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SLF12565 Datasheet(PDF) 4 Page - Richtek Technology Corporation

Part # SLF12565
Description  5A, 36V, 500kHz Current Mode Asynchronous Step-Down Converter
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

SLF12565 Datasheet(HTML) 4 Page - Richtek Technology Corporation

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RT2805A
4
DS2805A-00
November 2012
www.richtek.com
©
Copyright
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Absolute Maximum Ratings (Note 1)
Supply Voltage, VIN -----------------------------------------------------------------------------------------
−0.3V to 40V
Switching Voltage, SW -------------------------------------------------------------------------------------
−0.3V to (VIN + 0.3V)
BOOT Voltage ------------------------------------------------------------------------------------------------- (VSW
− 0.3V) to (VSW + 6V)
Other Pins ------------------------------------------------------------------------------------------------------
−0.3V to 6V
Power Dissipation, PD @ TA = 25
°C
SOP-8 (Exposed Pad) -------------------------------------------------------------------------------------- 2.04W
Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad),
θJA --------------------------------------------------------------------------------- 49°C/W
SOP-8 (Exposed Pad),
θJC -------------------------------------------------------------------------------- 15°C/W
Junction Temperature ---------------------------------------------------------------------------------------- 150
°C
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------ 260
°C
Storage Temperature Range -------------------------------------------------------------------------------
−65°C to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Model) --------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions
(Note 4)
Supply Voltage, VIN ----------------------------------------------------------------------------------------- 5.5V to 36V
Junction Temperature Range -------------------------------------------------------------------------------
40°C to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------
40°C to 85°C
Electrical Characteristics
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
TA = 25°C
1.202 1.222 1.239
Reference Voltage
VREF
IOUT = 0A to 5A
1.196 1.222 1.245
V
High Side Switch-On Resistance
RDS(ON)1
Bias Gate Driver at VIN = 5.5V
--
110
230
m
Ω
Low Side Switch-On Resistance
RDS(ON)2
Bias Gate Driver at VIN = 5.5V
--
10
15
Ω
Current Limit
ILIM
Voltage Mode Test
6
7.5
9
A
Oscillator Frequency
fOSC
VFB = 0.8V
400
500
600
kHz
Short Circuit Frequency
VFB = 0V
--
150
--
kHz
Maximum Duty Cycle
DMAX
VFB = 0.8V
85
90
95
%
Minimum On-Time
tON
Come from Maximum Duty Cycle
--
100
150
ns
Under Voltage Lockout Threshold
Rising
VIN Rising, Check Switching
--
4.2
5
V
Under Voltage Lockout Threshold
Hysteresis
VIN Falling, Check Switching
--
315
--
mV
Logic-High
VIH
Let EN = 1.4V, Check IQ
1.4
--
--
EN Threshold
Voltage
Logic-Low
VIL
Let EN = 0.4V, Check IQ
--
--
0.4
V
Enable Pull Up Current
--
1
--
μA
Shutdown Current
ISHDN
VEN = 0V
--
25
45
μA
Quiescent Current
IQ
VEN = 2V, VFB = 1.5V
--
0.6
1
mA
Soft-Start Period
3
5
10
ms
Thermal Shutdown
TSD
--
160
--
°C
(VIN = 12V, TA =
−40°C to 85°C unless otherwise specified)


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