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Sipex Corporation

SP6136 Datasheet Preview

SP6136 Datasheet

Synchronous Buck Controller

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SP6136
Synchronous Buck Controller
FEATURES
5V to 24V Input step down converter
Up to 7A output in a small form factor
16 15 14 13
Highly integrated design, minimal components
UVLO Detects Both VCC and VIN
Overcurrent circuit protection with auto-restart
GL
PGND
1
2
SP6136
12 GH
11 SWN
Power Good Output, ENABLE Input
Maximum Controllable Duty Cycle Ratio up to 92% GND
Wide BW amp allows Type II or III compensation
Programmable Soft Start
VFB
3
4
16 Pin QFN
3mm x 3mm
10 ISP
9 ISN
Fast Transient Response
Available in Lead Free, RoHS Compliant
5678
16-Pin QFN package
External Driver Enable/Disable
U.S. Patent #6,922,041
DESCRIPTION
The SP6136 is a synchronous step-down switching regulator controller optimized for high
efficiency. The part is designed to be especially attractive for single supply step down con-
version from 5V to 24V. The SP6136 is designed to drive a pair of external NFETs using
a fixed 600 KHz frequency, PWM voltage mode architecture. Protection features include
UVLO, thermal shutdown, output short circuit protection, and overcurrent protection with
auto restart. The device also features a PWRGD output and an enable input. The SP6136
is available in a space saving 16-pin QFN and offers excellent thermal performance.
TYPICAL APPLICATION CIRCUIT
C3
0.1uF
DBST
CVCC
4.7uF
SD101AWS
VIN
BST
VCC
GH
R5 10kΩ
POWERGOOD
NC
ENABLE
PWRGD
SWN
UVIN
EN SP6136
GND
GL
CF1
22pF
CP1
12 pF
PGND
COMP
VFB
ISP
ISN
SS
CZ3
270pF
CZ2
560pF
RZ2
30.9kΩ
CBST
0.1uF
MT, Si4354DY
18.5 mΩ, 30V
Inter-Technical SC7232-2R2
2.2uH, 13A, 10.4mΩ
MB, Si4886DY
13.5 mΩ, 30V
RS1
5.11KΩ
RS2
5.11KΩ
RS3
10KΩ
CSS
47nF
CSP
6.8nF
CS
0.1uF
RZ3
1kΩ
VIN
CIN
22uF 12V
GND
VOUT
COUT
100uF 3.3V
0-7A
GND
R1
68.1kΩ, 1%
R2
21.5kΩ, 1%
Oct 31-06 Rev L
Note: Die attach paddle is internally connected to GND.
SP6136 Synchronous Buck Controller

© 2006 Sipex Corporation




Sipex Corporation

SP6136 Datasheet Preview

SP6136 Datasheet

Synchronous Buck Controller

No Preview Available !

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 maxi-
mum rating conditions for extended periods of time may affect reliability.
VCC .................................................................................................. 6V
VIN .............................................................................................. 24.5V
BST................................................................................................ 30V
BST-SWN......................................................................................... 7V
SWN.....................................................................................-2V to 24V
GH...........................................................................-0.3V to BST+0.3V
GH-SWN.......................................................................................... 6V
ABSOLUTE MAXIMUM RATINGS
Peak Output Current < 10µs
GH,GL.............................................................................................. 2A
Storage Temperature................................................... -65°C to 150°C
Power Dissipation........................................................................... 1W
ESD Rating........................................................................... 2kV HBM
Thermal Resistance.............................................................. 41.9°C/W
All other pins............................................................-0.3V to VCC+0.3V
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: -40°C < TAMB < 85°C, 4.5V < VCC < 5.5V, BST=VCC, SWN = GND = PGND = 0.0V, UVIN = 3.0V, CVCC
= 10µF, CCOMP = 0.1µF, CGH = CGL = 3.3nF, CSS = 50nF, RPWRGD = 10KΩ.
PARAMETER
MIN TYP
QUIESCENT CURRENT
VIN Supply Current
1.5
VCC Supply Current
1.5
BST Supply Current
0.2
PROTECTION: UVLO
VCC UVLO Start
Threshold
4.00 4.25
VCC UVLO Hysteresis 150 200
UVIN Start Threshold
2.35 2.50
UVIN Hysteresis
200 300
VIN Start Threshold
9.0 9.5
VIN Hysteresis
300
Enable Pullup Current
0.4
ERROR AMPLIFIER REFERENCE
Error Amplifier Reference 0.792 0.800
Error Amplifier Reference
Over Line and Tempera- 0.788 0.800
ture
COMP Sink Current
70 150
COMP Source Current -230 -150
VFB Input Bias Current 1
50
COMP Common Mode
Output Range
1.9 3.0
COMP Pin Clamp
Voltage
3.2 3.5
MAX
3.0
3.0
0.4
4.5
250
2.65
400
10.0
0.808
0.812
230
-70
100
3.2
3.8
UNITS CONDITIONS
mA VFB = 1V (no switching)
mA VFB = 1V (no switching)
mA VFB = 1V (no switching)
V
mV
V Apply voltage to UVIN pin
mV Apply voltage to UVIN pin
V UVIN Floating
mV UVIN Floating
µA Apply voltage to EN pin
V 2X Gain Config.
V
µA
µA
nA
V
V VFB = 0.7V
Oct 31-06 Rev L
SP6136 Synchronous Buck Controller

© 2006 Sipex Corporation


Part Number SP6136
Description Synchronous Buck Controller
Maker Sipex Corporation
Total Page 18 Pages
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