 23
LX 22
LX 21
LX 20
LX 19
LX 18
NC 17
PGND 16
PGND 15
VHI 24
C6
0.22碌F
L1
4.7碌H
C10
2.2nF
C7
330碌F
D1
VDRV 25
D3
C9
0.1碌F
V
OUT
2.5V
4A
R2
1.58k鈩?/div>
R1
1k鈩?/div>
PG 26
D2
D4
C8
0.22碌F
FB 27
EN 28
28-PIN HTSSOP
4
FN7296.2
May 13, 2005
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