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SP7652ERL/TR Datasheet

  • SP7652ERL/TR

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

  • 16頁

  • SIPEX

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SP7652
Wide Input Voltage Range 6A,
600kHz, Buck Regulator
FEATURES
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
2.5V to 28V Dual Input Stepdown
Output Voltage down to 0.8V
6A Output Capability
Built-in Low RDS
ON
Power FETs (15m鈩?typ.)
Highly Integrated Design, Minimal Components
600kHz Fixed-frequency Operation
UVLO Detects Both V
cc
and V
in
Over Temperature Protection
Short Circuit Protection with Auto-Restart
Wide Bandwith Amp Allows Type II or III Compensation
Programmable Soft Start
Fast Transient Response
High Efficiency: Greater than 92% Possible
Asynchronous Start-Up into a Pre-Charged Output
Small 7mm x 4mm DFN Package
U.S. Patent #6,922,041
DFN PACKAGE
7mm x 4m
m
P
GND
1
P
GND
2
P
GND
3
GND 4
V
FB
5
COMP 6
UVIN 7
GND 8
SS 9
V
IN
10
V
IN
11
V
IN
12
V
IN
13
Heatsink Pad 3
Connect toVIN
Heatsink Pad 2
Connect to GND
TOP VIEW
Heatsink Pad 1
Connect to Lx
26 LX
25 LX
24 LX
23 LX
2 2 V
CC
21 GND
20 GND
19 GND
18 BST
17 NC
16 LX
15 LX
14 LX
SP7652
The SP7652 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed to
be especially attractive for dual supply, 2V step down with 5V used to power the controller. This lower V
cc
voltage
minimizes power dissipation in the part. The SP7652 is designed to provide a fully integrated buck regulator solu-
tion using a fixed 600kHz frequency, PWM voltage mode architecture. Protection features inc lude UVLO, thermal
shutdown and output short circuit protection. The SP7652 is available in the space saving DFN package
.
DESCRIPTION
TYPICAL APPLICATION CIRCUIT
00pF
5.K鈩?/div>
2.5k鈩?/div>
,1%
RSET
(note 2)
nF
2K鈩?/div>

2
3
PGND
PGND
PGND
GND
VFB
COMP
UVIN
GND
SS
VIN
VIN
VIN
VIN
U
SP7652
LX
LX
LX
LX
VCC
GND
GND
GND
BST
NC
LX
LX
LX
26
25
24
23
22
2
20
19
8
7
6
5
4
68.k鈩?/div>
,1%
VOUT
3.3V
0-6A
47uF
Ceramic
X5R 6.3V
.5uH, Irate=8A
22pF
4
5
6
7
5V VCC
CVCC
uF
CF
00pF
8
9
0
ENABLE
VIN
5V - 20V
C
22uF
CSS
22nF

2
3
5.鈩?/div>
SD0AWS
uF
Notes:
Notes:
.
. U
bottom-side layout should have
U
Bottom-Side Layout should have
three contacts isolated from one
three contacts isolated from one another:
V
in
,
another: VIN, SWNODE, and GND
SWnODE,
and GND
2.
2. RSET = 54.48 / (Vout
-
0.8V) (kOhm)
R
SEt
= 54.48 (V
Out
-
0.8V)(kOhmss)
GND
Rev F: /0/06
SP7652 Wide Input Voltage Range 6A, 600kHz, Buck Regulator
漏 Copyright 2006 Sipex Corporation


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