XL6008
400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter
Features
n Wide 3.6V to 32V Input Voltage Range n Positive or Negative Output Voltage
Programming with a Single Feedback Pin n Current Mode Control Provides Excellent
Transient Response
n 1.25V reference adjustable version n Fixed 400KHz Switching Frequency n Maximum 3A Switching Current
n SW PIN Built in Over Voltage Protection n Excellent line and load regulation n EN PIN TTL shutdown capability n Internal Optimize Power MOSFET n High efficiency up to 92%
n Built in Frequency Compensation n Built in Soft-Start Function
n Built in Thermal Shutdown Function n Built in Current Limit Function n Available in TO252-5L package
General Description
The XL6008 regulator is a wide input range, current mode, DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. The XL6008 built in N-channel power MOSFET and fixed frequency oscillator, current-mode architecture results in stable operation over a wide range of supply and output voltages.
The XL6008 regulator is special design for portable electronic equipment.
Applications
n Automotive and Industrial Boost /
Buck-Boost / Inverting Converters n Portable Electronic Equipment
Figure1. Package Type of XL6008
Rev 1.2
1
XL6008
400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter
Pin Configurations
Figure2. Pin Configuration of XL6008 (Top View)
Table 1 Pin Description
Pin Number
1
2 3 4 5
Pin Name GND EN SW VIN FB
Description Ground Pin.
Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. Power Switch Output Pin (SW).
Supply Voltage Input Pin. XL6008 operates from a 3.6V to 32V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input.
Feedback Pin (FB). The feedback threshold voltage is 1.25V.
Rev 1.2
2
XL6008
400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter
Function Block
Figure3. Function Block Diagram of XL6008
Typical Application Circuit
Figure4. XL6008 Typical Application Circuit (Boost Converter)
Rev 1.2
3
XL6008
400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter
Ordering Information
Package
Temperature Range
Part Number Lead Free XL6008E1 XL6008TRE1
Marking ID Lead Free XL6008E1 XL6008E1
Packing Type Tube Tape & Reel
XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant.
Absolute Maximum Ratings（Note1）
Parameter
Input Voltage
Feedback Pin Voltage EN Pin Voltage
Output Switch Pin Voltage Power Dissipation Thermal Resistance (TO252-5L) (Junction to Ambient, No Heatsink, Free Air) Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) ESD (HBM)
Symbol Vin VFB VEN VOutput PD RJA TJ TSTG TLEAD
Value -0.3 to 36 -0.3 to Vin -0.3 to Vin -0.3 to 60 Internally limited 50 -40 to 125 -65 to 150 260 >2000
Unit V V V V mW oC/W oC oC oC V
Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Rev 1.2
4
XL6008
400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter
XL6008 Electrical Characteristics
Ta = 25℃;unless otherwise specified. Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
System parameters test circuit figure4 VFB Efficiency
Feedback Voltage
Vin = 12V to 16V, Vout=18V Iload=0.1A to 1A Vin=12V ,Vout=18.5V Iout=1A
1.213 1.25 1.287 -
92
-
V %
?
Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 220uf/50V capacitor; Iout=0.5A, Ta = 25℃; the others floating unless otherwise specified.
Parameters Input operation voltage Shutdown Supply Current Quiescent Supply Current Oscillator Frequency Switch Current Limit Output Power NMOS
Symbol Vin ISTBY Iq Fosc IL Rdson
Test Condition
VEN=0V VEN =2V, VFB =Vin
VFB =0 Vin=12V, ISW=3A High (Regulator ON) Low (Regulator OFF) VEN =2V (ON) VEN =0V (OFF)
VFB=0V
Min. Typ. Max. 3.6 320
70 2.5 400 3 110 1.4 0.8 3 3 90
32 100 5 480 120
Unit V uA mA Khz A mohm
EN Pin Threshold EN Pin Input Leakage Current
Max. Duty Cycle
VEN IH IL DMAX
10 10
V uA uA %
Rev 1.2
5
XL6008
400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter
Schottky Diode Selection Table
Current Surface Mount
1A
3A
√ √ √ √ √ √
1N5820 MBR320 SK32 SR302 1N5821 MBR330 SK33 30WQ03 31DQ03 SR303 1N5822 SK34
SK35
MBR360 SK36 SR306 MBR340 MBR350 30WQ04 30WQ05 31DQ04 31DQ05 SR304 SR305 Through VR (The same as system maximum input voltage) Hole 20V 30V 40V 50V 60V 1N5817 1N5818 1N5819 √
Typical System Application – Boost (Output 18.5V/1A)
Figure5. XL6008 Typical System Application (Boost Converter)
Rev 1.2
6
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