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SP7663ERL/TR Datasheet

  • SP7663ERL/TR

  • Wide Input Voltage Range 6A, 600kHz, Buck Regulator

  • 19頁(yè)

  • SIPEX

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SP7663
Wide Input Voltage Range
6A, 600kHz, Buck Regulator
FEATURES
鈻?/div>
4.75V to 22V Input Voltage Range using Single Supply
鈻?/div>
3V to 22V Input Voltage Range using Dual Supply
鈻?/div>
鹵% 0.8V Reference
鈻?/div>
6A Output Capability
鈻?/div>
Current Limiting using Inductor DCR
鈻?/div>
Built in Low R
DS(ON)
Power Switches
鈻?/div>
600 kHz Fixed Frequency Operation
鈻?/div>
Over Temperature Protection
鈻?/div>
Short Circuit Protection with Auto-Restart
鈻?/div>
Wide BW Amp Allows Type II or III Compensation
鈻?/div>
Programmable Soft Start
鈻?/div>
Fast Transient Response
鈻?
High Efficiency: Greater than 95%
Possible
鈻?
Nonsynchronous Start-Up into a Pre-Charged Output
鈻?
Available in RoHS Compliant, Lead Free Packaging:
Small 7mm x 4mm DFN
鈻?/div>
U.S. Patent #6,922,04
LX
LX
LX
26
PowerBlox
SP7663
TM
DFN PACKAGE
7mm x 4mm (Option 2)
1
BOTTOM VIEW
Heatsink Pad 1
Connect to Lx
P
GND
25
24
2 P
GND
3 P
GND
4
P
GND
LX
23
V
CC
2 2
UV
IN
21
GND
20
GND
19
V
IN
18
BST 17
LX 16
LX 15
LX 14
Heatsink Pad 3
Connect to V
INP
Pin 29
Heatsink Pad 2
Connect to GND
Pin 28
Pin 27
5 GND
6 V
FB
7 COMP
8
SS
9 GND
10 ISN
11 ISP
12 SWN
13 VINP
DESCRIPTION
The SP7663 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed
for use with a single 4.75V to 22V single supply or 3V to 22V input if an external Vcc is provided. The SP7663
provides a fully integrated buck regulator solution using a fixed 600kHz frequency, PWM voltage mode architecture.
Protection features include UVLO, thermal shutdown, output current limit and short circuit protection. The SP7663
is available in the space saving DFN package
.
TYPICAL APPLICATION CIRCUIT
VOUT
VIN
12V
C2
22uF
C1
22uF
LX
L1
1.5uH, 5.5 mOhm
R3
4.99k鈩?/div>
C4
R4
4.99k鈩?/div>
0.1uF
3.30V, 0-6A
28
SWN PAD
GND PAD
GND
1
2
PGND
PGND
PGND
PGND
GND
VFB
COMP
SS
GND
ISN
ISP
SWN
VIN
27
LX
LX
26
25
24
23
22
21
20
19
18
17
16
15
14
RZ3
3.09k鈩?/div>
C5
100uF
CZ2
270pF
CP1
RZ2
75k鈩?1%
10pF
3
4
5
6
7
U1
SP7663
ISP
ISN
LX
LX
VCC
UVIN
GND
GND
VIN
BST
LX
LX
LX
CZ3
180pF
R1
68.1k鈩?1%
R2
CVCC
4.7uF
GND
NC
21.5k鈩?1%
CF1
100pF
CSS
47nF
8
9
10
11
ISN
C9
6.8nF
12
13
VIN PAD
6.8nF
CBST
SD101AWS
DBST
ISP
LX
R13
3.3鈩?/div>
Rs1
29
LX
Cs1
Rs2
Cs2
1 Ohm
2.2nF
1 Ohm
2.2nF
Feb2-07 Rev O
SP7663 Wide Input Voltage Range 6A, 600kHz Buck Regulator
漏 2007 Sipex Corporation


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