Voltage Range. SP7653 Datasheet

SP7653 Range. Datasheet pdf. Equivalent


Sipex Corporation SP7653
www.DataSheet4U.com
Wide Input Voltage Range,
1.3MHz, Buck Regulator
SP7653
Power Blox TM
FEATURES
2.5V to 20V Step Down Achieved Using Dual Input
Output Voltage down to 0.8V
3A Output Capability
Built in Low RDSON Power Switches (40 m1 typical)
Highly Integrated Design, Minimal Components
1.3MHz Fixed Frequency Operation
UVLO Detects Both VCC and VIN
Over Temperature Protection
Short Circuit Protection with Auto-Restart
Wide BW Amp Allows Type II or III Compensation
Programmable Soft Start
Fast Transient Response
High Efficiency: Greater than 95% Possible
Asynchronous Start-Up into a Pre-Charged Output
Small 7mm x 4mm DFN Package
U.S. Patent #6,922,041
PLGXND261
PLGXND252
PLGXND243
LGXND234
VCVCFB2 52
GCNODMP216
GNUDVIN207
GNGDND198
BSTSS189
NCVIN1710
LXVIN1611
LXVIN1512
LXVIN1413
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Heatsink Pad 2
CoHnenaetscitntkopGaNd D2
Connect to GND
Heatsink Pad 3
Connect to VIN
Heatsink pad 3
Connect to VIN
126 LPXGND
225 LPXGND
324 LPXGND
423
GND
LX
5
22
VVCFCB
6 COMP
21 GND
7 UVIN
20 GND
8 GND
19 GND
9 SS
18 BST
10
17
VIN
NC
1116 LVXIN
1125 LVXIN
1134 LVXIN
Now Available in Lead Free Packaging
DESCRIPTION
The SP7653 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed to be
especially attractive for dual supply, 12V to 20V distributed power systems stepped down with 5V used to power the
controller. This lower VCC voltage minimizes power dissipation in the part and is used to drive the top switch. The SP7653
is designed to provide a fully integrated buck regulator solution using a fixed 1.3MHz frequency, PWM voltage mode
architecture. Protection features include Under Voltage Lock Out (UVLO), thermal shutdown and output short circuit
protection. The SP7653 is available in the space saving DFN package.
TYPICAL APPLICATION CIRCUIT
U1
SP7653
CZ2 RZ2
1.5nF 38.3k1, 1%
CP1
3.3pF
CF1
100pF
CSS
22nF
VIN
12V
C1,C5:
CERAMIC
X5R
GND
C1
22uF
16V
C5
22uF
16V
R3
200k1,1%
R4
100k1,1%
1
2
3
4
5
6
7
8
9
10
11
12
13
C2
0.1uF
PGND
PGND
PGND
GND
VFB
COMP
UVIN
GND
SS
VIN
VIN
VIN
VIN
Fs=1.3MHz
1
2
3
LX
LX
LX
LX
VCC
GND
GND
GND
BST
NC
LX
LX
LX
26
25
24
23
22
21
20
19
18
17
16
15
14
U2
SPX5205
VIN VOUT 5
GND
EN BYP
4
L1 IHLP2525CZER2R2M01
2.2uH, Irate=8A
DCR=18m1
C3: X5R
CERAMIC
CVCC
2.2uF
C3
47uF
6.3V
RZ3
1581,1%
CZ3
820pF
GND2
RBST
5.111,
1%
CBST
1uF
DBST
SD101AWS
VOUT
3.30V
0-3A
R1
68.1k1,1%
R2
21.5k1,1%
Notes:
U1 Bottom-Side Layout should have
three Contacts which are
isolated from one another: QT-
Drain Contact, QB-Drain Contact and
Controller-GND Contact.
ALL RESISTORS & CAPACITORS ARE SIZE
0603 UNLESS OTHERWISE SPECIFIED.
Date: 121//1270//0066
SP76S5P376W5i3deWInidpeuItnVpoultaVgoeltRagaengRea,n1g.3eM, 1H.3zM, BHuzc,kBRueckguRlaetgourlator
1
© Copyright 2006 Sipex Corporation


SP7653 Datasheet
Recommendation SP7653 Datasheet
Part SP7653
Description Wide Input Voltage Range
Feature SP7653; www.DataSheet4U.com Wide Input Voltage Range, 1.3MHz, Buck Regulator FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■.
Manufacture Sipex Corporation
Datasheet
Download SP7653 Datasheet




Sipex Corporation SP7653
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the
specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
VCC .................................................................................................. 7V
VIN ........................................................................................................................................... 20V
ILX ............................................................................................................................................... 5A
BST ............................................................................................... 27V
LX-BST ............................................................................. -0.3V to 7V
LX ....................................................................................... -1V to 20V
All other pins .......................................................... -0.3V to VCC+0.3V
Storage Temperature .................................................. -65°C to 150°C
Power Dissipation ...................................... Internally Limited via OTP
ESD Rating .......................................................................... 2kV HBM
Thermal Resistance VJC .................................................................................... 5°C/W
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: -40°C < TAMB < 85°C, -40°C< Tj< 125°C, 4.5V < VCC < 5.5V, 3V< Vin< 28V, Boost=LX + 5V,
LX = GND = 0.0V, UVIN = 3.0V, CVCC = 1µF, CCOMP = 0.1µF, CSS = 50nF, Typical measured at VCC = 5V.
The z denotes the specifications which apply over the full temperature range, unless otherwise specified.
PARAMETER
QUIESCENT CURRENT
VCC Supply Current (No switching)
VCC Supply Current (switching)
Boost Supply Current (No
switching)
Boost Supply Current (switching)
PROTECTION: UVLO
VCC UVLO Start Threshold
VCC UVLO Hysteresis
UVIN Start Threshold
UVIN Hysteresis
UVIN Input Current
ERROR AMPLIFIER REFERENCE
MIN.
4.00
100
2.3
200
Error Amplifier Reference
0.792
Error Amplifier Reference
Over Line and Temperature
Error Amplifier Transconductance
Error Amplifier Gain
COMP Sink Current
COMP Source Current
VFB Input Bias Current
Internal Pole
COMP Clamp
COMP Clamp Temp. Coefficient
0.788
TYP.
1.5
8
0.2
4.0
4.25
200
2.5
300
0.800
0.800
6
60
150
150
50
4
2.5
-2
MAX.
3
0.4
4.5
300
2.65
400
1
0.808
0.812
200
UNITS
CONDITIONS
mA VFB =0.9V
mA
mA VFB =0.9V
mA
V
mV
V
mV
µA UVIN= 3.0V
V
2X Gain Config., Measure
VFB; VCC =5 V, T=25ºC
V
mA/V
dB
µA
µA
nA
MHz
V
mV/ºC
No Load
VFB =0.9V, COMP= 0.9V
VFB =0.7V, COMP= 2.2V
VFB = 0.8V
VFB =0.7V, TA=25ºC
DDaattee:: 121//1270//0066
SP76S5P37W65id3eWInidpeutInVpoulttaVgoeltRagaengRea, n1g.3eM, 1H.3z,MBHuzc,kBRuecgkuRlaetgour lator
2
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Sipex Corporation SP7653
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: -40°C < TAMB < 85°C, -40°C< Tj< 125°C, 4.5V < VCC < 5.5V, 3V< Vin< 28V, Boost = LX + 5V,
LX = GND = 0.0V, UVIN = 3.0V, CVCC = 1µF, CCOMP = 0.1µF, CSS = 50nF, Typical measured at VCC = 5V.
The z denotes the specifications which apply over the full temperature range, unless otherwise specified.
PARAMETER
MIN. TYP. MAX. UNITS
CONDITIONS
CONTROL LOOP: PWM COMPARATOR, RAMP & LOOP DELAY PATH
Ramp Amplitude
RAMP Offset
RAMP offset Temp. Coefficient
GH Minimum Pulse Width
0.92
Maximum Controllable Duty Ratio
92
Maximum Duty Ratio
100
Internal Oscillator Ratio
1.1
TIMERS: SOFTSTART
SS Charge Current:
SS Discharge Current:
1
PROTECTION: Short Circuit & Thermal
Short Circuit Threshold Voltage
Hiccup Timeout
Number of Allowable Clock Cycles
at 100% Duty Cycle
Minimum GL Pulse After 20 Cycles
Thermal Shutdown Temperature
Thermal Recovery Temperature
Thermal Hysteresis
OUTPUT: POWER STAGE
0.2
High Side Switch RDSON
Synchronous Lowside Switch RDSON
Maximum Output Current
3
1.1
1.1
-2
90
97
1.3
10
0.25
200
20
0.5
145
135
10
40
40
1.28 V
V
TA = 25ºC, RAMP COMP
until GH starts Switching
mV/ºC
180 ns
Maximum Duty Ratio
% Measured just before
pulsing begins
% Valid for 20 cycles
1.5 MHz
µA
mA Fault Present, SS = 0.2V
0.3
V
Measured VREF (0.8V) -
VFB
ms VFB = 0.5V
Cycles
Cycles
ºC
ºC
ºC
VFB = 0.7V
VFB = 0.7V
mΩ
VCC = 5V ; IOUT = 3A
TAMB = 25ºC
mΩ
VCC = 5V ; IOUT = 3A
TAMB = 25ºC
A
Date: 121//1270//0066
SP7S65P376W5i3deWIindpeuItnVpoultaVgoeltaRgaengRea,n1g.e3,M1H.3zM, BHuzc,kBRucekguRlaetgourlator
3
© Copyright 2006 Sipex Corporation







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